Fix: fix and improve touch driver for stm32f407-atk-explorer

[LinuxMint-User]

拉取/合并请求描述：(PR description)

[

为什么提交这份PR (why to submit this PR)

修复 stm32f407-atk-explorer BSP 中 TFTLCD 电阻触摸屏驱动无法正确传递 LVGL 触摸释放事件导致无法操作控件的问题，并优化了触摸驱动对 LVGL 中滑动控件的支持。

你的解决方案是什么 (what is your solution)

在XPT2046触摸驱动中添加完整的状态机管理和坐标优化算法：

1. 完整的事件状态机：

   • 添加触摸开始、移动、结束的完整状态跟踪
   • 正确发送LV_INDEV_STATE_PR（按下）和LV_INDEV_STATE_REL（释放）事件
   • 解决LVGL点击事件不触发的问题

2. 滑动体验优化：

   • 坐标平滑滤波：5点移动平均算法，减少电阻屏坐标跳动
   • 移动阈值检测：3像素移动阈值，智能区分点击和滑动操作
   • 去抖动处理：防止误触，提高触摸精度
   • 智能释放检测：连续5次（5ms）无触摸数据视为释放

3. 参数优化配置：

   #define HISTORY_SIZE 5                    // 历史坐标缓冲大小
   static const int DEBOUNCE_COUNT = 2;      // 按下去抖动次数
   static const int MIN_MOVE_DISTANCE = 3;   // 滑动检测阈值（像素）
   static const int SMOOTHING_FACTOR = 2;    // 坐标平滑插值因子

此方案不修改RT-Thread框架结构，保持向后兼容，仅优化触摸驱动内部算法。

请提供验证的bsp和config (provide the config and bsp)

• BSP: bsp/stm32/stm32f407-atk-explorer
• .config: 默认配置
  • 开启 Hardware Drivers Config -> Onboard Peripheral Drivers -> Enable ATK LCD
  • 开启 Hardware Drivers Config -> Onboard Peripheral Drivers -> Use LCD TOUCH (Default Res)
  • 开启 Hardware Drivers Config -> Onboard Peripheral Drivers -> Enable LVGL for LCD
  • 开启 Hardware Drivers Config -> Onboard Peripheral Drivers -> Enable LVGL demo
  • LVGL 版本为 8.3.11

验证结果：

1. ✅ LVGL日历DEMO正常显示，触摸交互正常
2. ✅ 按钮点击事件正确触发，有按下/释放视觉反馈
3. ✅ 滑动手势识别准确
   ]

当前拉取/合并请求的状态 Intent for your PR

必须选择一项 Choose one (Mandatory):

• 本拉取/合并请求是一个草稿版本 This PR is for a code-review and is intended to get feedback
• 本拉取/合并请求是一个成熟版本 This PR is mature, and ready to be integrated into the repo

代码质量 Code Quality：

我在这个拉取/合并请求中已经考虑了 As part of this pull request, I've considered the following:

• 已经仔细查看过代码改动的对比 Already check the difference between PR and old code
• 代码风格正确，包括缩进空格，命名及其他风格 Style guide is adhered to, including spacing, naming and other styles
• 没有垃圾代码，代码尽量精简，不包含#if 0代码，不包含已经被注释了的代码 All redundant code is removed and cleaned up
• 所有变更均有原因及合理的，并且不会影响到其他软件组件代码或BSP All modifications are justified and not affect other components or BSP
• 对难懂代码均提供对应的注释 I've commented appropriately where code is tricky
• 代码是高质量的 Code in this PR is of high quality
• 已经使用formatting 等源码格式化工具确保格式符合RT-Thread代码规范 This PR complies with RT-Thread code specification
• 如果是新增bsp, 已经添加ci检查到.github/ALL_BSP_COMPILE.json 详细请参考链接BSP自查

[github-actions]

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If you have any questions, feel free to reach out. Thanks again for your contribution!

[github-actions]

📌 Code Review Assignment

🏷️ Tag: bsp_stm32

Reviewers: Liang1795 hamburger-os wdfk-prog

Changed Files (Click to expand)

• bsp/stm32/stm32f407-atk-explorer/.ci/attachconfig/onboard-lcd-touch.attach
• bsp/stm32/stm32f407-atk-explorer/board/ports/touch/drv_touch_xpt.c
• bsp/stm32/stm32f407-atk-explorer/board/ports/touch/drv_xpt2046_init.c

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📊 Current Review Status (Last Updated: 2026-01-16 15:14 CST)

• ⌛ Liang1795 Pending Review
• ⌛ hamburger-os Pending Review
• ⌛ wdfk-prog Pending Review

---

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3. PR合并前需至少一位维护者确认
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[Copilot]

Pull request overview

This PR fixes critical touch event handling bugs in the XPT2046 resistive touchscreen driver for the stm32f407-atk-explorer BSP and improves the touch sliding experience for LVGL applications.

Changes:

• Fixed missing touch release event (LV_INDEV_STATE_REL) that prevented LVGL widgets from responding to clicks
• Implemented coordinate smoothing with 5-point moving average filter to reduce resistive touchscreen jitter
• Added complete state machine for touch events (press, move, release) with debounce logic
• Corrected function return type from rt_ssize_t to rt_size_t in xpt2046_touch_readpoint
• Added CI configuration files for automated testing of LCD and touch features

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
bsp/stm32/stm32f407-atk-explorer/board/ports/touch/drv_xpt2046_init.c	Complete rewrite of touch event handling with state machine, coordinate filtering, and proper LVGL event states
bsp/stm32/stm32f407-atk-explorer/board/ports/touch/drv_touch_xpt.c	Fixed return type of xpt2046_touch_readpoint function and formatting improvements
bsp/stm32/stm32f407-atk-explorer/.ci/attachconfig/onboard-lcd.attach	Added CI configuration for LCD feature testing
bsp/stm32/stm32f407-atk-explorer/.ci/attachconfig/onboard-lcd-touch.attach	Added CI configuration for touch feature testing

[LinuxMint-User]

已修正代码格式与注释问题并修复Ci看护编译错误问题。

[LinuxMint-User]

@Rbb666
您好，代码已按照建议格式修改完毕并在本地通过编译，请审查。谢谢！