buf[pos] = '\0'; tcsetattr(fd, TCSANOW, &old); return pos;
void serial_read(int fd, char *buffer, size_t buf_size) ssize_t n = read(fd, buffer, buf_size - 1); if (n < 0) perror("read"); else if (n > 0) buffer[n] = '\0'; printf("Read %ld bytes: %s\n", n, buffer); serial port c example
tty.c_cflag |= (CLOCAL | CREAD); // Ignore modem control lines, enable receiver tty.c_cflag &= ~CSIZE; // Clear character size bits tty.c_cflag |= CS8; // 8 bits per byte tty.c_cflag &= ~PARENB; // No parity tty.c_cflag &= ~CSTOPB; // 1 stop bit tty.c_cflag &= ~CRTSCTS; // No hardware flow control buf[pos] = '\0'; tcsetattr(fd, TCSANOW, &old); return pos;