串口5和串口6一起用程序就会跑死，单独跑程序都没问题，看代码看不出问题，求助~~-JAMES的回答

5条回答

2019-07-21 06:22

[mw_shl_code=c,true]#include "uart5.h"
#include "stdarg.h"
#include "stdio.h"
#include "string.h"
#include "timer.h"

//′®¿ú·￠Ëí»o′æÇø
u8 USART5_TX_BUF[USART5_MAX_SEND_LEN]; //·￠Ëí»o3å,×î′óUSART3_MAX_SEND_LEN×Ö½ú

//′®¿ú½óêÕ»o′æÇø
u8 USART5_RX_BUF[USART5_MAX_RECV_LEN]; //½óêÕ»o3å,×î′óUSART3_MAX_RECV_LEN¸ö×Ö½ú.
//extern unsigned char gpsData[512];

//í¨1yÅD¶Ï½óêÕá¬Dø2¸ö×Ö·ûÖ®¼äμÄê±¼ä2î2»′óóú100msà′¾ö¶¨êÇ2»êÇò»′Îá¬DøμÄêy¾Y.
//èç1û2¸ö×Ö·û½óêÕ¼ä¸ô3¬1y100ms,ÔòèÏÎa2»êÇ1′Îá¬Døêy¾Y.ò2¾íêÇ3¬1y100msÃ»óD½óêÕμ½
//èÎoÎêy¾Y,Ôò±íê¾′Ë′Î½óêÕíê±Ï.
//½óêÕμ½μÄêy¾Y×′ì¬
//[15]:0,Ã»óD½óêÕμ½êy¾Y;1,½óêÕμ½áËò»Åúêy¾Y.
//[14:0]:½óêÕμ½μÄêy¾Y3¤¶è
u16 USART5_RX_STA=0;

void uart5_init(u32 bound)
{
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
// USART_ClockInitTypeDef USART_ClockInitStructure;
/* Enable the USARTx Interrupt */

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD|RCC_AHB1Periph_GPIOC,ENABLE); //ê1ÄüGPIODê±Öó
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5,ENABLE);//ê1ÄüUSART3ê±Öó

USART_DeInit(UART5);  //¸′Î»′®¿ú3

NVIC_InitStructure.NVIC_IRQChannel = UART5_IRQn;//GPS
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

GPIO_PinAFConfig(GPIOC, GPIO_PinSource12, GPIO_AF_UART5);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource2, GPIO_AF_UART5);

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_Init(GPIOC, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_Init(GPIOD, &GPIO_InitStructure);

USART_InitStructure.USART_BaudRate = bound;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
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(UART5, &USART_InitStructure);

/* Enable USART */
USART_ITConfig(UART5, USART_IT_RXNE, ENABLE);

USART_Cmd(UART5, ENABLE);

USART_ClearFlag(UART5, USART_FLAG_TC);
}

void UART5_IRQHandler(void)//GPS
{
u8 res;
if(USART_GetITStatus(UART5, USART_IT_RXNE) != RESET)//½óêÕμ½êy¾Y
{
res =USART_ReceiveData(UART5);
if((USART5_RX_STA&(1<<15))==0)//½óêÕíêμÄò»Åúêy¾Y,»1Ã»óD±»′|àí,Ôò2»Ôù½óêÕÆäËûêy¾Y
{
if(USART5_RX_STA<USART5_MAX_RECV_LEN) //»1¿éòÔ½óêÕêy¾Y
{
USART5_RX_BUF[USART5_RX_STA++]=res; //¼ÇÂ¼½óêÕμ½μÄÖμ
}
else
{
USART5_RX_STA|=1<<15; //Ç¿ÖÆ±ê¼Ç½óêÕíê3é
}
}
USART_ClearITPendingBit(UART5, USART_IT_RXNE);
}
}

int u5_receive_data(char* data)
{
unsigned short rxlen=0;
//data[0]=0;
if(USART5_RX_STA&0X8000)
{
rxlen=USART5_RX_STA&0X7FFF; //μÃμ½êy¾Y3¤¶è
USART5_RX_BUF[rxlen]=0;
memcpy(data,USART5_RX_BUF,strlen((char*)USART5_RX_BUF));
USART5_RX_STA=0;    //Æô¶ˉÏÂò»′Î½óêÕ

return rxlen;
}
return 0;
}

void u5_printf(char* fmt,...)
{
u16 i,j;
va_list ap;
va_start(ap,fmt);
vsprintf((char*)USART5_TX_BUF,fmt,ap);
va_end(ap);
i=strlen((const char*)USART5_TX_BUF);//′Ë′Î·￠Ëíêy¾YμÄ3¤¶è
for(j=0;j<i;j++)//Ñ-»··￠Ëíêy¾Y
{
   while(USART_GetFlagStatus(UART5,USART_FLAG_TC)==RESET);  //μè′yéÏ′Î′«êäíê3é
USART_SendData(UART5,(uint8_t)USART5_TX_BUF[j]);    //·￠Ëíêy¾Yμ½′®¿ú3
}
}

[/mw_shl_code]

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