IndoorEnvSystem/stm32/SYSTEM/usart/usart.c

#include "sys.h"
#include "usart.h"	  
////////////////////////////////////////////////////////////////////////////////// 	 
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD>ucos,<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
#if SYSTEM_SUPPORT_OS
#include "includes.h"					//ucos ʹ<EFBFBD><EFBFBD>	  
#endif
//////////////////////////////////////////////////////////////////////////////////	 
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><EFBFBD>ѧϰʹ<EFBFBD>ã<EFBFBD>δ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κ<EFBFBD><EFBFBD><EFBFBD>;
//ALIENTEK STM32<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>		   
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԭ<EFBFBD><EFBFBD>@ALIENTEK
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̳:www.openedv.com
//<EFBFBD>޸<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:2012/8/18
//<EFBFBD>汾<EFBFBD><EFBFBD>V1.5
//<EFBFBD><EFBFBD>Ȩ<EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ؾ<EFBFBD><EFBFBD><EFBFBD>
//Copyright(C) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿƼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>޹<EFBFBD>˾ 2009-2019
//All rights reserved
//********************************************************************************
//V1.3<EFBFBD>޸<EFBFBD>˵<EFBFBD><EFBFBD> 
//֧<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD>ͬƵ<EFBFBD><EFBFBD><EFBFBD>µĴ<EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˶<EFBFBD>printf<EFBFBD><EFBFBD>֧<EFBFBD><EFBFBD>
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˴<EFBFBD><EFBFBD>ڽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>printf<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD><EFBFBD>bug
//V1.4<EFBFBD>޸<EFBFBD>˵<EFBFBD><EFBFBD>
//1,<EFBFBD>޸Ĵ<EFBFBD><EFBFBD>ڳ<EFBFBD>ʼ<EFBFBD><EFBFBD>IO<EFBFBD><EFBFBD>bug
//2,<EFBFBD>޸<EFBFBD><EFBFBD><EFBFBD>USART_RX_STA,ʹ<EFBFBD>ô<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><EFBFBD><EFBFBD>Ϊ2<EFBFBD><EFBFBD>14<EFBFBD>η<EFBFBD>
//3,<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>USART_REC_LEN,<EFBFBD><EFBFBD><EFBFBD>ڶ<EFBFBD><EFBFBD>崮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>յ<EFBFBD><EFBFBD>ֽ<EFBFBD><EFBFBD><EFBFBD>(<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2<EFBFBD><EFBFBD>14<EFBFBD>η<EFBFBD>)
//4,<EFBFBD>޸<EFBFBD><EFBFBD><EFBFBD>EN_USART1_RX<EFBFBD><EFBFBD>ʹ<EFBFBD>ܷ<EFBFBD>ʽ
//V1.5<EFBFBD>޸<EFBFBD>˵<EFBFBD><EFBFBD>
//1,<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˶<EFBFBD>UCOSII<EFBFBD><EFBFBD>֧<EFBFBD><EFBFBD>
////////////////////////////////////////////////////////////////////////////////// 	  
 

//////////////////////////////////////////////////////////////////
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>´<EFBFBD><EFBFBD><EFBFBD>,֧<EFBFBD><EFBFBD>printf<EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫѡ<EFBFBD><EFBFBD>use MicroLIB	  
#if 1
#pragma import(__use_no_semihosting)             
//<EFBFBD><EFBFBD>׼<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>֧<EFBFBD>ֺ<EFBFBD><EFBFBD><EFBFBD>                 
struct __FILE 
{ 
	int handle; 

}; 

FILE __stdout;       
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>_sys_exit()<EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ð<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ    
_sys_exit(int x) 
{ 
	x = x; 
} 
//<EFBFBD>ض<EFBFBD><EFBFBD><EFBFBD>fputc<EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
int fputc(int ch, FILE *f)
{      
	while((USART1->SR&0X40)==0);//ѭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,ֱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>   
    USART1->DR = (u8) ch;      
	return ch;
}
#endif 


void UART1_SendString(char* s, int length)
{
	int i = 0;
	for(i = 0; i < length; i++){
		while(USART_GetFlagStatus(USART1, USART_FLAG_TC)==RESET); 
		USART_SendData(USART1 ,*(s + i));//<EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD>ǰ<EFBFBD>ַ<EFBFBD>
	}
}

 
 
#if EN_USART1_RX   //<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD>˽<EFBFBD><EFBFBD><EFBFBD>
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD>жϷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//ע<EFBFBD><EFBFBD>,<EFBFBD><EFBFBD>ȡUSARTx->SR<EFBFBD>ܱ<EFBFBD><EFBFBD><EFBFBD>Ī<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD>   	
u8 USART_RX_BUF[USART_REC_LEN];     //<EFBFBD><EFBFBD><EFBFBD>ջ<EFBFBD><EFBFBD><EFBFBD>,<EFBFBD><EFBFBD><EFBFBD><EFBFBD>USART_REC_LEN<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>.
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬
//bit15<EFBFBD><EFBFBD>	<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɱ<EFBFBD>־
//bit14<EFBFBD><EFBFBD>	<EFBFBD><EFBFBD><EFBFBD>յ<EFBFBD>0x0d
//bit13~0<EFBFBD><EFBFBD>	<EFBFBD><EFBFBD><EFBFBD>յ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD>ֽ<EFBFBD><EFBFBD><EFBFBD>Ŀ
u16 USART_RX_STA=0;       //<EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬<EFBFBD><EFBFBD><EFBFBD><EFBFBD>	  
  
void uart_init(u32 bound){
  //GPIO<EFBFBD>˿<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	 
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA, ENABLE);	//ʹ<EFBFBD><EFBFBD>USART1<EFBFBD><EFBFBD>GPIOAʱ<EFBFBD><EFBFBD>
  
	//USART1_TX   GPIOA.9
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //PA.9
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;	//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  GPIO_Init(GPIOA, &GPIO_InitStructure);//<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>GPIOA.9
   
  //USART1_RX	  GPIOA.10<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;//PA10
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  GPIO_Init(GPIOA, &GPIO_InitStructure);//<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>GPIOA.10  

  //Usart1 NVIC <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//<EFBFBD><EFBFBD>ռ<EFBFBD><EFBFBD><EFBFBD>ȼ<EFBFBD>3
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;		//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȼ<EFBFBD>3
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;			//IRQͨ<EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD>
	NVIC_Init(&NVIC_InitStructure);	//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>VIC<EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD>
  
   //USART <EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

	USART_InitStructure.USART_BaudRate = bound;//<EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;//<EFBFBD>ֳ<EFBFBD>Ϊ8λ<EFBFBD><EFBFBD><EFBFBD>ݸ<EFBFBD>ʽ
	USART_InitStructure.USART_StopBits = USART_StopBits_1;//һ<EFBFBD><EFBFBD>ֹͣλ
	USART_InitStructure.USART_Parity = USART_Parity_No;//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>żУ<EFBFBD><EFBFBD>λ
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//<EFBFBD><EFBFBD>Ӳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;	//<EFBFBD>շ<EFBFBD>ģʽ

  USART_Init(USART1, &USART_InitStructure); //<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1
  USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>
  USART_Cmd(USART1, ENABLE);                    //ʹ<EFBFBD>ܴ<EFBFBD><EFBFBD><EFBFBD>1 

}

void USART1_IRQHandler(void)                	//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD>жϷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	{
	u8 Res;
#if SYSTEM_SUPPORT_OS 		//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>SYSTEM_SUPPORT_OSΪ<EFBFBD>棬<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ֧<EFBFBD><EFBFBD>OS.
	OSIntEnter();    
#endif
	if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)  //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>(<EFBFBD><EFBFBD><EFBFBD>յ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>0x0d 0x0a<EFBFBD><EFBFBD>β)
		{
		Res =USART_ReceiveData(USART1);	//<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>յ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		
		if((USART_RX_STA&0x8000)==0)//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
			{
			if(USART_RX_STA&0x4000)//<EFBFBD><EFBFBD><EFBFBD>յ<EFBFBD><EFBFBD><EFBFBD>0x0d
				{
				if(Res!=0x0a)USART_RX_STA=0;//<EFBFBD><EFBFBD><EFBFBD>մ<EFBFBD><EFBFBD><EFBFBD>,<EFBFBD><EFBFBD><EFBFBD>¿<EFBFBD>ʼ
				else USART_RX_STA|=0x8000;	//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
				}
			else //<EFBFBD><EFBFBD>û<EFBFBD>յ<EFBFBD>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;//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD><EFBFBD><EFBFBD>,<EFBFBD><EFBFBD><EFBFBD>¿<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>	  
					}		 
				}
			}   		 
     } 
#if SYSTEM_SUPPORT_OS 	//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>SYSTEM_SUPPORT_OSΪ<EFBFBD>棬<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ֧<EFBFBD><EFBFBD>OS.
	OSIntExit();  											 
#endif
} 
#endif