【STM32H7S78-DK】四下载失败问题及解决、计数器实现及分析

damiaa 发表于 2024-11-3 11:23

<div class='showpostmsg'> 本帖最后由 damiaa 于 2024-11-4 08:30 编辑

<div><span style="font-size:20px;"><strong>         【STM32H7S78-DK】四下载失败问题及解决、计数器实现及分析</strong></span></div>

<div> </div>

<div> </div>

<div><a href="https://bbs.eeworld.com.cn/thread-1294069-1-1.html"><strong>【STM32H7S78-DK】一开箱贴</strong></a></div>

<div><a href="https://bbs.eeworld.com.cn/thread-1294071-1-1.html"><strong>【STM32H7S78-DK】二 touchgxf环境搭建和基本测试</strong></a></div>

<div><a href="https://bbs.eeworld.com.cn/thread-1294464-1-1.html"><strong>【STM32H7S78-DK】三 touchgxf和stm32cubeide和led按键测试</strong></a> <strong>之后</strong></div>

<div> </div>

<div><strong>一、在测试和调试一个计数器的程序的时候发现下载不行，查看是连接不上ST-link V3了如下：</strong></div>

<div><strong></strong></div>

<div><strong></strong></div>

<div><strong>但上次下的还是在显示屏上显示。</strong></div>

<div><strong></strong></div>

<div><strong> 使用</strong><strong>STM32CubeProgrammer</strong><strong>连接也是连接不上：</strong></div>

<div><strong></strong></div>

<div> </div>

<div><strong>发现这些问题后想想直接在复位时连接</strong><strong>stlink</strong><strong>接口IO，看行不行，如是还是用</strong><strong>STM32CubeProgrammer</strong><strong>连接同时按板子复位键。<span style="color:#27ae60;">连上了还能读和擦除。</span></strong></div>

<div><strong></strong></div>

<div><strong></strong></div>

<div> </div>

<div><strong>用同样的方法(在</strong><strong>touchgfx</strong><strong>下载程序时按复位)，</strong><span style="color:#27ae60;"><strong>touchgfx designer </strong><strong>下载</strong><strong>页可以</strong><strong>了，</strong></span></div>

<div><strong></strong></div>

<div> </div>

<div><strong>二、下面看看这个计数器的例子</strong></div>

<div> </div>

<div><strong>从箭头哪里两个点的地方进去可以编辑源代码</strong></div>

<div></div>

<div></div>

<div><strong>我们</strong><strong>一般关注</strong><strong>下面几个文件</strong></div>

<div></div>

<div><strong>MainViewBase.hpp和MainViewBase.cpp是</strong><strong>touchgfx</strong><strong> designer产生的文件，里面包含了基本的类和实现。</strong></div>

<div><strong>MainViewBase.hpp：</strong></div>

<div>
<pre>
<code class="language-cpp">/*********************************************************************************/
/********** THIS FILE IS GENERATED BY TOUCHGFX DESIGNER, DO NOT MODIFY ***********/
/*********************************************************************************/
#ifndef MAINVIEWBASE_HPP
#define MAINVIEWBASE_HPP

#include <gui/common/FrontendApplication.hpp>
#include <mvp/View.hpp>
#include <gui/main_screen/MainPresenter.hpp>
#include <touchgfx/widgets/Box.hpp>
#include <touchgfx/widgets/Image.hpp>
#include <touchgfx/widgets/TextAreaWithWildcard.hpp>
#include <touchgfx/widgets/Button.hpp>

class MainViewBase : public touchgfx::View<MainPresenter>
{
public:
MainViewBase();
virtual ~MainViewBase();
virtual void setupScreen();

/*
* Virtual Action Handlers
*/
virtual void increaseValue()
{
   // Override and implement this function in Main
}
virtual void decreaseValue()
{
   // Override and implement this function in Main
}

protected:
FrontendApplication& application() {
   return *static_cast<FrontendApplication*>(touchgfx::Application::getInstance());
}

/*
* Member Declarations
*/
touchgfx::Box __background;
touchgfx::Image backgroundImage;
touchgfx::Image counterBackgroundImage;
touchgfx::TextAreaWithOneWildcard countTxt;
touchgfx::Button buttonUp;
touchgfx::Button buttonDown;

/*
* Wildcard Buffers
*/
static const uint16_t COUNTTXT_SIZE = 5;
touchgfx::Unicode::UnicodeChar countTxtBuffer;

private:

/*
* Callback Declarations
*/
touchgfx::Callback<MainViewBase, const touchgfx::AbstractButton&> buttonCallback;

/*
* Callback Handler Declarations
*/
void buttonCallbackHandler(const touchgfx::AbstractButton& src);

};

#endif // MAINVIEWBASE_HPP</code></pre>

<p> </p>

<p><strong>MainViewBase.cpp</strong></p>

<pre>
<code class="language-cpp">/*********************************************************************************/
/********** THIS FILE IS GENERATED BY TOUCHGFX DESIGNER, DO NOT MODIFY ***********/
/*********************************************************************************/
#include <gui_generated/main_screen/MainViewBase.hpp>
#include <touchgfx/Color.hpp>
#include <images/BitmapDatabase.hpp>
#include <texts/TextKeysAndLanguages.hpp>

MainViewBase::MainViewBase() :
buttonCallback(this, &MainViewBase::buttonCallbackHandler)
{
__background.setPosition(0, 0, 800, 480);
__background.setColor(touchgfx::Color::getColorFromRGB(0, 0, 0));
add(__background);

backgroundImage.setXY(150, 120);
backgroundImage.setBitmap(touchgfx::Bitmap(BITMAP_BG_ID));
add(backgroundImage);

counterBackgroundImage.setXY(400, 152);
counterBackgroundImage.setBitmap(touchgfx::Bitmap(BITMAP_COUNTER_BOX_ID));
add(counterBackgroundImage);

countTxt.setPosition(316, 189, 302, 104);
countTxt.setColor(touchgfx::Color::getColorFromRGB(255, 255, 255));
countTxt.setLinespacing(4);
Unicode::snprintf(countTxtBuffer, COUNTTXT_SIZE, "%s", touchgfx::TypedText(T___SINGLEUSE_XERM).getText());
countTxt.setWildcard(countTxtBuffer);
countTxt.setTypedText(touchgfx::TypedText(T_TEXTID1));
add(countTxt);

buttonUp.setXY(169, 173);
buttonUp.setBitmaps(touchgfx::Bitmap(BITMAP_UP_BTN_ID), touchgfx::Bitmap(BITMAP_UP_BTN_PRESSED_ID));
buttonUp.setAction(buttonCallback);
add(buttonUp);

buttonDown.setXY(169, 265);
buttonDown.setBitmaps(touchgfx::Bitmap(BITMAP_DOWN_BTN_ID), touchgfx::Bitmap(BITMAP_DOWN_BTN_PRESSED_ID));
buttonDown.setAction(buttonCallback);
add(buttonDown);
}

MainViewBase::~MainViewBase()
{

}

void MainViewBase::setupScreen()
{

}

void MainViewBase::buttonCallbackHandler(const touchgfx::AbstractButton& src)
{
if (&src == &buttonUp)
{
   //IncreaseValue
   //When buttonUp clicked call virtual function
   //Call increaseValue
   increaseValue();
}
if (&src == &buttonDown)
{
   //DecreaseValue
   //When buttonDown clicked call virtual function
   //Call decreaseValue
   decreaseValue();
}
}
</code></pre>

<p> </p>
</div>

<div><strong>MainView.hpp和MainView.cpp是</strong><strong>touchgfx</strong><strong> designer产生的文件，里面包含了用户可以修改的类和实现，是继承了上面两个文件里面实现的基类。</strong></div>

<div><strong>MainView.hpp:</strong></div>

<div>
<pre>
<code class="language-cpp">#ifndef MAIN_VIEW_HPP
#define MAIN_VIEW_HPP

#include <gui_generated/main_screen/MainViewBase.hpp>
#include <gui/main_screen/MainPresenter.hpp>

class MainView : public MainViewBase
{
public:
MainView();
~MainView() {};
virtual void setupScreen();
virtual void increaseValue();
virtual void decreaseValue();

void updateGFXElements();
protected:

private:
uint32_t count;
};

#endif // MAIN_VIEW_HPP</code></pre>

<p><strong>MainView.cpp:</strong></p>

<pre>
<code class="language-cpp">#include <gui/main_screen/MainView.hpp>
#include "BitmapDatabase.hpp"

const uint32_t UPPER_LIMIT = 9999;
const uint32_t LOWER_LIMIT = 0;

MainView::MainView() : count(0) {}

void MainView::setupScreen()
{
updateGFXElements();
}

void MainView::increaseValue()
{
count = (count++ > UPPER_LIMIT) ? UPPER_LIMIT : count;
updateGFXElements();
}

void MainView::decreaseValue()
{
count = (count-- <= LOWER_LIMIT) ? LOWER_LIMIT : count;
updateGFXElements();
}

void MainView::updateGFXElements()
{
//Counter text area GFX uptade.
Unicode::snprintf(countTxtBuffer, 5, "%d", count);
//Button GFX update and touchable.
if (count < UPPER_LIMIT)
{
   buttonUp.setBitmaps(Bitmap(BITMAP_UP_BTN_ID), Bitmap(BITMAP_UP_BTN_PRESSED_ID));
   buttonUp.setTouchable(true);
}
else
{
   buttonUp.setBitmaps(Bitmap(BITMAP_UP_BTN_DISABLED_ID), Bitmap(BITMAP_UP_BTN_DISABLED_ID));
   buttonUp.setTouchable(false);
}
if (count > LOWER_LIMIT)
{
   buttonDown.setBitmaps(Bitmap(BITMAP_DOWN_BTN_ID), Bitmap(BITMAP_DOWN_BTN_PRESSED_ID));
   buttonDown.setTouchable(true);
}
else
{
   buttonDown.setBitmaps(Bitmap(BITMAP_DOWN_BTN_DISABLED_ID), Bitmap(BITMAP_DOWN_BTN_DISABLED_ID));
   buttonDown.setTouchable(false);
}
// Invalidate all GFX area, which will result in it being redrawn in next tick.
countTxt.invalidate();
buttonUp.invalidate();
buttonDown.invalidate();
}</code></pre>

<p> </p>
</div>

<div> </div>

<div><strong>为了把显示放的位置放到中间并且显示数字可以9999以下，修改了几个地方</strong></div>

<div><strong>1,MainviewBase.hpp的基类中修改了这里，目的是把缓冲区变大，能存5个字节：（这个文件一般用户代码不怎么修改一般由</strong><strong>touchgfx</strong><strong> designer修改，但我这里是借用的例子，就直接修改了）</strong></div>

<div></div>

<div><strong>2，</strong><strong>修改下面MainviewBase.cpp</strong></div>

<div></div>

<div><strong>3，修改Mainview.hpp的uint8_t count</strong><strong> uint32_t count</strong></div>

<div></div>

<div><strong>4,修改Mainview.cpp</strong><strong>的UPPER_LIMIT为9999</strong></div>

<div></div>

<div> </div>

<div><strong>5，代码浅释：</strong></div>

<div><strong>Mainview.hpp中定义了继承于</strong><strong>MainViewBase</strong> <strong>的</strong><strong>MainView</strong> <strong>类</strong></div>

<div><strong>主要定义了虚函数设置屏幕、值加减、和图片更新函数和变量count</strong></div>

<div><strong>class </strong><strong>MainView</strong><strong> :</strong><strong> public </strong><strong>MainViewBase</strong></div>

<div><strong>{</strong></div>

<div><strong>public:</strong></div>

<div>    <strong>MainView</strong><strong>(</strong><strong>);</strong></div>

<div><strong>    ~</strong><strong>MainView</strong><strong>(</strong><strong>) {};</strong></div>

<div><strong>    virtual void </strong><strong>setupScreen</strong><strong>(</strong><strong>);</strong></div>

<div><strong>    virtual void </strong><strong>increaseValue</strong><strong>(</strong><strong>);</strong></div>

<div><strong>    virtual void </strong><strong>decreaseValue</strong><strong>(</strong><strong>);</strong></div>

<div><strong>    void </strong><strong>updateGFXElements</strong><strong>(</strong><strong>);</strong></div>

<div><strong>protected:</strong></div>

<div><strong>private:</strong></div>

<div><strong>    uint32_t count;</strong></div>

<div><strong>};</strong></div>

<div> </div>

<div><strong>Mainview.cpp中定义了这些函数的实现</strong></div>

<div><strong>increaseValue</strong><strong>()</strong><strong>和</strong><strong>decreaseValue</strong><strong>()</strong><strong>分别实现加数和减数，并且调用</strong><strong>updateGFXElements</strong><strong>();</strong><strong>进行界面数据和按键背景更新。</strong></div>

<div> </div>

<div><strong>界面设置中对显示</strong><strong>countTxt</strong><strong>的页面进行了下面的设置</strong></div>

<div></div>

<div><strong>所以在</strong><strong>updateGFXElements</strong><strong>()</strong><strong>函数中使用</strong></div>

<div><strong>Unicode::</strong><strong>snprintf</strong><strong>(</strong><strong>countTxtBuffer</strong><strong>, 5, "%d", count);</strong></div>

<div><strong>能对</strong><strong>countTxt</strong><strong>的内容进行更新</strong></div>

<div><strong>updateGFXElements</strong><strong>()</strong><strong>函数页对数值</strong><strong>的大小进行了限制，而且重新设置了按键的背景图片。</strong></div>

<div><strong>最后让</strong><strong>countTxt</strong><strong>和</strong><strong>buttonUp</strong><strong>和</strong><strong>buttonDown</strong><strong>失效，这样就能实现重画而更新界面。</strong></div>

<div> </div>

<div><strong>count实现count变量的初始化。</strong></div>

<div>  </div>

<div>
<div style="text-align: center;"></div>

<p> </p>
</div>

<div> </div>

<div><strong>好，先分析到这里</strong><strong>。</strong></div>

<div><strong>                                                                                    谢谢</strong></div>

<p></p>
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【STM32H7S78-DK】 四 下载失败问题及解决、计数器实现及分析

【STM32H7S78-DK】四下载失败问题及解决、计数器实现及分析