stm32串口接收发送数据处理

最新推荐文章于 2025-04-20 16:19:01 发布

转载最新推荐文章于 2025-04-20 16:19:01 发布 · 429 阅读

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/fengbaobao/p/10684255.html

本文详细介绍了UART通信协议中的一种特定握手方式，通过状态机解析接收到的数据，并根据不同的状态进行相应的响应。文章深入分析了从开始字符到结束字符的整个接收过程，以及如何根据接收到的数据调整LED状态。

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/************************************************************
* Function Name : Uart1_Send_Byte
* Description : ´®¿Ú1·¢ËÍ×Ö½ÚÊý¾Ý
* Input : ·¢ËÍ×Ö½Ú
* Return : ÎÞ
*************************************************************/
void Uart1_Send_Byte(u8 Data)
{
USART_SendData(USART1,(u8)Data);
while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET);
}

/************************************************************
* Function Name : USART1_IRQHandler
* Description : ´®¿Ú1½ÓÊÕÖÐ¶Ï
* Input : ·¢ËÍ×Ö½Ú
* Return : ÎÞ
*************************************************************/
void USART1_IRQHandler(void) //´®¿Ú1ÖÐ¶Ï·þÎñ³ÌÐò
{
int Data;

if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) //½ÓÊÕÖÐ¶Ï
{

Data =USART_ReceiveData(USART1); //¶ÁÈ¡½ÓÊÕµ½µÄÊý¾Ý
switch(ReceiveState)
{
case RecSta1:
if(Data == 0xFE)
{
ReceiveState = RecSta2;
}
else
{
ReceiveState = RecSta1;
}
break;

case RecSta2:
if(Data == 0xEF)
{
ReceiveState = RecSta3;
}
else
{
ReceiveState = RecSta1;
}
break;

case RecSta3:
if(Data == 0x7F)
{
ReceiveState = RecSta5;
}
else if(Data == 0x02)
{
ReceiveState = RecSta6;
}
else
{
LedChannel = Data;
ReceiveState = RecSta4;
}
break;

case RecSta4:
ReceiveFlag = 1;
LedState = Data;
ReceiveState = RecSta1;
break;

case RecSta5:
if(Data == 0x8F)
{
Uart1_Send_Byte(0xFE);
Uart1_Send_Byte(0xEF);
Uart1_Send_Byte(0x7F);
Uart1_Send_Byte(0x68);

}
else if(Data == 0xF8)
{
Uart1_Send_Byte(0x04);
Uart1_Send_Byte(0x09);
Uart1_Send_Byte(0xB1);
Uart1_Send_Byte(0x03);
}
ReceiveState = RecSta1;
break;

case RecSta6 :
if(Data == 0x02)
{
LedInitial(1);
flag=1;
ReceiveState = RecSta1;
}
break ;

default:
ReceiveState = RecSta1;
break;
}

}
X86_ControlLed(); //X86µãµÆ
}

转载于:https://www.cnblogs.com/fengbaobao/p/10684255.html