STM32F429移植TouchGFX到RT-Thread系统

目录：

0.STM32F429使用STM32CUBMX5.6移植touchGFX4.13
1.STM32F429移植touchGFX(一)——通过STM32CubeMX移植TouchGFX
2.STM32F429移植touchGFX(二)—— 使用MVP架构来实现GUI和硬件的双向交互
3.STM32F429移植TouchGFX到RT-Thread系统

实战：
3.STM32F767移植touchGFX—— 使用RT-Thread系统实现DIY数字仪表（正在进行）
4.STM32H747移植touchGFX—— 基于RT-Thread物联网系统实现AI图像识别（计划进行）

实验平台：

硬件： 野火挑战者STM32F429 V1开发版，5寸屏
软件： 最新版本的STM32CubeF4固件库，TouchGFXDesigner v4.13和 STM32CubeMX v5.6.1，开发环境MDK v5.29

实验前准备工作：

1.准备一套STM32F429开发版，和下载工具
2.下载 TouchGFXDesigner v4.13
压缩包下载完后，解压如下：

Projects目录下有STM32H7B3I-DK的工程，可以用来参考。touchGFX Designer的PC端安装包在Utilities目录下，找到后并安装。
3.下载 STM32CubeMX v5.6.1
安装完STM32CubeMX v5.6.1版本后，还需要安装X_CUBE_TOUCHGFX软件包，安装路径如下：

4.下载 MDK v5.27以上版本

效果演示：

0d7235786fced5552aa3b1bd374b5697

代码下载：

代码持续更新中：github代码下载地址https://gitee.com/Aladdin-Wang/hellotouchGFX/blob/master/demo/1_STM32F429_TouchGFX_TouchGFX/rtthread_transplant.zip

联系作者：

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移植RT-Thread的BSP模板：

1.学习RT-Thread系统（学过的可以跳过此步骤）

• 通读RT-Thread系统官方学习文档，https://www.rt-thread.org/document/site/
• 快速了解RT-Thread系统的内核，设备、组件和软件包的使用方法，下载并安装Env开发工工具

2.移植BSP

1. 参考官方使用 Env 创建 RT-Thread 项目工程的教程
2. 选择 BSP
   获取 RT-Thread 源代码后需要根据自己手上的开发板型号找到对应的 BSP，我实验所使用的是野火的STM32F29 V1开发板，所以可以选择stm32f29-fire-challenger的DSP，在此DSP的基础上移植touchgfx，首先找到如下目录：…\rt-thread\bsp\stm32\stm32f429-fire-challenger。
3. 搭建项目框架
   打开 Env 工具进入 stm32f429-fire-challenger 目录，运行scons --dist 命令。使用此命令会在 stm32f429-fire-challenger目录下生成 dist 目录，这便是开发项目的目录结构，RT-Thread 源码位于项目文件夹内，仅包含stm32f429-fire-challenger 的 BSP，可以随意拷贝此 BSP 到任何目录下使用。
   进入dist目录下，把工程里面的 stm32f429-fire-challenger压缩包拷贝到你的项目目录下待使用。
4. 制作BSP
   也可以自己重新制作对应自己板子的DSP，可以参考官方教程

3.配置CubeMX_Config

打开…\board\CubeMX_Config\CubeMX_Config.ioc，由于bsp已经配置了很多外设，所以只需要修改部分配置就可以了

1. 打开CRC
2. 重新配置LTCD
   
   
3. 打开freertos
   
4. 打开Touchgfx
   
5. 配置Touchgfx
   
6. 配置SPI_FLASH管脚
   
7. 生成工程
8. 通过TouchGFX 4.13.0 Designer打开ApplicationTemplate.touchgfx.part
   
9. 配置TouchGFX UI，创建三个页面
   
   
   

4.更改操作系统的接口文件

拷贝OSWrappers.cpp，重命名为OSWrappers_RTT.cpp文件

更改代码

/**
  ******************************************************************************
  * File Name          : OSWrappers.cpp
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under Ultimate Liberty license
  * SLA0044, the "License"; You may not use this file except in compliance with
  * the License. You may obtain a copy of the License at:
  *                             www.st.com/SLA0044
  *
  ******************************************************************************
  */
#include <touchgfx/hal/OSWrappers.hpp>
#include <stm32f4xx_hal.h>
#include <touchgfx/hal/GPIO.hpp>
#include <touchgfx/hal/HAL.hpp>
#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>

static rt_sem_t frame_buffer_sem;
static rt_mq_t vsync_q = 0;
using namespace touchgfx;

// Just a dummy value to insert in the VSYNC queue.
static uint8_t dummy = 0x5a;

/*
 * Initialize frame buffer semaphore and queue/mutex for VSYNC signal.
 */
void OSWrappers::initialize()
{

	  frame_buffer_sem = rt_sem_create("gfx_sem", 1, RT_IPC_FLAG_PRIO);
    // Create a queue of length 1
    vsync_q = rt_mq_create("gfx_mq", 1, 1, RT_IPC_FLAG_PRIO);

}

/*
 * Take the frame buffer semaphore. Blocks until semaphore is available.
 */
void OSWrappers::takeFrameBufferSemaphore()
{
     rt_sem_take(frame_buffer_sem, RT_WAITING_FOREVER);
}

/*
 * Release the frame buffer semaphore.
 */
void OSWrappers::giveFrameBufferSemaphore()
{
    rt_sem_release(frame_buffer_sem);
}

/*
 * Attempt to obtain the frame buffer semaphore. If semaphore is not available, do
 * nothing.
 *
 * Note must return immediately! This function does not care who has the taken the semaphore,
 * it only serves to make sure that the semaphore is taken by someone.
 */
void OSWrappers::tryTakeFrameBufferSemaphore()
{
    rt_sem_trytake(frame_buffer_sem);
}

/*
 * Release the frame buffer semaphore in a way that is safe in interrupt context. Called
 * from ISR.
 *
 * Release the frame buffer semaphore in a way that is safe in interrupt context.
 * Called from ISR.
 */
void OSWrappers::giveFrameBufferSemaphoreFromISR()
{
    // Since this is called from an interrupt, FreeRTOS requires special handling to trigger a
    // re-scheduling. May be applicable for other OSes as well.
		rt_sem_release(frame_buffer_sem);
}

/*
 * Signal that a VSYNC has occurred. Should make the vsync queue/mutex available.
 *
 * Note This function is called from an ISR, and should (depending on OS) trigger a
 * scheduling.
 */
void OSWrappers::signalVSync()
{
    if (vsync_q)
    {
        rt_mq_send(vsync_q, &dummy, 1);
    }
}

/*
 * This function blocks until a VSYNC occurs.
 *
 * Note This function must first clear the mutex/queue and then wait for the next one to
 * occur.
 */
void OSWrappers::waitForVSync()
{
    // First make sure the queue is empty, by trying to remove an element with 0 timeout.
    rt_mq_recv(vsync_q, &dummy, 1, 0);

    // Then, wait for next VSYNC to occur.
    rt_mq_recv(vsync_q, &dummy, 1, RT_WAITING_FOREVER);
}

/*
 * A function that causes executing task to sleep for a number of milliseconds.
 *
 * A function that causes executing task to sleep for a number of milliseconds.
 * This function is OPTIONAL. It is only used by the TouchGFX in the case of
 * a specific frame refresh strategy (REFRESH_STRATEGY_OPTIM_SINGLE_BUFFER_TFT_CTRL).
 * Due to backwards compatibility, in order for this function to be useable by the HAL
 * the function must be explicitly registered:
 * hal.registerTaskDelayFunction(&OSWrappers::taskDelay)
 *
 * see HAL::setFrameRefreshStrategy(FrameRefreshStrategy s)
 * see HAL::registerTaskDelayFunction(void (*delayF)(uint16_t))
 */
void OSWrappers::taskDelay(uint16_t ms)
{
     rt_thread_mdelay(ms);
}
static rt_base_t IdleTaskHook(void* p)
{
    if ((int)p) //idle task sched out
    {
        touchgfx::HAL::getInstance()->setMCUActive(true);
    }
    else //idle task sched in
    {
        touchgfx::HAL::getInstance()->setMCUActive(false);
    }
    return RT_TRUE;
}

// FreeRTOS specific handlers
extern "C"
{
    void vApplication*Hook(rt_thread_t xTask,
                                       signed char* pcTaskName)
    {
        while (1);
    }

    void vApplicationMallocFailedHook(rt_thread_t xTask,
                                      signed char* pcTaskName)
    {
        while (1);
    }

    void vApplicationIdleHook(void)
    {
        // Set task tag in order to have the "IdleTaskHook" function called when the idle task is
        // switched in/out. Used solely for measuring MCU load, and can be removed if MCU load
        // readout is not needed.
        //vTaskSetApplicationTaskTag(NULL, IdleTaskHook);
    }
}
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

5.新建touchgfx的应用例程文件

拷贝main.c的部分外设初始化代码到sample_touchgfx.c，示例代码如下：

#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>
#include "app_touchgfx.h"

CRC_HandleTypeDef hcrc;

DMA2D_HandleTypeDef hdma2d;

LTDC_HandleTypeDef hltdc;

static void MX_CRC_Init(void);
static void MX_DMA2D_Init(void);
static void MX_LTDC_Init(void);

#define DISP_Pin    GET_PIN(D, 4)
#define CTDL_BL_Pin GET_PIN(D, 7)
#define WIFI_Pin    GET_PIN(G, 9)//野火开发板使用LCD需要关闭WIFI电源

/**
  * @brief This function handles LTDC global interrupt.
  */
void LTDC_IRQHandler(void)
{
  /* USER CODE BEGIN LTDC_IRQn 0 */

  /* USER CODE END LTDC_IRQn 0 */
  HAL_LTDC_IRQHandler(&hltdc);
  /* USER CODE BEGIN LTDC_IRQn 1 */

  /* USER CODE END LTDC_IRQn 1 */
}

/**
  * @brief This function handles DMA2D global interrupt.
  */
void DMA2D_IRQHandler(void)
{
  /* USER CODE BEGIN DMA2D_IRQn 0 */

  /* USER CODE END DMA2D_IRQn 0 */
  HAL_DMA2D_IRQHandler(&hdma2d);
  /* USER CODE BEGIN DMA2D_IRQn 1 */

  /* USER CODE END DMA2D_IRQn 1 */
}
/**
  * @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;
  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_M2M;
  hdma2d.Init.ColorMode = DMA2D_OUTPUT_ARGB8888;
  hdma2d.Init.OutputOffset = 0;
  hdma2d.LayerCfg[1].InputOffset = 0;
  hdma2d.LayerCfg[1].InputColorMode = DMA2D_INPUT_ARGB8888;
  hdma2d.LayerCfg[1].AlphaMode = DMA2D_NO_MODIF_ALPHA;
  hdma2d.LayerCfg[1].InputAlpha = 0;
  if (HAL_DMA2D_Init(&hdma2d) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_DMA2D_ConfigLayer(&hdma2d, 1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN DMA2D_Init 2 */

  /* USER CODE END DMA2D_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 = 0;
  hltdc.Init.VerticalSync = 0;
  hltdc.Init.AccumulatedHBP = 46;
  hltdc.Init.AccumulatedVBP = 23;
  hltdc.Init.AccumulatedActiveW = 846;
  hltdc.Init.AccumulatedActiveH = 503;
  hltdc.Init.TotalWidth = 866;
  hltdc.Init.TotalHeigh = 525;
  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 = 0xd0000000;
  pLayerCfg.ImageWidth = 800;
  pLayerCfg.ImageHeight = 480;
  pLayerCfg.Backcolor.Blue = 255;
  pLayerCfg.Backcolor.Green = 255;
  pLayerCfg.Backcolor.Red = 255;
  if (HAL_LTDC_ConfigLayer(&hltdc, &pLayerCfg, 0) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN LTDC_Init 2 */
    rt_pin_mode(DISP_Pin, PIN_MODE_OUTPUT);
    rt_pin_mode(CTDL_BL_Pin, PIN_MODE_OUTPUT);
    rt_pin_mode(WIFI_Pin, PIN_MODE_OUTPUT);
    rt_pin_write(DISP_Pin, 1);
    rt_pin_write(CTDL_BL_Pin, 1);
    rt_pin_write(WIFI_Pin, 0);
  /* USER CODE END LTDC_Init 2 */

}
void touchgfx_thread_entry(void *parameter)
{
    MX_CRC_Init();
    MX_DMA2D_Init();
    MX_LTDC_Init();
	MX_TouchGFX_Init();
	MX_TouchGFX_Process();
	for(;;)
	{
		rt_thread_mdelay(100);
	}
}
int TouchGFXTask(void)
{
	rt_thread_t tid = NULL;
	tid = rt_thread_create("TouchGFX",
							touchgfx_thread_entry, RT_NULL,
							4096, 15, 20);
	
   if (tid != RT_NULL)
        rt_thread_startup(tid);
   else
        return -1;

    return RT_EOK;
}
INIT_APP_EXPORT(TouchGFXTask);

6.编辑 board/KConfig

7.编辑 board/SConscript

8.新建 board/CubeMX_Config/SConscript

import os
import rtconfig
from building import *

cwd = GetCurrentDir()

# add general drivers
src = Split('''
Src/sample_touchgfx.c
Src/OSWrappers_RTT.cpp
Src/STM32DMA.cpp
Src/STM32TouchController.cpp
Src/TouchGFXGPIO.cpp
Src/TouchGFXConfiguration.cpp
Src/TouchGFXGeneratedHAL.cpp
Src/TouchGFXHAL.cpp
Src/app_touchgfx.c
''')

path =  [cwd + '/Src']
path += [cwd + '/Middlewares/ST/touchgfx/framework/include']


if rtconfig.CROSS_TOOL == 'gcc':
    src += [cwd + '/Middlewares/ST/touchgfx/lib/core/cortex_m4f/gcc/libtouchgfx.a']
elif rtconfig.CROSS_TOOL == 'keil':
    src += [cwd + '/Middlewares/ST/touchgfx/lib/core/cortex_m4f/Keil/touchgfx_core.lib']
elif rtconfig.CROSS_TOOL == 'iar':
    src += [cwd + '/Middlewares/ST/touchgfx/lib/core/cortex_m4f/IAR8.x/touchgfx_core.a']

group = DefineGroup('TouchGFX_app', src, depend = [''], CPPPATH = path)

# add TouchGFX generated
genSrc = Glob('./Src/generated/fonts/src/*.cpp')
genSrc += Glob('./Src/generated/gui_generated/src/*/*.cpp')
genSrc += Glob('./Src/generated/images/src/*.cpp')
genSrc += Glob('./Src/generated/texts/src/*.cpp')

genPath = [cwd + '/Src/generated/fonts/include']
genPath += [cwd + '/Src/generated/gui_generated/include']
genPath += [cwd + '/Src/generated/images/include']
genPath += [cwd + '/Src/generated/texts/include']

group = group + DefineGroup('TouchGFX_generated', genSrc, depend = [''], CPPPATH = genPath)

# add TouchGFX resource
resSrc = Glob('./Src/generated/images/src/*/*.cpp')

group = group + DefineGroup('TouchGFX_resource', resSrc, depend = [''])

# add TouchGFX gui
guiSrc = Glob('./Src/gui/src/*/*.cpp')
guiPath = [cwd + '/Src/gui/include']

group = group + DefineGroup('TouchGFX_gui', guiSrc, depend = [''], CPPPATH = guiPath)

Return('group')

9.编辑libraries/STM32F4xx_HAL/SConscript

添加如下代码：

if GetDepend(['BSP_USING_TouchGFX']):
    src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_ltdc.c']
    src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_ltdc_ex.c']
    src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma2d.c']
    src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_dma2d.c']
    src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dsi.c']
    

10.配置 Menuconfig

11.生成工程

使用scons --target=mdk5 命令生成 MDK工程。此时还不能编译下载，因为图片资源太大，会超过内部flash的存储空间，还需要把图片下载到外部flash，上电初始化通过spi把图片资源加载到SDRAM。

12.添加FAL软件包

配置fal_cfg.h,
tgfx分区用于touchgfx的资源存储，其他分区用于OTA、文件系统和系统参数配置。

/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2018-05-17     armink       the first version
 */

#ifndef _FAL_CFG_H_
#define _FAL_CFG_H_

#include <rtconfig.h>
#include <board.h>

#define FLASH_SIZE_GRANULARITY_16K   (4 * 16 * 1024)
#define FLASH_SIZE_GRANULARITY_64K   (64 * 1024)
#define FLASH_SIZE_GRANULARITY_128K  (7 * 128 * 1024)

#define STM32_FLASH_START_ADRESS_16K  STM32_FLASH_START_ADRESS
#define STM32_FLASH_START_ADRESS_64K  (STM32_FLASH_START_ADRESS_16K + FLASH_SIZE_GRANULARITY_16K)
#define STM32_FLASH_START_ADRESS_128K (STM32_FLASH_START_ADRESS_64K + FLASH_SIZE_GRANULARITY_64K)



/* ===================== Flash device Configuration ========================= */
extern const struct fal_flash_dev stm32_onchip_flash_16k;
extern const struct fal_flash_dev stm32_onchip_flash_64k;
extern const struct fal_flash_dev stm32_onchip_flash_128k;
extern struct fal_flash_dev nor_flash0;

/* flash device table */
#define FAL_FLASH_DEV_TABLE                                          \
{                                                                    \
    &stm32_onchip_flash_16k,                                         \
    &stm32_onchip_flash_64k,                                         \
    &stm32_onchip_flash_128k,                                        \
    &nor_flash0,                                                     \
}
/* ====================== Partition Configuration ========================== */
#ifdef FAL_PART_HAS_TABLE_CFG
/* partition table */
#define FAL_PART_TABLE                                                               \
{                                                                                    \
    {FAL_PART_MAGIC_WROD, "bootloader", "onchip_flash_16k",  0 , FLASH_SIZE_GRANULARITY_16K , 0}, \
    {FAL_PART_MAGIC_WROD, "ef",         "onchip_flash_64k",  0 , FLASH_SIZE_GRANULARITY_64K , 0}, \
    {FAL_PART_MAGIC_WROD, "app",        "onchip_flash_128k", 0 , FLASH_SIZE_GRANULARITY_128K, 0}, \
    {FAL_PART_MAGIC_WROD, "tgfx",       "W25Q128",           0 , 4 * 1024 * 1024, 0}, \
    {FAL_PART_MAGIC_WROD, "download",   "W25Q128",           4 * 1024 * 1024 , 1024 * 1024, 0}, \
    {FAL_PART_MAGIC_WROD, "factory",    "W25Q128",          (4 * 1024 + 1024) * 1024 , 1024 * 1024, 0}, \
    {FAL_PART_MAGIC_WROD, "filesystem", "W25Q128",          (4 * 1024 + 1024 + 1024) * 1024 , 2 * 1024 * 1024, 0}, \
}
#endif /* FAL_PART_HAS_TABLE_CFG */

#endif /* _FAL_CFG_H_ */

13.配置SPI FLASH

1. 制作SPI FLASH下载算法工程
2. 修改工程模版template.uvprojx
   
3. 编辑链接文件
   
   4.将位图数据从外部flash复制到缓存
   
   
   此时重新生成 MDK工程，便可以下载到板子上运行。
   参考资料：https://support.touchgfx.com/docs/development/ui-development/scenarios/using-non-memory-mapped-flash

14.添加触摸软件包

配置模拟I2C

在applications文件夹下新建gtxx_ccollect.c文件，添加一下内容

/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2019-06-01     tyustli     the first version
 */

#include <rtthread.h>
#include "gt9147.h"
#define DBG_TAG "gt9147"
#define DBG_LVL DBG_LOG
#include <rtdbg.h>
#define THREAD_PRIORITY   5
#define THREAD_STACK_SIZE 1024
#define THREAD_TIMESLICE  5

#define GT9147_RST_PIN 59
#define GT9147_IRQ_PIN 61

static rt_thread_t  gt9147_thread = RT_NULL;
static rt_sem_t     gt9147_sem = RT_NULL;
static rt_device_t  dev = RT_NULL;
static struct       rt_touch_data *read_data;
static struct       rt_touch_info info;

struct rt_touch_data *read_coordinate(void)
{
	return &read_data[0];
}
static void gt9147_entry(void *parameter)
{
    rt_device_control(dev, RT_TOUCH_CTRL_GET_INFO, &info);

    read_data = (struct rt_touch_data *)rt_malloc(sizeof(struct rt_touch_data) * info.point_num);

    while (1)
    {
        rt_sem_take(gt9147_sem, RT_WAITING_FOREVER);

        if (rt_device_read(dev, 0, read_data, info.point_num) == info.point_num)
        {
            for (rt_uint8_t i = 0; i < info.point_num; i++)
            {
                if (read_data[i].event == RT_TOUCH_EVENT_DOWN || read_data[i].event == RT_TOUCH_EVENT_MOVE)
                {
                    LOG_D("%d %d %d %d %d\n", read_data[i].track_id,
                               read_data[i].x_coordinate,
                               read_data[i].y_coordinate,
                               read_data[i].timestamp,
                               read_data[i].width);
                }
				
            }
        }
        rt_device_control(dev, RT_TOUCH_CTRL_ENABLE_INT, RT_NULL);
    }
}

static rt_err_t rx_callback(rt_device_t dev, rt_size_t size)
{
    rt_sem_release(gt9147_sem);
    rt_device_control(dev, RT_TOUCH_CTRL_DISABLE_INT, RT_NULL);
    return 0;
}

static int rt_hw_gt9147_port(void)
{
    struct rt_touch_config config;
    rt_uint8_t rst;
    rst = GT9147_RST_PIN;
    config.dev_name = "i2c1";
    config.irq_pin.pin  = GT9147_IRQ_PIN;
    config.irq_pin.mode = PIN_MODE_INPUT_PULLDOWN;
    config.user_data = &rst;
    rt_hw_gt9147_init("gt", &config);
    return 0;
}
/* Test function */
int gt9147_init(void)
{
    void *id;
	rt_hw_gt9147_port();
    dev = rt_device_find("gt");
    if (dev == RT_NULL)
    {
        rt_kprintf("can't find device gt\n");
        return -1;
    }

    if (rt_device_open(dev, RT_DEVICE_FLAG_INT_RX) != RT_EOK)
    {
        rt_kprintf("open device failed!");
        return -1;
    }

    id = rt_malloc(sizeof(rt_uint8_t) * 8);
    rt_device_control(dev, RT_TOUCH_CTRL_GET_ID, id);
    rt_uint8_t * read_id = (rt_uint8_t *)id;
    rt_kprintf("id = %c %c %c %c \n", read_id[0], read_id[1], read_id[2], read_id[3]);
	
    rt_device_control(dev, RT_TOUCH_CTRL_GET_INFO, id);
    rt_kprintf("range_x = %d \n", (*(struct rt_touch_info*)id).range_x);
    rt_kprintf("range_y = %d \n", (*(struct rt_touch_info*)id).range_y);
    rt_kprintf("point_num = %d \n", (*(struct rt_touch_info*)id).point_num);
    rt_free(id);
    rt_device_set_rx_indicate(dev, rx_callback);
    gt9147_sem = rt_sem_create("dsem", 0, RT_IPC_FLAG_FIFO);

    if (gt9147_sem == RT_NULL)
    {
        rt_kprintf("create dynamic semaphore failed.\n");
        return -1;
    }

    gt9147_thread = rt_thread_create("gt9147",
                                     gt9147_entry,
                                     RT_NULL,
                                     THREAD_STACK_SIZE,
                                     THREAD_PRIORITY,
                                     THREAD_TIMESLICE);

    if (gt9147_thread != RT_NULL)
        rt_thread_startup(gt9147_thread);

    return 0;
}
INIT_APP_EXPORT(gt9147_init);

修改STM32TouchController.cpp

/**
  ******************************************************************************
  * File Name          : STM32TouchController.cpp
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under Ultimate Liberty license
  * SLA0044, the "License"; You may not use this file except in compliance with
  * the License. You may obtain a copy of the License at:
  *                             www.st.com/SLA0044
  *
  ******************************************************************************
  */

/* USER CODE BEGIN STM32TouchController */

#include <STM32TouchController.hpp>
#include "gt9147.h"
extern "C"
{
	struct rt_touch_data *read_coordinate(void);
}
void STM32TouchController::init()
{
    /**
     * Initialize touch controller and driver
     *
     */
}

bool STM32TouchController::sampleTouch(int32_t& x, int32_t& y)
{
    /**
     * By default sampleTouch returns false,
     * return true if a touch has been detected, otherwise false.
     *
     * Coordinates are passed to the caller by reference by x and y.
     *
     * This function is called by the TouchGFX framework.
     * By default sampleTouch is called every tick, this can be adjusted by HAL::setTouchSampleRate(int8_t);
     *
     */
	struct  rt_touch_data *read_data;
	read_data = read_coordinate();

	if (read_data->event == RT_TOUCH_EVENT_DOWN || read_data->event == RT_TOUCH_EVENT_MOVE)
	{
		x = read_data->x_coordinate;
	    y = read_data->y_coordinate;
		return true;
	}
	else
	{
		return false;
	}

}

/* USER CODE END STM32TouchController */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

15.让时钟动起来

打开rtc实时时钟

添加以下代码

16.让屏幕滑动起来

配置此缓存可以让屏幕滑动