lvgl8.0.0移植后颜色显示不正常

Question

原来使用的lvgl6.0.0的系统，所有的组件颜色显示都是正常，然而移植完8.0.0版本后颜色缺不正常，发现给的颜色为白色rgb（r8,g8,b8）565格式,实际显示成了rg(r8,b8,0)的颜色，其中b的颜色被砍了，变成了0，检查lv_conf.h文件跟原来给的是一样的16位深的设置，是哪里还需要修改吗，有能解惑么?

Answer 1

• 这篇博客: LVGL8.1笔记2–触摸移植（2022-0603）中的 下面列出我移植完成的.c和.h文件 部分也许能够解决你的问题, 你可以仔细阅读以下内容或跳转源博客中阅读:
  

• lv_port_indev.h

  /**
   * @file lv_port_indev_templ.h
   *
   */
  
   /*Copy this file as "lv_port_indev.h" and set this value to "1" to enable content*/
  #if 1
  
  #ifndef LV_PORT_INDEV_H
  #define LV_PORT_INDEV_H
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /*********************
   *      INCLUDES
   *********************/
  #include "lvgl.h"
  
  /*********************
   *      DEFINES
   *********************/
  
  /**********************
   *      TYPEDEFS
   **********************/
  
  /**********************
   * GLOBAL PROTOTYPES
   **********************/
  void lv_port_indev_init(void);
  /**********************
   *      MACROS
   **********************/
  
  #ifdef __cplusplus
  } /*extern "C"*/
  #endif
  
  #endif /*LV_PORT_INDEV_TEMPL_H*/
  
  #endif /*Disable/Enable content*/
  
  

  lv_port_indev.c

  /**
   * @file lv_port_indev_templ.c
   *
   */
  
   /*Copy this file as "lv_port_indev.c" and set this value to "1" to enable content*/
  #if 1
  
  /*********************
   *      INCLUDES
   *********************/
  #include "lv_port_indev.h"
  #include "../../lvgl.h"
  
  #include "touch.h"
  
  /*********************
   *      DEFINES
   *********************/
  
  /**********************
   *      TYPEDEFS
   **********************/
  
  /**********************
   *  STATIC PROTOTYPES
   **********************/
  
  static void touchpad_init(void);
  static void touchpad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
  static bool touchpad_is_pressed(void);
  static void touchpad_get_xy(lv_coord_t * x, lv_coord_t * y);
  
  /**********************
   *  STATIC VARIABLES
   **********************/
  lv_indev_t * indev_touchpad;
  
  /**********************
   *      MACROS
   **********************/
  
  /**********************
   *   GLOBAL FUNCTIONS
   **********************/
  
  void lv_port_indev_init(void)
  {
      /**
       * Here you will find example implementation of input devices supported by LittelvGL:
       *  - Touchpad
       *  - Mouse (with cursor support)
       *  - Keypad (supports GUI usage only with key)
       *  - Encoder (supports GUI usage only with: left, right, push)
       *  - Button (external buttons to press points on the screen)
       *
       *  The `..._read()` function are only examples.
       *  You should shape them according to your hardware
       */
  
      static lv_indev_drv_t indev_drv;
  
      /*------------------
       * Touchpad
       * -----------------*/
  
      /*Initialize your touchpad if you have*/
      touchpad_init();
  
      /*Register a touchpad input device*/
      lv_indev_drv_init(&indev_drv);
      indev_drv.type = LV_INDEV_TYPE_POINTER;
      indev_drv.read_cb = touchpad_read;
      indev_touchpad = lv_indev_drv_register(&indev_drv);
  }
  
  /**********************
   *   STATIC FUNCTIONS
   **********************/
  
  /*------------------
   * Touchpad
   * -----------------*/
  
  /*Initialize your touchpad*/
  static void touchpad_init(void)
  {
      /*Your code comes here*/
  }
  
  /*Will be called by the library to read the touchpad*/
  static void touchpad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
  {
      static lv_coord_t last_x = 0;
      static lv_coord_t last_y = 0;
  
      /*Save the pressed coordinates and the state*/
      if(touchpad_is_pressed()) {
          touchpad_get_xy(&last_x, &last_y);
          data->state = LV_INDEV_STATE_PR;
      } else {
          data->state = LV_INDEV_STATE_REL;
      }
  
      /*Set the last pressed coordinates*/
      data->point.x = last_x;
      data->point.y = last_y;
  }
  
  /*Return true is the touchpad is pressed*/
  static bool touchpad_is_pressed(void)
  {
      /*Your code comes here*/
      if(TP_PRES_DOWN & tp_dev.sta)
      {
          return true;
      }
      return false;
  }
  
  /*Get the x and y coordinates if the touchpad is pressed*/
  static void touchpad_get_xy(lv_coord_t * x, lv_coord_t * y)
  {
      /*Your code comes here*/
  
      (*x) = tp_dev.x[0];
      (*y) = tp_dev.y[0];
  }
  
  
  
  #else /*Enable this file at the top*/
  
  /*This dummy typedef exists purely to silence -Wpedantic.*/
  typedef int keep_pedantic_happy;
  #endif