RT-Thread使用-----TouchGfx（6)----屏幕控制LED

        本文以一个实例进行触摸屏幕按钮实现开发板LED灯亮灭的操作。不进行详细原理讲解，只进行演示操作。

        参考文档：stm32 TouchGFX基础教程（十四）触控点亮LED_dejun_qiu的博客-优快云博客_stm32 touchgfx

1、TouchGfx工程修改

        在上一讲的工程基础上对屏幕内容进行修改。修改为如下信息。

        更新控件为BUTTON WITH LABEL，名称定义为Btn_On，Text显示为LED_ON

 添加交互函数

 2、文件修改

        修改Screen1View相关文件

#include <gui/screen1_screen/Screen1View.hpp>

Screen1View::Screen1View()
{

}

void Screen1View::setupScreen()
{
    Screen1ViewBase::setupScreen();
}

void Screen1View::tearDownScreen()
{
    Screen1ViewBase::tearDownScreen();
}

void Screen1View::Btn_OffClicked()
{
    presenter->Btn_OffClicked();
}

void Screen1View::Btn_OnClicked()
{
    presenter->Btn_OnClicked();
}

#ifndef SCREEN1VIEW_HPP
#define SCREEN1VIEW_HPP

#include <gui_generated/screen1_screen/Screen1ViewBase.hpp>
#include <gui/screen1_screen/Screen1Presenter.hpp>

class Screen1View : public Screen1ViewBase
{
public:
    Screen1View();
    virtual ~Screen1View() {}
    virtual void setupScreen();
    virtual void tearDownScreen();
protected:
    virtual void Btn_OnClicked();
    virtual void Btn_OffClicked();
};

#endif // SCREEN1VIEW_HPP

         修改Screen1Presenter相关文件

#include <gui/screen1_screen/Screen1View.hpp>
#include <gui/screen1_screen/Screen1Presenter.hpp>

Screen1Presenter::Screen1Presenter(Screen1View& v)
    : view(v)
{

}

void Screen1Presenter::activate()
{

}

void Screen1Presenter::deactivate()
{

}

void Screen1Presenter::Btn_OnClicked()
{
    model->LedOn();
}

void Screen1Presenter::Btn_OffClicked()
{
    model->LedOff();
}

#ifndef SCREEN1PRESENTER_HPP
#define SCREEN1PRESENTER_HPP

#include <gui/model/ModelListener.hpp>
#include <mvp/Presenter.hpp>

using namespace touchgfx;

class Screen1View;

class Screen1Presenter : public touchgfx::Presenter, public ModelListener
{
public:
    Screen1Presenter(Screen1View& v);

    /**
     * The activate function is called automatically when this screen is "switched in"
     * (ie. made active). Initialization logic can be placed here.
     */
    virtual void activate();

    /**
     * The deactivate function is called automatically when this screen is "switched out"
     * (ie. made inactive). Teardown functionality can be placed here.
     */
    virtual void deactivate();

    virtual ~Screen1Presenter() {};

    virtual void Btn_OnClicked();
    virtual void Btn_OffClicked();

private:
    Screen1Presenter();

    Screen1View& view;
};

#endif // SCREEN1PRESENTER_HPP

修改model

#include <gui/model/Model.hpp>
#include <gui/model/ModelListener.hpp>
#include <drv_common.h>
#include "rtdevice.h"

Model::Model() : modelListener(0)
{

}

void Model::tick()
{

}

#define LED0    GET_PIN(B, 0)
#define LED1    GET_PIN(B, 1)

void Model::LedOn()
{
    rt_pin_mode(LED0, PIN_MODE_OUTPUT);
    rt_pin_mode(LED1, PIN_MODE_OUTPUT);
    rt_pin_write(LED0, PIN_LOW);
    rt_pin_write(LED1, PIN_LOW);
}
void Model::LedOff()
{
    rt_pin_mode(LED0, PIN_MODE_OUTPUT);
    rt_pin_mode(LED1, PIN_MODE_OUTPUT);
    rt_pin_write(LED0, PIN_HIGH);
    rt_pin_write(LED1, PIN_HIGH);

}

#ifndef MODEL_HPP
#define MODEL_HPP

class ModelListener;

class Model
{
public:
    Model();

    void bind(ModelListener* listener)
    {
        modelListener = listener;
    }

    void tick();
    void LedOn();
    void LedOff();
protected:
    ModelListener* modelListener;
};

#endif // MODEL_HPP

 3、下载验证

        串口提示内容如下：

           屏幕按钮效果如下

LED_BTN