Baji_Rtc_Toy/gridnav.md at ccea0c681c473dd682059c6680c118d625cc2fa7

Rdzleo c24a9bc162 feat: 集成 dzbj LVGL 显示模块 + 配网模式内存优化

阶段1: 将 dzbj 项目的 LVGL 8.3.11 LCD 显示集成到 AI小智 主项目，
开机显示 ScreenHome 界面，同时优化配网模式下的内存使用，
确保 WiFi+BLE+LVGL 三者共存运行。

## 新增功能

### dzbj 显示模块集成
- 新增 main/dzbj/ 目录，移植 LCD 驱动(ST77916 QSPI)、触摸驱动(CST816S)、
  LVGL 初始化和 SquareLine Studio UI 界面
- I2C 总线共享：dzbj 触摸控制器复用主项目的 I2C_NUM_1 总线
- GPIO 冲突解决：LED(GPIO21)、Touch1(GPIO1)、Touch4(GPIO7) 改为 NC，
  电池 ADC 从 GPIO6 改为 GPIO3
- 添加 LVGL、esp_lcd_st77916、esp_lcd_touch_cst816s 等组件依赖
- managed_components 纳入版本管理

### 配网模式轻量化启动
- BoxAudioCodec: 新增 output_only 模式，仅创建 I2S TX 通道（省 ~13KB DMA）
  跳过 ES7210 ADC 初始化（省 ~2-4KB）
- AudioCodec: 新增 StartOutputOnly() 方法，仅启用扬声器输出
- Application: 配网模式跳过 Opus 编码器、输入重采样器、协议初始化、
  天气位置检测等网络业务
- 板级构造函数: 配网模式跳过电池检测、IMU传感器、PowerSaveTimer

### WifiBoard 配网流程修复
- NeedsProvisioning() 静态方法: 读取 NVS force_ap 和 SSID 列表，
  用于提前判断配网模式
- force_ap 竞态修复: 构造函数不再清零 force_ap，改在 StartNetwork() 清零，
  确保 NeedsProvisioning() 能正确读到 force_ap=1
- Application 缓存 provisioning_mode_ 成员变量，避免重复读 NVS

### BLE 配网重启修复
- 配网成功后用 esp_timer 延迟重启替代 xTaskCreate，
  避免内存紧张时任务创建失败导致设备不重启
- 注释掉 WiFi 连接成功后的 MAC 地址发送步骤

### sdkconfig 内存优化
- BT_ALLOCATION_FROM_SPIRAM_FIRST=y (BLE 动态分配优先 PSRAM)
- SPIRAM_MALLOC_RESERVE_INTERNAL=32768
- NVS_ALLOCATE_CACHE_IN_SPIRAM=y
- WiFi 静态缓冲区数量优化 (RX=10, TX=8)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-27 17:07:51 +08:00

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Grid navigation (gridnav for short) is a feature that changes the currently focused child object as arrow keys are pressed.

If the children are arranged into a grid-like layout then the up, down, left and right arrows move focus to the nearest sibling in the respective direction.

It doesn't matter how the children are positioned, as only the current x and y coordinates are considered. This means that gridnav works with manually positioned children, as well as Flex and Grid layouts.

Gridnav also works if the children are arranged into a single row or column. That makes it useful, for example, to simplify navigation on a List widget.

Gridnav assumes that the object to which gridnav is added is part of a group. This way, if the object with gridnav is focused, the arrow key presses are automatically forwarded to the object so that gridnav can process the arrow keys.

To move the focus to the next widget of the group use LV_KEY_NEXT/PREV or lv_group_focus_next/prev() or the TAB key on keyboard as usual.

If the container is scrollable and the focused child is out of the view, gridnav will automatically scroll the child into view.

Usage

To add the gridnav feature to an object use lv_gridnav_add(cont, flags).

flags control the behavior of gridnav:

LV_GRIDNAV_CTRL_NONE Default settings
LV_GRIDNAV_CTRL_ROLLOVER If there is no next/previous object in a direction, the focus goes to the object in the next/previous row (on left/right keys) or first/last row (on up/down keys
LV_GRIDNAV_CTRL_SCROLL_FIRST If an arrow is pressed and the focused object can be scrolled in that direction then it will be scrolled instead of going to the next/previous object. If there is no more room for scrolling the next/previous object will be focused normally

lv_gridnav_remove(cont) Removes gridnav from an object.

Focusable objects

An object needs to be clickable or click focusable (LV_OBJ_FLAG_CLICKABLE or LV_OBJ_FLAG_CLICK_FOCUSABLE) and not hidden (LV_OBJ_FLAG_HIDDEN) to be focusable by gridnav.

Example


.. include:: ../../examples/others/gridnav/index.rst

API


.. doxygenfile:: lv_gridnav.h
  :project: lvgl

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Grid navigation

Usage

Focusable objects

Example

API

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