[经验]

【CW32饭盒派开发板试用体验】-05-定时器+串口3定时发送

2023-5-10 22:52:55

283

今天晚上来搞一下串口，由于回来比较晚，所以今天的分享些简单点，孩子睡觉了，也不敢打字太多，串口是设置的串口3，和STM32的有所不同，串口1 在PA8和PA9上，而PA9和PA10是串口3，底板上PA8是LED的，所以我打算使用PA9和PA10（串口3）来做测试，

直接还是不多说，直接上代码，

#include "DRV_UART.h"

void UART_Init(void)
{

  GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;
	
  RCC_APBPeriphClk_Enable1(RCC_APB1_PERIPH_UART3, ENABLE);
	 RCC_AHBPeriphClk_Enable( RCC_AHB_PERIPH_GPIOA, ENABLE);  

	  PA09_AFx_UART1RXD();
	  PA09_AFx_UART1RXD(); 
	
	PA09_AFx_UART3TXD();
	PA10_AFx_UART3RXD()  ;
	
  GPIO_InitStructure.Pins = GPIO_PIN_9; //PA9
  GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
  GPIO_Init(CW_GPIOA, &GPIO_InitStructure);
    
  GPIO_InitStructure.Pins = GPIO_PIN_10; //PA10
  GPIO_InitStructure.Mode = GPIO_MODE_INPUT_PULLUP;
  GPIO_Init(CW_GPIOA, &GPIO_InitStructure);
	
  USART_InitStructure.USART_BaudRate = 115200;
  USART_InitStructure.USART_Over = USART_Over_16;
  USART_InitStructure.USART_Source = USART_Source_PCLK;
  USART_InitStructure.USART_UclkFreq = 64000000;
  USART_InitStructure.USART_StartBit = USART_StartBit_FE;
  USART_InitStructure.USART_StopBits = USART_StopBits_1;
  USART_InitStructure.USART_Parity = USART_Parity_No ;
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
  USART_Init(CW_UART3, &USART_InitStructure); 
	
	
	//使能UARTx RC中断
	//  USART_ITConfig(CW_UART1, USART_IT_RC, ENABLE);
	//优先级，无优先级分组
	//  NVIC_SetPriority(UART1_IRQn, 0);
	//  //UARTx中断使能
	//  NVIC_EnableIRQ(UART1_IRQn);
}




void Uart_TestDemo(void)
{
	unsigned char t=0;
		unsigned char dat[30]={"This is CW32 UART3 Demo\r\n"};
				for(t=0;t<30;t++)
			  {
						USART_SendData(CW_UART3,dat[t]);										
						while(USART_GetFlagStatus(CW_UART3,USART_FLAG_TXE)==RESET);
						USART_ClearFlag(CW_UART3,USART_FLAG_TXE);			
			  }		

}