串口发送完成中断回调函数的使用

发布于 2020-09-16 10:33:56 浏览：3137 订阅该版

文武斌 2020-11-12

这家伙很懒，什么也没写！

可以改成下面这样

```

/* UART in mode Receiver -------------------------------------------------*/
    if ((__HAL_UART_GET_FLAG(&(uart->handle), UART_FLAG_RXNE) != RESET) &&
            (__HAL_UART_GET_IT_SOURCE(&(uart->handle), UART_IT_RXNE) != RESET))
    {
        rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
    }
#ifdef RT_SERIAL_USING_DMA
    else if ((uart->uart_dma_flag) && (__HAL_UART_GET_FLAG(&(uart->handle), UART_FLAG_IDLE) != RESET)
             && (__HAL_UART_GET_IT_SOURCE(&(uart->handle), UART_IT_IDLE) != RESET))
    {
        level = rt_hw_interrupt_disable();
        recv_total_index = serial->config.bufsz - __HAL_DMA_GET_COUNTER(&(uart->dma_rx.handle));
        recv_len = recv_total_index - uart->dma_rx.last_index;
        uart->dma_rx.last_index = recv_total_index;
        rt_hw_interrupt_enable(level);

if (recv_len)
        {
            rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_DMADONE | (recv_len << 8));
        }
        __HAL_UART_CLEAR_IDLEFLAG(&uart->handle);
    }
#endif
    else if (__HAL_UART_GET_FLAG(&(uart->handle), UART_FLAG_TC) &&
            (__HAL_UART_GET_IT_SOURCE(&(uart->handle), UART_IT_TC) != RESET))
    {
#ifdef RT_SERIAL_USING_DMA
        if ((serial->parent.open_flag & RT_DEVICE_FLAG_DMA_TX) != 0)
        {
            HAL_UART_IRQHandler(&(uart->handle));
        }
#endif
				if ((serial->parent.open_flag & RT_DEVICE_FLAG_INT_TX) != 0)
        {
            rt_hw_serial_isr(serial, RT_SERIAL_EVENT_TX_DONE);
        }
        UART_INSTANCE_CLEAR_FUNCTION(&(uart->handle), UART_FLAG_TC);
    }
    else .....
```