Fatal error stm32h7xx_hal_can.h: No such file or directory

[Dragonmonkey]

Please help how I can find this library.

STM32-H7A3ZI-Q with latest STM32CubeIDE

[TDK]

There is no such file.

There is stm32h7xx_hal_fdcan.h, which you can find here:

https://github.com/STMicroelectronics/stm32h7xx_hal_driver/blob/a13c7d54ce2a8493b3c2a4ae591953afee1ce5c2/Inc/stm32h7xx_hal_fdcan.h

If you initialize an FDCAN peripheral within your IOC file and generate code, CubeMX will put this file in your project.

[Dragonmonkey]

My friend sent me the code with #include "stm32h7xx_hal_can.h"

But no way I can find it.

[Dragonmonkey]

Here ia the code sample

#include "stm32h7xx_hal.h"

#include "stm32h7xx_hal_adc.h"

#include "stm32h7xx_hal_can.h"

ADC_HandleTypeDef hadc1;

CAN_HandleTypeDef hcan1;

void SystemClock_Config(void);

static void MX_GPIO_Init(void);

static void MX_ADC1_Init(void);

static void MX_CAN1_Init(void);

int main(void) {

  HAL_Init();

  SystemClock_Config();

  MX_GPIO_Init();

  MX_ADC1_Init();

  MX_CAN1_Init();

  uint16_t adc_value;

  while (1) {

    // Start ADC conversion

    HAL_ADC_Start(&hadc1);

    // Wait for conversion to complete

    if (HAL_ADC_PollForConversion(&hadc1, 100) == HAL_OK) {

      // Read ADC value

      adc_value = HAL_ADC_GetValue(&hadc1);

      // Process ADC value (filtering, amplification if needed)

      // Send data through CAN bus

      CAN_TxHeaderTypeDef TxHeader;

      uint8_t TxData[8];

      TxHeader.StdId = 0x321; // Example CAN ID

      TxHeader.DLC = 8;

      TxHeader.IDE = CAN_ID_STD;

      TxHeader.RTR = CAN_RTR_DATA;

      TxData[0] = (adc_value >> 😎 & 0xFF;

      TxData[1] = adc_value & 0xFF;

      HAL_CAN_AddTxMessage(&hcan1, &TxHeader, TxData, (uint32_t *)CAN_TX_MAILBOX0);

    }

  }

}

[Dragonmonkey]

If I can't find CAN, can I use FDCAN as replacement. And below ts the code for CAN. Canyou help convert to FDCAN, please?

static void MX_CAN1_Init(void) {

  hcan1.Instance = CAN1;

  hcan1.Init.Prescaler = 1;

  hcan1.Init.Mode = CAN_MODE_NORMAL;

  hcan1.Init.SyncJumpWidth = CAN_SJW_1TQ;

  hcan1.Init.TimeSeg1 = CAN_BS1_13TQ;

  hcan1.Init.TimeSeg2 = CAN_BS2_2TQ;

  hcan1.Init.TimeTriggeredMode = DISABLE;

  hcan1.Init.AutoBusOff = ENABLE;

  hcan1.Init.AutoWakeUp = DISABLE;

  hcan1.Init.AutoRetransmission = DISABLE;

  hcan1.Init.ReceiveFifoLocked = DISABLE;

  hcan1.Init.TransmitFifoPriority = DISABLE;

  if (HAL_CAN_Init(&hcan1) != HAL_OK) {

    Error_Handler();

  }

}

int main(void) {

  HAL_Init();

  SystemClock_Config();

  MX_GPIO_Init();

  MX_ADC1_Init();

  MX_CAN1_Init();

  uint16_t adc_value;

  while (1) {

    // Start ADC conversion

    HAL_ADC_Start(&hadc1);

    // Wait for conversion to complete

    if (HAL_ADC_PollForConversion(&hadc1, 100) == HAL_OK) {

      // Read ADC value

      adc_value = HAL_ADC_GetValue(&hadc1);

      // Process ADC value (filtering, amplification if needed)

      // Send data through CAN bus

      CAN_TxHeaderTypeDef TxHeader;

      uint8_t TxData[8];

      TxHeader.StdId = 0x321; // Example CAN ID

      TxHeader.DLC = 8;

      TxHeader.IDE = CAN_ID_STD;

      TxHeader.RTR = CAN_RTR_DATA;

      TxData[0] = (adc_value >> 😎 & 0xFF;

      TxData[1] = adc_value & 0xFF;

      HAL_CAN_AddTxMessage(&hcan1, &TxHeader, TxData, (uint32_t *)CAN_TX_MAILBOX0);

    }

  }

}

[SofLit]

Hello,

There is no stm32h7xx_hal_can.h in H7 cube HAL. You need to use FDCAN (stm32h7xx_hal_fdcan.h).

You need to use FDCAN peripheral in classic mode as a replacement of bxCAN.

Refer to this example: https://github.com/STMicroelectronics/STM32CubeH7/tree/b9d11df3020deef82310c88f3d8590d076b43ef7/Projects/STM32H743I-EVAL/Examples/FDCAN/FDCAN_Classic_Frame_Networking

[TDK]

It doesn't exist, as I explained earlier, so you won't be finding it.

Perhaps ask your friend why he is including a file that doesn't exist.