SPI Or UART On STM32H7S78-DK

cbarb2747 · ‎2026-02-15

I have an STM32H7S78-DK and I have used TouchGFX to create a GUI just fine. I am currently trying to use the fanout or the Arduino headers to communicate through SPI or UART to another board. The first thing I tried was using the SPI through the fanout board as it's soldered for the SPI4 by default with the fanout board. I used the female headers on the fanout board that corresponded with MOSI, MISO, etc for the SPI. I configured SPI4 in STMCubeMX and generated the code in STMCubeIDE. I just tried to send an array with Hello in the array in the form of hex values. However, I saw nothing coming out of the pins when I hooked it up to a logic analyzer. I then thought maybe I was using the wrong header and soldered some male pins next to the female pins which said CN12 which corresponded to what it said in the fanout boards documentation. I thought maybe the microbus female headers were not the right ones to use. Generated all the code and tried again and nothing. Then I though I'd try to use UART7 with the Arduino pins, but I still get nothing. Am I doing something wrong? I'd ideally like to use the STMOD+ connector with SPI. I can't figure out why it's not working. I used a STM32L476RG as a spi slave for a sanity check and I can send data actually to that board from a raspberry pi over SPI. So I am thinking with the STM32H7S78-DK it is just something I'm not enabling correctly, but it should be pretty straight forward if you are using STMCubeMX. So maybe it's a jumper or something. Any help would be greatly appreciated to get me on the right track. Thanks.

TDK · ‎2026-02-18

osKernelStart does not return. Any code after that call won't be executed.

Create a new OS thread and do what you want in there.

The code says this.

/* We should never get here as control is now taken by the scheduler */

If you feel a post has answered your question, please click "Accept as Solution".

View solution in original post

MGogr.1 · ‎2026-02-15

If your hardware is proper then, Some code snippet would be useful.

cbarb2747 · ‎2026-02-16

Here is the main.c with just a simple hello getting sent every two seconds.

/* 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 "FreeRTOS.h"
#include "cmsis_os2.h"
#include "app_touchgfx.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 ---------------------------------------------------------*/

CRC_HandleTypeDef hcrc;

DMA2D_HandleTypeDef hdma2d;

GPU2D_HandleTypeDef hgpu2d;

I2C_HandleTypeDef hi2c1;

JPEG_HandleTypeDef hjpeg;
DMA_HandleTypeDef handle_HPDMA1_Channel1;
DMA_HandleTypeDef handle_HPDMA1_Channel0;

LTDC_HandleTypeDef hltdc;

SPI_HandleTypeDef hspi4;

/* Definitions for defaultTask */
osThreadId_t defaultTaskHandle;
const osThreadAttr_t defaultTask_attributes = {
  .name = "defaultTask",
  .stack_size = 128 * 4,
  .priority = (osPriority_t) osPriorityNormal,
};
/* Definitions for TouchGFXTask */
osThreadId_t TouchGFXTaskHandle;
const osThreadAttr_t TouchGFXTask_attributes = {
  .name = "TouchGFXTask",
  .stack_size = 4096 * 4,
  .priority = (osPriority_t) osPriorityNormal,
};
/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
static void MPU_Config(void);
static void MX_GPIO_Init(void);
static void MX_HPDMA1_Init(void);
static void MX_LTDC_Init(void);
static void MX_CRC_Init(void);
static void MX_DMA2D_Init(void);
static void MX_JPEG_Init(void);
static void MX_FLASH_Init(void);
static void MX_I2C1_Init(void);
static void MX_GPU2D_Init(void);
static void MX_ICACHE_GPU2D_Init(void);
static void MX_SPI4_Init(void);
void StartDefaultTask(void *argument);
extern void TouchGFX_Task(void *argument);

/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
uint8_t tx_data[6] = {0x48, 0x65, 0x6c, 0x6c, 0x6f};
/* USER CODE END 0 */

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

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MPU Configuration--------------------------------------------------------*/
  MPU_Config();

  /* Enable the CPU Cache */

  /* Enable I-Cache---------------------------------------------------------*/
  SCB_EnableICache();

  /* Enable D-Cache---------------------------------------------------------*/
  SCB_EnableDCache();

  /* 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_HPDMA1_Init();
  MX_LTDC_Init();
  MX_CRC_Init();
  MX_DMA2D_Init();
  MX_JPEG_Init();
  MX_FLASH_Init();
  MX_I2C1_Init();
  MX_GPU2D_Init();
  MX_ICACHE_GPU2D_Init();
  MX_SPI4_Init();
  MX_TouchGFX_Init();
  /* Call PreOsInit function */
  MX_TouchGFX_PreOSInit();
  /* USER CODE BEGIN 2 */

  /* USER CODE END 2 */

  /* Init scheduler */
  osKernelInitialize();

  /* USER CODE BEGIN RTOS_MUTEX */
  /* add mutexes, ... */
  /* USER CODE END RTOS_MUTEX */

  /* USER CODE BEGIN RTOS_SEMAPHORES */
  /* add semaphores, ... */
  /* USER CODE END RTOS_SEMAPHORES */

  /* USER CODE BEGIN RTOS_TIMERS */
  /* start timers, add new ones, ... */
  /* USER CODE END RTOS_TIMERS */

  /* USER CODE BEGIN RTOS_QUEUES */
  /* add queues, ... */
  /* USER CODE END RTOS_QUEUES */

  /* Create the thread(s) */
  /* creation of defaultTask */
  defaultTaskHandle = osThreadNew(StartDefaultTask, NULL, &defaultTask_attributes);

  /* creation of TouchGFXTask */
  TouchGFXTaskHandle = osThreadNew(TouchGFX_Task, NULL, &TouchGFXTask_attributes);

  /* USER CODE BEGIN RTOS_THREADS */
  /* add threads, ... */
  /* USER CODE END RTOS_THREADS */

  /* USER CODE BEGIN RTOS_EVENTS */
  /* add events, ... */
  /* USER CODE END RTOS_EVENTS */

  /* Start scheduler */
  osKernelStart();

  /* We should never get here as control is now taken by the scheduler */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  HAL_GPIO_WritePin(SPI4_CS_GPIO_Port, SPI4_CS_Pin, GPIO_PIN_SET);

  while (1)
  {
	HAL_GPIO_WritePin(SPI4_CS_GPIO_Port, SPI4_CS_Pin, GPIO_PIN_RESET);
	HAL_SPI_Transmit(&hspi4, tx_data, sizeof(tx_data), 1000);
	HAL_GPIO_WritePin(SPI4_CS_GPIO_Port, SPI4_CS_Pin, GPIO_PIN_SET);
	HAL_Delay(2000);
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* 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 DMA2D Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_DMA2D_Init(void)
{

  /* USER CODE BEGIN DMA2D_Init 0 */

  /* USER CODE END DMA2D_Init 0 */

  /* USER CODE BEGIN DMA2D_Init 1 */

  /* USER CODE END DMA2D_Init 1 */
  hdma2d.Instance = DMA2D;
  hdma2d.Init.Mode = DMA2D_R2M;
  hdma2d.Init.ColorMode = DMA2D_OUTPUT_RGB888;
  hdma2d.Init.OutputOffset = 0;
  if (HAL_DMA2D_Init(&hdma2d) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN DMA2D_Init 2 */

  /* USER CODE END DMA2D_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 */

  FLASH_OBProgramInitTypeDef pOBInit = {0};

  /* USER CODE BEGIN FLASH_Init 1 */

  /* USER CODE END FLASH_Init 1 */
  HAL_FLASHEx_OBGetConfig(&pOBInit);
  if ((pOBInit.USERConfig1 & OB_IWDG_SW) != OB_IWDG_SW||
(pOBInit.USERConfig1 & OB_XSPI1_HSLV_ENABLE) != OB_XSPI1_HSLV_ENABLE||
(pOBInit.USERConfig1 & OB_XSPI2_HSLV_ENABLE) != OB_XSPI2_HSLV_ENABLE||
(pOBInit.USERConfig2 & OB_I2C_NI3C_I2C) != OB_I2C_NI3C_I2C)
  {
  if (HAL_FLASH_Unlock() != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_FLASH_OB_Unlock() != HAL_OK)
  {
    Error_Handler();
  }
  pOBInit.OptionType = OPTIONBYTE_USER;
  pOBInit.USERType = OB_USER_IWDG_SW|OB_USER_XSPI1_HSLV
                              |OB_USER_XSPI2_HSLV|OB_USER_I2C_NI3C;
  pOBInit.USERConfig1 = OB_IWDG_SW|OB_XSPI1_HSLV_ENABLE
                              |OB_XSPI2_HSLV_ENABLE;
  pOBInit.USERConfig2 = OB_I2C_NI3C_I2C;
  if (HAL_FLASHEx_OBProgram(&pOBInit) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_FLASH_OB_Lock() != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_FLASH_Lock() != HAL_OK)
  {
    Error_Handler();
  }
  }
  /* USER CODE BEGIN FLASH_Init 2 */

  /* USER CODE END FLASH_Init 2 */

}

/**
  * @brief GPU2D Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_GPU2D_Init(void)
{

  /* USER CODE BEGIN GPU2D_Init 0 */

  /* USER CODE END GPU2D_Init 0 */

  /* USER CODE BEGIN GPU2D_Init 1 */

  /* USER CODE END GPU2D_Init 1 */
  hgpu2d.Instance = GPU2D;
  if (HAL_GPU2D_Init(&hgpu2d) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN GPU2D_Init 2 */

  /* USER CODE END GPU2D_Init 2 */

}

/**
  * @brief HPDMA1 Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_HPDMA1_Init(void)
{

  /* USER CODE BEGIN HPDMA1_Init 0 */

  /* USER CODE END HPDMA1_Init 0 */

  /* Peripheral clock enable */
  __HAL_RCC_HPDMA1_CLK_ENABLE();

  /* HPDMA1 interrupt Init */
    HAL_NVIC_SetPriority(HPDMA1_Channel0_IRQn, 5, 0);
    HAL_NVIC_EnableIRQ(HPDMA1_Channel0_IRQn);
    HAL_NVIC_SetPriority(HPDMA1_Channel1_IRQn, 5, 0);
    HAL_NVIC_EnableIRQ(HPDMA1_Channel1_IRQn);

  /* USER CODE BEGIN HPDMA1_Init 1 */

  /* USER CODE END HPDMA1_Init 1 */
  /* USER CODE BEGIN HPDMA1_Init 2 */

  /* USER CODE END HPDMA1_Init 2 */

}

/**
  * @brief I2C1 Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_I2C1_Init(void)
{

  /* USER CODE BEGIN I2C1_Init 0 */

  /* USER CODE END I2C1_Init 0 */

  /* USER CODE BEGIN I2C1_Init 1 */

  /* USER CODE END I2C1_Init 1 */
  hi2c1.Instance = I2C1;
  hi2c1.Init.Timing = 0x00E063FF;
  hi2c1.Init.OwnAddress1 = 0;
  hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
  hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
  hi2c1.Init.OwnAddress2 = 0;
  hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
  hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
  hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
  if (HAL_I2C_Init(&hi2c1) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure Analogue filter
  */
  if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure Digital filter
  */
  if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN I2C1_Init 2 */

  /* USER CODE END I2C1_Init 2 */

}

/**
  * @brief ICACHE_GPU2D Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_ICACHE_GPU2D_Init(void)
{

  /* USER CODE BEGIN ICACHE_GPU2D_Init 0 */

  /* USER CODE END ICACHE_GPU2D_Init 0 */

  /* USER CODE BEGIN ICACHE_GPU2D_Init 1 */

  /* USER CODE END ICACHE_GPU2D_Init 1 */

  /** Enable instruction cache (default 2-ways set associative cache)
  */
  if (HAL_ICACHE_Enable() != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN ICACHE_GPU2D_Init 2 */

  /* USER CODE END ICACHE_GPU2D_Init 2 */

}

/**
  * @brief JPEG Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_JPEG_Init(void)
{

  /* USER CODE BEGIN JPEG_Init 0 */

  /* USER CODE END JPEG_Init 0 */

  /* USER CODE BEGIN JPEG_Init 1 */

  /* USER CODE END JPEG_Init 1 */
  hjpeg.Instance = JPEG;
  if (HAL_JPEG_Init(&hjpeg) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN JPEG_Init 2 */

  /* USER CODE END JPEG_Init 2 */

}

/**
  * @brief LTDC Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_LTDC_Init(void)
{

  /* USER CODE BEGIN LTDC_Init 0 */

  /* USER CODE END LTDC_Init 0 */

  LTDC_LayerCfgTypeDef pLayerCfg = {0};

  /* USER CODE BEGIN LTDC_Init 1 */

  /* USER CODE END LTDC_Init 1 */
  hltdc.Instance = LTDC;
  hltdc.Init.HSPolarity = LTDC_HSPOLARITY_AL;
  hltdc.Init.VSPolarity = LTDC_VSPOLARITY_AL;
  hltdc.Init.DEPolarity = LTDC_DEPOLARITY_AL;
  hltdc.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
  hltdc.Init.HorizontalSync = 4;
  hltdc.Init.VerticalSync = 4;
  hltdc.Init.AccumulatedHBP = 12;
  hltdc.Init.AccumulatedVBP = 12;
  hltdc.Init.AccumulatedActiveW = 812;
  hltdc.Init.AccumulatedActiveH = 492;
  hltdc.Init.TotalWidth = 820;
  hltdc.Init.TotalHeigh = 506;
  hltdc.Init.Backcolor.Blue = 0;
  hltdc.Init.Backcolor.Green = 0;
  hltdc.Init.Backcolor.Red = 0;
  if (HAL_LTDC_Init(&hltdc) != HAL_OK)
  {
    Error_Handler();
  }
  pLayerCfg.WindowX0 = 0;
  pLayerCfg.WindowX1 = 800;
  pLayerCfg.WindowY0 = 0;
  pLayerCfg.WindowY1 = 480;
  pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
  pLayerCfg.Alpha = 255;
  pLayerCfg.Alpha0 = 0;
  pLayerCfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_CA;
  pLayerCfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_CA;
  pLayerCfg.FBStartAdress = 0;
  pLayerCfg.ImageWidth = 800;
  pLayerCfg.ImageHeight = 480;
  pLayerCfg.Backcolor.Blue = 0;
  pLayerCfg.Backcolor.Green = 0;
  pLayerCfg.Backcolor.Red = 0;
  if (HAL_LTDC_ConfigLayer(&hltdc, &pLayerCfg, 0) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN LTDC_Init 2 */

  /* USER CODE END LTDC_Init 2 */

}

/**
  * @brief SPI4 Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_SPI4_Init(void)
{

  /* USER CODE BEGIN SPI4_Init 0 */

  /* USER CODE END SPI4_Init 0 */

  /* USER CODE BEGIN SPI4_Init 1 */

  /* USER CODE END SPI4_Init 1 */
  /* SPI4 parameter configuration*/
  hspi4.Instance = SPI4;
  hspi4.Init.Mode = SPI_MODE_MASTER;
  hspi4.Init.Direction = SPI_DIRECTION_2LINES;
  hspi4.Init.DataSize = SPI_DATASIZE_8BIT;
  hspi4.Init.CLKPolarity = SPI_POLARITY_LOW;
  hspi4.Init.CLKPhase = SPI_PHASE_1EDGE;
  hspi4.Init.NSS = SPI_NSS_SOFT;
  hspi4.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
  hspi4.Init.FirstBit = SPI_FIRSTBIT_MSB;
  hspi4.Init.TIMode = SPI_TIMODE_DISABLE;
  hspi4.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  hspi4.Init.CRCPolynomial = 0x7;
  hspi4.Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
  hspi4.Init.NSSPolarity = SPI_NSS_POLARITY_LOW;
  hspi4.Init.FifoThreshold = SPI_FIFO_THRESHOLD_01DATA;
  hspi4.Init.MasterSSIdleness = SPI_MASTER_SS_IDLENESS_00CYCLE;
  hspi4.Init.MasterInterDataIdleness = SPI_MASTER_INTERDATA_IDLENESS_00CYCLE;
  hspi4.Init.MasterReceiverAutoSusp = SPI_MASTER_RX_AUTOSUSP_DISABLE;
  hspi4.Init.MasterKeepIOState = SPI_MASTER_KEEP_IO_STATE_DISABLE;
  hspi4.Init.IOSwap = SPI_IO_SWAP_DISABLE;
  hspi4.Init.ReadyMasterManagement = SPI_RDY_MASTER_MANAGEMENT_INTERNALLY;
  hspi4.Init.ReadyPolarity = SPI_RDY_POLARITY_HIGH;
  if (HAL_SPI_Init(&hspi4) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN SPI4_Init 2 */

  /* USER CODE END SPI4_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_GPIOF_CLK_ENABLE();
  __HAL_RCC_GPIOE_CLK_ENABLE();
  __HAL_RCC_GPIOG_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOF, FRAME_RATE_Pin|RENDER_TIME_Pin|MCU_ACTIVE_Pin|VSYNC_FREQ_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(LCD_EN_GPIO_Port, LCD_EN_Pin, GPIO_PIN_SET);

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(LCD_BL_CTRL_GPIO_Port, LCD_BL_CTRL_Pin, GPIO_PIN_SET);

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(SPI4_CS_GPIO_Port, SPI4_CS_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pins : FRAME_RATE_Pin RENDER_TIME_Pin VSYNC_FREQ_Pin */
  GPIO_InitStruct.Pin = FRAME_RATE_Pin|RENDER_TIME_Pin|VSYNC_FREQ_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM;
  HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);

  /*Configure GPIO pin : MCU_ACTIVE_Pin */
  GPIO_InitStruct.Pin = MCU_ACTIVE_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(MCU_ACTIVE_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pins : LCD_EN_Pin SPI4_CS_Pin */
  GPIO_InitStruct.Pin = LCD_EN_Pin|SPI4_CS_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);

  /*Configure GPIO pin : TP_IRQ_Pin */
  GPIO_InitStruct.Pin = TP_IRQ_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(TP_IRQ_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pin : LCD_BL_CTRL_Pin */
  GPIO_InitStruct.Pin = LCD_BL_CTRL_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(LCD_BL_CTRL_GPIO_Port, &GPIO_InitStruct);

  /* EXTI interrupt init*/
  HAL_NVIC_SetPriority(TP_IRQ_EXTI_IRQn, 5, 0);
  HAL_NVIC_EnableIRQ(TP_IRQ_EXTI_IRQn);

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

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/* USER CODE BEGIN Header_StartDefaultTask */
/**
  * @brief  Function implementing the defaultTask thread.
  * @PAram  argument: Not used
  * @retval None
  */
/* USER CODE END Header_StartDefaultTask */
void StartDefaultTask(void *argument)
{
  /* USER CODE BEGIN 5 */
  /* Infinite loop */
  for(;;)
  {
    osDelay(1);
  }
  /* USER CODE END 5 */
}

 /* MPU Configuration */

static void MPU_Config(void)
{
  MPU_Region_InitTypeDef MPU_InitStruct = {0};

  /* Disables the MPU */
  HAL_MPU_Disable();

  /* Disables all MPU regions */
  for(uint8_t i=0; i<__MPU_REGIONCOUNT; i++)
  {
    HAL_MPU_DisableRegion(i);
  }

  /** Initializes and configures the Region and the memory to be protected
  */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER0;
  MPU_InitStruct.BaseAddress = 0x0;
  MPU_InitStruct.Size = MPU_REGION_SIZE_4GB;
  MPU_InitStruct.SubRegionDisable = 0x87;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /** Initializes and configures the Region and the memory to be protected
  */
  MPU_InitStruct.Number = MPU_REGION_NUMBER1;
  MPU_InitStruct.BaseAddress = 0x70000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_128MB;
  MPU_InitStruct.SubRegionDisable = 0x0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL1;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /** Initializes and configures the Region and the memory to be protected
  */
  MPU_InitStruct.Number = MPU_REGION_NUMBER2;
  MPU_InitStruct.Size = MPU_REGION_SIZE_2MB;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /** Initializes and configures the Region and the memory to be protected
  */
  MPU_InitStruct.Number = MPU_REGION_NUMBER3;
  MPU_InitStruct.BaseAddress = 0x90000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_32MB;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /** Initializes and configures the Region and the memory to be protected
  */
  MPU_InitStruct.Number = MPU_REGION_NUMBER4;
  MPU_InitStruct.BaseAddress = 0x20000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_64KB;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /** Initializes and configures the Region and the memory to be protected
  */
  MPU_InitStruct.Number = MPU_REGION_NUMBER5;
  MPU_InitStruct.BaseAddress = 0x24000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_512KB;
  MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /** Initializes and configures the Region and the memory to be protected
  */
  MPU_InitStruct.Number = MPU_REGION_NUMBER6;
  MPU_InitStruct.BaseAddress = 0x2406c000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_16KB;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /** Initializes and configures the Region and the memory to be protected
  */
  MPU_InitStruct.Number = MPU_REGION_NUMBER7;
  MPU_InitStruct.BaseAddress = 0x24070000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_8KB;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);
  /* Enables the MPU */
  HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);

}

/**
  * @brief  Period elapsed callback in non blocking mode
  * @note   This function is called  when TIM6 interrupt took place, inside
  * HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment
  * a global variable "uwTick" used as application time base.
  * @PAram  htim TIM handle
  * @retval None
  */
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
  /* USER CODE BEGIN Callback 0 */

  /* USER CODE END Callback 0 */
  if (htim->Instance == TIM6) {
    HAL_IncTick();
  }
  /* USER CODE BEGIN Callback 1 */

  /* USER CODE END Callback 1 */
}

/**
  * @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 */

cbarb2747 · ‎2026-02-18

Can anyone help me with this?

TDK · ‎2026-02-18

osKernelStart does not return. Any code after that call won't be executed.

Create a new OS thread and do what you want in there.

The code says this.

/* We should never get here as control is now taken by the scheduler */

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cbarb2747 · ‎2026-02-18

Oh man how did I miss that. I just skimmed past it to the while loop and interrupt functions. Thank you! I will try this out tonight.