21ic电子技术开发论坛 › 单片机与嵌入式系统 › ST MCU › STM32L562E-DK开发板的BSP学习
返回列表 发新帖我要提问

[STM32L5] STM32L562E-DK开发板的BSP学习

[复制链接]
1621|0
 楼主| gaoyang9992006 发表于 2025-2-5 11:59 | 显示全部楼层 |阅读模式
stm32l5, BSP, ST, STM, STM32, STM32L
该工程所在位置   STM32Cube_FW_L5_V1.5.0\Projects\STM32L562E-DK\Examples\BSP\MDK-ARM
打开工程，找到main.c的main函数，查看硬件初始化函数
复制
  1. static void SystemHardwareInit(void)
    

  2. {
    

  3.   /* Init LEDs  */
    

  4.   if (LedInitialized != SET)
    

  5.   {
    

  6.     if (BSP_LED_Init(LED9) != BSP_ERROR_NONE)
    

  7.     {
    

  8.       Error_Handler();
    

  9.     }
    

  10.     if (BSP_LED_Init(LED10) != BSP_ERROR_NONE)
    

  11.     {
    

  12.       Error_Handler();
    

  13.     }
    

  14.     LedInitialized = SET;
    

  15.   }
    


  16. 

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

  18.   if (ButtonInitialized != SET)
    

  19.   {
    

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

  21.     {
    

  22.       Error_Handler();
    

  23.     }
    

  24.     ButtonInitialized = SET;
    

  25.   }
    


  26. 

  27.   /* Initialize the LCD */
    

  28.   if (LcdInitialized != SET)
    

  29.   {
    

  30.     LCD_UTILS_Drv_t lcdDrv;
    


  31. 

  32.     /* Initialize the LCD */
    

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

  34.     {
    

  35.       Error_Handler();
    

  36.     }
    


  37. 

  38.     /* Set UTIL_LCD functions */
    

  39.     lcdDrv.DrawBitmap  = BSP_LCD_DrawBitmap;
    

  40.     lcdDrv.FillRGBRect = BSP_LCD_FillRGBRect;
    

  41.     lcdDrv.DrawHLine   = BSP_LCD_DrawHLine;
    

  42.     lcdDrv.DrawVLine   = BSP_LCD_DrawVLine;
    

  43.     lcdDrv.FillRect    = BSP_LCD_FillRect;
    

  44.     lcdDrv.GetPixel    = BSP_LCD_ReadPixel;
    

  45.     lcdDrv.SetPixel    = BSP_LCD_WritePixel;
    

  46.     lcdDrv.GetXSize    = BSP_LCD_GetXSize;
    

  47.     lcdDrv.GetYSize    = BSP_LCD_GetYSize;
    

  48.     lcdDrv.SetLayer    = BSP_LCD_SetActiveLayer;
    

  49.     lcdDrv.GetFormat   = BSP_LCD_GetFormat;
    

  50.     UTIL_LCD_SetFuncDriver(&lcdDrv);
    


  51. 

  52.     /* Clear the LCD */
    

  53.     UTIL_LCD_Clear(UTIL_LCD_COLOR_WHITE);
    


  54. 

  55.     /* Set the display on */
    

  56.     if (BSP_LCD_DisplayOn(0) != BSP_ERROR_NONE)
    

  57.     {
    

  58.       Error_Handler();
    

  59.     }
    


  60. 

  61.     LcdInitialized = SET;
    

  62.   }
    


  63. 

  64.   /* Initialize the TouchScreen */
    

  65.   if (TsInitialized != SET)
    

  66.   {
    

  67.     TS_Init_t TsInit;
    


  68. 

  69.     /* Initialize the TouchScreen */
    

  70.     TsInit.Width       = 240;
    

  71.     TsInit.Height      = 240;
    

  72.     TsInit.Orientation = TS_ORIENTATION_PORTRAIT;
    

  73.     TsInit.Accuracy    = 10;
    

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

  75.     {
    

  76.       Error_Handler();
    

  77.     }
    


  78. 

  79.     /* Configure TS interrupt */
    

  80.     if (BSP_TS_EnableIT(0) != BSP_ERROR_NONE)
    

  81.     {
    

  82.       Error_Handler();
    

  83.     }
    


  84. 

  85.     TsInitialized = SET;
    

  86.   }
    

  87. }
该函数对LED 、按钮、LCD屏幕、触摸屏进行初始化，并由初始化完成标志位变量进行置位。
LED的初始化函数如下
复制
  1. int32_t BSP_LED_Init(Led_TypeDef Led)
    

  2. {
    

  3.   int32_t          status = BSP_ERROR_NONE;
    

  4.   GPIO_InitTypeDef GPIO_Init;
    


  5. 

  6.   /* Enable the GPIO_LED Clock */
    

  7.   if (Led == LED9)
    

  8.   {
    

  9.     LED9_GPIO_CLK_ENABLE();
    

  10.   }
    

  11.   else /* Led = LED10 */
    

  12.   {
    

  13.     /* Enable VddIO2 for GPIOG */
    

  14.     __HAL_RCC_PWR_CLK_ENABLE();
    

  15.     HAL_PWREx_EnableVddIO2();
    

  16.     LED10_GPIO_CLK_ENABLE();
    

  17.   }
    


  18. 

  19.   /* configure the GPIO_LED pin */
    

  20.   GPIO_Init.Pin   = LED_PIN[Led];
    

  21.   GPIO_Init.Mode  = GPIO_MODE_OUTPUT_PP;
    

  22.   GPIO_Init.Pull  = GPIO_PULLUP;
    

  23.   GPIO_Init.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    

  24.   HAL_GPIO_Init(LED_PORT[Led], &GPIO_Init);
    


  25. 

  26.   HAL_GPIO_WritePin(LED_PORT[Led], LED_PIN[Led], GPIO_PIN_SET);
    


  27. 

  28.   return status;
    

  29. }
该函数对IO所在的时钟进行了启用，并对IO进行配置，配置为输出高电平。
按钮的配置，如下
复制
  1. int32_t BSP_PB_Init(Button_TypeDef Button, ButtonMode_TypeDef ButtonMode)
    

  2. {
    

  3.   int32_t               status = BSP_ERROR_NONE;
    

  4.   GPIO_InitTypeDef      GPIO_Init;
    

  5.   uint32_t              BSP_BUTTON_IT_PRIO[BUTTONn] = {BSP_BUTTON_USER_IT_PRIORITY};
    

  6.   uint32_t              BUTTON_EXTI_LINE[BUTTONn]   = {BUTTON_USER_EXTI_LINE};
    

  7.   BSP_EXTI_LineCallback ButtonCallback[BUTTONn]     = {BUTTON_USER_EXTI_Callback};
    


  8. 

  9.   /* Enable the BUTTON clock */
    

  10.   BUTTON_USER_GPIO_CLK_ENABLE();
    


  11. 

  12.   GPIO_Init.Pin   = BUTTON_PIN[Button];
    

  13.   GPIO_Init.Pull  = GPIO_NOPULL;
    

  14.   GPIO_Init.Speed = GPIO_SPEED_FREQ_HIGH;
    


  15. 

  16.   if (ButtonMode == BUTTON_MODE_GPIO)
    

  17.   {
    

  18.     /* Configure Button pin as input */
    

  19.     GPIO_Init.Mode = GPIO_MODE_INPUT;
    

  20.     HAL_GPIO_Init(BUTTON_PORT[Button], &GPIO_Init);
    

  21.   }
    


  22. 

  23.   if (ButtonMode == BUTTON_MODE_EXTI)
    

  24.   {
    

  25.     /* Configure Button pin as input with External interrupt */
    

  26.     GPIO_Init.Mode = GPIO_MODE_IT_RISING;
    

  27.     HAL_GPIO_Init(BUTTON_PORT[Button], &GPIO_Init);
    


  28. 

  29.     if (HAL_EXTI_GetHandle(&hpb_exti[Button], BUTTON_EXTI_LINE[Button]) == HAL_OK)
    

  30.     {
    

  31.       if (HAL_EXTI_RegisterCallback(&hpb_exti[Button], HAL_EXTI_RISING_CB_ID, ButtonCallback[Button]) == HAL_OK)
    

  32.       {
    

  33.         /* Enable and set Button EXTI Interrupt to the lowest priority */
    

  34.         HAL_NVIC_SetPriority(BUTTON_IRQn[Button], BSP_BUTTON_IT_PRIO[Button], 0x00);
    

  35.         HAL_NVIC_EnableIRQ(BUTTON_IRQn[Button]);
    

  36.       }
    

  37.       else
    

  38.       {
    

  39.         status = BSP_ERROR_PERIPH_FAILURE;
    

  40.       }
    

  41.     }
    

  42.     else
    

  43.     {
    

  44.       status = BSP_ERROR_PERIPH_FAILURE;
    

  45.     }
    

  46.   }
    


  47. 

  48.   return status;
    

  49. }
可配置为IO模式和中断模式
复制
  1. <div>static void BUTTON_USER_EXTI_Callback(void)</div><div>{</div><div>  BSP_PB_Callback(BUTTON_USER);</div><div>}</div><div>
    

  2. </div><div><div>__weak void BSP_PB_Callback(Button_TypeDef Button)</div><div>{</div><div>  /* Prevent unused argument(s) compilation warning */</div><div>  UNUSED(Button);</div><div>
    

  3. </div><div>  /* This function should be implemented by the user application.</div><div>     It is called into this driver when an event on Button is triggered. */</div><div>}</div></div>

层层嵌套，不知道这么做目的是不是为了可移植性。

LCD的硬件接口初始化采用如下函数
复制
  1. int32_t BSP_LCD_Init(uint32_t Instance, uint32_t Orientation)
    

  2. {
    

  3.   int32_t status = BSP_ERROR_NONE;
    


  4. 

  5.   if ((Instance >= LCD_INSTANCES_NBR) || (Orientation > LCD_ORIENTATION_LANDSCAPE_ROT180))
    

  6.   {
    

  7.     status = BSP_ERROR_WRONG_PARAM;
    

  8.   }
    

  9.   else
    

  10.   {
    

  11.     /* Power up LCD */
    

  12.     ST7789H2_PowerUp();
    


  13. 

  14.     /* Probe the LCD driver */
    

  15.     if (ST7789H2_Probe(Orientation) != BSP_ERROR_NONE)
    

  16.     {
    

  17.       status = BSP_ERROR_COMPONENT_FAILURE;
    

  18.     }
    

  19.   }
    


  20. 

  21.   return status;
    

  22. }
根据函数定义到定义引脚的宏，知道了供电控制引脚、复位引脚、背光引脚，
复制
  1. #define LCD_POWER_GPIO_PORT               GPIOH
    

  2. #define LCD_POWER_GPIO_PIN                GPIO_PIN_0
    

  3. #define LCD_POWER_GPIO_CLOCK_ENABLE()     __HAL_RCC_GPIOH_CLK_ENABLE()
    

  4. #define LCD_RESET_GPIO_PORT               GPIOF
    

  5. #define LCD_RESET_GPIO_PIN                GPIO_PIN_14
    

  6. #define LCD_RESET_GPIO_CLOCK_ENABLE()     __HAL_RCC_GPIOF_CLK_ENABLE()
    

  7. #define LCD_BACKLIGHT_GPIO_PORT           GPIOE
    

  8. #define LCD_BACKLIGHT_GPIO_PIN            GPIO_PIN_1
    

  9. #define LCD_BACKLIGHT_GPIO_CLOCK_ENABLE() __HAL_RCC_GPIOE_CLK_ENABLE()
上电函数就是对LCD供电、复位、以及打开背光
复制
  1. static void ST7789H2_PowerUp(void)
    

  2. {
    

  3.   GPIO_InitTypeDef GPIO_InitStruct;
    


  4. 

  5.   /* Initialize and configure the ST7789H2 power pin */
    

  6.   LCD_POWER_GPIO_CLOCK_ENABLE();
    

  7.   GPIO_InitStruct.Mode  = GPIO_MODE_OUTPUT_PP;
    

  8.   GPIO_InitStruct.Pull  = GPIO_NOPULL;
    

  9.   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    

  10.   GPIO_InitStruct.Pin   = LCD_POWER_GPIO_PIN;
    

  11.   HAL_GPIO_Init(LCD_POWER_GPIO_PORT, &GPIO_InitStruct);
    


  12. 

  13.   /* Power on the ST7789H2 */
    

  14.   HAL_GPIO_WritePin(LCD_POWER_GPIO_PORT, LCD_POWER_GPIO_PIN, GPIO_PIN_RESET);
    


  15. 

  16.   /* Initialize and configure the ST7789H2 reset pin */
    

  17.   LCD_RESET_GPIO_CLOCK_ENABLE();
    

  18.   GPIO_InitStruct.Mode  = GPIO_MODE_OUTPUT_PP;
    

  19.   GPIO_InitStruct.Pull  = GPIO_NOPULL;
    

  20.   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    

  21.   GPIO_InitStruct.Pin   = LCD_RESET_GPIO_PIN;
    

  22.   HAL_GPIO_Init(LCD_RESET_GPIO_PORT, &GPIO_InitStruct);
    


  23. 

  24.   /* Reset the ST7789H2 */
    

  25.   HAL_GPIO_WritePin(LCD_RESET_GPIO_PORT, LCD_RESET_GPIO_PIN, GPIO_PIN_RESET);
    

  26.   HAL_Delay(1); /* wait at least 10us according ST7789H2 datasheet */
    

  27.   HAL_GPIO_WritePin(LCD_RESET_GPIO_PORT, LCD_RESET_GPIO_PIN, GPIO_PIN_SET);
    

  28.   HAL_Delay(120); /* wait maximum 120ms according ST7789H2 datasheet */
    


  29. 

  30.   /* Initialize GPIO for backlight control and enable backlight */
    

  31.   LCD_BACKLIGHT_GPIO_CLOCK_ENABLE();
    

  32.   GPIO_InitStruct.Mode      = GPIO_MODE_OUTPUT_PP;
    

  33.   GPIO_InitStruct.Pull      = GPIO_NOPULL;
    

  34.   GPIO_InitStruct.Speed     = GPIO_SPEED_FREQ_VERY_HIGH;
    

  35.   GPIO_InitStruct.Pin       = LCD_BACKLIGHT_GPIO_PIN;
    

  36.   HAL_GPIO_Init(LCD_BACKLIGHT_GPIO_PORT, &GPIO_InitStruct);
    

  37.   HAL_GPIO_WritePin(LCD_BACKLIGHT_GPIO_PORT, LCD_BACKLIGHT_GPIO_PIN, GPIO_PIN_SET);
    

  38. }
该LCD采用了并口发送数据
复制
  1. /** @defgroup STM32L562E-DK_LCD_Private_Functions STM32L562E-DK LCD Private Functions
    

  2.   * @{
    

  3.   */
    

  4. /**
    

  5.   * [url=home.php?mod=space&uid=247401]@brief[/url]  Probe the ST7789H2 LCD driver.
    

  6.   * @param  Orientation LCD_ORIENTATION_PORTRAIT, LCD_ORIENTATION_LANDSCAPE,
    

  7.   *                     LCD_ORIENTATION_PORTRAIT_ROT180 or LCD_ORIENTATION_LANDSCAPE_ROT180.
    

  8.   * @retval BSP status.
    

  9.   */
    

  10. static int32_t ST7789H2_Probe(uint32_t Orientation)
    

  11. {
    

  12.   int32_t                  status;
    

  13.   ST7789H2_IO_t            IOCtx;
    

  14.   uint32_t                 st7789h2_id;
    

  15.   static ST7789H2_Object_t ST7789H2Obj;
    

  16.   uint32_t                 lcd_orientation;
    


  17. 

  18.   /* Configure the LCD driver */
    

  19.   IOCtx.Address     = LCD_FMC_ADDRESS;
    

  20.   IOCtx.Init        = LCD_FMC_Init;
    

  21.   IOCtx.DeInit      = LCD_FMC_DeInit;
    

  22.   IOCtx.ReadReg     = LCD_FMC_ReadReg16;
    

  23.   IOCtx.WriteReg    = LCD_FMC_WriteReg16;
    

  24.   IOCtx.SendData    = LCD_FMC_Send;
    

  25.   IOCtx.GetTick     = LCD_FMC_GetTick;
    


  26. 

  27.   if (ST7789H2_RegisterBusIO(&ST7789H2Obj, &IOCtx) != ST7789H2_OK)
    

  28.   {
    

  29.     status = BSP_ERROR_BUS_FAILURE;
    

  30.   }
    

  31.   else if (ST7789H2_ReadID(&ST7789H2Obj, &st7789h2_id) != ST7789H2_OK)
    

  32.   {
    

  33.     status = BSP_ERROR_COMPONENT_FAILURE;
    

  34.   }
    

  35.   else if (st7789h2_id != ST7789H2_ID)
    

  36.   {
    

  37.     status = BSP_ERROR_UNKNOWN_COMPONENT;
    

  38.   }
    

  39.   else
    

  40.   {
    

  41.     Lcd_CompObj[0] = &ST7789H2Obj;
    

  42.     Lcd_Drv[0] = (LCD_Drv_t *) &ST7789H2_Driver;
    

  43.     if (Orientation == LCD_ORIENTATION_PORTRAIT)
    

  44.     {
    

  45.       lcd_orientation = ST7789H2_ORIENTATION_PORTRAIT;
    

  46.     }
    

  47.     else if (Orientation == LCD_ORIENTATION_LANDSCAPE)
    

  48.     {
    

  49.       lcd_orientation = ST7789H2_ORIENTATION_LANDSCAPE;
    

  50.     }
    

  51.     else if (Orientation == LCD_ORIENTATION_PORTRAIT_ROT180)
    

  52.     {
    

  53.       lcd_orientation = ST7789H2_ORIENTATION_PORTRAIT_ROT180;
    

  54.     }
    

  55.     else
    

  56.     {
    

  57.       lcd_orientation = ST7789H2_ORIENTATION_LANDSCAPE_ROT180;
    

  58.     }
    

  59.     if (Lcd_Drv[0]->Init(Lcd_CompObj[0], ST7789H2_FORMAT_RBG565, lcd_orientation) < 0)
    

  60.     {
    

  61.       status = BSP_ERROR_COMPONENT_FAILURE;
    

  62.     }
    

  63.     else
    

  64.     {
    

  65.       status = BSP_ERROR_NONE;
    

  66.     }
    

  67.   }
    


  68. 

  69.   return status;
    

  70. }
采用FMC地址给屏幕发送数据
复制
  1. #define LCD_REGISTER_ADDR FMC_BANK1_1
    

  2. #define LCD_DATA_ADDR     (FMC_BANK1_1 | 0x00000002UL)
    


  3. 

  4. #define LCD_FMC_ADDRESS   1U
复制
  1. static void Display_DemoDescription(void)
    

  2. {
    

  3.   char desc[60];
    


  4. 

  5.   /* Set font */
    

  6.   UTIL_LCD_SetFont(&Font20);
    


  7. 

  8.   /* Clear the LCD */
    

  9.   UTIL_LCD_Clear(UTIL_LCD_COLOR_WHITE);
    


  10. 

  11.   /* Set the LCD Text Color */
    

  12.   UTIL_LCD_SetTextColor(UTIL_LCD_COLOR_DARKBLUE);
    

  13.   UTIL_LCD_SetBackColor(UTIL_LCD_COLOR_WHITE);
    


  14. 

  15.   /* Display LCD messages */
    

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

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


  18. 

  19.   /* Draw Bitmap */
    

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


  21. 

  22.   UTIL_LCD_SetFont(&Font8);
    

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


  24. 

  25.   UTIL_LCD_SetFont(&Font12);
    

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

  27.   UTIL_LCD_SetTextColor(UTIL_LCD_COLOR_WHITE);
    

  28.   UTIL_LCD_SetBackColor(UTIL_LCD_COLOR_BLUE);
    

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

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

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

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

  33. }



编译工程烧录
8996767a2e1ce5ef9f.jpg

795967a2e1e05fd52.png

效果不错，这个工程里出现了函数指针结构体，比较难的一个知识点。
复制
  1. typedef int32_t (*ST7789H2_Write_Func)(void *, uint16_t, uint8_t *, uint32_t);
    

  2. typedef int32_t (*ST7789H2_Read_Func)(void *, uint16_t, uint8_t *, uint32_t);
    

  3. typedef int32_t (*ST7789H2_Send_Func)(void *, uint8_t *, uint32_t);
    


  4. 

  5. typedef struct
    

  6. {
    

  7.   ST7789H2_Write_Func   WriteReg;
    

  8.   ST7789H2_Read_Func    ReadReg;
    

  9.   ST7789H2_Send_Func    SendData;
    

  10.   void                  *handle;
    

  11. } ST7789H2_ctx_t;



回复

收藏 举报

相关帖子
返回列表 发新帖
高级模式
B Color Image Link Quote Code Smilies
您需要登录后才可以回帖 登录 | 注册

本版积分规则

gaoyang9992006 Image
个人签名：如果你觉得我的分享或者答复还可以，请给我点赞，谢谢。

2052

主题

16403

帖子

222

粉丝
快速回复 在线客服 返回列表 返回顶部