ART-PI移植touchGFX详细教程（基于正点原子7寸屏）

一、下载ART-PI支持包

二、新建工程

等待项目创建完成

三、打开组件

1、C++

2、软件模拟IIC

3、IIC配置

4、使能touchGFX

5、添加触摸芯片支持包

5、保存工程

四、配置工程

选择三项，然后点击应用并关闭

五、配置touchGFX

1、打开touchGFX路径

2、用记事本打开这个文件

3、修改屏幕尺寸和touchGFX版本

六、配置lcd参数

1、修改lcd参数

#define LCD_WIDTH           1024
#define LCD_HEIGHT          600
#define LCD_BITS_PER_PIXEL  24
#define LCD_BUF_SIZE        (LCD_WIDTH * LCD_HEIGHT * LCD_BITS_PER_PIXEL / 8)
#define LCD_PIXEL_FORMAT    RTGRAPHIC_PIXEL_FORMAT_RGB888

#define LCD_HSYNC_WIDTH     20
#define LCD_VSYNC_HEIGHT    3
#define LCD_HBP             140
#define LCD_VBP             20
#define LCD_HFP             160
#define LCD_VFP             12
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2、打开CRC和DMA2D

七、使用touchGFX Designer编译工程

1、使用touchGFX designer打开工程

双击这个文件

2、生成代码并运行仿真器

3、等待仿真器运行

八、编译工程，并修改错误

1、编译工程

2、错误修改

1、../packages/ft5426-latest/src/ft5426.c:77:12: error: unknown type name 'uint16_t'

将uint16_t改为rt_uint16_t

2、undefined reference to touchgfx::paint::rgb888::lineFromColor(unsigned char*, unsigned int, unsigned long, unsigned char)'`

D:\RT-ThreadStudio\workspace\ART\libraries\touchgfx_lib\Middlewares\ST\touchgfx\lib\core\cortex_m7\gcc\libtouchgfx-float-abi-hard.a(PainterRGB888.o): In function `touchgfx::PainterRGB888::paint(unsigned char*, short, short, short, short, unsigned char) const':
(.text._ZNK8touchgfx13PainterRGB8885paintEPhssssh+0x18): undefined reference to `touchgfx::paint::rgb888::lineFromColor(unsigned char*, unsigned int, unsigned long, unsigned char)'
D:\RT-ThreadStudio\workspace\ART\libraries\touchgfx_lib\Middlewares\ST\touchgfx\lib\core\cortex_m7\gcc\libtouchgfx-float-abi-hard.a(PainterRGB888.o): In function `touchgfx::PainterRGB888::tearDown() const':
(.text._ZNK8touchgfx13PainterRGB8888tearDownEv+0x0): undefined reference to `touchgfx::paint::rgb888::tearDown()'
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a、全局搜索`lineFromColor

b、将hal文件夹和PainterRGB888.cpp添加构建

c、在PainterRGB888.hpp中添加头文件

#include 
#include 
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九、编译工程，并下载

十、添加触摸

1、在sample_touchgfx.c里面添加初始化

#ifdef PKG_USING_FT5426
#include "ft5426.h"
int rt_hw_ft5426_port(void)
{
    struct rt_touch_config config;
    config.dev_name = "i2c1";
    rt_hw_ft5426_init("ft5426", &config);
    return 0;
}
INIT_ENV_EXPORT(rt_hw_ft5426_port);
#endif
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2、修改STM32TouchController.cpp

下面是整个文件

/**
  ******************************************************************************
  * File Name          : STM32TouchController.cpp
  ******************************************************************************
  * @attention
  *
  * 
© Copyright (c) 2020 STMicroelectronics.
  * All rights reserved.
  *
  * 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 
#include 

#ifdef PKG_USING_GT9147
#include "gt9147.h"
static rt_device_t  dev = RT_NULL;
static struct       rt_touch_data *read_data = NULL;
static struct       rt_touch_info info;


int gt9147_init(void)
{
    void *id;
    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;
    }
    read_data = (struct rt_touch_data *)rt_malloc(sizeof(struct rt_touch_data) * info.point_num);
    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, &info);
    rt_kprintf("range_x = %d \n", info.range_x);
    rt_kprintf("range_y = %d \n", info.range_y);
    rt_kprintf("point_num = %d \n", info.point_num);

    rt_free(id);

    return 0;
}
#endif
#ifdef PKG_USING_FT5426

#ifdef __cplusplus
extern "C"{
#endif

#include "ft5426.h"
#include "touch.h"

#ifdef __cplusplus
}
#endif

static rt_device_t  dev = RT_NULL;
static struct       rt_touch_data *read_data = NULL;
static struct       rt_touch_info info;


int ft5426_init(void)
{
    void *id;

//    //same init include sample_touchgfx.c
//    struct rt_touch_config cfg;
//    cfg.dev_name = "i2c1";
//    rt_hw_ft5426_init("ft5426", &cfg);

    dev = rt_device_find("ft5426");
    if (dev == RT_NULL)
    {
        rt_kprintf("can't find device ft5426\n");
        return -1;
    }

    if (rt_device_open(dev, RT_DEVICE_FLAG_RDONLY) != RT_EOK)
    {
        rt_kprintf("open device failed!");
        return -1;
    }
    read_data = (struct rt_touch_data *)rt_malloc(sizeof(struct rt_touch_data) * info.point_num);
    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, &info);
    rt_kprintf("range_x = %d \n", info.range_x);
    rt_kprintf("range_y = %d \n", info.range_y);
    rt_kprintf("point_num = %d \n", info.point_num);

    rt_free(id);

    return 0;
}

#endif

void STM32TouchController::init()
{
    /**
     * Initialize touch controller and driver
     *
     */
#ifdef PKG_USING_GT9147
    gt9147_init();
#endif

#ifdef PKG_USING_FT5426
    ft5426_init();
#endif

}

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);
     *
     */
    #ifdef PKG_USING_GT9147
    rt_device_read(dev, 0, read_data, info.point_num);
    if (read_data[0].event == RT_TOUCH_EVENT_DOWN || read_data[0].event == RT_TOUCH_EVENT_MOVE)
    {
        x = 800 - read_data[0].x_coordinate;
        y = 480 - read_data[0].y_coordinate;
        return true;
    }
    else
    #endif
    #ifdef PKG_USING_FT5426
        rt_device_read(dev, 0, read_data, info.point_num);
        if (read_data[0].event == RT_TOUCH_EVENT_DOWN || read_data[0].event == RT_TOUCH_EVENT_MOVE)
        {
            y = read_data[0].x_coordinate;
            x = read_data[0].y_coordinate;
            //rt_kprintf("down x: %03d y: %03d\n", x, y);
            return true;
        }
        else
    #endif

    {
        return false;
    }
}

/* USER CODE END STM32TouchController */

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

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