配置gd32串口的代码，支持中断发送和接收

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hua_ren|

楼主 | 2020-12-22 11:26 | 只看该作者回帖奖励

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串口, 代码, USART, SAR, usart2

void Uart2_init(void)
{ /* enable GPIO clock */
rcu_periph_clock_enable(RCU_GPIOB);

/* enable USART clock */
rcu_periph_clock_enable(RCU_USART2);

      /* connect port to USARTx_Tx */
gpio_init(GPIOB, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_10);

/* connect port to USARTx_Rx */
gpio_init(GPIOB, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, GPIO_PIN_11);

usart_deinit(USART2);
usart_baudrate_set(USART2, 9600U);
usart_word_length_set(USART2, USART_WL_8BIT);
usart_stop_bit_set(USART2, USART_STB_1BIT);
usart_parity_config(USART2, USART_PM_NONE);
usart_hardware_flow_rts_config(USART2, USART_RTS_DISABLE);
usart_hardware_flow_cts_config(USART2, USART_CTS_DISABLE);
usart_receive_config(USART2, USART_RECEIVE_ENABLE);
usart_transmit_config(USART2, USART_TRANSMIT_ENABLE);

      nvic_irq_enable(USART2_IRQn, 10, 0);
/* configure COM2 */

usart_interrupt_enable(USART2, USART_INT_TBE);
usart_interrupt_enable(USART2, USART_INT_RBNE);

usart_receiver_timeout_enable(USART2);
usart_receiver_timeout_threshold_config(USART2, 10);

// usart_interrupt_enable(USART2, USART_INT_IDLE);
// /* wait until USART send the transmitter_buffer */
// while(txcount < tx_size);
//
// while(RESET == usart_flag_get(USART0, USART_FLAG_TC));

usart_enable(USART2);

}

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