GD32E230F4P6串口发送中断进几次不能进入了

只看该作者 · 2025-6-17 09:56

void USART0_Init(void)
{
rcu_periph_clock_enable(RCU_USART0);

/* configure USART Tx as alternate function push-pull */
gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_9);
gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_9);

/* configure USART Rx as alternate function push-pull */
gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_10);
gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_10);
// PA10 - USART_RX (浮空输入)
//gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_10);
/* connect port to USARTx_Tx */
gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_9);

/* connect port to USARTx_Rx */
gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_10);
usart_deinit(USART0);
usart_baudrate_set(USART0, 115200U);
usart_word_length_set(USART0, USART_WL_8BIT); // 8位数据
usart_stop_bit_set(USART0, USART_STB_1BIT); // 1位停止位
usart_parity_config(USART0, USART_PM_NONE); // 无校验
usart_receive_config(USART0, USART_RECEIVE_ENABLE);
usart_transmit_config(USART0, USART_TRANSMIT_ENABLE);

usart_interrupt_enable(USART0, USART_INT_RBNE); // 使能USART0接收中断
nvic_irq_enable(USART0_IRQn, 0);
usart_enable(USART0);
}
void USART0_IRQHandler(void)
{
uint8_t ucChar;

// 检查是否是接收中断
if(usart_interrupt_flag_get(USART0, USART_INT_FLAG_RBNE) != RESET)
{
// 读取接收到的数据
ucChar = usart_data_receive(USART0);

ms_comm.start_end = (ms_comm.start_end << 8) | ucChar;

if (ms_comm.start_end == MasterStartRx)
{
ms_comm.rx_start_ok = 1;
ms_comm.rx_index = 4;
ms_comm.rx_len = 12;
}
else if (ms_comm.rx_start_ok == 1)
{
ms_comm.rx[ms_comm.rx_index] = ucChar;
ms_comm.rx_index++;

if (MsStartEnd16_t[0] == MsEnd)
{
if (ms_comm.rx_index == ms_comm.rx_len)
{
ms_comm.rx_start_ok = 0;
Ms_Decode();
}
}
if (ms_comm.rx_index >= sizeof (ms_cmd_t))
ms_comm.rx_index = 4;
}

//usart_interrupt_flag_clear(USART0,USART_INT_FLAG_RBNE);
}

// 检查是否是发送中断（如果启用了发送中断）
if (usart_interrupt_flag_get(USART0, USART_INT_FLAG_TC) != RESET)
{

if (ms_comm.tx_index < ms_comm.tx_len)
{
// Ms_SendByte(MsTxBuf[ms_comm.TxIndex++]);
usart_data_transmit(USART0, MsTxBuf[ms_comm.tx_index++]);
}
else
{
Clr_Ms_INT_TC;//关闭中断
ms_comm.tx_len = 0;
ms_comm.wait_time = 10;
// LCDm_CTL_L;
}

}

}