【STM32L562 DK试用】基础外设体验

只看该作者 · 2025-3-8 11:34

开发板自带了一块240*240分辨率的触摸屏：

本次基于官方demo进行修改，从而在屏幕上显示相应的文字。首先进行系统和时钟的初始化：

HAL_StatusTypeDef HAL_Init(void)

{

  HAL_StatusTypeDef  status = HAL_OK;



  /* Set Interrupt Group Priority */

  HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_3);



  /* Insure time base clock coherency */

  SystemCoreClockUpdate();



  /* Use SysTick as time base source and configure 1ms tick (default clock after Reset is MSI) */

  if (HAL_InitTick(TICK_INT_PRIORITY) != HAL_OK)

  {

    status = HAL_ERROR;

  }

  else

  {

    /* Init the low level hardware */

    HAL_MspInit();

  }



  /* Return function status */

  return status;

}

然后进行相关HMI设备和LED等的初始化：

复制

static void SystemHardwareInit(void)

{

  /* Init LEDs  */

  if (LedInitialized != SET)

  {

    if (BSP_LED_Init(LED9) != BSP_ERROR_NONE)

    {

      Error_Handler();

    }

    if (BSP_LED_Init(LED10) != BSP_ERROR_NONE)

    {

      Error_Handler();

    }

    LedInitialized = SET;

  }



  /* Init User push-button in EXTI Mode */

  if (ButtonInitialized != SET)

  {

    if (BSP_PB_Init(BUTTON_USER, BUTTON_MODE_EXTI) != BSP_ERROR_NONE)

    {

      Error_Handler();

    }

    ButtonInitialized = SET;

  }



  /* Initialize the LCD */

  if (LcdInitialized != SET)

  {

    LCD_UTILS_Drv_t lcdDrv;



    /* Initialize the LCD */

    if (BSP_LCD_Init(0, LCD_ORIENTATION_PORTRAIT) != BSP_ERROR_NONE)

    {

      Error_Handler();

    }



    /* Set UTIL_LCD functions */

    lcdDrv.DrawBitmap  = BSP_LCD_DrawBitmap;

    lcdDrv.FillRGBRect = BSP_LCD_FillRGBRect;

    lcdDrv.DrawHLine   = BSP_LCD_DrawHLine;

    lcdDrv.DrawVLine   = BSP_LCD_DrawVLine;

    lcdDrv.FillRect    = BSP_LCD_FillRect;

    lcdDrv.GetPixel    = BSP_LCD_ReadPixel;

    lcdDrv.SetPixel    = BSP_LCD_WritePixel;

    lcdDrv.GetXSize    = BSP_LCD_GetXSize;

    lcdDrv.GetYSize    = BSP_LCD_GetYSize;

    lcdDrv.SetLayer    = BSP_LCD_SetActiveLayer;

    lcdDrv.GetFormat   = BSP_LCD_GetFormat;

    UTIL_LCD_SetFuncDriver(&lcdDrv);



    /* Clear the LCD */

    UTIL_LCD_Clear(UTIL_LCD_COLOR_WHITE);



    /* Set the display on */

    if (BSP_LCD_DisplayOn(0) != BSP_ERROR_NONE)

    {

      Error_Handler();

    }



    LcdInitialized = SET;

  }



  /* Initialize the TouchScreen */

  if (TsInitialized != SET)

  {

    TS_Init_t TsInit;



    /* Initialize the TouchScreen */

    TsInit.Width       = 240;

    TsInit.Height      = 240;

    TsInit.Orientation = TS_ORIENTATION_PORTRAIT;

    TsInit.Accuracy    = 10;

    if (BSP_TS_Init(0, &TsInit) != BSP_ERROR_NONE)

    {

      Error_Handler();

    }



    /* Configure TS interrupt */

    if (BSP_TS_EnableIT(0) != BSP_ERROR_NONE)

    {

      Error_Handler();

    }



    TsInitialized = SET;

  }

}

调用屏幕API进行显示：

复制

static void Display_DemoDescription(void)

{

  char desc[60];



  /* Set font */

  UTIL_LCD_SetFont(&Font20);



  /* Clear the LCD */

  UTIL_LCD_Clear(UTIL_LCD_COLOR_WHITE);



  /* Set the LCD Text Color */

  UTIL_LCD_SetTextColor(UTIL_LCD_COLOR_DARKBLUE);

  UTIL_LCD_SetBackColor(UTIL_LCD_COLOR_WHITE);



  /* Display LCD messages */

  UTIL_LCD_DisplayStringAt(0, 10, (uint8_t *)"STM32L562E-DK BSP", CENTER_MODE);

  UTIL_LCD_DisplayStringAt(0, 35, (uint8_t *)"drivers example", CENTER_MODE);



  /* Draw Bitmap */

  UTIL_LCD_DrawBitmap(80, 65, (uint8_t *)st**);



  UTIL_LCD_SetFont(&Font8);

  UTIL_LCD_DisplayStringAt(0, 220, (uint8_t *)"Copyright (c) STMicroelectronics 2019", CENTER_MODE);



  UTIL_LCD_SetFont(&Font12);

  UTIL_LCD_FillRect(0, 145, 240, 50, UTIL_LCD_COLOR_BLUE);

  UTIL_LCD_SetTextColor(UTIL_LCD_COLOR_WHITE);

  UTIL_LCD_SetBackColor(UTIL_LCD_COLOR_BLUE);

  UTIL_LCD_DisplayStringAt(0, 135, (uint8_t *)"Hello 21IC", CENTER_MODE);

  UTIL_LCD_DisplayStringAt(0, 150, (uint8_t *)"Press User push-button", CENTER_MODE);

  UTIL_LCD_DisplayStringAt(0, 165, (uint8_t *)"to start :", CENTER_MODE);

  sprintf(desc,"%s example", BSP_examples[DemoIndex].DemoName);

  UTIL_LCD_DisplayStringAt(0, 180, (uint8_t *)desc, CENTER_MODE);

}

显示效果：