中断服务函数的配置

/*!
    \brief      this function handles USART0 exception
    \param[in]  none
    \param[out] none
    \retval     none
*/
void USART0_IRQHandler(void)
{
    uint8_t clea123r = clea123r;
    if (RESET != usart_interrupt_flag_get(USART0, USART_INT_FLAG_RBNE))
    {
        Com0_rx_buffer[Com0_rx_counter++] = (uint8_t)usart_data_receive(USART0);
    }else if(RESET != usart_interrupt_flag_get(USART0, USART_INT_FLAG_IDLE))
        {
            usart_interrupt_flag_clear(USART0,USART_INT_FLAG_IDLE); /* 清除空闲中断标志位 */
            usart_data_receive(USART0); /* 清除接收完成标志位 */
            Com0_rx_counter=0;
            printf("com0 idle test rx:%s\r\n",Com0_rx_buffer);
            memset(Com0_rx_buffer,0,strlen((char *)Com0_rx_buffer));
    
        }
}

com0_usart0的初始化配置

void com0_init(void)
{
    /* com init config */
    gd_eval_com_init(EVAL_COM0);
    nvic_irq_enable(USART0_IRQn,0,1);
    usart_interrupt_enable(USART0, USART_INT_RBNE);         /* 使能USART0读区非空中断 */  
    usart_interrupt_enable(USART0, USART_INT_IDLE);         /* 使能USART0空闲中断 */
}

/*!
    \brief      configure COM port
    \param[in]  com: COM on the board
      \arg        EVAL_COM0: COM0 on the board
      \arg        EVAL_COM1: COM1 on the board
    \param[out] none
    \retval     none
*/
void gd_eval_com_init(uint32_t com)
{
    uint32_t com_id = 0U;
    if(EVAL_COM0 == com){
        com_id = 0U;
    }else if(EVAL_COM1 == com){
        com_id = 1U;
    }
    
    /* enable GPIO clock */
    rcu_periph_clock_enable(COM_GPIO_CLK[com_id]);

    /* enable USART clock */
    rcu_periph_clock_enable(COM_CLK[com_id]);

    /* connect port to USARTx_Tx */
    gpio_init(COM_GPIO_PORT[com_id], GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, COM_TX_PIN[com_id]);

    /* connect port to USARTx_Rx */
    gpio_init(COM_GPIO_PORT[com_id], GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, COM_RX_PIN[com_id]);

    /* USART configure */
    usart_deinit(com);
    usart_baudrate_set(com, 115200U);
    usart_word_length_set(com, USART_WL_8BIT);
    usart_stop_bit_set(com, USART_STB_1BIT);
    usart_parity_config(com, USART_PM_NONE);
    usart_hardware_flow_rts_config(com, USART_RTS_DISABLE);
    usart_hardware_flow_cts_config(com, USART_CTS_DISABLE);
    usart_receive_config(com, USART_RECEIVE_ENABLE);
    usart_transmit_config(com, USART_TRANSMIT_ENABLE);
    usart_enable(com);
}