STM32F105 can1能接收无法发送，CAN2收发正常

只看该作者 · 2012-10-17 10:40

原来使用的是103VE，目前有客户需要双CAN，故直接在原有的板子上换成105VC的片子来调试，目前CAN1无法发送，接收正常，CAN2收发正常；不知道是哪里出了问题，用原来103VE的程序（使用105VC的芯片）CAN1收发正常。

只看该作者 · 2012-10-17 10:43

这是初始化部分：

void CAN_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  CAN_InitTypeDef       CAN_InitStructure;
  CAN_FilterInitTypeDef  CAN_FilterInitStructure;
  //CanTxMsg TxMessage;
  RCC_ClocksTypeDef RCC_ClocksStatus;

/* if(ACC_BIT) //ACC关时，不打开CAN功能
  {
    return;
  }*/

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  //Configure CAN pin: TX
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);

RCC_GetClocksFreq(&RCC_ClocksStatus);
CAN_DeInit(CAN1);
  CAN_StructInit(&CAN_InitStructure);
// CAN cell init
  CAN_InitStructure.CAN_TTCM=DISABLE;
  CAN_InitStructure.CAN_ABOM=DISABLE;
  CAN_InitStructure.CAN_AWUM=DISABLE;
  CAN_InitStructure.CAN_NART=DISABLE;
  CAN_InitStructure.CAN_RFLM=DISABLE;
  CAN_InitStructure.CAN_TXFP=DISABLE;
  CAN_InitStructure.CAN_Mode=CAN_Mode_Normal;
  CAN_InitStructure.CAN_SJW=CAN_SJW_1tq;
CAN_InitStructure.CAN_BS1=CAN_BS1_13tq;
CAN_InitStructure.CAN_BS2=CAN_BS2_2tq;
CAN_InitStructure.CAN_Prescaler=RCC_ClocksStatus.PCLK1_Frequency/(16*250000);    //波特率计算，16M/（1+8+7）/4=250k

  CAN_Init(CAN1, &CAN_InitStructure)；
  //CAN filter init
  CAN_FilterInitStructure.CAN_FilterNumber=0;
  CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;
  CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;
  CAN_FilterInitStructure.CAN_FilterIdHigh=0x0000;
  CAN_FilterInitStructure.CAN_FilterIdLow=0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000;
  CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_FIFO0;
  CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;
  CAN_FilterInit(&CAN_FilterInitStructure);
  CAN_ITConfig(CAN1, CAN_IT_FMP0, ENABLE);
#ifdef DOUBLE_CAN_FUNC

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  //Configure CAN pin: TX
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  /* CAN register init */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN2, ENABLE);


  CAN_DeInit(CAN2);
  CAN_StructInit(&CAN_InitStructure);
  CAN_InitStructure.CAN_TTCM=DISABLE;
  CAN_InitStructure.CAN_ABOM=DISABLE;
  CAN_InitStructure.CAN_AWUM=DISABLE;
  CAN_InitStructure.CAN_NART=DISABLE;
  CAN_InitStructure.CAN_RFLM=DISABLE;
  CAN_InitStructure.CAN_TXFP=DISABLE;
  CAN_InitStructure.CAN_Mode=CAN_Mode_Normal;
  CAN_InitStructure.CAN_SJW=CAN_SJW_1tq;
CAN_InitStructure.CAN_BS1=CAN_BS1_13tq;
CAN_InitStructure.CAN_BS2=CAN_BS2_2tq;
CAN_InitStructure.CAN_Prescaler=RCC_ClocksStatus.PCLK1_Frequency/(16*250000);    //波特率计算，16M/（1+8+7）/4=250k
  CAN_Init(CAN2, &CAN_InitStructure);
  /* CAN filter init */
  CAN_FilterInitStructure.CAN_FilterNumber=14;
  CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;
  CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;
  CAN_FilterInitStructure.CAN_FilterIdHigh=0x0000;
  CAN_FilterInitStructure.CAN_FilterIdLow=0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000;
  CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_FIFO0;
  CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;
  CAN_FilterInit(&CAN_FilterInitStructure);
  CAN_ITConfig(CAN2, CAN_IT_FMP0, ENABLE);
#endif

}

只看该作者 · 2012-10-17 10:43

// Enable CAN RX0 interrupt IRQ channel
  NVIC_InitStructure.NVIC_IRQChannel = CAN1_RX0_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 7;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
#ifdef DOUBLE_CAN_FUNC
  NVIC_InitStructure.NVIC_IRQChannel = CAN2_RX0_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 12;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
#endif

只看该作者 · 2012-10-17 10:44

TxMessage.ExtId = 0x18FEF328; //心跳
TxMessage.IDE = CAN_ID_EXT;
TxMessage.RTR = CAN_RTR_DATA;
TxMessage.DLC = 8;
TransmitMailbox = CAN_Transmit(CAN1, &TxMessage);
i = 0;
while((CAN_TransmitStatus(CAN1, TransmitMailbox) != CANTXOK) && (i < 0x1FF))
{
i++;
}
if(i >= 0x1FF)
Can_Send_FAIL_Cnt ++;
else
{
Can_Send_FAIL_Cnt = 0x00;

}

只看该作者 · 2012-10-17 10:45

CAN2的发送
TxMessage.ExtId = 0x18000028; //CAN ID
TxMessage.IDE = CAN_ID_EXT;
TxMessage.RTR = CAN_RTR_DATA;
TxMessage.DLC = 8;

TransmitMailbox = CAN_Transmit(CAN2, &TxMessage);
i = 0;
while((CAN_TransmitStatus(CAN2, TransmitMailbox) != CANTXOK) && (i < 0x1FF))
{
i++;
}