| {"can_message": {"message_name": "BMS_STATUS_ID", "can_id": 419385573, "frame_type": "Extended frame", "dlc": 8, "cycle_time_ms": 100}, "trace_summary": "BmsStatus_OnCanRx accepts the extended BMS status frame with identifier 0x18FF50E5 and an 8-byte payload. It decodes bytes 0–1 as an unsigned little-endian pack-voltage value and bytes 2–3 as a signed little-endian pack-current value, applies a factor of 0.1 to each, and stores the results in the corresponding g_bms_status members. The excerpt contains no encoder for this message.", "signal_mappings": [{"signal_name": "PackVoltage", "start_bit": 0, "bit_length": 16, "byte_order": "Little-endian (least-significant byte first)", "is_signed": false, "factor": 0.1, "offset": 0, "unit": "V", "internal_variable": "g_bms_status.pack_voltage_v", "decode_expression": "(float)voltage_raw * 0.1f, where voltage_raw is data[0] | (data[1] << 8)", "encode_expression": "No encoder for this receive-side message appears in the source excerpt.", "handling_function": "BmsStatus_OnCanRx", "source_location": {"file_path": "src/comm/bms_status_rx.c", "start_line": 132, "end_line": 141}}, {"signal_name": "PackCurrent", "start_bit": 16, "bit_length": 16, "byte_order": "Little-endian (least-significant byte first)", "is_signed": true, "factor": 0.1, "offset": 0, "unit": "A", "internal_variable": "g_bms_status.pack_current_a", "decode_expression": "(float)current_raw * 0.1f, where current_raw is the signed 16-bit value formed from data[2] | (data[3] << 8)", "encode_expression": "No encoder for this receive-side message appears in the source excerpt.", "handling_function": "BmsStatus_OnCanRx", "source_location": {"file_path": "src/comm/bms_status_rx.c", "start_line": 132, "end_line": 141}}], "source_artifact": {"source_text": "#define BMS_STATUS_ID 0x18FF50E5UL\n#define BMS_STATUS_DLC 8U\n#define BMS_STATUS_CYCLE_MS 100U\n#define BMS_STATUS_EXTENDED_FRAME 1U\n\ntypedef struct {\n float pack_voltage_v;\n float pack_current_a;\n} BmsStatus;\n\nstatic BmsStatus g_bms_status;\n\nvoid BmsStatus_OnCanRx(const CanFrame *frame)\n{\n if (frame->id != BMS_STATUS_ID || frame->dlc != BMS_STATUS_DLC) {\n return;\n }\n const uint16_t voltage_raw = (uint16_t)frame->data[0] | ((uint16_t)frame->data[1] << 8);\n const int16_t current_raw = (int16_t)((uint16_t)frame->data[2] | ((uint16_t)frame->data[3] << 8));\n g_bms_status.pack_voltage_v = (float)voltage_raw * 0.1f;\n g_bms_status.pack_current_a = (float)current_raw * 0.1f;\n}", "source_language": "C", "file_path": "src/comm/bms_status_rx.c", "start_line": 120, "end_line": 141}, "processing_functions": ["BmsStatus_OnCanRx"]} | |
| {"can_message": {"message_name": "THERMAL_STATUS_ID", "can_id": 419390113, "frame_type": "Extended frame", "dlc": 8, "cycle_time_ms": 250}, "trace_summary": "ThermalStatus_OnCanRx filters for the extended thermal-status frame with identifier 0x18FF62A1 and an 8-byte payload. It reads bytes 0–1 as a signed little-endian temperature value, scales it by 0.01, and stores it in g_thermal.max_cell_temp_c. Byte 2 is read as an unsigned pump-duty value, scaled by 0.5, and stored in g_thermal.pump_duty_pct. The excerpt contains no encoder for this message.", "signal_mappings": [{"signal_name": "MaxCellTemperature", "start_bit": 0, "bit_length": 16, "byte_order": "Little-endian (least-significant byte first)", "is_signed": true, "factor": 0.01, "offset": 0, "unit": "degC", "internal_variable": "g_thermal.max_cell_temp_c", "decode_expression": "(float)temp_raw * 0.01f, where temp_raw is the signed 16-bit value formed from data[0] | (data[1] << 8)", "encode_expression": "No encoder for this receive-side message appears in the source excerpt.", "handling_function": "ThermalStatus_OnCanRx", "source_location": {"file_path": "src/thermal/thermal_status_rx.c", "start_line": 423, "end_line": 430}}, {"signal_name": "PumpDuty", "start_bit": 16, "bit_length": 8, "byte_order": "Little-endian (single-byte value)", "is_signed": false, "factor": 0.5, "offset": 0, "unit": "%", "internal_variable": "g_thermal.pump_duty_pct", "decode_expression": "(float)frame->data[2] * 0.5f", "encode_expression": "No encoder for this receive-side message appears in the source excerpt.", "handling_function": "ThermalStatus_OnCanRx", "source_location": {"file_path": "src/thermal/thermal_status_rx.c", "start_line": 423, "end_line": 430}}], "source_artifact": {"source_text": "#define THERMAL_STATUS_ID 0x18FF62A1UL\n#define THERMAL_STATUS_DLC 8U\n#define THERMAL_STATUS_CYCLE_MS 250U\n#define THERMAL_STATUS_EXTENDED_FRAME 1U\n\ntypedef struct {\n float max_cell_temp_c;\n float pump_duty_pct;\n} ThermalStatus;\n\nstatic ThermalStatus g_thermal;\n\nvoid ThermalStatus_OnCanRx(const CanFrame *frame)\n{\n if (frame->id != THERMAL_STATUS_ID || frame->dlc != THERMAL_STATUS_DLC) {\n return;\n }\n const int16_t temp_raw = (int16_t)((uint16_t)frame->data[0] | ((uint16_t)frame->data[1] << 8));\n const uint8_t pump_duty_raw = frame->data[2];\n g_thermal.max_cell_temp_c = (float)temp_raw * 0.01f;\n g_thermal.pump_duty_pct = (float)pump_duty_raw * 0.5f;\n}", "source_language": "C", "file_path": "src/thermal/thermal_status_rx.c", "start_line": 410, "end_line": 430}, "processing_functions": ["ThermalStatus_OnCanRx"]} | |
| {"can_message": {"message_name": "CHARGE_LIMITS_ID", "can_id": 1313, "frame_type": "Standard data frame", "dlc": 8, "cycle_time_ms": 20}, "trace_summary": "ChargeLimits_Transmit constructs the standard 8-byte frame with identifier 0x521. It converts the charge and discharge current limits to unsigned raw values by dividing by 0.1, then writes them in little-endian order to bytes 0–1 and 2–3, respectively. Bytes 4–7 are set to zero before Can_Send transmits the frame.", "signal_mappings": [{"signal_name": "ChargeCurrentLimit", "start_bit": 0, "bit_length": 16, "byte_order": "Little-endian (least-significant byte first)", "is_signed": false, "factor": 0.1, "offset": 0, "unit": "A", "internal_variable": "g_limits.charge_current_limit_a", "decode_expression": "No receive decoder for this transmit-side message appears in the source excerpt.", "encode_expression": "charge_raw = (uint16_t)lroundf(g_limits.charge_current_limit_a / 0.1f); data[0] = charge_raw & 0xFF; data[1] = charge_raw >> 8", "handling_function": "ChargeLimits_Transmit", "source_location": {"file_path": "src/comm/charge_limits_tx.c", "start_line": 251, "end_line": 258}}, {"signal_name": "DischargeCurrentLimit", "start_bit": 16, "bit_length": 16, "byte_order": "Little-endian (least-significant byte first)", "is_signed": false, "factor": 0.1, "offset": 0, "unit": "A", "internal_variable": "g_limits.discharge_current_limit_a", "decode_expression": "No receive decoder for this transmit-side message appears in the source excerpt.", "encode_expression": "discharge_raw = (uint16_t)lroundf(g_limits.discharge_current_limit_a / 0.1f); data[2] = discharge_raw & 0xFF; data[3] = discharge_raw >> 8", "handling_function": "ChargeLimits_Transmit", "source_location": {"file_path": "src/comm/charge_limits_tx.c", "start_line": 251, "end_line": 259}}], "source_artifact": {"source_text": "#define CHARGE_LIMITS_ID 0x521U\n#define CHARGE_LIMITS_DLC 8U\n#define CHARGE_LIMITS_CYCLE_MS 20U\n#define CHARGE_LIMITS_EXTENDED_FRAME 0U\n\ntypedef struct {\n float charge_current_limit_a;\n float discharge_current_limit_a;\n} ChargeLimits;\n\nstatic ChargeLimits g_limits;\n\nvoid ChargeLimits_Transmit(CanFrame *frame)\n{\n const uint16_t charge_raw = (uint16_t)lroundf(g_limits.charge_current_limit_a / 0.1f);\n const uint16_t discharge_raw = (uint16_t)lroundf(g_limits.discharge_current_limit_a / 0.1f);\n frame->id = CHARGE_LIMITS_ID;\n frame->dlc = CHARGE_LIMITS_DLC;\n frame->data[0] = (uint8_t)(charge_raw & 0xFFU);\n frame->data[1] = (uint8_t)(charge_raw >> 8);\n frame->data[2] = (uint8_t)(discharge_raw & 0xFFU);\n frame->data[3] = (uint8_t)(discharge_raw >> 8);\n frame->data[4] = 0U;\n frame->data[5] = 0U;\n frame->data[6] = 0U;\n frame->data[7] = 0U;\n Can_Send(frame);\n}", "source_language": "C", "file_path": "src/comm/charge_limits_tx.c", "start_line": 240, "end_line": 266}, "processing_functions": ["ChargeLimits_Transmit", "Can_Send"]} | |