STM32F1_RTOS/Core/Src/usart.c

/**
  ******************************************************************************
  * @file    usart.c
  * @brief   This file provides code for the configuration
  *          of the USART instances.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2022 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under Ultimate Liberty license
  * SLA0044, the "License"; You may not use this file except in compliance with
  * the License. You may obtain a copy of the License at:
  *                             www.st.com/SLA0044
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "usart.h"

/* USER CODE BEGIN 0 */
#if EN_USART1_RX   //����ʹ���˽���
//����1�жϷ�������
//ע��,��ȡUSARTx->SR�ܱ���Ī�������Ĵ���   	
uint8_t USART_RX_BUF[USART_REC_LEN];     //���ջ���,����USART_REC_LEN���ֽ�.
//����״̬
//bit15��	�������ɱ�־
//bit14��	���յ�0x0d
//bit13~0��	���յ�����Ч�ֽ���Ŀ
uint16_t USART_RX_STA=0;       //����״̬����	

uint8_t aRxBuffer[RXBUFFERSIZE];//HAL��ʹ�õĴ��ڽ��ջ���
#endif

//�������´���,֧��printf����,������Ҫѡ��use MicroLIB	  
//#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)	
#include "stdio.h"	
#if  1
__asm (".global __use_no_semihosting\n\t");           
//��׼����Ҫ��֧�ֺ���                 
//struct __FILE 
//{ 
//	int handle; 
//}; 

FILE __stdout;       
//����_sys_exit()�Ա���ʹ�ð�����ģʽ    
void _sys_exit(int x) 
{ 
	x = x; 
} 
//�ض���fputc���� 
int fputc(int ch, FILE *f)
{
	USART1->SR;//��USARTx->SR�ܹ��������ֽڶ�ʧ������
	USART1->DR = (uint8_t) ch; 
	while((USART1->SR&0X40)==0);//ѭ������,ֱ����������  
	return 0;
}

/*********************USART Send one byte**********************/
void USART_SendByte( char Data)
{
	USART1->SR;//��USARTx->SR�ܹ��������ֽڶ�ʧ������
	USART1->DR = (uint8_t) Data; 
	while((USART1->SR&0X40)==0);//ѭ������,ֱ����������  
}
/*********************USART SendString**********************/
void USART_SendString(char *nbuff)
{
 while(*nbuff!='\0')
 {   
	USART_SendByte(*(nbuff++));
	while((USART1->SR&0X40)==0);//ѭ������,ֱ����������  
 }
}

#endif 
/* USER CODE END 0 */

UART_HandleTypeDef huart1;

/* USART1 init function */

void MX_USART1_UART_Init(void)
{

  /* USER CODE BEGIN USART1_Init 0 */

  /* USER CODE END USART1_Init 0 */

  /* USER CODE BEGIN USART1_Init 1 */

  /* USER CODE END USART1_Init 1 */
  huart1.Instance = USART1;
  huart1.Init.BaudRate = 115200;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN USART1_Init 2 */
	HAL_UART_Receive_IT(&huart1, (uint8_t *)aRxBuffer, RXBUFFERSIZE);//�ú����Ὺ�������жϣ���־λUART_IT_RXNE���������ý��ջ����Լ����ջ�����������������
  /* USER CODE END USART1_Init 2 */

}

void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(uartHandle->Instance==USART1)
  {
  /* USER CODE BEGIN USART1_MspInit 0 */

  /* USER CODE END USART1_MspInit 0 */
    /* USART1 clock enable */
    __HAL_RCC_USART1_CLK_ENABLE();

    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**USART1 GPIO Configuration
    PA9     ------> USART1_TX
    PA10     ------> USART1_RX
    */
    GPIO_InitStruct.Pin = GPIO_PIN_9;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_10;
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    /* USART1 interrupt Init */
    HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(USART1_IRQn);
  /* USER CODE BEGIN USART1_MspInit 1 */

  /* USER CODE END USART1_MspInit 1 */
  }
}

void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
{

  if(uartHandle->Instance==USART1)
  {
  /* USER CODE BEGIN USART1_MspDeInit 0 */

  /* USER CODE END USART1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_USART1_CLK_DISABLE();

    /**USART1 GPIO Configuration
    PA9     ------> USART1_TX
    PA10     ------> USART1_RX
    */
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10);

    /* USART1 interrupt Deinit */
    HAL_NVIC_DisableIRQ(USART1_IRQn);
  /* USER CODE BEGIN USART1_MspDeInit 1 */

  /* USER CODE END USART1_MspDeInit 1 */
  }
}

/* USER CODE BEGIN 1 */

#if HAL_USART_ISR_EN //�Ƿ�ʹ��HAL���Դ��Ĵ��ڽ����жϺ���
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
	if(huart->Instance==USART1)//�����Ǵ���1
	{
		if((USART_RX_STA&0x8000)==0)//�������
		{
			if(USART_RX_STA&0x4000)//���յ���0x0d
			{
				if(aRxBuffer[0]!=0x0a)USART_RX_STA=0;//���մ���,���¿�ʼ
				else USART_RX_STA|=0x8000;	//���������� 
			}
			else //��û�յ�0X0D
			{	
				if(aRxBuffer[0]==0x0d)USART_RX_STA|=0x4000;
				else
				{
					USART_RX_BUF[USART_RX_STA&0X3FFF]=aRxBuffer[0] ;
					USART_RX_STA++;
					if(USART_RX_STA>(USART_REC_LEN-1))USART_RX_STA=0;//�������ݴ���,���¿�ʼ����	  
				}		 
			}
		}

	}
}
 
//����1�жϷ�������
//ʹ�ô˺�����Ҫ����HAL���Դ����жϷ����Ӻ���stm32f1xx_it.c
void USART1_IRQHandler(void)                	
{ 
	uint32_t timeout=0;
	uint32_t maxDelay=0x1FFFF;
#if SYSTEM_SUPPORT_OS	 	//ʹ��OS
	OSIntEnter();    
#endif
	
	HAL_UART_IRQHandler(&huart1);	//����HAL���жϴ������ú���
	
	timeout=0;
    while (HAL_UART_GetState(&huart1) != HAL_UART_STATE_READY)//�ȴ�����
	{
	 timeout++;////��ʱ����
     if(timeout>maxDelay) break;		
	}
     
	timeout=0;
	while(HAL_UART_Receive_IT(&huart1, (uint8_t *)aRxBuffer, RXBUFFERSIZE) != HAL_OK)//һ�δ�������֮�������¿����жϲ�����RxXferCountΪ1
	{
	 timeout++; //��ʱ����
	 if(timeout>maxDelay) break;	
	}
#if SYSTEM_SUPPORT_OS	 	//ʹ��OS
	OSIntExit();  											 
#endif
} 
#else
/*������������ֱ�Ӱ��жϿ����߼�д���жϷ��������ڲ���
 ˵��������HAL�⴦���߼���Ч�ʲ��ߡ�
ʹ�ô˺�����Ҫ����HAL���Դ����жϷ����Ӻ���stm32f1xx_it.c
*/
//����1�жϷ�������
void USART1_IRQHandler(void)                	
{ 
	uint8_t Res;
#if SYSTEM_SUPPORT_OS	 	//ʹ��OS
	OSIntEnter();    
#endif
	if((__HAL_UART_GET_FLAG(&huart1,UART_FLAG_RXNE)!=RESET))  //�����ж�(���յ������ݱ�����0x0d 0x0a��β)
	{
    Res=USART1->DR; 
		if((USART_RX_STA&0x8000)==0)//�������
		{
			if(USART_RX_STA&0x4000)//���յ���0x0d
			{
				if(Res!=0x0a)USART_RX_STA=0;//���մ���,���¿�ʼ
				else USART_RX_STA|=0x8000;	//����������
			}
			else //��û�յ�0X0D
			{	
				if(Res==0x0d)USART_RX_STA|=0x4000;
				else
				{
					USART_RX_BUF[USART_RX_STA&0X3FFF]=Res ;
					USART_RX_STA++;
					if(USART_RX_STA>(USART_REC_LEN-1))USART_RX_STA=0;//�������ݴ���,���¿�ʼ����	  
				}		 
			}
		}
			
	}
	HAL_UART_IRQHandler(&huart1);	
#if SYSTEM_SUPPORT_OS	 	//ʹ��OS
	OSIntExit();  											 
#endif
} 
#endif
/* USER CODE END 1 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/