CAN Communication in normal mode in STM32F407

[rohitkumarkv07]

I want to receive the MessageRx_CAN [8] in my RxFifo 0 buffer but i cannot get that. Could you please help me out how can i implement that to get if want this requirment.

DLC = 8;

StdId = 0x245;

IDE = CAN_ID_STD;

RTR = CAN_RTR_DATA;

I have attachted my GetRxFifoMessage function part.

Kindly check and correct and resolve my issue asap.

[SofLit · Accepted solution]

Hello @rohitkumarkv07 

First, please review our recommendations on how to post a thread on this community. Especially on how to share a source code: https://community.st.com/t5/community-guidelines/how-to-write-your-question-to-maximize-your-chances-to-find-a/ta-p/575228.

Second, did you configure filters to receive CAN frames? Even to receive all possible IDs, you need to configure at least one filter for your FIFO0.

Example:

  sFilterConfig.FilterMode = CAN_FILTERMODE_IDMASK;
  sFilterConfig.FilterScale = CAN_FILTERSCALE_32BIT;
  sFilterConfig.FilterIdHigh = 0x0000;
  sFilterConfig.FilterIdLow = 0x0000;
  sFilterConfig.FilterMaskIdHigh = 0x0000;
  sFilterConfig.FilterMaskIdLow = 0x0000;
  sFilterConfig.FilterFIFOAssignment = CAN_RX_FIFO0;
  sFilterConfig.FilterActivation = ENABLE;

Don't forget to configure the filter bank:

  sFilterConfig.FilterBank = <depends on the CAN isntance used>
  sFilterConfig.SlaveStartFilterBank = <depends on the CAN isntance used>

Hope it helps.

[SofLit]

Hello,

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