Code generated with errors

[SPrak.4]

I use STM32 Nucleo f429zi. I tried to replicate the application on the following link, and followed all the steps. I use USART3 with pins PD8 and PD9 (the manual says these pins are connected to ST-Link)

https://www.youtube.com/watch?v=grgNXdkmzzQ

I use STM Cube IDE. On STM Cude IDE -> there is Debug option to flash the code on Board. However, when I try to Debug - there are errors generated in the app_x-cube-ai.c file.

void MX_X_CUBE_AI_Process(void)
{
    aiValidationProcess();
    /* USER CODE BEGIN 1 */
	int nb_run = 20;
    int res;
 
    /* Example of definition of the buffers to store the tensor input/output */
    /*  type is dependent of the expected format                             */
    AI_ALIGNED(4)
    static ai_i8 in_data[AI_IMAGECLASSIFICATION_IN_1_SIZE_BYTES];
 
    AI_ALIGNED(4)
    static ai_i8 out_data[AI_IMAGECLASSIFICATION_OUT_1_SIZE_BYTES];
 
    /* Retrieve format/type of the first input tensor - index 0 */
    const ai_buffer_format fmt_ = AI_BUFFER_FORMAT(&ai_input[0]);   // ai_input undeclared
    const uint32_t type_ = AI_BUFFER_FMT_GET_TYPE(fmt_);
 
    /* Prepare parameters for float to Qmn conversion */
    const ai_i16 N_ = AI_BUFFER_FMT_GET_FBITS(fmt_);
    const ai_float scale_ = (0x1U << N_);
    const ai_i16 M_ =  AI_BUFFER_FMT_GET_BITS(fmt_)
                       - AI_BUFFER_FMT_GET_SIGN(fmt_) - N_;
    const ai_float max_ = (ai_float)(0x1U << M_);
 
    /* Perform nb_rub inferences (batch = 1) */
    while (--nb_run) {
 
        /* ---------------------------------------- */
        /* Data generation and Pre-Process          */
        /* ---------------------------------------- */
        /* - fill the input buffer with random data */
        for (ai_size i=0;  i < AI_IMAGECLASSIFICATION_IN_1_SIZE; i++ ) {
 
            /* Generate random data in the range [-1, 1] */
            ai_float val = 2.0f * (ai_float)rand() / (ai_float)RAND_MAX - 1.0f;   // RAND_MAX undeclared
 
            /* Convert the data if necessary */
            if (type_ == AI_BUFFER_FMT_TYPE_FLOAT) {
                ((ai_float *)in_data)[i] = val;
            } else { /* AI_BUFFER_FMT_TYPE_Q */
                /* Scale the values in the range [-2^M, 2^M] */
                val *= max_;
                /* Convert float to Qmn format */
                const ai_i32 tmp_ = AI_ROUND(val * scale_, ai_i32);  // expected expression before ai_132
                in_data[i] =  AI_CLAMP(tmp_, -128, 127, ai_i8);  // expected expression before ai_i8
            }
        }
 
        /* Perform the inference */
        res = aiRun(in_data, out_data);
        if (res) {
            // ...
            return;
        }
 
        /* Post-Process - process the output buffer */
        // ...
    }
    /* USER CODE END 1 */
}

Eventhough I got these error. I tried to validate on target, just to see what happens. I selected COM PORT 3 (COM 3 and COM 4 were the available options) with baud rate 115200. I got error "No board connected or invalid firware or restart board". I tried with COM port 4, but got the same error.

Could someone please help me out and let me know as to what is going wrong here.

Thanks in advance

[SPrak.4]

I tried to debug something using breakpoints. The neural model was initialized and I received the print "Ready to received a CMD from the Host". After this the code gets stuck is a IF condition that is under the following function

static HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout)

{

 /* Wait until flag is set */

 while ((__HAL_UART_GET_FLAG(huart, Flag) ? SET : RESET) == Status)

 {

  /* Check for the Timeout */

  if (Timeout != HAL_MAX_DELAY)

  {

   if ((Timeout == 0U) || ((HAL_GetTick() - Tickstart) > Timeout))

   {

    /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */

    CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE));

    CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);

    huart->gState = HAL_UART_STATE_READY;

    huart->RxState = HAL_UART_STATE_READY;

    /* Process Unlocked */

    __HAL_UNLOCK(huart);

    return HAL_TIMEOUT;

   }

  }

 }

 return HAL_OK;

}

The code waits until the flag is SET. Could you let me know what is the cause behind this. I have not entered any code of my own. I just followed the procedure that was given in the video tutorial.

Regards,

Sinduja