有人用过gd32f107库中的串口0 、1、2的串口2吗？

只看该作者 · 2022-12-7 16:27

int main(void)
{
   uint16_t i;
led_init();
systick_config();
   nvic_irq_enable(USART0_IRQn, 0, 0);
   gd_eval_com_init(EVAL_COM0);
   gd_eval_com_init(EVAL_COM2);
   usart_interrupt_enable(USART0, USART_INT_RBNE);
while(1){}
}

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;
}
else if(EVAL_COM2 == com){
      com_id = 2U;
}

/* 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, 9600U);
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);
}

我串口0可以正常收发数据，但是用串口2没有反应