Function uart_msg_getc

bsp/phytium/libraries/drivers/drv_usart_msg.c:150–181

}

static int uart_msg_getc(struct rt_serial_device *serial)
{
    int ch;
    struct drv_usart_msg *uart_msg = RT_NULL;
    FUartMsg *uart_msg_ptr = RT_NULL;
    RT_ASSERT(serial != RT_NULL);

    uart_msg = rt_container_of(serial, struct drv_usart_msg, serial);
    uart_msg_ptr = uart_msg->handle;


    if(RT_RINGBUFFER_EMPTY == rt_ringbuffer_status(recv_ringbuffer))
    {
        FUartMsgRecvBufferNoBlocking(uart_msg_ptr);
    }

    if(0 == rt_ringbuffer_getchar(recv_ringbuffer, (rt_uint8_t *)&ch))
    {
        return -1;
    }

    if (ch == 0xffff)
    {
        ch = -1;
    }
    else
    {
        ch &= 0xff;
    }

    return ch;
}

static void Ft_Os_Uart_Msg_Callback(void *Args, u32 Event, u32 EventData)
{