stm32h750 x-cube-ai , ai_network_create_and_init() code stuck

[wink]

[fauvarque.daniel]

You probably didn't enable the CRC IP in your application

Regards

[FuShenXiao · Accepted solution]

I have already enabled the CRC IP by adding "__HAL_RCC_CRC_CLK_ENABLE();" before "AI_Init();" but still have the log "ai_network_create error - type=51 code=65"

The following is a part of my main.c file

/* 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"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
#include "string.h"
#include "ai_platform.h"
#include "network.h"
#include "network_data.h"
/* USER CODE END Includes */

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

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

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

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

CRC_HandleTypeDef hcrc;

UART_HandleTypeDef huart4;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
static void MX_GPIO_Init(void);
static void MX_CRC_Init(void);
static void MX_FLASH_Init(void);
static void MX_UART4_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

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

int fputc(int ch, FILE *f)
{
    HAL_UART_Transmit(&huart4, (uint8_t *)&ch, 1, 0xffff);
    return ch;
}

int fgetc(FILE *f)
{
    uint8_t ch = 0;
    HAL_UART_Receive(&huart4, &ch, 1, 0xffff);
    return ch;
}

ai_handle network;
float aiInData[AI_NETWORK_IN_1_SIZE];
float aiOutData[AI_NETWORK_OUT_1_SIZE];
ai_u8 activations[AI_NETWORK_DATA_ACTIVATIONS_SIZE];

ai_buffer * ai_input;
ai_buffer * ai_output;

static void AI_Init(void);
static void AI_Run(float *pIn, float *pOut);
void PictureCharArrayToFloat(uint8_t *srcBuf,float *dstBuf,int len);


void Uart_send(char * str);
#define UART_BUFF_LEN 1024
#define ONE_FRAME_LEN 1+784+2
uint16_t uart_rx_length = 0;
uint8_t uart_rx_byte = 0;
uint8_t uart_rx_buffer[UART_BUFF_LEN];
volatile uint8_t goRunning = 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--------------------------------------------------------*/

  /* Update SystemCoreClock variable according to RCC registers values. */
  SystemCoreClockUpdate();

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_CRC_Init();
  MX_FLASH_Init();
  MX_UART4_Init();
  /* USER CODE BEGIN 2 */
  __HAL_RCC_CRC_CLK_ENABLE();
  AI_Init();
  memset(uart_rx_buffer,0,784);
  HAL_UART_Receive_IT(&huart4, (uint8_t *)&uart_rx_byte, 1);
  /* USER CODE END 2 */

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

    /* USER CODE BEGIN 3 */
	    char str[10];
	    if(goRunning>0)
	    {
	        if(uart_rx_length == ONE_FRAME_LEN)
	        {
	            PictureCharArrayToFloat(uart_rx_buffer+1,aiInData,28*28);
	            AI_Run(aiInData, aiOutData);
	        }
	        memset(uart_rx_buffer,0,784);
	        goRunning = 0;
	        uart_rx_length = 0;
	    }
  }
  /* USER CODE END 3 */
}

/**
  * @brief CRC Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_CRC_Init(void)
{

  /* USER CODE BEGIN CRC_Init 0 */

  /* USER CODE END CRC_Init 0 */

  /* USER CODE BEGIN CRC_Init 1 */

  /* USER CODE END CRC_Init 1 */
  hcrc.Instance = CRC;
  hcrc.Init.DefaultPolynomialUse = DEFAULT_POLYNOMIAL_ENABLE;
  hcrc.Init.DefaultInitValueUse = DEFAULT_INIT_VALUE_ENABLE;
  hcrc.Init.InputDataInversionMode = CRC_INPUTDATA_INVERSION_NONE;
  hcrc.Init.OutputDataInversionMode = CRC_OUTPUTDATA_INVERSION_DISABLE;
  hcrc.InputDataFormat = CRC_INPUTDATA_FORMAT_BYTES;
  if (HAL_CRC_Init(&hcrc) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN CRC_Init 2 */

  /* USER CODE END CRC_Init 2 */

}

/**
  * @brief FLASH Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_FLASH_Init(void)
{

  /* USER CODE BEGIN FLASH_Init 0 */

  /* USER CODE END FLASH_Init 0 */

  /* USER CODE BEGIN FLASH_Init 1 */

  /* USER CODE END FLASH_Init 1 */
  /* USER CODE BEGIN FLASH_Init 2 */

  /* USER CODE END FLASH_Init 2 */

}

/**
  * @brief UART4 Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_UART4_Init(void)
{

  /* USER CODE BEGIN UART4_Init 0 */

  /* USER CODE END UART4_Init 0 */

  /* USER CODE BEGIN UART4_Init 1 */

  /* USER CODE END UART4_Init 1 */
  huart4.Instance = UART4;
  huart4.Init.BaudRate = 115200;
  huart4.Init.WordLength = UART_WORDLENGTH_8B;
  huart4.Init.StopBits = UART_STOPBITS_1;
  huart4.Init.Parity = UART_PARITY_NONE;
  huart4.Init.Mode = UART_MODE_TX_RX;
  huart4.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart4.Init.OverSampling = UART_OVERSAMPLING_16;
  huart4.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart4.Init.ClockPrescaler = UART_PRESCALER_DIV1;
  huart4.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&huart4) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_UARTEx_SetTxFifoThreshold(&huart4, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_UARTEx_SetRxFifoThreshold(&huart4, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_UARTEx_DisableFifoMode(&huart4) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN UART4_Init 2 */

  /* USER CODE END UART4_Init 2 */

}

/**
  * @brief GPIO Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOE_CLK_ENABLE();
  __HAL_RCC_GPIOG_CLK_ENABLE();
  __HAL_RCC_GPIOM_CLK_ENABLE();
  __HAL_RCC_GPIOD_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();
  __HAL_RCC_GPIOF_CLK_ENABLE();
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();

/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}

/* USER CODE BEGIN 4 */
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle)
{
	if(goRunning ==0)
	{
		if (uart_rx_length < UART_BUFF_LEN)
		{
			uart_rx_buffer[uart_rx_length] = uart_rx_byte;
			uart_rx_length++;

			if (uart_rx_byte == '\n')
			{
				goRunning = 1;
			}
		}
		else
		{
			//rt_kprintf("rx len over");
			uart_rx_length = 0;
		}
	}
	HAL_UART_Receive_IT(&huart4, (uint8_t *)&uart_rx_byte, 1);
}

void Uart_send(char * str)
{
	HAL_UART_Transmit(&huart4, (uint8_t *)str, strlen(str),0xffff);
}

static void AI_Init(void)
{
  ai_error err;

  /* Create a local array with the addresses of the activations buffers */
  const ai_handle act_addr[] = { activations };
  /* Create an instance of the model */
  err = ai_network_create_and_init(&network, act_addr, NULL);
  if (err.type != AI_ERROR_NONE) {
    printf("ai_network_create error - type=%d code=%d\r\n", err.type, err.code);
    Error_Handler();
  }
  ai_input = ai_network_inputs_get(network, NULL);
  ai_output = ai_network_outputs_get(network, NULL);
}

static void AI_Run(float *pIn, float *pOut)
{
	char logStr[100];
	int count = 0;
	float max = 0;
  ai_i32 batch;
  ai_error err;

  /* Update IO handlers with the data payload */
  ai_input[0].data = AI_HANDLE_PTR(pIn);
  ai_output[0].data = AI_HANDLE_PTR(pOut);

  batch = ai_network_run(network, ai_input, ai_output);
  if (batch != 1) {
    err = ai_network_get_error(network);
    printf("AI ai_network_run error - type=%d code=%d\r\n", err.type, err.code);
    Error_Handler();
  }
  for (uint32_t i = 0; i < AI_NETWORK_OUT_1_SIZE; i++) {

	  sprintf(logStr,"%d  %8.6f\r\n",i,aiOutData[i]);
	  Uart_send(logStr);
	  if(max<aiOutData[i])
	  {
		  count = i;
		  max= aiOutData[i];
	  }
  }
  sprintf(logStr,"current number is %d\r\n",count);
  Uart_send(logStr);
}

void PictureCharArrayToFloat(uint8_t *srcBuf,float *dstBuf,int len)
{
	for(int i=0;i<len;i++)
	{
		dstBuf[i] = srcBuf[i];//==1?0:1;
	}
}
/* 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 */

Best Regards

[wink]

I have identified the issue, which is that printf forgot to redirect and the PLL settings generated automatically by cubemx are incorrect. These two errors were mixed together and caused