File size: 4,066 Bytes
cd886b3 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | #include <iostream>
#include <fstream>
#include <ostream>
#include <sstream>
#include <string>
#include <cstring>
#include <iomanip>
#include <thread>
#include <atomic>
#include <cstdint>
#include <chrono>
#include <unistd.h>
#include <termios.h>
#include <fcntl.h>
#include <ext/stdio_filebuf.h>
int setup_tty(int fd, uint32_t baudrate);
void calc_speed(size_t size, std::reference_wrapper<std::atomic<size_t>> sent_bytes);
inline uint64_t time_milli() {
return std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch()).count();
}
int main(int argc, char *argv[]) {
std::atomic<size_t> sent_bytes(0);
if(argc != 3) {
std::cerr << "Usage: " << argv[0] << " <input file> <output file>" << std::endl;
return 1;
}
// Open input file
std::ifstream input(argv[1], std::ios::binary);
if(!input) {
std::cerr << "Error: Could not open input file " << argv[1] << std::endl;
return 1;
}
// Open output TTY
int fd = open(argv[2], O_RDWR);
if(fd == -1) {
std::cerr << "Error: Could not open output TTY " << argv[2] << std::endl;
return 1;
}
setup_tty(fd, B460800);
// Get input file size
input.seekg(0, std::ios::end);
const size_t size = input.tellg();
input.seekg(0, std::ios::beg);
// Turn size int HEX string
std::stringstream size_str;
size_str << std::setfill('0') << std::setw(8) << std::hex << size;
std::cout << "Size: " << size_str.str() << std::endl;
// Wait for user to press enter
std::cout << "Press enter to start transfer" << std::endl;
while(getchar() != '\n');
// Write size to output
size_str << '\n';
write(fd, size_str.str().c_str(), 9);
char ret_size[9] = {0};
read(fd, ret_size, 8);
std::cout << "Returned size:" << ret_size << std::endl;
usleep(100000);
std::thread speed_thread(calc_speed, size, std::ref(sent_bytes));
// Write input to output
while(1) {
char buffer[16] = {0};
input.read(buffer, 16);
size_t copied = input.gcount();
write(fd, buffer, copied);
usleep(1);
if(copied == 0)
break;
sent_bytes += copied;
}
// Close files
speed_thread.join();
std::cout << "\nDone" << std::endl;
close(fd);
input.close();
return 0;
}
void calc_speed(size_t size, std::reference_wrapper<std::atomic<size_t>> sent_bytes){
size_t sent = 0;
uint64_t start = time_milli();
std::cout << std::fixed << std::setprecision(4);
while(size > sent) {
sent = sent_bytes.get().load();
double time_spent = (time_milli() - start);
double KiBpS = (1000.0/1024.0)*(double(sent)/time_spent);
double ratio_sent = 100.0*double(sent)/double(size);
std::cout << "Sent " << sent << "/" << size << "bytes (";
std::cout << (ratio_sent) << "%) " << KiBpS << "KiB/S \r" << std::flush;
usleep(10000);
}
}
int setup_tty(int fd, uint32_t baudrate) {
// Set output TTY to raw mode
struct termios tty;
memset(&tty, 0, sizeof(tty));
if ( tcgetattr ( fd, &tty ) != 0 ) {
std::cerr << "Error " << errno << " from tcgetattr: " << strerror(errno) << std::endl;
return 1;
}
cfsetospeed(&tty, baudrate);
cfsetispeed(&tty, baudrate);
/* Setting other Port Stuff */
tty.c_cflag &= ~PARENB; // Make 8n1
tty.c_cflag &= ~CSTOPB;
tty.c_cflag &= ~CSIZE;
tty.c_cflag |= CS8;
tty.c_cflag &= ~CRTSCTS; // no flow control
tty.c_lflag = 0; // no signaling chars, no echo, no canonical processing
tty.c_oflag = 0; // no remapping, no delays
tty.c_cc[VMIN] = 0; // read doesn't block
tty.c_cc[VTIME] = 5; // 0.5 seconds read timeout
tty.c_cflag |= CREAD | CLOCAL; // turn on READ & ignore ctrl lines
tty.c_iflag &= ~(IXON | IXOFF | IXANY);// turn off s/w flow ctrl
tty.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG); // make raw
tty.c_oflag &= ~OPOST; // make raw
/* Flush Port, then applies attributes */
tcflush( fd, TCIFLUSH );
if ( tcsetattr ( fd, TCSANOW, &tty ) != 0) {
std::cerr << "Error " << errno << " from tcsetattr" << std::endl;
return 1;
}
return 0;
}
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