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和上位机通信，大约5分钟左右的时候，串口开始拒绝接收数据，在网上查了参考如下：
http://bbs.21ic.com/forum.php?mo ... E6%9C%BA&page=1
http://blog.csdn.net/huwen415/article/details/8928032
http://bbs.21ic.com/forum.php?mo ... amp;authorid=527638
但是问题依然没有解决，求助！！！！！！！！！！！！！！！！！！！！！！！！！！
串口1的设置如下：
void uart1_init(u32 bound){
//GPIO¶Ë¿úéèÖÃ
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA, ENABLE); //ê1ÄüUSART1￡¬GPIOAê±Öó
USART_DeInit(USART1); //¸′λ′®¿ú1
//USART1_TX PA.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; //¸′óÃíÆíìêä3ö
GPIO_Init(GPIOA, &GPIO_InitStructure); //3õê¼»ˉPA9
//USART1_RX PA.10
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//¸¡¿Õêäèë
GPIO_Init(GPIOA, &GPIO_InitStructure); //3õê¼»ˉPA10
//Usart1 NVIC ÅäÖÃ
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0 ;//ÇàÕ¼óÅÏ輶0
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //×óóÅÏ輶0
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQí¨μàê1Äü
NVIC_Init(&NVIC_InitStructure); //¸ù¾YÖ¸¶¨μÄ2Îêy3õê¼»ˉVIC¼Ä′æÆ÷
//USART 3õê¼»ˉéèÖÃ
USART_InitStructure.USART_BaudRate = bound;//ò»°ãéèÖÃÎa9600;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//×Ö3¤Îa8λêy¾Y¸ñê½
USART_InitStructure.USART_StopBits = USART_StopBits_1;//ò»¸öí￡Ö1λ
USART_InitStructure.USART_Parity = USART_Parity_No;//ÎTÆæżD￡Ñéλ
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//ÎTó2¼têy¾Yá÷¿ØÖÆ
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //êÕ·￠Ä￡ê½
USART_Init(USART1, &USART_InitStructure); //3õê¼»ˉ′®¿ú
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //¿aÆôÖD¶Ï
USART_ITConfig(USART1, USART_IT_PE, ENABLE);
USART_ITConfig(USART1, USART_IT_ERR, ENABLE);
USART_Cmd(USART1, ENABLE); //ê1Äü′®¿ú
}
中断处理函数如下：
void USART1_IRQHandler(void) //′®¿ú1ÖD¶Ï·tÎñ3ìDò
{
u8 Res;//Data_BuffÎaêy¾Y»o3å
u32 my_delay;
my_delay=0;
if(USART_GetFlagStatus(USART1, USART_FLAG_ORE) != RESET) //1yÔØ3ö′í(Overrun error)￡¬μ±RXNEÎa1μÄê±oòμÄ
{
Res =USART_ReceiveData(USART1); //μ±½óêü′íÎóμÄê±oò￡¬ò2½óêÕ￡¬Ôù·￠¸øéÏλ»ú￡¬éÏλ»úÅD¶Ïèç1û′íÎóÔòÖØ·￠
data_buffer[NumSize]=Res;
NumSize++;
if(NumSize>6)
{
NumSize=0;
state=1;
while(my_delay < 144000){my_delay++;}
}
USART_ClearFlag(USART1, USART_FLAG_ORE);
}
if(USART_GetFlagStatus(USART1, USART_FLAG_NE) != RESET) //Ôëéù′íÎó±êÖ¾ (Noise error flag)
{
USART_ClearFlag(USART1, USART_FLAG_NE);
}
if(USART_GetFlagStatus(USART1, USART_FLAG_FE) != RESET) // Ö¡′íÎó (Framing error)
{
USART_ClearFlag(USART1, USART_FLAG_FE);
}
if(USART_GetFlagStatus(USART1, USART_FLAG_PE) != RESET) //¼ìÑé′íÎó (Parity error)
{
USART_ClearFlag(USART1, USART_FLAG_PE);
}
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) //¶á¼Ä′æÆ÷·Ç¿Õ (Read data register not empty)
{
Res =USART_ReceiveData(USART1);
data_buffer[NumSize]=Res;
NumSize++;
if(NumSize>6)
{
NumSize=0;
state=1;
while(my_delay < 144000){my_delay++;}
}
USART_ClearITPendingBit(USART1,USART_IT_RXNE);
}
}
发送数据函数如下：
void send_data(USART_TypeDef* USARTx,u8 (*p))
{
u8 i;
for(i=0;i<7;i++)
{
USART_SendData(USARTx, *p);
while(USART_GetFlagStatus(USARTx,USART_FLAG_TC)!=SET);
p++;
}
}
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发表于 2015-12-29 11:36:09
楼主
C9 ÖD¶ÏÏßòÔ¼°ÖD¶Ï3õê¼»ˉÅäÖÃ￡¬Ï½μÑØ′￥·￠
