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API Conventions
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espressif.com
2016-01-01
bc127268662167db
null
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API Conventions This document describes conventions and assumptions common to ESP-IDF Application Programming Interfaces (APIs). ESP-IDF provides several kinds of programming interfaces: C functions, structures, enums, type definitions, and preprocessor macros declared in public header files of ESP-IDF components. ...
API Conventions This document describes conventions and assumptions common to ESP-IDF Application Programming Interfaces (APIs). ESP-IDF provides several kinds of programming interfaces: C functions, structures, enums, type definitions, and preprocessor macros declared in public header files of ESP-IDF components. Vari...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/api-conventions.html
ESP-IDF Programming Guide v5.2.1 documentation
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ESP-MQTT
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espressif.com
2016-01-01
6e59fd1e6a0bfa18
null
null
ESP-MQTT Overview ESP-MQTT is an implementation of MQTT protocol client, which is a lightweight publish/subscribe messaging protocol. Now ESP-MQTT supports MQTT v5.0. Features Support MQTT over TCP, SSL with Mbed TLS, MQTT over WebSocket, and MQTT over WebSocket Secure Easy to setup with URI Multiple insta...
ESP-MQTT Overview ESP-MQTT is an implementation of MQTT protocol client, which is a lightweight publish/subscribe messaging protocol. Now ESP-MQTT supports MQTT v5.0. Features - Support MQTT over TCP, SSL with Mbed TLS, MQTT over WebSocket, and MQTT over WebSocket Secure - Easy to setup with URI - Multiple instances (m...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/protocols/mqtt.html
ESP-IDF Programming Guide v5.2.1 documentation
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ESP-TLS
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espressif.com
2016-01-01
745bfc5af690d090
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null
ESP-TLS Overview The ESP-TLS component provides a simplified API interface for accessing the commonly used TLS functions. It supports common scenarios like CA certification validation, SNI, ALPN negotiation, and non-blocking connection among others. All the configurations can be specified in the esp_tls_cfg_t dat...
ESP-TLS Overview The ESP-TLS component provides a simplified API interface for accessing the commonly used TLS functions. It supports common scenarios like CA certification validation, SNI, ALPN negotiation, and non-blocking connection among others. All the configurations can be specified in the esp_tls_cfg_t data stru...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/protocols/esp_tls.html
ESP-IDF Programming Guide v5.2.1 documentation
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ESP HTTP Client
Int Max Authorization Retries
espressif.com
2016-01-01
b25bfd1e6219ee90
null
null
ESP HTTP Client Overview esp_http_client component provides a set of APIs for making HTTP/S requests from ESP-IDF applications. The steps to use these APIs are as follows: esp_http_client_init() : Creates an esp_http_client_handle_t instance, i.e., an HTTP client handle based on the given esp_http_client_confi...
ESP HTTP Client Overview esp_http_client component provides a set of APIs for making HTTP/S requests from ESP-IDF applications. The steps to use these APIs are as follows: - esp_http_client_init(): Creates an esp_http_client_handle_tinstance, i.e., an HTTP client handle based on the given esp_http_client_config_tconfig...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/protocols/esp_http_client.html
ESP-IDF Programming Guide v5.2.1 documentation
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ESP Local Control
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espressif.com
2016-01-01
2289ac90e489fa49
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null
ESP Local Control Overview ESP Local Control (esp_local_ctrl) component in ESP-IDF provides capability to control an ESP device over HTTPS or Bluetooth® Low Energy. It provides access to application defined properties that are available for reading/writing via a set of configurable handlers. Initialization of the ...
ESP Local Control Overview ESP Local Control (esp_local_ctrl) component in ESP-IDF provides capability to control an ESP device over HTTPS or Bluetooth® Low Energy. It provides access to application defined properties that are available for reading/writing via a set of configurable handlers. Initialization of the esp_l...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/protocols/esp_local_ctrl.html
ESP-IDF Programming Guide v5.2.1 documentation
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ESP Serial Slave Link
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espressif.com
2016-01-01
9edb9e9ee3429119
null
null
ESP Serial Slave Link Overview Espressif provides several chips that can work as slaves. These slave devices rely on some common buses, and have their own communication protocols over those buses. The esp_serial_slave_link component is designed for the master to communicate with ESP slave devices through those pr...
ESP Serial Slave Link Overview Espressif provides several chips that can work as slaves. These slave devices rely on some common buses, and have their own communication protocols over those buses. The esp_serial_slave_link component is designed for the master to communicate with ESP slave devices through those protocol...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/protocols/esp_serial_slave_link.html
ESP-IDF Programming Guide v5.2.1 documentation
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ESP x509 Certificate Bundle
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espressif.com
2016-01-01
2d29627b1e191694
null
null
ESP x509 Certificate Bundle Overview The ESP x509 Certificate Bundle API provides an easy way to include a bundle of custom x509 root certificates for TLS server verification. Note The bundle is currently not available when using WolfSSL. The bundle comes with the complete list of root certificates from Mozilla'...
ESP x509 Certificate Bundle Overview The ESP x509 Certificate Bundle API provides an easy way to include a bundle of custom x509 root certificates for TLS server verification. Note The bundle is currently not available when using WolfSSL. The bundle comes with the complete list of root certificates from Mozilla's NSS r...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/protocols/esp_crt_bundle.html
ESP-IDF Programming Guide v5.2.1 documentation
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HTTP Server
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espressif.com
2016-01-01
e753bdcbfc02d09f
null
null
HTTP Server Overview The HTTP Server component provides an ability for running a lightweight web server on ESP32. Following are detailed steps to use the API exposed by HTTP Server: httpd_start() : Creates an instance of HTTP server, allocate memory/resources for it depending upon the specified configuration a...
HTTP Server Overview The HTTP Server component provides an ability for running a lightweight web server on ESP32. Following are detailed steps to use the API exposed by HTTP Server: - httpd_start(): Creates an instance of HTTP server, allocate memory/resources for it depending upon the specified configuration and outpu...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/protocols/esp_http_server.html
ESP-IDF Programming Guide v5.2.1 documentation
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HTTPS Server
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espressif.com
2016-01-01
cc52bd4bb812f89d
null
null
HTTPS Server Overview This component is built on top of HTTP Server. The HTTPS server takes advantage of hook registration functions in the regular HTTP server to provide callback function for SSL session. All documentation for HTTP Server applies also to a server you create this way. Used APIs The following AP...
HTTPS Server Overview This component is built on top of HTTP Server. The HTTPS server takes advantage of hook registration functions in the regular HTTP server to provide callback function for SSL session. All documentation for HTTP Server applies also to a server you create this way. Used APIs The following APIs of HT...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/protocols/esp_https_server.html
ESP-IDF Programming Guide v5.2.1 documentation
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ICMP Echo
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espressif.com
2016-01-01
a4f8bdb0a61cb1f1
null
null
ICMP Echo Overview ICMP (Internet Control Message Protocol) is used for diagnostic or control purposes or generated in response to errors in IP operations. The common network util ping is implemented based on the ICMP packets with the type field value of 0, also called Echo Reply . During a ping session, the sou...
ICMP Echo Overview ICMP (Internet Control Message Protocol) is used for diagnostic or control purposes or generated in response to errors in IP operations. The common network util ping is implemented based on the ICMP packets with the type field value of 0, also called Echo Reply. During a ping session, the source host...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/protocols/icmp_echo.html
ESP-IDF Programming Guide v5.2.1 documentation
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Mbed TLS
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espressif.com
2016-01-01
6e16f81f49428ad4
null
null
Mbed TLS Mbed TLS is a C library that implements cryptographic primitives, X.509 certificate manipulation and the SSL/TLS and DTLS protocols. Its small code footprint makes it suitable for embedded systems. Note ESP-IDF uses a fork of Mbed TLS which includes a few patches (related to hardware routines of certain mo...
Mbed TLS Mbed TLS is a C library that implements cryptographic primitives, X.509 certificate manipulation and the SSL/TLS and DTLS protocols. Its small code footprint makes it suitable for embedded systems. Note ESP-IDF uses a fork of Mbed TLS which includes a few patches (related to hardware routines of certain module...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/protocols/mbedtls.html
ESP-IDF Programming Guide v5.2.1 documentation
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Bluetooth® Generic Defines
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espressif.com
2016-01-01
758f3be2c2aa841
null
null
Bluetooth® Generic Defines API Reference Header File This header file can be included with: #include "esp_bt_defs.h" This header file is a part of the API provided by the bt component. To declare that your component depends on bt , add the following to your CMakeLists.txt: REQUIRES bt or PRIV_REQUIRES bt Struc...
Bluetooth® Generic Defines API Reference Header File This header file can be included with: #include "esp_bt_defs.h" This header file is a part of the API provided by the btcomponent. To declare that your component depends on bt, add the following to your CMakeLists.txt: REQUIRES bt or PRIV_REQUIRES bt Structures - str...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_bt_defs.html
ESP-IDF Programming Guide v5.2.1 documentation
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Bluetooth® Main API
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espressif.com
2016-01-01
9563e01dde360111
null
null
Bluetooth® Main API API Reference Header File This header file can be included with: #include "esp_bt_main.h" This header file is a part of the API provided by the bt component. To declare that your component depends on bt , add the following to your CMakeLists.txt: REQUIRES bt or PRIV_REQUIRES bt Functions ...
Bluetooth® Main API API Reference Header File This header file can be included with: #include "esp_bt_main.h" This header file is a part of the API provided by the btcomponent. To declare that your component depends on bt, add the following to your CMakeLists.txt: REQUIRES bt or PRIV_REQUIRES bt Functions - esp_bluedro...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_bt_main.html
ESP-IDF Programming Guide v5.2.1 documentation
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Bluetooth® Device APIs
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espressif.com
2016-01-01
b6052215eb0fd350
null
null
Bluetooth® Device APIs Overview Bluetooth device reference APIs. API Reference Header File components/bt/host/bluedroid/api/include/api/esp_bt_device.h This header file can be included with: #include "esp_bt_device.h" This header file is a part of the API provided by the bt component. To declare that your co...
Bluetooth® Device APIs Overview Bluetooth device reference APIs. API Reference Header File components/bt/host/bluedroid/api/include/api/esp_bt_device.h This header file can be included with: #include "esp_bt_device.h" This header file is a part of the API provided by the btcomponent. To declare that your component depe...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_bt_device.html
ESP-IDF Programming Guide v5.2.1 documentation
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GAP API
Esp Err T Esp Gap Ble Set Authorization Esp Bd Addr T Bd Addr; Bool Authorize
espressif.com
2016-01-01
ce249c99a32fb941
null
null
GAP API Application Example Check the bluetooth/bluedroid/ble folder in ESP-IDF examples, which contains the following demos and their tutorials: The following shows an SMP security client demo with its tutorial. This demo initiates its security parameters and acts as a GATT client, which can send a security reque...
GAP API Application Example Check the bluetooth/bluedroid/ble folder in ESP-IDF examples, which contains the following demos and their tutorials: The following shows an SMP security client demo with its tutorial. This demo initiates its security parameters and acts as a GATT client, which can send a security request to...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_gap_ble.html
ESP-IDF Programming Guide v5.2.1 documentation
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GATT Defines
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espressif.com
2016-01-01
758f3be2c2aa841
null
null
GATT Defines API Reference Header File components/bt/host/bluedroid/api/include/api/esp_gatt_defs.h This header file can be included with: #include "esp_gatt_defs.h" This header file is a part of the API provided by the bt component. To declare that your component depends on bt , add the following to your CMake...
GATT Defines API Reference Header File components/bt/host/bluedroid/api/include/api/esp_gatt_defs.h This header file can be included with: #include "esp_gatt_defs.h" This header file is a part of the API provided by the btcomponent. To declare that your component depends on bt, add the following to your CMakeLists.txt:...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_gatt_defs.html
ESP-IDF Programming Guide v5.2.1 documentation
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GATT Server API
null
espressif.com
2016-01-01
def83c57aa07b905
null
null
GATT Server API Application Examples Check bluetooth/bluedroid/ble folder in ESP-IDF examples, which contains the following demos and their tutorials: This is a GATT server demo and its tutorial. This demo creates a GATT service with an attribute table, which releases the user from the operation of adding attribut...
GATT Server API Application Examples Check bluetooth/bluedroid/ble folder in ESP-IDF examples, which contains the following demos and their tutorials: This is a GATT server demo and its tutorial. This demo creates a GATT service with an attribute table, which releases the user from the operation of adding attributes on...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_gatts.html
ESP-IDF Programming Guide v5.2.1 documentation
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GATT Client API
null
espressif.com
2016-01-01
c638ec563a0f9b41
null
null
GATT Client API Application Example Check bluetooth/bluedroid/ble folder in ESP-IDF examples, which contains the following demos and their tutorials: This is a GATT client demo and its tutorial. This demo can scan for devices, connect to the GATT server and discover its services. This is a multiple connection dem...
GATT Client API Application Example Check bluetooth/bluedroid/ble folder in ESP-IDF examples, which contains the following demos and their tutorials: This is a GATT client demo and its tutorial. This demo can scan for devices, connect to the GATT server and discover its services. This is a multiple connection demo and ...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_gattc.html
ESP-IDF Programming Guide v5.2.1 documentation
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BluFi API
null
espressif.com
2016-01-01
4eb8a65da20ba941
null
null
BluFi API Overview BluFi is a profile based GATT to config ESP32 Wi-Fi to connect/disconnect AP or setup a softap and etc. Use should concern these things: The event sent from profile. Then you need to do something as the event indicate. Security reference. You can write your own Security functions such as symmet...
BluFi API Overview BluFi is a profile based GATT to config ESP32 Wi-Fi to connect/disconnect AP or setup a softap and etc. Use should concern these things: The event sent from profile. Then you need to do something as the event indicate. Security reference. You can write your own Security functions such as symmetrical ...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_blufi.html
ESP-IDF Programming Guide v5.2.1 documentation
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Classic Bluetooth® GAP API
null
espressif.com
2016-01-01
2668e01dea239b40
null
null
Classic Bluetooth® GAP API API Reference Header File components/bt/host/bluedroid/api/include/api/esp_gap_bt_api.h This header file can be included with: #include "esp_gap_bt_api.h" This header file is a part of the API provided by the bt component. To declare that your component depends on bt , add the followi...
Classic Bluetooth® GAP API API Reference Header File components/bt/host/bluedroid/api/include/api/esp_gap_bt_api.h This header file can be included with: #include "esp_gap_bt_api.h" This header file is a part of the API provided by the btcomponent. To declare that your component depends on bt, add the following to your...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_gap_bt.html
ESP-IDF Programming Guide v5.2.1 documentation
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Bluetooth® A2DP API
null
espressif.com
2016-01-01
2450341eee239b51
null
null
Bluetooth® A2DP API Application Example Check bluetooth/bluedroid/classic_bt folder in ESP-IDF examples, which contains the following application: This is a A2DP sink client demo. This demo can be discovered and connected by A2DP source device and receive the audio stream from remote device - bluetooth/bluedroid/c...
Bluetooth® A2DP API Application Example Check bluetooth/bluedroid/classic_bt folder in ESP-IDF examples, which contains the following application: This is a A2DP sink client demo. This demo can be discovered and connected by A2DP source device and receive the audio stream from remote device - bluetooth/bluedroid/classi...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_a2dp.html
ESP-IDF Programming Guide v5.2.1 documentation
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Bluetooth® AVRCP APIs
null
espressif.com
2016-01-01
758f7be2c2bb801
null
null
Bluetooth® AVRCP APIs Overview Bluetooth AVRCP reference APIs. API Reference Header File This header file can be included with: #include "esp_avrc_api.h" This header file is a part of the API provided by the bt component. To declare that your component depends on bt , add the following to your CMakeLists.txt...
Bluetooth® AVRCP APIs Overview Bluetooth AVRCP reference APIs. API Reference Header File This header file can be included with: #include "esp_avrc_api.h" This header file is a part of the API provided by the btcomponent. To declare that your component depends on bt, add the following to your CMakeLists.txt: REQUIRES bt...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_avrc.html
ESP-IDF Programming Guide v5.2.1 documentation
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SPP API
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espressif.com
2016-01-01
d678aed2aa239b0b
null
null
SPP API Application Example Check bluetooth/bluedroid/classic_bt folder in ESP-IDF examples, which contains the following application: This is a SPP demo. This demo can discover the service, connect, send and recive SPP data bluetooth/bluedroid/classic_bt/bt_spp_acceptor, bluetooth/bluedroid/classic_bt/bt_spp_init...
SPP API Application Example Check bluetooth/bluedroid/classic_bt folder in ESP-IDF examples, which contains the following application: This is a SPP demo. This demo can discover the service, connect, send and recive SPP data bluetooth/bluedroid/classic_bt/bt_spp_acceptor, bluetooth/bluedroid/classic_bt/bt_spp_initiator...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_spp.html
ESP-IDF Programming Guide v5.2.1 documentation
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HFP Defines
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espressif.com
2016-01-01
758f3be2c2aa841
null
null
HFP Defines API Reference Header File This header file can be included with: #include "esp_hf_defs.h" This header file is a part of the API provided by the bt component. To declare that your component depends on bt , add the following to your CMakeLists.txt: REQUIRES bt or PRIV_REQUIRES bt Enumerations enum...
HFP Defines API Reference Header File This header file can be included with: #include "esp_hf_defs.h" This header file is a part of the API provided by the btcomponent. To declare that your component depends on bt, add the following to your CMakeLists.txt: REQUIRES bt or PRIV_REQUIRES bt Enumerations - enum esp_hf_in_b...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_hf_defs.html
ESP-IDF Programming Guide v5.2.1 documentation
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HFP Client API
null
espressif.com
2016-01-01
2451445c6a229a51
null
null
HFP Client API API Reference Header File components/bt/host/bluedroid/api/include/api/esp_hf_client_api.h This header file can be included with: #include "esp_hf_client_api.h" This header file is a part of the API provided by the bt component. To declare that your component depends on bt , add the following to ...
HFP Client API API Reference Header File components/bt/host/bluedroid/api/include/api/esp_hf_client_api.h This header file can be included with: #include "esp_hf_client_api.h" This header file is a part of the API provided by the btcomponent. To declare that your component depends on bt, add the following to your CMake...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_hf_client.html
ESP-IDF Programming Guide v5.2.1 documentation
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HFP AG API
null
espressif.com
2016-01-01
24a1c05d68239b61
null
null
HFP AG API API Reference Header File components/bt/host/bluedroid/api/include/api/esp_hf_ag_api.h This header file can be included with: #include "esp_hf_ag_api.h" This header file is a part of the API provided by the bt component. To declare that your component depends on bt , add the following to your CMakeLi...
HFP AG API API Reference Header File components/bt/host/bluedroid/api/include/api/esp_hf_ag_api.h This header file can be included with: #include "esp_hf_ag_api.h" This header file is a part of the API provided by the btcomponent. To declare that your component depends on bt, add the following to your CMakeLists.txt: R...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_hf_ag.html
ESP-IDF Programming Guide v5.2.1 documentation
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Bluetooth® HID Device API
null
espressif.com
2016-01-01
e2caa5a2e23b941
null
null
Bluetooth® HID Device API Overview A Bluetooth HID device is a device providing the service of human or other data input and output to and from a Bluetooth HID Host. Users can use the Bluetooth HID Device APIs to make devices like keyboards, mice, joysticks and so on. Application Example Check bluetooth/bluedroi...
Bluetooth® HID Device API Overview A Bluetooth HID device is a device providing the service of human or other data input and output to and from a Bluetooth HID Host. Users can use the Bluetooth HID Device APIs to make devices like keyboards, mice, joysticks and so on. Application Example Check bluetooth/bluedroid/class...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_hidd.html
ESP-IDF Programming Guide v5.2.1 documentation
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Classic Bluetooth® L2CAP API
null
espressif.com
2016-01-01
c63cac5aae238906
null
null
Classic Bluetooth® L2CAP API Application Example Check bluetooth/bluedroid/classic_bt folder in ESP-IDF examples, which contains the following application: This is a BT_L2CAP demo. This demo can connect, send and receive L2CAP data bluetooth/bluedroid/classic_bt/bt_l2cap_client, bluetooth/bluedroid/classic_bt/bt_l...
Classic Bluetooth® L2CAP API Application Example Check bluetooth/bluedroid/classic_bt folder in ESP-IDF examples, which contains the following application: This is a BT_L2CAP demo. This demo can connect, send and receive L2CAP data bluetooth/bluedroid/classic_bt/bt_l2cap_client, bluetooth/bluedroid/classic_bt/bt_l2cap_...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_l2cap_bt.html
ESP-IDF Programming Guide v5.2.1 documentation
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Bluetooth® SDP APIs
null
espressif.com
2016-01-01
c678f657ae4b9947
null
null
Bluetooth® SDP APIs Overview Bluetooth SDP reference APIs. API Reference Header File This header file can be included with: #include "esp_sdp_api.h" This header file is a part of the API provided by the bt component. To declare that your component depends on bt , add the following to your CMakeLists.txt: REQ...
Bluetooth® SDP APIs Overview Bluetooth SDP reference APIs. API Reference Header File This header file can be included with: #include "esp_sdp_api.h" This header file is a part of the API provided by the btcomponent. To declare that your component depends on bt, add the following to your CMakeLists.txt: REQUIRES bt or P...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp_sdp.html
ESP-IDF Programming Guide v5.2.1 documentation
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Controller && VHCI
null
espressif.com
2016-01-01
965afe94aa2a9049
null
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Controller && VHCI Application Example Check bluetooth/hci folder in ESP-IDF examples, which contains the following application: This is a Bluetooth® Low Energy (Bluetooth LE) advertising demo with virtual HCI interface. Send Reset/ADV_PARAM/ADV_DATA/ADV_ENABLE HCI command for Bluetooth Low Energy advertising - bl...
Controller && VHCI Application Example Check bluetooth/hci folder in ESP-IDF examples, which contains the following application: This is a Bluetooth® Low Energy (Bluetooth LE) advertising demo with virtual HCI interface. Send Reset/ADV_PARAM/ADV_DATA/ADV_ENABLE HCI command for Bluetooth Low Energy advertising - bluetoo...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/controller_vhci.html
ESP-IDF Programming Guide v5.2.1 documentation
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ESP-BLE-MESH
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espressif.com
2018-04-03
23509b5ea42b8818
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ESP-BLE-MESH Note The current ESP-BLE-MESH v1.1 related code is a preview version, so the Mesh Protocol v1.1 related Structures, MACROs, and APIs involved in the code may be changed. With various features of ESP-BLE-MESH, users can create a managed flooding mesh network for several scenarios, such as lighting, sens...
ESP-BLE-MESH Note The current ESP-BLE-MESH v1.1 related code is a preview version, so the Mesh Protocol v1.1 related Structures, MACROs, and APIs involved in the code may be changed. With various features of ESP-BLE-MESH, users can create a managed flooding mesh network for several scenarios, such as lighting, sensor a...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/esp-ble-mesh.html
ESP-IDF Programming Guide v5.2.1 documentation
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NimBLE-based Host APIs
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espressif.com
2016-01-01
3a0cd604aef8f560
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NimBLE-based Host APIs Overview Apache MyNewt NimBLE is a highly configurable and Bluetooth® SIG qualifiable Bluetooth Low Energy (Bluetooth LE) stack providing both host and controller functionalities. ESP-IDF supports NimBLE host stack which is specifically ported for ESP32 platform and FreeRTOS. The underlying c...
NimBLE-based Host APIs Overview Apache MyNewt NimBLE is a highly configurable and Bluetooth® SIG qualifiable Bluetooth Low Energy (Bluetooth LE) stack providing both host and controller functionalities. ESP-IDF supports NimBLE host stack which is specifically ported for ESP32 platform and FreeRTOS. The underlying contr...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/bluetooth/nimble/index.html
ESP-IDF Programming Guide v5.2.1 documentation
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Error Codes Reference
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espressif.com
2016-01-01
3c4eca5986848dcc
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Error Codes Reference This section lists various error code constants defined in ESP-IDF. For general information about error codes in ESP-IDF, see Error Handling. ESP_FAIL (-1): Generic esp_err_t code indicating failure ESP_OK (0): esp_err_t value indicating success (no error) ESP_ERR_NO_MEM (0x101): Out of mem...
Error Codes Reference This section lists various error code constants defined in ESP-IDF. For general information about error codes in ESP-IDF, see Error Handling. ESP_FAIL (-1): Generic esp_err_t code indicating failure ESP_OK (0): esp_err_t value indicating success (no error) ESP_ERR_NO_MEM (0x101): Out of memory ESP...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/error-codes.html
ESP-IDF Programming Guide v5.2.1 documentation
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ESP-NOW
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espressif.com
2016-01-01
82a5fac4c32e935b
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ESP-NOW Overview ESP-NOW is a kind of connectionless Wi-Fi communication protocol that is defined by Espressif. In ESP-NOW, application data is encapsulated in a vendor-specific action frame and then transmitted from one Wi-Fi device to another without connection. CTR with CBC-MAC Protocol (CCMP) is used to protec...
ESP-NOW Overview ESP-NOW is a kind of connectionless Wi-Fi communication protocol that is defined by Espressif. In ESP-NOW, application data is encapsulated in a vendor-specific action frame and then transmitted from one Wi-Fi device to another without connection. CTR with CBC-MAC Protocol (CCMP) is used to protect the...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/network/esp_now.html
ESP-IDF Programming Guide v5.2.1 documentation
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ESP-WIFI-MESH Programming Guide
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espressif.com
2016-01-01
b641f911f429bbc3
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ESP-WIFI-MESH Programming Guide This is a programming guide for ESP-WIFI-MESH, including the API reference and coding examples. This guide is split into the following parts: For documentation regarding the ESP-WIFI-MESH protocol, please see the ESP-WIFI-MESH API Guide. For more information about ESP-WIFI-MESH Develo...
ESP-WIFI-MESH Programming Guide This is a programming guide for ESP-WIFI-MESH, including the API reference and coding examples. This guide is split into the following parts: For documentation regarding the ESP-WIFI-MESH protocol, please see the ESP-WIFI-MESH API Guide. For more information about ESP-WIFI-MESH Developme...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/network/esp-wifi-mesh.html
ESP-IDF Programming Guide v5.2.1 documentation
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SmartConfig
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espressif.com
2016-01-01
168055ceee2c6296
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SmartConfig The SmartConfigTM is a provisioning technology developed by TI to connect a new Wi-Fi device to a Wi-Fi network. It uses a mobile application to broadcast the network credentials from a smartphone, or a tablet, to an un-provisioned Wi-Fi device. The advantage of this technology is that the device does no...
SmartConfig The SmartConfigTM is a provisioning technology developed by TI to connect a new Wi-Fi device to a Wi-Fi network. It uses a mobile application to broadcast the network credentials from a smartphone, or a tablet, to an un-provisioned Wi-Fi device. The advantage of this technology is that the device does not n...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/network/esp_smartconfig.html
ESP-IDF Programming Guide v5.2.1 documentation
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Wi-Fi Easy ConnectTM (DPP)
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espressif.com
2016-01-01
a78e8b4fab29eb48
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Wi-Fi Easy ConnectTM (DPP) Wi-Fi Easy ConnectTM, also known as Device Provisioning Protocol (DPP) or Easy Connect, is a provisioning protocol certified by Wi-Fi Alliance. It is a secure and standardized provisioning protocol for configuration of Wi-Fi Devices. With Easy Connect, adding a new device to a network is as...
Wi-Fi Easy ConnectTM (DPP) Wi-Fi Easy ConnectTM, also known as Device Provisioning Protocol (DPP) or Easy Connect, is a provisioning protocol certified by Wi-Fi Alliance. It is a secure and standardized provisioning protocol for configuration of Wi-Fi Devices. With Easy Connect, adding a new device to a network is as s...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/network/esp_dpp.html
ESP-IDF Programming Guide v5.2.1 documentation
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Wi-Fi AwareTM (NAN)
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espressif.com
2016-01-01
86a4f9cde544c3e7
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Wi-Fi AwareTM (NAN) Wi-Fi AwareTM or NAN (Neighbor Awareness Networking) is a protocol that allows Wi-Fi devices to discover services in their proximity. Typically, location-based services are based on querying servers for information about the environment and the location knowledge is based on GPS or other location ...
Wi-Fi AwareTM (NAN) Wi-Fi AwareTM or NAN (Neighbor Awareness Networking) is a protocol that allows Wi-Fi devices to discover services in their proximity. Typically, location-based services are based on querying servers for information about the environment and the location knowledge is based on GPS or other location re...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/network/esp_nan.html
ESP-IDF Programming Guide v5.2.1 documentation
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Ethernet
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espressif.com
2016-01-01
ee7cda19a526db94
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Ethernet Overview ESP-IDF provides a set of consistent and flexible APIs to support both internal Ethernet MAC (EMAC) controller and external SPI-Ethernet modules. This programming guide is split into the following sections: Basic Ethernet Concepts Ethernet is an asynchronous Carrier Sense Multiple Access with ...
Ethernet Overview ESP-IDF provides a set of consistent and flexible APIs to support both internal Ethernet MAC (EMAC) controller and external SPI-Ethernet modules. This programming guide is split into the following sections: Basic Ethernet Concepts Ethernet is an asynchronous Carrier Sense Multiple Access with Collisio...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/network/esp_eth.html
ESP-IDF Programming Guide v5.2.1 documentation
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Thread
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espressif.com
2016-01-01
9756f2f82c1391c1
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Thread Introduction Thread is an IP-based mesh networking protocol. It is based on the 802.15.4 physical and MAC layer. Application Examples The openthread directory of ESP-IDF examples contains the following applications: The OpenThread interactive shell openthread/ot_cli The Thread Border Router openthread/ot...
Thread Introduction Thread is an IP-based mesh networking protocol. It is based on the 802.15.4 physical and MAC layer. Application Examples The openthread directory of ESP-IDF examples contains the following applications: The OpenThread interactive shell openthread/ot_cli The Thread Border Router openthread/ot_br The ...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/network/esp_openthread.html
ESP-IDF Programming Guide v5.2.1 documentation
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ESP-NETIF
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espressif.com
2016-01-01
b204fc5bf01399c2
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ESP-NETIF The purpose of the ESP-NETIF library is twofold: It provides an abstraction layer for the application on top of the TCP/IP stack. This allows applications to choose between IP stacks in the future. The APIs it provides are thread-safe, even if the underlying TCP/IP stack APIs are not. ESP-IDF currently imp...
ESP-NETIF The purpose of the ESP-NETIF library is twofold: It provides an abstraction layer for the application on top of the TCP/IP stack. This allows applications to choose between IP stacks in the future. The APIs it provides are thread-safe, even if the underlying TCP/IP stack APIs are not. ESP-IDF currently implem...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/network/esp_netif.html
ESP-IDF Programming Guide v5.2.1 documentation
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ESP-NETIF Custom I/O Driver
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espressif.com
2016-01-01
bf9bda1bd012ba84
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ESP-NETIF Custom I/O Driver This section outlines implementing a new I/O driver with ESP-NETIF connection capabilities. By convention, the I/O driver has to register itself as an ESP-NETIF driver, and thus holds a dependency on ESP-NETIF component and is responsible for providing data path functions, post-attach cal...
ESP-NETIF Custom I/O Driver This section outlines implementing a new I/O driver with ESP-NETIF connection capabilities. By convention, the I/O driver has to register itself as an ESP-NETIF driver, and thus holds a dependency on ESP-NETIF component and is responsible for providing data path functions, post-attach callba...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/network/esp_netif_driver.html
ESP-IDF Programming Guide v5.2.1 documentation
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Analog to Digital Converter (ADC) Oneshot Mode Driver
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espressif.com
2016-01-01
875a9bb63e1ed141
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Analog to Digital Converter (ADC) Oneshot Mode Driver Introduction The Analog to Digital Converter is integrated on the chip and is capable of measuring analog signals from specific analog IO pins. ESP32 has two ADC unit(s), which can be used in scenario(s) like: Generate one-shot ADC conversion result Generate c...
Analog to Digital Converter (ADC) Oneshot Mode Driver Introduction The Analog to Digital Converter is integrated on the chip and is capable of measuring analog signals from specific analog IO pins. ESP32 has two ADC unit(s), which can be used in scenario(s) like: Generate one-shot ADC conversion result Generate continu...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/adc_oneshot.html
ESP-IDF Programming Guide v5.2.1 documentation
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Analog to Digital Converter (ADC) Continuous Mode Driver
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espressif.com
2016-01-01
9ed19a11b2369101
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Analog to Digital Converter (ADC) Continuous Mode Driver Introduction The Analog to Digital Converter is integrated on the chip and is capable of measuring analog signals from specific analog IO pads. Additionally, the Direct Memory Access (DMA) functionality is utilized to efficiently retrieve ADC conversion resul...
Analog to Digital Converter (ADC) Continuous Mode Driver Introduction The Analog to Digital Converter is integrated on the chip and is capable of measuring analog signals from specific analog IO pads. Additionally, the Direct Memory Access (DMA) functionality is utilized to efficiently retrieve ADC conversion results. ...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/adc_continuous.html
ESP-IDF Programming Guide v5.2.1 documentation
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Analog to Digital Converter (ADC) Calibration Driver
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espressif.com
2016-01-01
deb38c77a61b01d3
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Analog to Digital Converter (ADC) Calibration Driver Introduction In ESP32, the digital-to-analog converter (ADC) compares the input analog voltage to the reference, and determines each bit of the output digital result. By design, the ADC reference voltage for ESP32 is 1100 mV. However, the true reference voltage c...
Analog to Digital Converter (ADC) Calibration Driver Introduction In ESP32, the digital-to-analog converter (ADC) compares the input analog voltage to the reference, and determines each bit of the output digital result. By design, the ADC reference voltage for ESP32 is 1100 mV. However, the true reference voltage can r...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/adc_calibration.html
ESP-IDF Programming Guide v5.2.1 documentation
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Clock Tree
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espressif.com
2016-01-01
8770ba38260aa866
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Clock Tree The clock subsystem of ESP32 is used to source and distribute system/module clocks from a range of root clocks. The clock tree driver maintains the basic functionality of the system clock and the intricate relationship among module clocks. This document starts with the introduction to root and module cloc...
Clock Tree The clock subsystem of ESP32 is used to source and distribute system/module clocks from a range of root clocks. The clock tree driver maintains the basic functionality of the system clock and the intricate relationship among module clocks. This document starts with the introduction to root and module clocks....
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/clk_tree.html
ESP-IDF Programming Guide v5.2.1 documentation
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Digital To Analog Converter (DAC)
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espressif.com
2016-01-01
9cda9c1e2654d793
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Digital To Analog Converter (DAC) Overview ESP32 has two 8-bit DAC (digital to analog converter) channels respectively connected to GPIO25 (Channel 1) and GPIO26 (Channel 2). Each DAC channel can convert the digital value 0~255 to the analog voltage 0~Vref (The reference voltage 'Vref' here is input from the pin VD...
Digital To Analog Converter (DAC) Overview ESP32 has two 8-bit DAC (digital to analog converter) channels respectively connected to GPIO25 (Channel 1) and GPIO26 (Channel 2). Each DAC channel can convert the digital value 0~255 to the analog voltage 0~Vref (The reference voltage 'Vref' here is input from the pin VDD3P3...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/dac.html
ESP-IDF Programming Guide v5.2.1 documentation
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GPIO & RTC GPIO
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espressif.com
2016-01-01
9247da07153cb842
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GPIO & RTC GPIO GPIO Summary The ESP32 chip features 34 physical GPIO pins (GPIO0 ~ GPIO19, GPIO21 ~ GPIO23, GPIO25 ~ GPIO27, and GPIO32 ~ GPIO39). Each pin can be used as a general-purpose I/O, or be connected to an internal peripheral signal. Through IO MUX, RTC IO MUX and the GPIO matrix, peripheral input signal...
GPIO & RTC GPIO GPIO Summary The ESP32 chip features 34 physical GPIO pins (GPIO0 ~ GPIO19, GPIO21 ~ GPIO23, GPIO25 ~ GPIO27, and GPIO32 ~ GPIO39). Each pin can be used as a general-purpose I/O, or be connected to an internal peripheral signal. Through IO MUX, RTC IO MUX and the GPIO matrix, peripheral input signals ca...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/gpio.html
ESP-IDF Programming Guide v5.2.1 documentation
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General Purpose Timer (GPTimer)
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espressif.com
2016-01-01
6e55bc12b407b389
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General Purpose Timer (GPTimer) Introduction GPTimer (General Purpose Timer) is the driver of ESP32 Timer Group peripheral. The hardware timer features high resolution and flexible alarm action. The behavior when the internal counter of a timer reaches a specific target value is called a timer alarm. When a timer a...
General Purpose Timer (GPTimer) Introduction GPTimer (General Purpose Timer) is the driver of ESP32 Timer Group peripheral. The hardware timer features high resolution and flexible alarm action. The behavior when the internal counter of a timer reaches a specific target value is called a timer alarm. When a timer alarm...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/gptimer.html
ESP-IDF Programming Guide v5.2.1 documentation
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Inter-Integrated Circuit (I2C)
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espressif.com
2016-01-01
2ed9b813e24eb321
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Inter-Integrated Circuit (I2C) Introduction I2C is a serial, synchronous, multi-device, half-duplex communication protocol that allows co-existence of multiple masters and slaves on the same bus. I2C uses two bidirectional open-drain lines: serial data line (SDA) and serial clock line (SCL), pulled up by resistors....
Inter-Integrated Circuit (I2C) Introduction I2C is a serial, synchronous, multi-device, half-duplex communication protocol that allows co-existence of multiple masters and slaves on the same bus. I2C uses two bidirectional open-drain lines: serial data line (SDA) and serial clock line (SCL), pulled up by resistors. ESP...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/i2c.html
ESP-IDF Programming Guide v5.2.1 documentation
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Inter-IC Sound (I2S)
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espressif.com
2016-01-01
945a9c3e3a5edbc9
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Inter-IC Sound (I2S) Introduction I2S (Inter-IC Sound) is a synchronous serial communication protocol usually used for transmitting audio data between two digital audio devices. ESP32 contains two I2S peripheral(s). These peripherals can be configured to input and output sample data via the I2S driver. An I2S bus...
Inter-IC Sound (I2S) Introduction I2S (Inter-IC Sound) is a synchronous serial communication protocol usually used for transmitting audio data between two digital audio devices. ESP32 contains two I2S peripheral(s). These peripherals can be configured to input and output sample data via the I2S driver. An I2S bus that ...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/i2s.html
ESP-IDF Programming Guide v5.2.1 documentation
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LCD
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espressif.com
2016-01-01
8e895c98ae1fd0d9
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LCD Introduction ESP chips can generate various kinds of timings that needed by common LCDs on the market, like SPI LCD, I80 LCD (a.k.a Intel 8080 parallel LCD), RGB/SRGB LCD, I2C LCD, etc. The esp_lcd component is officially to support those LCDs with a group of universal APIs across chips. Functional Overview ...
LCD Introduction ESP chips can generate various kinds of timings that needed by common LCDs on the market, like SPI LCD, I80 LCD (a.k.a Intel 8080 parallel LCD), RGB/SRGB LCD, I2C LCD, etc. The esp_lcd component is officially to support those LCDs with a group of universal APIs across chips. Functional Overview In esp_...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/lcd.html
ESP-IDF Programming Guide v5.2.1 documentation
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LED Control (LEDC)
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espressif.com
2016-01-01
940698e61a0ccf8d
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LED Control (LEDC) Introduction The LED control (LEDC) peripheral is primarily designed to control the intensity of LEDs, although it can also be used to generate PWM signals for other purposes. It has 8 channels which can generate independent waveforms that can be used, for example, to drive RGB LED devices. LEDC...
LED Control (LEDC) Introduction The LED control (LEDC) peripheral is primarily designed to control the intensity of LEDs, although it can also be used to generate PWM signals for other purposes. It has 8 channels which can generate independent waveforms that can be used, for example, to drive RGB LED devices. LEDC chan...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/ledc.html
ESP-IDF Programming Guide v5.2.1 documentation
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Motor Control Pulse Width Modulator (MCPWM)
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espressif.com
2016-01-01
2f2c1d93b23c9da1
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Motor Control Pulse Width Modulator (MCPWM) The MCPWM peripheral is a versatile PWM generator, which contains various submodules to make it a key element in power electronic applications like motor control, digital power, and so on. Typically, the MCPWM peripheral can be used in the following scenarios: Digital moto...
Motor Control Pulse Width Modulator (MCPWM) The MCPWM peripheral is a versatile PWM generator, which contains various submodules to make it a key element in power electronic applications like motor control, digital power, and so on. Typically, the MCPWM peripheral can be used in the following scenarios: Digital motor c...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/mcpwm.html
ESP-IDF Programming Guide v5.2.1 documentation
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Pulse Counter (PCNT)
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espressif.com
2016-01-01
2c4e3c91246e9be9
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Pulse Counter (PCNT) Introduction The PCNT (Pulse Counter) module is designed to count the number of rising and/or falling edges of input signals. The ESP32 contains multiple pulse counter units in the module. 1 Each unit is in effect an independent counter with multiple channels, where each channel can increment/d...
Pulse Counter (PCNT) Introduction The PCNT (Pulse Counter) module is designed to count the number of rising and/or falling edges of input signals. The ESP32 contains multiple pulse counter units in the module. 1 Each unit is in effect an independent counter with multiple channels, where each channel can increment/decre...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/pcnt.html
ESP-IDF Programming Guide v5.2.1 documentation
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Remote Control Transceiver (RMT)
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espressif.com
2016-01-01
244ebc93381e10e1
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Remote Control Transceiver (RMT) Introduction The RMT (Remote Control Transceiver) peripheral was designed to act as an infrared transceiver. However, due to the flexibility of its data format, RMT can be extended to a versatile and general-purpose transceiver, transmitting or receiving many other types of signals....
Remote Control Transceiver (RMT) Introduction The RMT (Remote Control Transceiver) peripheral was designed to act as an infrared transceiver. However, due to the flexibility of its data format, RMT can be extended to a versatile and general-purpose transceiver, transmitting or receiving many other types of signals. Fro...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/rmt.html
ESP-IDF Programming Guide v5.2.1 documentation
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SD SPI Host Driver
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espressif.com
2016-01-01
8e49cc11e213b299
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SD SPI Host Driver Overview The SD SPI host driver allows communication with one or more SD cards using the SPI Master driver, which utilizes the SPI host. Each card is accessed through an SD SPI device, represented by an SD SPI handle sdspi_dev_handle_t , which returns when the device is attached to an SPI bus by...
SD SPI Host Driver Overview The SD SPI host driver allows communication with one or more SD cards using the SPI Master driver, which utilizes the SPI host. Each card is accessed through an SD SPI device, represented by an SD SPI handle sdspi_dev_handle_t, which returns when the device is attached to an SPI bus by calli...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/sdspi_host.html
ESP-IDF Programming Guide v5.2.1 documentation
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SDIO Card Slave Driver
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espressif.com
2016-01-01
8edafa5fe432bd9b
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SDIO Card Slave Driver Overview The ESP32 SDIO Card host and slave peripherals share two sets of pins, as shown in the table below. The first set is usually occupied by the SPI0 bus, which is responsible for the SPI flash holding the code to run. This means the SDIO slave driver can only run on the second set of pi...
SDIO Card Slave Driver Overview The ESP32 SDIO Card host and slave peripherals share two sets of pins, as shown in the table below. The first set is usually occupied by the SPI0 bus, which is responsible for the SPI flash holding the code to run. This means the SDIO slave driver can only run on the second set of pins w...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/sdio_slave.html
ESP-IDF Programming Guide v5.2.1 documentation
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Sigma-Delta Modulation (SDM)
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espressif.com
2016-01-01
140e9c941ade06e9
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Sigma-Delta Modulation (SDM) Introduction ESP32 has a second-order sigma-delta modulator, which can generate independent PDM pulses to multiple channels. Please refer to the TRM to check how many hardware channels are available. 1 Delta-sigma modulation converts an analog voltage signal into a pulse frequency, or ...
Sigma-Delta Modulation (SDM) Introduction ESP32 has a second-order sigma-delta modulator, which can generate independent PDM pulses to multiple channels. Please refer to the TRM to check how many hardware channels are available. 1 Delta-sigma modulation converts an analog voltage signal into a pulse frequency, or pulse...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/sdm.html
ESP-IDF Programming Guide v5.2.1 documentation
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SPI Flash API
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espressif.com
2016-01-01
96c6d95f86138949
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SPI Flash API Overview The spi_flash component contains API functions related to reading, writing, erasing, and memory mapping for data in the external flash. For higher-level API functions which work with partitions defined in the partition table, see Partitions API Note esp_partition_* APIs are recommended to...
SPI Flash API Overview The spi_flash component contains API functions related to reading, writing, erasing, and memory mapping for data in the external flash. For higher-level API functions which work with partitions defined in the partition table, see Partitions API Note esp_partition_* APIs are recommended to be used...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/spi_flash/index.html
ESP-IDF Programming Guide v5.2.1 documentation
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SPI Master Driver
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espressif.com
2016-01-01
be4afbdea372b389
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SPI Master Driver SPI Master driver is a program that controls ESP32's General Purpose SPI (GP-SPI) peripheral(s) when it functions as a master. Note SPI1 is not a GP-SPI. SPI Master driver also supports SPI1 but with quite a few limitations, see Notes on Using the SPI Master Driver on SPI1 Bus. For more hardware ...
SPI Master Driver SPI Master driver is a program that controls ESP32's General Purpose SPI (GP-SPI) peripheral(s) when it functions as a master. Note SPI1 is not a GP-SPI. SPI Master driver also supports SPI1 but with quite a few limitations, see Notes on Using the SPI Master Driver on SPI1 Bus. For more hardware infor...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/spi_master.html
ESP-IDF Programming Guide v5.2.1 documentation
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SPI Slave Driver
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2016-01-01
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SPI Slave Driver SPI Slave driver is a program that controls ESP32's General Purpose SPI (GP-SPI) peripheral(s) when it functions as a slave. For more hardware information about the GP-SPI peripheral(s), see ESP32 Technical Reference Manual > SPI Controller [PDF]. Terminology The terms used in relation to the SPI...
SPI Slave Driver SPI Slave driver is a program that controls ESP32's General Purpose SPI (GP-SPI) peripheral(s) when it functions as a slave. For more hardware information about the GP-SPI peripheral(s), see ESP32 Technical Reference Manual > SPI Controller [PDF]. Terminology The terms used in relation to the SPI slave...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/spi_slave.html
ESP-IDF Programming Guide v5.2.1 documentation
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ESP32-WROOM-32SE (Secure Element)
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2016-01-01
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ESP32-WROOM-32SE (Secure Element) Overview ESP32-WROOM-32SE integrates Microchip's ATECC608A cryptoauth chip in the module. ATECC608A is a secure element, which would generate and store ECC private key in the hardware. The ECC private key can be used to enhance security to connect to IoT cloud services with the use...
ESP32-WROOM-32SE (Secure Element) Overview ESP32-WROOM-32SE integrates Microchip's ATECC608A cryptoauth chip in the module. ATECC608A is a secure element, which would generate and store ECC private key in the hardware. The ECC private key can be used to enhance security to connect to IoT cloud services with the use of ...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/secure_element.html
ESP-IDF Programming Guide v5.2.1 documentation
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Touch Sensor
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2016-01-01
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Touch Sensor Introduction A touch sensor system is built on a substrate which carries electrodes and relevant connections under a protective flat surface. When the surface is touched, the capacitance variation is used to evaluate if the touch was valid. The sensing pads can be arranged in different combinations (e...
Touch Sensor Introduction A touch sensor system is built on a substrate which carries electrodes and relevant connections under a protective flat surface. When the surface is touched, the capacitance variation is used to evaluate if the touch was valid. The sensing pads can be arranged in different combinations (e.g., ...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/touch_pad.html
ESP-IDF Programming Guide v5.2.1 documentation
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Two-Wire Automotive Interface (TWAI)
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2016-01-01
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Two-Wire Automotive Interface (TWAI) Overview The Two-Wire Automotive Interface (TWAI) is a real-time serial communication protocol suited for automotive and industrial applications. It is compatible with ISO11898-1 Classical frames, thus can support Standard Frame Format (11-bit ID) and Extended Frame Format (29-b...
Two-Wire Automotive Interface (TWAI) Overview The Two-Wire Automotive Interface (TWAI) is a real-time serial communication protocol suited for automotive and industrial applications. It is compatible with ISO11898-1 Classical frames, thus can support Standard Frame Format (11-bit ID) and Extended Frame Format (29-bit I...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/twai.html
ESP-IDF Programming Guide v5.2.1 documentation
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Universal Asynchronous Receiver/Transmitter (UART)
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2016-01-01
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Universal Asynchronous Receiver/Transmitter (UART) Introduction A Universal Asynchronous Receiver/Transmitter (UART) is a hardware feature that handles communication (i.e., timing requirements and data framing) using widely-adopted asynchronous serial communication interfaces, such as RS232, RS422, and RS485. A UAR...
Universal Asynchronous Receiver/Transmitter (UART) Introduction A Universal Asynchronous Receiver/Transmitter (UART) is a hardware feature that handles communication (i.e., timing requirements and data framing) using widely-adopted asynchronous serial communication interfaces, such as RS232, RS422, and RS485. A UART pr...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/uart.html
ESP-IDF Programming Guide v5.2.1 documentation
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Project Configuration
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2016-01-01
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Project Configuration Introduction The esp-idf-kconfig package that ESP-IDF uses is based on kconfiglib, which is a Python extension to the Kconfig system. Kconfig provides a compile-time project configuration mechanism and offers configuration options of several types (e.g., integers, strings, and boolens). Kconfi...
Project Configuration Introduction The esp-idf-kconfig package that ESP-IDF uses is based on kconfiglib, which is a Python extension to the Kconfig system. Kconfig provides a compile-time project configuration mechanism and offers configuration options of several types (e.g., integers, strings, and boolens). Kconfig fi...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/kconfig.html
ESP-IDF Programming Guide v5.2.1 documentation
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Protocol Communication
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2016-01-01
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Protocol Communication Overview The Protocol Communication (protocomm) component manages secure sessions and provides the framework for multiple transports. The application can also use the protocomm layer directly to have application-specific extensions for the provisioning or non-provisioning use cases. Followin...
Protocol Communication Overview The Protocol Communication (protocomm) component manages secure sessions and provides the framework for multiple transports. The application can also use the protocomm layer directly to have application-specific extensions for the provisioning or non-provisioning use cases. Following fea...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/provisioning/protocomm.html
ESP-IDF Programming Guide v5.2.1 documentation
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Unified Provisioning
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2016-01-01
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Unified Provisioning Overview The unified provisioning support in the ESP-IDF provides an extensible mechanism to the developers to configure the device with the Wi-Fi credentials and/or other custom configuration using various transports and different security schemes. Depending on the use case, it provides a comp...
Unified Provisioning Overview The unified provisioning support in the ESP-IDF provides an extensible mechanism to the developers to configure the device with the Wi-Fi credentials and/or other custom configuration using various transports and different security schemes. Depending on the use case, it provides a complete...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/provisioning/provisioning.html
ESP-IDF Programming Guide v5.2.1 documentation
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Wi-Fi Provisioning
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2016-01-01
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Wi-Fi Provisioning Overview This component provides APIs that control the Wi-Fi provisioning service for receiving and configuring Wi-Fi credentials over SoftAP or Bluetooth LE transport via secure Protocol Communication sessions. The set of wifi_prov_mgr_ APIs help quickly implement a provisioning service that h...
Wi-Fi Provisioning Overview This component provides APIs that control the Wi-Fi provisioning service for receiving and configuring Wi-Fi credentials over SoftAP or Bluetooth LE transport via secure Protocol Communication sessions. The set of wifi_prov_mgr_ APIs help quickly implement a provisioning service that has nec...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/provisioning/wifi_provisioning.html
ESP-IDF Programming Guide v5.2.1 documentation
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FAT Filesystem Support
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2016-01-01
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FAT Filesystem Support ESP-IDF uses the FatFs library to work with FAT filesystems. FatFs resides in the fatfs component. Although the library can be used directly, many of its features can be accessed via VFS using the C standard library and POSIX API functions. Additionally, FatFs has been modified to support the...
FAT Filesystem Support ESP-IDF uses the FatFs library to work with FAT filesystems. FatFs resides in the fatfs component. Although the library can be used directly, many of its features can be accessed via VFS using the C standard library and POSIX API functions. Additionally, FatFs has been modified to support the run...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/storage/fatfs.html
ESP-IDF Programming Guide v5.2.1 documentation
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Manufacturing Utility
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2016-01-01
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Manufacturing Utility Introduction This utility is designed to create instances of factory NVS partition images on a per-device basis for mass manufacturing purposes. The NVS partition images are created from CSV files containing user-provided configurations and values. Please note that this utility only creates m...
Manufacturing Utility Introduction This utility is designed to create instances of factory NVS partition images on a per-device basis for mass manufacturing purposes. The NVS partition images are created from CSV files containing user-provided configurations and values. Please note that this utility only creates manufa...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/storage/mass_mfg.html
ESP-IDF Programming Guide v5.2.1 documentation
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Non-Volatile Storage Library
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2016-01-01
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Non-Volatile Storage Library Introduction Non-volatile storage (NVS) library is designed to store key-value pairs in flash. This section introduces some concepts used by NVS. Underlying Storage Currently, NVS uses a portion of main flash memory through the esp_partition API. The library uses all the partitions w...
Non-Volatile Storage Library Introduction Non-volatile storage (NVS) library is designed to store key-value pairs in flash. This section introduces some concepts used by NVS. Underlying Storage Currently, NVS uses a portion of main flash memory through the esp_partition API. The library uses all the partitions with dat...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/storage/nvs_flash.html
ESP-IDF Programming Guide v5.2.1 documentation
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NVS Encryption
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2016-01-01
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NVS Encryption Overview This guide provides an overview of the NVS encryption feature. NVS encryption helps to achieve secure storage on the device flash memory. Data stored in NVS partitions can be encrypted using XTS-AES in the manner similar to the one mentioned in disk encryption standard IEEE P1619. For the p...
NVS Encryption Overview This guide provides an overview of the NVS encryption feature. NVS encryption helps to achieve secure storage on the device flash memory. Data stored in NVS partitions can be encrypted using XTS-AES in the manner similar to the one mentioned in disk encryption standard IEEE P1619. For the purpos...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/storage/nvs_encryption.html
ESP-IDF Programming Guide v5.2.1 documentation
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NVS Partition Generator Utility
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2016-01-01
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NVS Partition Generator Utility Introduction The utility nvs_flash/nvs_partition_generator/nvs_partition_gen.py creates a binary file, compatible with the NVS architecture defined in Non-Volatile Storage Library, based on the key-value pairs provided in a CSV file. This utility is ideally suited for generating a b...
NVS Partition Generator Utility Introduction The utility nvs_flash/nvs_partition_generator/nvs_partition_gen.py creates a binary file, compatible with the NVS architecture defined in Non-Volatile Storage Library, based on the key-value pairs provided in a CSV file. This utility is ideally suited for generating a binary...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/storage/nvs_partition_gen.html
ESP-IDF Programming Guide v5.2.1 documentation
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SD/SDIO/MMC Driver
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2016-01-01
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SD/SDIO/MMC Driver Overview The SD/SDIO/MMC driver currently supports SD memory, SDIO cards, and eMMC chips. This is a protocol level driver built on top of SDMMC and SD SPI host drivers. SDMMC and SD SPI host drivers (driver/sdmmc/include/driver/sdmmc_host.h and driver/spi/include/driver/sdspi_host.h) provide API...
SD/SDIO/MMC Driver Overview The SD/SDIO/MMC driver currently supports SD memory, SDIO cards, and eMMC chips. This is a protocol level driver built on top of SDMMC and SD SPI host drivers. SDMMC and SD SPI host drivers (driver/sdmmc/include/driver/sdmmc_host.h and driver/spi/include/driver/sdspi_host.h) provide API func...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/storage/sdmmc.html
ESP-IDF Programming Guide v5.2.1 documentation
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Partitions API
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2016-01-01
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Partitions API Overview The esp_partition component has higher-level API functions which work with partitions defined in the Partition Tables. These APIs are based on lower level API provided by SPI Flash API. Partition Table API ESP-IDF projects use a partition table to maintain information about various regio...
Partitions API Overview The esp_partition component has higher-level API functions which work with partitions defined in the Partition Tables. These APIs are based on lower level API provided by SPI Flash API. Partition Table API ESP-IDF projects use a partition table to maintain information about various regions of SP...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/storage/partition.html
ESP-IDF Programming Guide v5.2.1 documentation
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SPIFFS Filesystem
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2016-01-01
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SPIFFS Filesystem Overview SPIFFS is a file system intended for SPI NOR flash devices on embedded targets. It supports wear levelling, file system consistency checks, and more. Notes Currently, SPIFFS does not support directories, it produces a flat structure. If SPIFFS is mounted under /spiffs , then creati...
SPIFFS Filesystem Overview SPIFFS is a file system intended for SPI NOR flash devices on embedded targets. It supports wear levelling, file system consistency checks, and more. Notes - Currently, SPIFFS does not support directories, it produces a flat structure. If SPIFFS is mounted under /spiffs, then creating a file ...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/storage/spiffs.html
ESP-IDF Programming Guide v5.2.1 documentation
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Virtual Filesystem Component
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2016-01-01
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Virtual Filesystem Component Overview Virtual filesystem (VFS) component provides a unified interface for drivers which can perform operations on file-like objects. These can be real filesystems (FAT, SPIFFS, etc.) or device drivers which provide a file-like interface. This component allows C library functions, su...
Virtual Filesystem Component Overview Virtual filesystem (VFS) component provides a unified interface for drivers which can perform operations on file-like objects. These can be real filesystems (FAT, SPIFFS, etc.) or device drivers which provide a file-like interface. This component allows C library functions, such as...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/storage/vfs.html
ESP-IDF Programming Guide v5.2.1 documentation
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Page Not Found
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espressif.com
2016-01-01
7c7a989a6f8437ed
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Page Not Found Note We are sorry. The page you requested could not be found. This error occurs maybe because the current chip or version you choose does not support the feature you are looking for. If you want to provide feedback about this document, please let us know what exact document you want to access, so that...
Page Not Found Note We are sorry. The page you requested could not be found. This error occurs maybe because the current chip or version you choose does not support the feature you are looking for. If you want to provide feedback about this document, please let us know what exact document you want to access, so that we...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/404.html
ESP-IDF Programming Guide v5.2.1 documentation
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Application Level Tracing
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2016-01-01
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Application Level Tracing Overview ESP-IDF provides a useful feature for application behavior analysis called Application Level Tracing. The feature can be enabled in menuconfig and allows transfer of arbitrary data between the host and ESP32 via JTAG interface with minimal overhead on program execution. Developer...
Application Level Tracing Overview ESP-IDF provides a useful feature for application behavior analysis called Application Level Tracing. The feature can be enabled in menuconfig and allows transfer of arbitrary data between the host and ESP32 via JTAG interface with minimal overhead on program execution. Developers can...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/app_trace.html
ESP-IDF Programming Guide v5.2.1 documentation
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Call Function with External Stack
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2016-01-01
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Call Function with External Stack Overview A given function can be executed with a user-allocated stack space which is independent of current task stack. This mechanism can be used to save stack space wasted by tasks which call a common function with intensive stack usage such as printf . The given function can be...
Call Function with External Stack Overview A given function can be executed with a user-allocated stack space which is independent of current task stack. This mechanism can be used to save stack space wasted by tasks which call a common function with intensive stack usage such as printf. The given function can be calle...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/esp_function_with_shared_stack.html
ESP-IDF Programming Guide v5.2.1 documentation
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Chip Revision
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2016-01-01
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Chip Revision Overview ESP32 may have different revisions. These revisions mainly fix some issues, and sometimes also bring new features to the chip. Versioning Scheme describes the versioning of these chip revisions, and the APIs to read the versions at runtime. There are some considerations of compatibility amon...
Chip Revision Overview ESP32 may have different revisions. These revisions mainly fix some issues, and sometimes also bring new features to the chip. Versioning Scheme describes the versioning of these chip revisions, and the APIs to read the versions at runtime. There are some considerations of compatibility among app...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/chip_revision.html
ESP-IDF Programming Guide v5.2.1 documentation
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Console
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2016-01-01
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Console ESP-IDF provides console component, which includes building blocks needed to develop an interactive console over serial port. This component includes the following features: Line editing, provided by linenoise library. This includes handling of backspace and arrow keys, scrolling through command history, co...
Console ESP-IDF provides console component, which includes building blocks needed to develop an interactive console over serial port. This component includes the following features: Line editing, provided by linenoise library. This includes handling of backspace and arrow keys, scrolling through command history, comman...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/console.html
ESP-IDF Programming Guide v5.2.1 documentation
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eFuse Manager
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2016-01-01
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eFuse Manager Introduction The eFuse Manager library is designed to structure access to eFuse bits and make using these easy. This library operates eFuse bits by a structure name which is assigned in eFuse table. This sections introduces some concepts used by eFuse Manager. Hardware Description The ESP32 has a n...
eFuse Manager Introduction The eFuse Manager library is designed to structure access to eFuse bits and make using these easy. This library operates eFuse bits by a structure name which is assigned in eFuse table. This sections introduces some concepts used by eFuse Manager. Hardware Description The ESP32 has a number o...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/efuse.html
ESP-IDF Programming Guide v5.2.1 documentation
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Error Code and Helper Functions
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2016-01-01
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Error Code and Helper Functions This section lists definitions of common ESP-IDF error codes and several helper functions related to error handling. For general information about error codes in ESP-IDF, see Error Handling. For the full list of error codes defined in ESP-IDF, see Error Codes Reference. API Referenc...
Error Code and Helper Functions This section lists definitions of common ESP-IDF error codes and several helper functions related to error handling. For general information about error codes in ESP-IDF, see Error Handling. For the full list of error codes defined in ESP-IDF, see Error Codes Reference. API Reference Hea...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/esp_err.html
ESP-IDF Programming Guide v5.2.1 documentation
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ESP HTTPS OTA
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2016-01-01
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ESP HTTPS OTA Overview esp_https_ota provides simplified APIs to perform firmware upgrades over HTTPS. It is an abstraction layer over the existing OTA APIs. Application Example esp_err_t do_firmware_upgrade() { esp_http_client_config_t config = { .url = CONFIG_FIRMWARE_UPGRADE_URL, .cert_pem = (char *)server_...
ESP HTTPS OTA Overview esp_https_ota provides simplified APIs to perform firmware upgrades over HTTPS. It is an abstraction layer over the existing OTA APIs. Application Example esp_err_t do_firmware_upgrade() { esp_http_client_config_t config = { .url = CONFIG_FIRMWARE_UPGRADE_URL, .cert_pem = (char *)server_cert_pem_...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/esp_https_ota.html
ESP-IDF Programming Guide v5.2.1 documentation
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Event Loop Library
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2016-01-01
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Event Loop Library Overview The event loop library allows components to declare events so that other components can register handlers -- codes that executes when those events occur. This allows loosely-coupled components to attach desired behavior to state changes of other components without application involvement...
Event Loop Library Overview The event loop library allows components to declare events so that other components can register handlers -- codes that executes when those events occur. This allows loosely-coupled components to attach desired behavior to state changes of other components without application involvement. Th...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/esp_event.html
ESP-IDF Programming Guide v5.2.1 documentation
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FreeRTOS Overview
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2016-01-01
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FreeRTOS Overview Overview FreeRTOS is an open source RTOS (real-time operating system) kernel that is integrated into ESP-IDF as a component. Thus, all ESP-IDF applications and many ESP-IDF components are written based on FreeRTOS. The FreeRTOS kernel is ported to all architectures (i.e., Xtensa and RISC-V) availa...
FreeRTOS Overview Overview FreeRTOS is an open source RTOS (real-time operating system) kernel that is integrated into ESP-IDF as a component. Thus, all ESP-IDF applications and many ESP-IDF components are written based on FreeRTOS. The FreeRTOS kernel is ported to all architectures (i.e., Xtensa and RISC-V) available ...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/freertos.html
ESP-IDF Programming Guide v5.2.1 documentation
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FreeRTOS (IDF)
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2016-01-01
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FreeRTOS (IDF) This document provides information regarding the dual-core SMP implementation of FreeRTOS inside ESP-IDF. This document is split into the following sections: Sections Overview The original FreeRTOS (hereinafter referred to as Vanilla FreeRTOS) is a compact and efficient real-time operating system s...
FreeRTOS (IDF) This document provides information regarding the dual-core SMP implementation of FreeRTOS inside ESP-IDF. This document is split into the following sections: Sections Overview The original FreeRTOS (hereinafter referred to as Vanilla FreeRTOS) is a compact and efficient real-time operating system support...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/freertos_idf.html
ESP-IDF Programming Guide v5.2.1 documentation
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FreeRTOS (Supplemental Features)
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2016-01-01
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FreeRTOS (Supplemental Features) ESP-IDF provides multiple features to supplement the features offered by FreeRTOS. These supplemental features are available on all FreeRTOS implementations supported by ESP-IDF (i.e., ESP-IDF FreeRTOS and Amazon SMP FreeRTOS). This document describes these supplemental features and i...
FreeRTOS (Supplemental Features) ESP-IDF provides multiple features to supplement the features offered by FreeRTOS. These supplemental features are available on all FreeRTOS implementations supported by ESP-IDF (i.e., ESP-IDF FreeRTOS and Amazon SMP FreeRTOS). This document describes these supplemental features and is ...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/freertos_additions.html
ESP-IDF Programming Guide v5.2.1 documentation
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Heap Memory Allocation
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2016-01-01
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Heap Memory Allocation Stack and Heap ESP-IDF applications use the common computer architecture patterns of stack (dynamic memory allocated by program control flow), heap (dynamic memory allocated by function calls), and static memory (memory allocated at compile time). Because ESP-IDF is a multi-threaded RTOS env...
Heap Memory Allocation Stack and Heap ESP-IDF applications use the common computer architecture patterns of stack (dynamic memory allocated by program control flow), heap (dynamic memory allocated by function calls), and static memory (memory allocated at compile time). Because ESP-IDF is a multi-threaded RTOS environm...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/mem_alloc.html
ESP-IDF Programming Guide v5.2.1 documentation
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Memory Management for MMU Supported Memory
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2016-01-01
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Memory Management for MMU Supported Memory Introduction ESP32 Memory Management Unit (MMU) is relatively simple. It can do memory address translation between physical memory addresses and virtual memory addresses. So CPU can access physical memories via virtual addresses. There are multiple types of virtual memory ...
Memory Management for MMU Supported Memory Introduction ESP32 Memory Management Unit (MMU) is relatively simple. It can do memory address translation between physical memory addresses and virtual memory addresses. So CPU can access physical memories via virtual addresses. There are multiple types of virtual memory addr...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/mm.html
ESP-IDF Programming Guide v5.2.1 documentation
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Heap Memory Debugging
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espressif.com
2018-11-05
2ad3ff91e0b382c9
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Heap Memory Debugging Overview ESP-IDF integrates tools for requesting heap information, heap corruption detection, and heap tracing. These can help track down memory-related bugs. For general information about the heap memory allocator, see Heap Memory Allocation. Heap Information To obtain information about t...
Heap Memory Debugging Overview ESP-IDF integrates tools for requesting heap information, heap corruption detection, and heap tracing. These can help track down memory-related bugs. For general information about the heap memory allocator, see Heap Memory Allocation. Heap Information To obtain information about the state...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/heap_debug.html
ESP-IDF Programming Guide v5.2.1 documentation
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High Resolution Timer (ESP Timer)
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espressif.com
2016-01-01
bd05d5ea30168f89
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High Resolution Timer (ESP Timer) Overview Although FreeRTOS provides software timers, FreeRTOS software timers have a few limitations: Maximum resolution is equal to the RTOS tick period Timer callbacks are dispatched from a low-priority timer service (i.e., daemon) task. This task can be preempted by other tasks...
High Resolution Timer (ESP Timer) Overview Although FreeRTOS provides software timers, FreeRTOS software timers have a few limitations: Maximum resolution is equal to the RTOS tick period Timer callbacks are dispatched from a low-priority timer service (i.e., daemon) task. This task can be preempted by other tasks, lea...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/esp_timer.html
ESP-IDF Programming Guide v5.2.1 documentation
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Internal and Unstable APIs
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espressif.com
2016-01-01
a205da143370b4bb
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Internal and Unstable APIs This section is listing some APIs that are internal or likely to be changed or removed in the next releases of ESP-IDF. API Reference Header File This header file can be included with: #include "esp_rom_sys.h" Functions void esp_rom_software_reset_system(void) Software Reset digit...
Internal and Unstable APIs This section is listing some APIs that are internal or likely to be changed or removed in the next releases of ESP-IDF. API Reference Header File This header file can be included with: #include "esp_rom_sys.h" Functions - void esp_rom_software_reset_system(void) Software Reset digital core in...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/internal-unstable.html
ESP-IDF Programming Guide v5.2.1 documentation
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Inter-Processor Call (IPC)
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espressif.com
2016-01-01
8a033a13e87db369
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Inter-Processor Call (IPC) Note IPC stands for an "Inter-Processor Call" and NOT "Inter-Process Communication" as found on other operating systems. Overview Due to the dual core nature of the ESP32, there are some scenarios where a certain callback must be executed from a particular core such as: When allocating...
Inter-Processor Call (IPC) Note IPC stands for an "Inter-Processor Call" and NOT "Inter-Process Communication" as found on other operating systems. Overview Due to the dual core nature of the ESP32, there are some scenarios where a certain callback must be executed from a particular core such as: When allocating an ISR...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/ipc.html
ESP-IDF Programming Guide v5.2.1 documentation
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Interrupt Allocation
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espressif.com
2016-01-01
22aeb31cb7609693
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Interrupt Allocation Overview The ESP32 has two cores, with 32 interrupts each. Each interrupt has a fixed priority, most (but not all) interrupts are connected to the interrupt matrix. Because there are more interrupt sources than interrupts, sometimes it makes sense to share an interrupt in multiple drivers. The...
Interrupt Allocation Overview The ESP32 has two cores, with 32 interrupts each. Each interrupt has a fixed priority, most (but not all) interrupts are connected to the interrupt matrix. Because there are more interrupt sources than interrupts, sometimes it makes sense to share an interrupt in multiple drivers. The esp_...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/intr_alloc.html
ESP-IDF Programming Guide v5.2.1 documentation
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Logging library
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espressif.com
2016-01-01
cd3b355f406f0aa
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Logging library Overview The logging library provides three ways for setting log verbosity: At compile time: in menuconfig, set the verbosity level using the option CONFIG_LOG_DEFAULT_LEVEL. Optionally, also in menuconfig, set the maximum verbosity level using the option CONFIG_LOG_MAXIMUM_LEVEL. By default, this ...
Logging library Overview The logging library provides three ways for setting log verbosity: At compile time: in menuconfig, set the verbosity level using the option CONFIG_LOG_DEFAULT_LEVEL. Optionally, also in menuconfig, set the maximum verbosity level using the option CONFIG_LOG_MAXIMUM_LEVEL. By default, this is th...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/log.html
ESP-IDF Programming Guide v5.2.1 documentation
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Miscellaneous System APIs
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espressif.com
2016-01-01
e295f997a061b9c3
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Miscellaneous System APIs Software Reset To perform software reset of the chip, the esp_restart() function is provided. When the function is called, execution of the program stops, both CPUs are reset, the application is loaded by the bootloader and starts execution again. Additionally, the esp_register_shutdown...
Miscellaneous System APIs Software Reset To perform software reset of the chip, the esp_restart() function is provided. When the function is called, execution of the program stops, both CPUs are reset, the application is loaded by the bootloader and starts execution again. Additionally, the esp_register_shutdown_handle...
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https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/misc_system_api.html
ESP-IDF Programming Guide v5.2.1 documentation
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