两台STM32F072 CAN通信接收不正常，但在ECANTOOL上接收正常

kinto

两台STM32F072 CAN通信接收不正常，但用ECANTOOL给两台同时发送数据，接收均正常。请大神帮忙，一般是什么问题？

ChenRyan

帮顶   

turelon

STM32 CAN有120Ω匹配电阻吗？

技艺电子

/*******************************************************************************
ÎļtÃû3Æ￡oCAN1_GPIO_Configuration(void)
oˉêyËμÃ÷￡oCAN1¶Ë¿úI/OÅäÖÃoˉêy
*******************************************************************************/
void CAN1_GPIO_Configuration(void)
{
        GPIO_InitTypeDef GPIO_InitStructure;
       
        RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA,ENABLE);
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG,ENABLE);       
        SYSCFG->CFGR1 |= SYSCFG_CFGR1_PA11_PA12_RMP;
       
        GPIO_PinAFConfig(GPIOA,GPIO_PinSource11,GPIO_AF_4);
  GPIO_PinAFConfig(GPIOA,GPIO_PinSource12,GPIO_AF_4);       
       
        GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_11;
  GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;       
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA,&GPIO_InitStructure);       

        GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_12;
  GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;       
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA,&GPIO_InitStructure);               
}

/*******************************************************************************
ÎļtÃû3Æ￡oCAN1_Parameter_Configuration(void)
oˉêyËμÃ÷￡oCAN12ÎêyÅäÖÃoˉêy
*******************************************************************************/
void CAN1_Parameter_Configuration(void)
{         
        CAN_InitTypeDef         CAN_InitStructure;       
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN,ENABLE);
        CAN_DeInit(CAN);CAN_StructInit(&CAN_InitStructure);
        CAN_InitStructure.CAN_NART = DISABLE;       
        CAN_InitStructure.CAN_TTCM = DISABLE;
        CAN_InitStructure.CAN_ABOM = DISABLE;
        CAN_InitStructure.CAN_AWUM = DISABLE;
        CAN_InitStructure.CAN_RFLM = DISABLE;
        CAN_InitStructure.CAN_TXFP = DISABLE;         
  CAN_InitStructure.CAN_BS1  = CAN_BS1_9tq;
  CAN_InitStructure.CAN_BS2  = CAN_BS2_2tq;
        CAN_InitStructure.CAN_Mode = CAN_Mode_Normal;               
  CAN_InitStructure.CAN_Prescaler = 16;
  CAN_Init(CAN,&CAN_InitStructure);       
}

/*******************************************************************************
ÎļtÃû3Æ￡oCAN1_Filter_Configuration(void)
oˉêyËμÃ÷￡oCAN1ÂË2¨ÅäÖÃoˉêy
*******************************************************************************/
void CAN1_Filter_Configuration(void)
{         
        CAN_FilterInitTypeDef  CAN_FilterInitStructure;
        CAN_FilterInitStructure.CAN_FilterNumber = 0;
  CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdMask;
  CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;
  CAN_FilterInitStructure.CAN_FilterIdLow  = 0x0000;       
  CAN_FilterInitStructure.CAN_FilterIdHigh = 0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdLow  = 0x0000;
  CAN_FilterInitStructure.CAN_FilterFIFOAssignment = CAN_Filter_FIFO0;
  CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;
  CAN_FilterInit(&CAN_FilterInitStructure);
}

/*******************************************************************************
ÎļtÃû3Æ￡oCAN1_NVIC_Configuration(void)
oˉêyËμÃ÷￡oCAN1ÖD¶Ï1üàíÅäÖÃ
*******************************************************************************/
void CAN1_NVIC_Configuration(void)
{
        NVIC_InitTypeDef NVIC_InitStructure;
        NVIC_InitStructure.NVIC_IRQChannel = CEC_CAN_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
        NVIC_Init(&NVIC_InitStructure);
        CAN_ITConfig(CAN,CAN_IT_FMP0,ENABLE);
        CAN_ITConfig(CAN,CAN_IT_FF0,ENABLE);
}

/*******************************************************************************
ÎļtÃû3Æ￡oCAN1_Peripheral_Initialization(void)
oˉêyËμÃ÷￡oCAN1íaéè3õê¼»ˉ
*******************************************************************************/
void CAN1_Peripheral_Initialization(void)
{
        //CAN1_NVIC_Configuration();
        CAN1_GPIO_Configuration();
        CAN1_Filter_Configuration();
        CAN1_Parameter_Configuration();
}

/*******************************************************************************
ÎļtÃû3Æ￡oCAN1_SendMessage(uint8_t*Message,uint8_t Length)
oˉêyËμÃ÷￡oCAN1Ïòía·￠ËíÏûÏ￠oˉêy
*******************************************************************************/
uint8_t CAN1_SendMessage(uint8_t*Message,uint8_t Length)
{
  uint8_t Box,i=0x00;
        CanTxMsg SendMessage;       
        SendMessage.DLC = Length;       
        SendMessage.IDE = CAN_ID_STD;
        SendMessage.RTR = CAN_RTR_DATA;
        SendMessage.StdId = 0x00000001;
        SendMessage.ExtId = 0x00000000;               
        for(i=0;i<Length;i++)
        SendMessage.Data[i] = Message[i];
        Box = CAN_Transmit(CAN,&SendMessage);
        while((CAN_TransmitStatus(CAN,Box)!=CAN_TxStatus_Ok)&&(i<0xf5))i++;
        if(i >= 0xf5)        return RESET;
        return 0;
}

技艺电子

技艺电子 发表于 2022-8-31 18:36
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能发送  接收有问题

天行者_2015

我的也是收不到数据，楼主有没解决问题？

yychun

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