Function uart_tx

src/board_controller/muse/muse_bglib/uart.cpp:193–209

}

int uart_tx (int len, unsigned char *data)
{
    DWORD r, written;
    while (len)
    {

        r = WriteFile (serial_handle, data, len, &written, NULL);
        if (!r)
        {
            return -1;
        }
        len -= written;
        data += written;
    }

    return 0;
}
int uart_rx (int len, unsigned char *data, int timeout_ms)
{
    int l = len;