NUCLEO-H503RB: FDCAN communication issue

[ekatpurerohan]

I am use nucleo-h503rb evk board and i am configure fdcan communication. I have mention below my code please see. I have did not comes output on FDCAN communication.

please send me demo code for that

[ekatpurerohan]

also, I Have one of thing just check. I have DSO channel 1 no connected in STM32H503RBT6 board CAN TX pin with respected to ground. But it's not show any output on DSO.

[SofLit]

I didn't understood your sentence but to view the Tx frames with an oscilloscope on Tx pin, you need also to connect the oscillo probe to the ground.

[ekatpurerohan]

printf("Initialization complete. Starting main loop.\r\n");

/* Configure the FDCAN TX Header */

TxHeader.Identifier = 0x321; // Standard or Extended ID

TxHeader.DataLength = FDCAN_DLC_BYTES_8; // Data length (up to 64 bytes)

TxHeader.BitRateSwitch = FDCAN_BRS_OFF; // Bit rate switch (CAN FD)

TxHeader.FDFormat = FDCAN_CLASSIC_CAN; // Message format (CLASSIC_CAN or CAN_FD)

TxHeader.TxFrameType = FDCAN_DATA_FRAME; // Frame type (DATA_FRAME or REMOTE_FRAME)

TxHeader.ErrorStateIndicator = FDCAN_ESI_ACTIVE; // Error state indicator

TxHeader.TxEventFifoControl = FDCAN_NO_TX_EVENTS; // Tx event FIFO control

/* Start the FDCAN peripheral */

if (HAL_FDCAN_Start(&hfdcan1) != HAL_OK)

{

Error_Handler(); // Handle FDCAN start error

}

is this correct for transmit data STM32H503RBT6

[SofLit]

Hello,

I suggest you to refer to one of the examples provided in STM32G4 (normally it's the same FDCAN implementation):

https://github.com/STMicroelectronics/STM32CubeG4/blob/master/Projects/STM32G474E-EVAL/Examples/FDCAN/FDCAN_Classic_Frame_Networking/Src/main.c

[ekatpurerohan]

is this project to import in stm32h503? If possible, then how? Can you share me procedure.

[ekatpurerohan]

Hello SofLit

I am trying to check on Digital Storage Oscilloscope waveform. I was CANTX pin directly connected DSO and check the waveform. But CANTX pin has not Show any Waveform. Why? any Reason?