HAL_OSPI_Transmit_DMA not working for NbData > 0xFFFF .

[Bertha]

Step to reproduce :

In cubeMX:

Select NucleoU575ZI.

Clean all pin

Set OCTOSPI to QSPI (see code below)

Configure GPDMA (see code below)

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 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 "gpdma.h"
#include "octospi.h"
#include "gpio.h"
 
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
 
/* 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 ---------------------------------------------------------*/
 
/* USER CODE BEGIN PV */
uint8_t framebuffer_16bsize[65535];  //0xffff
uint8_t bigger_framebuffer[65536];  //0xffff
/* USER CODE END PV */
 
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void SystemPower_Config(void);
/* USER CODE BEGIN PFP */
 
void qspi_send_data(uint8_t * framebuffer, uint32_t size);
 
/* 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, Initializes the Flash interface and the Systick. */
  HAL_Init();
 
  /* USER CODE BEGIN Init */
 
  /* USER CODE END Init */
 
  /* Configure the system clock */
  SystemClock_Config();
 
  /* Configure the System Power */
  SystemPower_Config();
 
  /* USER CODE BEGIN SysInit */
 
  /* USER CODE END SysInit */
 
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_GPDMA1_Init();
  MX_OCTOSPI1_Init();
  /* USER CODE BEGIN 2 */
 
  /* USER CODE END 2 */
 
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
 
	 qspi_send_data(framebuffer_16bsize, sizeof(framebuffer_16bsize));
	 qspi_send_data(bigger_framebuffer, sizeof(bigger_framebuffer));
	 HAL_Delay(50);
    /* USER CODE END WHILE */
 
    /* 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};
 
  /** Configure the main internal regulator output voltage
  */
  if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE4) != HAL_OK)
  {
    Error_Handler();
  }
 
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
  RCC_OscInitStruct.MSIState = RCC_MSI_ON;
  RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_4;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
 
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
                              |RCC_CLOCKTYPE_PCLK3;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_MSI;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB3CLKDivider = RCC_HCLK_DIV1;
 
  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  {
    Error_Handler();
  }
}
 
/**
  * @brief Power Configuration
  * @retval None
  */
static void SystemPower_Config(void)
{
 
  /*
   * Switch to SMPS regulator instead of LDO
   */
  if (HAL_PWREx_ConfigSupply(PWR_SMPS_SUPPLY) != HAL_OK)
  {
    Error_Handler();
  }
/* USER CODE BEGIN PWR */
/* USER CODE END PWR */
}
 
/* USER CODE BEGIN 4 */
 
void qspi_send_data(uint8_t * framebuffer, uint32_t size)
{
	 OSPI_RegularCmdTypeDef sCommand = {0};
	 sCommand.OperationType = HAL_OSPI_OPTYPE_COMMON_CFG;
 
	 sCommand.Instruction = 0x32;
	 sCommand.InstructionMode = HAL_OSPI_INSTRUCTION_1_LINE;
	 sCommand.InstructionSize = HAL_OSPI_INSTRUCTION_8_BITS;
 
	 sCommand.Address = 0x2C << 8;
	 sCommand.AddressMode = HAL_OSPI_ADDRESS_1_LINE;
	 sCommand.AddressSize = HAL_OSPI_ADDRESS_24_BITS;
 
	 sCommand.AlternateBytesMode = HAL_OSPI_ALTERNATE_BYTES_NONE;
 
	 sCommand.DataMode = HAL_OSPI_DATA_4_LINES;
	 sCommand.NbData = size;
 
 
	 sCommand.SIOOMode = HAL_OSPI_SIOO_INST_ONLY_FIRST_CMD;
 
	 sCommand.DummyCycles = 0;
 
	 HAL_OSPI_Command(&hospi1, &sCommand, 1000);
//	 error = HAL_OSPI_Transmit(&hospi1, (uint8_t *) framebuffer, 5000);
 
	 HAL_OSPI_Transmit_DMA(&hospi1, (uint8_t *) framebuffer);
 
	 while (HAL_OSPI_GetState(&hospi1) != HAL_OSPI_STATE_READY){};
 
 
 
 
}
 
/* 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 */

the "qspi_send_data(framebuffer_16bsize, sizeof(framebuffer_16bsize));" works perfectly as expected.

But the "qspi_send_data(bigger_framebuffer, sizeof(bigger_framebuffer))"; does not works and even stay in infinite loop with larger data.

The thing is : everywhere in hal doc and code the size is 32b and therefore should not be limited to 16b.

Regards

[Tesla DeLorean]

The DMA transfer counter register is 16-bit wide. It's a hardware limitation.

It doesn't have to count byte transfers. More data can go over in half-word or word forms.

For DMA units supporting double buffers there can be two separate or contiguous regions described.

[Bertha]

Dear Tesla DeLorean,

Thanks for your answer, maybe ST should modify function prototype to 16b.

Going to word forms will allow me to send 4*0xffff datas = 262 140 which is not enough.. I need 368*448*2 B = 329728 B.

I am sorry I am not sure to understand your last point, is this could be a solution to my issue ?

Or I should try something else ?

Regards