`canfd-transmit.ino`

Seeed Studio XIAO STM32C5 · File : canfd-transmit.ino · Language : C · Use case : Envoyer un message CAN FD via le transceiver embarqué TCAN3403.

Configures the FDCAN2 controller to send periodic frames via the integrated transceiver.

Uses FDCAN2 connected to the TCAN3403-Q1 with 120Ω termination. Ensure FDCAN2 TX/RX pins are correctly mapped in CubeMX. Classic mode is used here for compatibility, but FD mode is supported by the hardware.

canfd-transmit.ino

#include "stm32c5xx_hal.h"

FDCAN_HandleTypeDef hfdcan2;
FDCAN_FilterTypeDef sFilterConfig;
FDCAN_TxHeaderTypeDef TxHeader;
uint8_t TxData[8] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08};

int main(void) {
  HAL_Init();
  // Init FDCAN2 (connecté au TCAN3403)
  hfdcan2.Instance = FDCAN2;
  hfdcan2.Init.ClockDivider = FDCAN_CLOCK_DIV1;
  hfdcan2.Init.FrameFormat = FDCAN_FRAME_CLASSIC; // Ou FDCAN_FRAME_FD_BRS pour FD
  hfdcan2.Init.Mode = FDCAN_MODE_NORMAL;
  // ... configuration timing ...
  HAL_FDCAN_Init(&hfdcan2);
  HAL_FDCAN_Start(&hfdcan2);

  TxHeader.Identifier = 0x123;
  TxHeader.IdType = FDCAN_STANDARD_ID;
  TxHeader.TxFrameType = FDCAN_DATA_FRAME;
  TxHeader.DataLength = 8;
  TxHeader.ErrorStateIndicator = FDCAN_ESI_ACTIVE;
  TxHeader.BitRateSwitch = FDCAN_BRS_OFF;
  TxHeader.FDFormat = FDCAN_CLASSIC_CAN;
  TxHeader.TxEventFifoControl = FDCAN_NO_TX_EVENTS;
  TxHeader.MessageMarker = 0;

  while(1) {
    HAL_FDCAN_AddMessageToTxFifoQ(&hfdcan2, &TxHeader, TxData);
    HAL_Delay(1000);
  }
}

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