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STM32MP157 processor and OpenAMP

Holti
Associate

‎2024-11-30 4:52 PM

Hello i have STM32MP157 board with A7 and M4 processors, i am trying to setup OpenAMP which works when i use the OpenAMP_TTY_echo
But when i try to create a new project from:

SMT32Cube IDE 1.16.0 version

STM32MP1 version: 1.6.0

I cannot seem to make it work

For example, when i deploy the example it properly opens the port /dev/ttyRPMSG0 and when i read with this command cat /dev/ttyRPMSG0 it wait for messages , so i connect to another temrinal send some messages and receive them perfectly

But when i try to use generated project the port is not even open and this is my output of the rpmsg0 :

[ 1.668065] rpmsg_sdb_drv_init(rpmsg_sdb): Init done
[ 40.830549] virtio_rpmsg_bus virtio0: creating channel rpmsg-tty addr 0x400
[ 40.837511] virtio_rpmsg_bus virtio0: creating channel rpmsg-tty addr 0x401
[ 40.848325] virtio_rpmsg_bus virtio0: rpmsg host is online

Looks good , also when starting the processor:

root@myir:~# dmesg | grep remoteproc
[ 1.667805] remoteproc remoteproc0: releasing m4
[ 1.749203] remoteproc remoteproc0: releasing m4
[ 1.788187] remoteproc remoteproc0: releasing m4
[ 1.923612] remoteproc remoteproc0: releasing m4
[ 4.222566] remoteproc remoteproc0: m4 is available
[ 40.754770] remoteproc remoteproc0: powering up m4
[ 40.797573] remoteproc remoteproc0: Booting fw image rproc-m4-fw, size 2443240
[ 40.865267] remoteproc remoteproc0: remote processor m4 is now up

I am not sure what i am doing wrong
This is my code

 

 

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "openamp.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <string.h>
#include <virt_uart.h>
#include <ctype.h> // For character transformations like toupper

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#define MAX_BUFFER_SIZE RPMSG_BUFFER_SIZE

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
IPCC_HandleTypeDef hipcc;

/* USER CODE BEGIN PV */
VIRT_UART_HandleTypeDef huart0;
VIRT_UART_HandleTypeDef huart1;

__IO FlagStatus VirtUart0RxMsg = RESET;
uint8_t VirtUart0ChannelBuffRx[MAX_BUFFER_SIZE];
uint16_t VirtUart0ChannelRxSize = 0;

__IO FlagStatus VirtUart1RxMsg = RESET;
uint8_t VirtUart1ChannelBuffRx[MAX_BUFFER_SIZE];
uint16_t VirtUart1ChannelRxSize = 0;

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_IPCC_Init(void);
int MX_OPENAMP_Init(int RPMsgRole, rpmsg_ns_bind_cb ns_bind_cb);
/* USER CODE BEGIN PFP */
void VIRT_UART0_RxCpltCallback(VIRT_UART_HandleTypeDef *huart);
void VIRT_UART1_RxCpltCallback(VIRT_UART_HandleTypeDef *huart);
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initialize the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */
    if(IS_ENGINEERING_BOOT_MODE())
  {
    /* Configure the system clock */
    SystemClock_Config();
  }


  /* USER CODE END Init */

  /*HW semaphore Clock enable*/
  __HAL_RCC_HSEM_CLK_ENABLE();
  /* IPCC initialisation */
   MX_IPCC_Init();
   MX_OPENAMP_Init(RPMSG_REMOTE, NULL);
  /* OpenAmp initialisation ---------------------------------*/


  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */

  /* USER CODE BEGIN 2 */
  /*
   * Create Virtual UART device
   * defined by a rpmsg channel attached to the remote device
   */

  if (VIRT_UART_Init(&huart0) != VIRT_UART_OK) {

    Error_Handler();
  }


  if (VIRT_UART_Init(&huart1) != VIRT_UART_OK) {

    Error_Handler();
  }

  /*Need to register callback for message reception by channels*/
  if(VIRT_UART_RegisterCallback(&huart0, VIRT_UART_RXCPLT_CB_ID, VIRT_UART0_RxCpltCallback) != VIRT_UART_OK)
  {
   Error_Handler();
  }
  if(VIRT_UART_RegisterCallback(&huart1, VIRT_UART_RXCPLT_CB_ID, VIRT_UART1_RxCpltCallback) != VIRT_UART_OK)
  {
    Error_Handler();
  }
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {

    OPENAMP_check_for_message();

    /* USER CODE END WHILE */

    if (VirtUart0RxMsg)
    {
        VirtUart0RxMsg = RESET;
        VIRT_UART_Transmit(&huart0, VirtUart0ChannelBuffRx, VirtUart0ChannelRxSize);
    }

    if (VirtUart1RxMsg) {
      VirtUart1RxMsg = RESET;
      VIRT_UART_Transmit(&huart1, VirtUart1ChannelBuffRx, VirtUart1ChannelRxSize);
    }
    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSIDivValue = RCC_HSI_DIV1;
  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  RCC_OscInitStruct.PLL2.PLLState = RCC_PLL_NONE;
  RCC_OscInitStruct.PLL3.PLLState = RCC_PLL_NONE;
  RCC_OscInitStruct.PLL4.PLLState = RCC_PLL_NONE;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** RCC Clock Config
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_ACLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
                              |RCC_CLOCKTYPE_PCLK3|RCC_CLOCKTYPE_PCLK4
                              |RCC_CLOCKTYPE_PCLK5;
  RCC_ClkInitStruct.AXISSInit.AXI_Clock = RCC_AXISSOURCE_HSI;
  RCC_ClkInitStruct.AXISSInit.AXI_Div = RCC_AXI_DIV1;
  RCC_ClkInitStruct.MCUInit.MCU_Clock = RCC_MCUSSOURCE_HSI;
  RCC_ClkInitStruct.MCUInit.MCU_Div = RCC_MCU_DIV1;
  RCC_ClkInitStruct.APB4_Div = RCC_APB4_DIV1;
  RCC_ClkInitStruct.APB5_Div = RCC_APB5_DIV1;
  RCC_ClkInitStruct.APB1_Div = RCC_APB1_DIV1;
  RCC_ClkInitStruct.APB2_Div = RCC_APB2_DIV1;
  RCC_ClkInitStruct.APB3_Div = RCC_APB3_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
}

/**
  * @brief IPCC Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_IPCC_Init(void)
{

  /* USER CODE BEGIN IPCC_Init 0 */

  /* USER CODE END IPCC_Init 0 */

  /* USER CODE BEGIN IPCC_Init 1 */

  /* USER CODE END IPCC_Init 1 */
  hipcc.Instance = IPCC;
  if (HAL_IPCC_Init(&hipcc) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN IPCC_Init 2 */

  /* USER CODE END IPCC_Init 2 */

}

/* USER CODE BEGIN 4 */


void VIRT_UART0_RxCpltCallback(VIRT_UART_HandleTypeDef *huart)
{
    uint16_t total_len;
    const char *response;

    // Ensure the received message is null-terminated
    uint16_t received_size = (huart->RxXferSize < MAX_BUFFER_SIZE - 1) ? huart->RxXferSize : MAX_BUFFER_SIZE - 2;
    memcpy(VirtUart0ChannelBuffRx, huart->pRxBuffPtr, received_size);
    VirtUart0ChannelBuffRx[received_size] = '\0';  // Null-terminate

    // Trim trailing whitespace and control characters
    while (received_size > 0 &&
           (VirtUart0ChannelBuffRx[received_size - 1] == '\n' ||
            VirtUart0ChannelBuffRx[received_size - 1] == '\r' ||
            VirtUart0ChannelBuffRx[received_size - 1] == ' ' ||
            VirtUart0ChannelBuffRx[received_size - 1] == '\t')) {
        VirtUart0ChannelBuffRx[received_size - 1] = '\0';
        received_size--;
    }


    // Check the received message and set the response
    if (strcmp((char *)VirtUart0ChannelBuffRx, "ledon") == 0)
    {
        response = "The LED is on";
    }
    else if (strcmp((char *)VirtUart0ChannelBuffRx, "ledoff") == 0)
    {
        response = "The LED is off";
    }
    else
    {
        response = "Unknown command";
    }

    // Copy the response into the buffer
    total_len = strlen(response);
    if (total_len >= MAX_BUFFER_SIZE)
    {
        total_len = MAX_BUFFER_SIZE - 1;
    }
    memcpy(VirtUart0ChannelBuffRx, response, total_len);
    VirtUart0ChannelBuffRx[total_len] = '\0';  // Null-terminate

    // Update the size for transmission
    VirtUart0ChannelRxSize = total_len;

    VirtUart0RxMsg = SET;
}





void VIRT_UART1_RxCpltCallback(VIRT_UART_HandleTypeDef *huart)
{


    /* copy received msg in a variable to sent it back to master processor in main infinite loop*/
    VirtUart1ChannelRxSize = huart->RxXferSize < MAX_BUFFER_SIZE? huart->RxXferSize : MAX_BUFFER_SIZE-1;
    memcpy(VirtUart1ChannelBuffRx, huart->pRxBuffPtr, VirtUart1ChannelRxSize);
    VirtUart1RxMsg = SET;
}

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @PAram  file: pointer to the source file name
  * @PAram  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
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I searched the internet but with no luck , not sure what i am missing

 

If somebody could help

Thank you

 

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