CAN-USB分析仪设置问题 CAN总线波特率和串口波特率要一致吗

wangkun123 · 发表于 2016-8-1 22:36:45

  用原子哥的程序这样设置上位机接收不到数据啊
#include "stm32f10x.h"
#include "delay.h"
#include "sys.h"
#include "usart.h"
#include "can.h"

/************************************************
ALIENTEKÕ½½￠STM32¿a·￠°åêμÑé26
CANí¨DÅêμÑé
¼¼êõÖ§3Ö￡owww.openedv.com
ìÔ±|μêÆì￡ohttp://eboard.taobao.com
1Ø×￠Î￠DÅ1«ÖúÆ½ì¨Î￠DÅoÅ￡o"ÕyμãÔ-×ó"￡¬Ãa·Ñ»ñè¡STM32×êáÏ¡￡
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************************************************/

int main(void)
{
u8 i=0;
u8 cnt=0;
u8 canbuf[8];
u8 canbuf1[8];
u8 res,key;
u8 mode=CAN_Mode_LoopBack;//CAN1¤×÷Ä￡ê½;CAN_Mode_Normal(0)￡oÆÕí¨Ä￡ê½￡¬CAN_Mode_LoopBack(1)￡o»·»ØÄ￡ê½

delay_init();            //Ñóê±oˉêy3õê¼»ˉ
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//éèÖÃÖD¶ÏóÅÏè¼¶·Ö×éÎa×é2￡o2Î»ÇàÕ¼óÅÏè¼¶￡¬2Î»Ïìó|óÅÏè¼¶
uart_init(115200);      //′®¿ú3õê¼»ˉÎa115200

CAN_Mode_Init(CAN_SJW_1tq,CAN_BS2_8tq,CAN_BS1_9tq,4,CAN_Mode_Normal);//CAN3õê¼»ˉ»·»ØÄ￡ê½,2¨ìØÂê500Kbps

while(1)
{

for(i=0;i<8;i++)
{
canbuf=cnt+i;//ìî3ä·￠Ëí»o3åÇø

}
res=Can_Send_Msg(canbuf,8);//·￠Ëí8¸ö×Ö½ú
if(res)
printf("send failed\r\n");
else
printf("OK\r\n");
//ìáê¾·￠Ëí3é1|
key=Can_Receive_Msg(canbuf1);
if(key)//½óêÕμ½óDêy¾Y
{

for(i=0;i<key;i++)
{
printf("canbuf1[%d]=%d\r\n",i,canbuf1);
}
}
delay_ms(100);
}
}

//CAN源文件
#include "can.h"
#include "led.h"
#include "delay.h"
#include "usart.h"
//////////////////////////////////////////////////////////////////////////////////
//±¾3ìDòÖ»1©Ñ§Ï°ê1óÃ￡¬Î′¾-×÷ÕßDí¿é￡¬2»μÃóÃóúÆäËüèÎoÎóÃí¾
//ALIENTEKÕ½½￠STM32¿a·￠°å
//CANÇy¶ˉ ′úÂë
//ÕyμãÔ-×ó@ALIENTEK
//¼¼êõÂÛì3:www.openedv.com
//′′½¨èÕÆú:2014/5/7
//°æ±¾￡oV1.1
//°æè¨ËùóD￡¬μá°æ±Ø¾¿¡￡
//Copyright(C) 1ãÖYêDDÇòíμç×ó¿Æ¼¼óDÏT1«Ë¾ 2014-2024
//All rights reserved
//********************************************************************************
//V1.1DT¸ÄËμÃ÷ 20150528
//DTÕyáËCAN3õê¼»ˉoˉêyμÄÏà1Ø×￠êí￡¬¸üÕyáË2¨ìØÂê¼ÆËã1«ê½
//////////////////////////////////////////////////////////////////////////////////

//CAN3õê¼»ˉ
//tsjw:ÖØDÂí¬2½ìøÔ¾ê±¼äμ￥Ôa.·¶Î§:CAN_SJW_1tq~ CAN_SJW_4tq
//tbs2:ê±¼ä¶Î2μÄê±¼äμ￥Ôa. ·¶Î§:CAN_BS2_1tq~CAN_BS2_8tq;
//tbs1:ê±¼ä¶Î1μÄê±¼äμ￥Ôa. ·¶Î§:CAN_BS1_1tq ~CAN_BS1_16tq
//brp :2¨ìØÂê·ÖÆμÆ÷.·¶Î§:1~1024;  tq=(brp)*tpclk1
//2¨ìØÂê=Fpclk1/((tbs1+1+tbs2+1+1)*brp);
//mode:CAN_Mode_Normal,ÆÕí¨Ä￡ê½;CAN_Mode_LoopBack,»Ø»·Ä￡ê½;
//Fpclk1μÄê±ÖóÔú3õê¼»ˉμÄê±oòéèÖÃÎa36M,èç1ûéèÖÃCAN_Mode_Init(CAN_SJW_1tq,CAN_BS2_8tq,CAN_BS1_9tq,4,CAN_Mode_LoopBack);
//Ôò2¨ìØÂêÎa:36M/((8+9+1)*4)=500Kbps
//·μ»ØÖμ:0,3õê¼»ˉOK;
// ÆäËû,3õê¼»ˉê§°ü;
u8 CAN_Mode_Init(u8 tsjw,u8 tbs2,u8 tbs1,u16 brp,u8 mode)
{
GPIO_InitTypeDef GPIO_InitStructure;
CAN_InitTypeDef         CAN_InitStructure;
CAN_FilterInitTypeDef    CAN_FilterInitStructure;
#if CAN_RX0_INT_ENABLE
NVIC_InitTypeDef    NVIC_InitStructure;
#endif

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);//ê1ÄüPORTAê±Öó

RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);//ê1ÄüCAN1ê±Öó

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //¸′óÃíÆíì
GPIO_Init(GPIOA, &GPIO_InitStructure); //3õê¼»ˉIO

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //éÏà-êäèë
GPIO_Init(GPIOA, &GPIO_InitStructure); //3õê¼»ˉIO

//CANμ￥ÔaéèÖÃ
CAN_InitStructure.CAN_TTCM=DISABLE; //·Çê±¼ä′￥·￠í¨DÅÄ￡ê½
CAN_InitStructure.CAN_ABOM=DISABLE; //èí¼t×Ô¶ˉàëÏß1üàí
CAN_InitStructure.CAN_AWUM=DISABLE; //ËˉÃßÄ￡ê½í¨1yèí¼t»½DÑ(Çå3yCAN->MCRμÄSLEEPÎ»)
CAN_InitStructure.CAN_NART=ENABLE; //½ûÖ1±¨ÎÄ×Ô¶ˉ′«Ëí
CAN_InitStructure.CAN_RFLM=DISABLE;      //±¨ÎÄ2»Ëø¶¨,DÂμÄ¸2¸Ç¾éμÄ
CAN_InitStructure.CAN_TXFP=DISABLE; //óÅÏè¼¶óé±¨ÎÄ±êê¶·û¾ö¶¨
CAN_InitStructure.CAN_Mode= mode;          //Ä￡ê½éèÖÃ￡o mode:0,ÆÕí¨Ä￡ê½;1,»Ø»·Ä￡ê½;
//éèÖÃ2¨ìØÂê
CAN_InitStructure.CAN_SJW=tsjw; //ÖØDÂí¬2½ìøÔ¾¿í¶è(Tsjw)Îatsjw+1¸öê±¼äμ￥Î»  CAN_SJW_1tq    CAN_SJW_2tq CAN_SJW_3tq CAN_SJW_4tq
CAN_InitStructure.CAN_BS1=tbs1; //Tbs1=tbs1+1¸öê±¼äμ￥Î»CAN_BS1_1tq ~CAN_BS1_16tq
CAN_InitStructure.CAN_BS2=tbs2; //Tbs2=tbs2+1¸öê±¼äμ￥Î»CAN_BS2_1tq ~ CAN_BS2_8tq
CAN_InitStructure.CAN_Prescaler=brp;       //·ÖÆμÏμêy(Fdiv)Îabrp+1
CAN_Init(CAN1, &CAN_InitStructure);         //3õê¼»ˉCAN1

CAN_FilterInitStructure.CAN_FilterNumber=0; //1yÂËÆ÷0
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask; //Æá±ÎÎ»Ä￡ê½
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit; //32Î»¿í
CAN_FilterInitStructure.CAN_FilterIdHigh=0x0000; //32Î»ID
CAN_FilterInitStructure.CAN_FilterIdLow=0x0000;
CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x0000;//32Î»MASK
CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000;
CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_Filter_FIFO0;//1yÂËÆ÷01Øáaμ½FIFO0
CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;//¼¤»î1yÂËÆ÷0

CAN_FilterInit(&CAN_FilterInitStructure); //ÂË2¨Æ÷3õê¼»ˉ

#if CAN_RX0_INT_ENABLE
CAN_ITConfig(CAN1,CAN_IT_FMP0,ENABLE); //FIFO0ÏûÏ￠1òoÅÖD¶ÏÔêDí.

NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN1_RX0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;    // Ö÷óÅÏè¼¶Îa1
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;          // ′ÎóÅÏè¼¶Îa0
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
#endif
return 0;
}

#if CAN_RX0_INT_ENABLE //ê1ÄüRX0ÖD¶Ï
//ÖD¶Ï·tÎñoˉêy
void USB_LP_CAN1_RX0_IRQHandler(void)
{
    CanRxMsg RxMessage;
int i=0;
CAN_Receive(CAN1, 0, &RxMessage);
for(i=0;i<8;i++)
printf("rxbuf[%d]:%d\r\n",i,RxMessage.Data);
}
#endif

//can·￠Ëíò»×éêy¾Y(1ì¶¨¸ñê½:IDÎa0X12,±ê×¼Ö¡,êy¾YÖ¡)
//len:êy¾Y3¤¶è(×î′óÎa8)
//msg:êy¾YÖ¸Õë,×î′óÎa8¸ö×Ö½ú.
//·μ»ØÖμ:0,3é1|;
//    ÆäËû,ê§°ü;
u8 Can_Send_Msg(u8* msg,u8 len)
{
u8 mbox;
u16 i=0;
CanTxMsg TxMessage;
TxMessage.StdId=0x12; // ±ê×¼±êê¶·û
TxMessage.ExtId=0x12; // éèÖÃà©Õ1±êê¾·û
TxMessage.IDE=CAN_Id_Standard; // ±ê×¼Ö¡
TxMessage.RTR=CAN_RTR_Data; // êy¾YÖ¡
TxMessage.DLC=len; // òa·￠ËíμÄêy¾Y3¤¶è
for(i=0;i<len;i++)
TxMessage.Data=msg;
mbox= CAN_Transmit(CAN1, &TxMessage);
i=0;
while((CAN_TransmitStatus(CAN1, mbox)==CAN_TxStatus_Failed)&&(i<0XFFF))i++; //μè′y·￠Ëí½áêø
if(i>=0XFFF)return 1;
return 0;
}
//can¿ú½óêÕêy¾Y2éÑˉ
//buf:êy¾Y»o′æÇø;
//·μ»ØÖμ:0,ÎTêy¾Y±»êÕμ½;
//    ÆäËû,½óêÕμÄêy¾Y3¤¶è;
u8 Can_Receive_Msg(u8 *buf)
{
u32 i;
CanRxMsg RxMessage;
if( CAN_MessagePending(CAN1,CAN_FIFO0)==0)return 0; //Ã»óD½óêÕμ½êy¾Y,Ö±½óíË3ö
CAN_Receive(CAN1, CAN_FIFO0, &RxMessage);//¶áè¡êy¾Y
for(i=0;i<8;i++)
buf=RxMessage.Data;
return RxMessage.DLC;
}