LVGL移植STM32F1基于STM32CubeMX配置硬件SPI驱动1.8寸TFT ST7735S跑LVGL图形demo

Posted 2023-03-12 perseverance52

【LVGL移植】STM32F1基于STM32CubeMX配置硬件SPI驱动1.8寸TFT ST7735S屏幕跑LVGL图形demo

• 🎬运行LVGL 按键组件demo
  

✨基于STM32CubeMX配置工程是因为方便移植，只要是STM32芯片，拿到我的这个工程源码就可以根据自己的stm32芯片，自行通过STM32CubeMX工具软件进行工程配置，并将我的工程中的屏幕驱动文件拷贝到自己的工程目录下，修改2个驱动函数代码就可以轻松点亮。

• 📌相关篇《STM32F1基于STM32CubeMX配置硬件SPI驱动1.8寸TFT LCD128X160 ST7735S屏幕》
• ✨版本说明：基于LVGL8.3版本裸机移植的。不包含操作OS系统，**当然我会将个人移植成功的源代码工程分享出来。**方便大家移植到自己所使用的芯片上，如果和我使用的屏幕相同那么可以做到无缝对接，如果是其他屏幕需要自行准备屏幕驱动代码，并进行替换。点亮屏幕后在做移植。基于STM32CubeMX配置工程，可以方便统一性，移植更容易简单。

• 🔖工程所使用的是STM32F103VET6
• ⚡本项目是针对：1.8寸TFT LCD128X160 ST7735S屏幕

🎉折腾了我一天半，大部分时间在找不显示的问题。首先是没有处理好刷屏显示函数（disp_flush），处理好了，就缺一个可运行的demo.以为LVGL难度不大，只要按照步骤和工程项目结构布局，没有什么难度。

• 📺新手可以看正点原子的LVGL移植视频教程：

第4讲 基础篇-LVGL移植（无操作系统1）

• 📍LVGL在线文档：https://docs.lvgl.io/8.3/

📋在线文档可以帮助我们快速查阅LVGL的API的使用和参数以及提供了相关的demo案例。直接拷贝到项目中就可以运行验证，根据个人需求可以自定义设计。

📑个人移植工程步骤

1. 下载LVGL库。
2. 提取必要的LVGL库文件。
3. 提前准备好，可以驱动点亮屏幕的工程模版。
4. 导入LVGL到现有的工程模版当中。
5. 添加源文件以及头文件路径。
6. 修改导入的LVGL的配置函数和宏定义。
7. 添加LVGL demo函数。

⛳注意事项

• 🍁工程文件架构
  

• 🌴项目树结构：
  

• 🔰其他屏幕接口移植，只要能点亮的，目标芯片满足LVGL要求的基本都可以移植，重点和难点就是要对接换LVGL刷屏显示函数（disp_flush）：

static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)

    if(disp_flush_enabled) 
        /*The most simple case (but also the slowest) to put all pixels to the screen one-by-one*/

        int32_t x;
        int32_t y;
        for(y = area->y1; y <= area->y2; y++) 
            for(x = area->x1; x <= area->x2; x++) 
                /*Put a pixel to the display. For example:*/
                /*put_px(x, y, *color_p)*/
				LCD_Fast_DrawPoint(x, y, color_p->full);
                color_p++;
            
        
    

🛠Keil工程设置

• 🌿屏蔽报警设置：--diag_suppress=188,546,68,111,1215
  
• 🌿头文件路径设置

• 🌿勾选C99 Mode选项
  

🔨项目参数配置

• 🌿在LV_CONF_h文件中启用相关宏和配置缓冲区大小。（直接关系到编译是否成功，默认LVGL配置的是128U）
  
• 🌿在屏幕显示源文件lv_port_disp_template.c中设置屏幕像素和刷屏显示函数

#ifndef MY_DISP_HOR_RES
    #warning Please define or replace the macro MY_DISP_HOR_RES with the actual screen width, default value 320 is used for now.
    #define MY_DISP_HOR_RES    160
#endif

#ifndef MY_DISP_VER_RES
    #warning Please define or replace the macro MY_DISP_HOR_RES with the actual screen height, default value 240 is used for now.
    #define MY_DISP_VER_RES    128
#endif

/*Flush the content of the internal buffer the specific area on the display
 *You can use DMA or any hardware acceleration to do this operation in the background but
 *'lv_disp_flush_ready()' has to be called when finished.*/
static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)

    if(disp_flush_enabled) 
        /*The most simple case (but also the slowest) to put all pixels to the screen one-by-one*/

        int32_t x;
        int32_t y;
        for(y = area->y1; y <= area->y2; y++) 
            for(x = area->x1; x <= area->x2; x++) 
                /*Put a pixel to the display. For example:*/
                /*put_px(x, y, *color_p)*/
							LCD_Fast_DrawPoint(x, y, color_p->full);
                color_p++;
            
        
    

//	LCD_Color_Fill(area->x1, area->y1, area->x2, area->y2,color_p);
    /*IMPORTANT!!!
     *Inform the graphics library that you are ready with the flushing*/
    lv_disp_flush_ready(disp_drv);

📝主程序代码

/* 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 "spi.h"
#include "tim.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "lcd.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
#include "lcd.h"
#include "lv_port_disp_template.h"
//#include "lv_port_indev.h"// 输入设备初始化（如果没有实现就注释掉）
#include "lvgl.h"
/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
uint16_t cnt = 0;
/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)

//    static uint32_t time = 0;
    if (htim->Instance == TIM6) // 定时器6基地址
    
        lv_tick_inc(1);//lvgl 的 1ms 心跳
        cnt++;
    
    __HAL_TIM_CLEAR_IT(&htim6, TIM_IT_UPDATE);


/*
static void lv_ex_label(void)

    static char *STR = "Perseverance51";
    lv_obj_t *label = lv_label_create(lv_scr_act());
    lv_label_set_recolor(label, true);
    lv_label_set_long_mode(label, LV_LABEL_LONG_SCROLL_CIRCULAR); //Circular scroll
    lv_obj_set_width(label, 160);
    lv_label_set_text_fmt(label, "Gitee: %s",STR);
    lv_obj_align(label, LV_ALIGN_CENTER, 0, 10);

    lv_obj_t *label2 = lv_label_create(lv_scr_act());
    lv_label_set_recolor(label2, true);
    lv_label_set_long_mode(label2, LV_LABEL_LONG_SCROLL_CIRCULAR); //Circular scroll
    lv_obj_set_width(label2, 160);
    lv_label_set_text_fmt(label2, "Hello world!");
    lv_obj_align(label2, LV_ALIGN_CENTER, 0, -10);

*/
static lv_style_t style_btn;
static lv_style_t style_btn_pressed;
static lv_style_t style_btn_red;

static lv_color_t darken(const lv_color_filter_dsc_t * dsc, lv_color_t color, lv_opa_t opa)

    LV_UNUSED(dsc);
    return lv_color_darken(color, opa);


static void style_init(void)

    /*Create a simple button style*/
    lv_style_init(&style_btn);
    lv_style_set_radius(&style_btn, 10);
    lv_style_set_bg_opa(&style_btn, LV_OPA_COVER);
    lv_style_set_bg_color(&style_btn, lv_palette_lighten(LV_PALETTE_GREY, 3));
    lv_style_set_bg_grad_color(&style_btn, lv_palette_main(LV_PALETTE_GREY));
    lv_style_set_bg_grad_dir(&style_btn, LV_GRAD_DIR_VER);

    lv_style_set_border_color(&style_btn, lv_color_black());
    lv_style_set_border_opa(&style_btn, LV_OPA_20);
    lv_style_set_border_width(&style_btn, 2);

    lv_style_set_text_color(&style_btn, lv_color_black());

    /*Create a style for the pressed state.
     *Use a color filter to simply modify all colors in this state*/
    static lv_color_filter_dsc_t color_filter;
    lv_color_filter_dsc_init(&color_filter, darken);
    lv_style_init(&style_btn_pressed);
    lv_style_set_color_filter_dsc(&style_btn_pressed, &color_filter);
    lv_style_set_color_filter_opa(&style_btn_pressed, LV_OPA_20);

    /*Create a red style. Change only some colors.*/
    lv_style_init(&style_btn_red);
    lv_style_set_bg_color(&style_btn_red, lv_palette_main(LV_PALETTE_RED));
    lv_style_set_bg_grad_color(&style_btn_red, lv_palette_lighten(LV_PALETTE_RED, 3));


/**
 * Create styles from scratch for buttons.
 */
void lv_example_get_started_2(void)

    /*Initialize the style*/
    style_init();

    /*Create a button and use the new styles*/
    lv_obj_t * btn = lv_btn_create(lv_scr_act());
    /* Remove the styles coming from the theme
     * Note that size and position are also stored as style properties
     * so lv_obj_remove_style_all will remove the set size and position too */
    lv_obj_remove_style_all(btn);
    lv_obj_set_pos(btn, 10, 10);
    lv_obj_set_size(btn, 120, 50);
    lv_obj_add_style(btn, &style_btn, 0);
    lv_obj_add_style(btn, &style_btn_pressed, LV_STATE_PRESSED);

    /*Add a label to the button*/
    lv_obj_t * label = lv_label_create(btn);
    lv_label_set_text(label, "Button");
    lv_obj_center(label);

    /*Create another button and use the red style too*/
    lv_obj_t * btn2 = lv_btn_create(lv_scr_act());
    lv_obj_remove_style_all(btn2);                      /*Remove the styles coming from the theme*/
    lv_obj_set_pos(btn2, 10, 80);
    lv_obj_set_size(btn2, 120, 50);
    lv_obj_add_style(btn2, &style_btn, 0);
    lv_obj_add_style(btn2, &style_btn_red, 0);
    lv_obj_add_style(btn2, &style_btn_pressed, LV_STATE_PRESSED);
    lv_obj_set_style_radius(btn2, LV_RADIUS_CIRCLE, 0); /*Add a local style too*/

    label = lv_label_create(btn2);
    lv_label_set_text(label, "Button 2");
    lv_obj_center(label);

/* 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();

    /* USER CODE BEGIN SysInit */

    /* USER CODE END SysInit */

    /* Initialize all configured peripherals */
    MX_GPIO_Init();
    MX_SPI2_Init();
    MX_TIM6_Init();
    /* USER CODE BEGIN 2 */
// 清除定时器初始化过程中的更新中断标志，避免定时器一启动就中断
    __HAL_TIM_CLEAR_IT(&htim6, TIM_IT_UPDATE);
// 使能定时器6更新中断并启动定时器
    HAL_TIM_Base_Start_IT(&htim6);
    LCD_Init();
    lv_init();                  // lvgl初始化，如果这个没有初始化，那么下面的初始化会崩溃
    lv_port_disp_init();        // 显示器初始化
    lv_example_get_started_2(); // demo函数，显示2个按键，测试LVGL是否成功
    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while (1)
    
        /* USER CODE END WHILE */

        /* USER CODE BEGIN 3 */
//        LCD_Clear(WHITE);
//      HAL_Delay(1000);
//      LCD_Draw_Circle(50,50,45,RED);
//      HAL_Delay(1000);
//      LCD_Clear(RED);
//      HAL_Delay(1000);
//      Demo_Menu();
        lv_task_handler();    // 运行所有lvgl的timer
        if (cnt > 1000)
        
            cnt = 0;
            HAL_GPIO_TogglePin(GPIOE, GPIO_PIN_5);
        
    
    /* USER CODE END 3 */


/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)

    RCC_OscInitTypeDef RCC_OscInitStruct = 0;
    RCC_ClkInitTypeDef RCC_ClkInitStruct = 0;

    /** Initializes the RCC Oscillators according to the specified parameters
    * in the RCC_OscInitTypeDef structure.
    */
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
    RCC_OscInitStruct.HSEState = RCC_HSE_ON;
    RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
    RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
    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_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
    
        Error_Handler();
    


/* USER CODE BEGIN 4 */

/* 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 */

📚工程源码（包含LVGL 8.3库）

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提取码: w7ck