关于ST V3.5固件库 can的问题，求教香版~~~~~~~~~~~~

只看该作者 · 2012-3-15 10:32

香版，我使用的是107，在设置can2的时候发现CAN_FilterInit里面只能设置can1，无法配置can2，求教~~~~~~莫非配置can1 就不用配置can2了吗？？？

void CAN_FilterInit(CAN_FilterInitTypeDef* CAN_FilterInitStruct)
{
  uint32_t filter_number_bit_pos = 0;
  /* Check the parameters */
  assert_param(IS_CAN_FILTER_NUMBER(CAN_FilterInitStruct->CAN_FilterNumber));
  assert_param(IS_CAN_FILTER_MODE(CAN_FilterInitStruct->CAN_FilterMode));
  assert_param(IS_CAN_FILTER_SCALE(CAN_FilterInitStruct->CAN_FilterScale));
  assert_param(IS_CAN_FILTER_FIFO(CAN_FilterInitStruct->CAN_FilterFIFOAssignment));
  assert_param(IS_FUNCTIONAL_STATE(CAN_FilterInitStruct->CAN_FilterActivation));
  filter_number_bit_pos = ((uint32_t)1) << CAN_FilterInitStruct->CAN_FilterNumber;
  /* Initialisation mode for the filter */
  CAN1->FMR |= FMR_FINIT;
  /* Filter Deactivation */
  CAN1->FA1R &= ~(uint32_t)filter_number_bit_pos;
  /* Filter Scale */
  if (CAN_FilterInitStruct->CAN_FilterScale == CAN_FilterScale_16bit)
  {
/* 16-bit scale for the filter */
CAN1->FS1R &= ~(uint32_t)filter_number_bit_pos;
/* First 16-bit identifier and First 16-bit mask */
/* Or First 16-bit identifier and Second 16-bit identifier */
CAN1->sFilterRegister[CAN_FilterInitStruct->CAN_FilterNumber].FR1 =
((0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterMaskIdLow) << 16) |
      (0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterIdLow);
/* Second 16-bit identifier and Second 16-bit mask */
/* Or Third 16-bit identifier and Fourth 16-bit identifier */
CAN1->sFilterRegister[CAN_FilterInitStruct->CAN_FilterNumber].FR2 =
((0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterMaskIdHigh) << 16) |
      (0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterIdHigh);
  }
  if (CAN_FilterInitStruct->CAN_FilterScale == CAN_FilterScale_32bit)
  {
/* 32-bit scale for the filter */
CAN1->FS1R |= filter_number_bit_pos;
/* 32-bit identifier or First 32-bit identifier */
CAN1->sFilterRegister[CAN_FilterInitStruct->CAN_FilterNumber].FR1 =
((0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterIdHigh) << 16) |
      (0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterIdLow);
/* 32-bit mask or Second 32-bit identifier */
CAN1->sFilterRegister[CAN_FilterInitStruct->CAN_FilterNumber].FR2 =
((0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterMaskIdHigh) << 16) |
      (0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterMaskIdLow);
  }
  /* Filter Mode */
  if (CAN_FilterInitStruct->CAN_FilterMode == CAN_FilterMode_IdMask)
  {
/*Id/Mask mode for the filter*/
CAN1->FM1R &= ~(uint32_t)filter_number_bit_pos;
  }
  else /* CAN_FilterInitStruct->CAN_FilterMode == CAN_FilterMode_IdList */
  {
/*Identifier list mode for the filter*/
CAN1->FM1R |= (uint32_t)filter_number_bit_pos;
  }
  /* Filter FIFO assignment */
  if (CAN_FilterInitStruct->CAN_FilterFIFOAssignment == CAN_Filter_FIFO0)
  {
/* FIFO 0 assignation for the filter */
CAN1->FFA1R &= ~(uint32_t)filter_number_bit_pos;
  }
  if (CAN_FilterInitStruct->CAN_FilterFIFOAssignment == CAN_Filter_FIFO1)
  {
/* FIFO 1 assignation for the filter */
CAN1->FFA1R |= (uint32_t)filter_number_bit_pos;
  }

  /* Filter activation */
  if (CAN_FilterInitStruct->CAN_FilterActivation == ENABLE)
  {
CAN1->FA1R |= filter_number_bit_pos;
  }
  /* Leave the initialisation mode for the filter */
  CAN1->FMR &= ~FMR_FINIT;
}