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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BMP decoder

This extension allows the use of BMP images in LVGL. This implementation uses bmp-decoder library. The pixels are read on demand (not the whole image is loaded) so using BMP images requires very little RAM.

If enabled in lv_conf.h by LV_USE_BMP LVGL will register a new image decoder automatically so BMP files can be directly used as image sources. For example:

lv_img_set_src(my_img, "S:path/to/picture.bmp");

Note that, a file system driver needs to registered to open images from files. Read more about it here or just enable one in lv_conf.h with LV_USE_FS_...

Limitations

Only BMP files are supported and BMP images as C array (lv_img_dsc_t) are not. It's because there is no practical differences between how the BMP files and LVGL's image format stores the image data.
BMP files can be loaded only from file. If you want to store them in flash it's better to convert them to C array with LVGL's image converter.
The BMP files color format needs to match with LV_COLOR_DEPTH. Use GIMP to save the image in the required format. Both RGB888 and ARGB888 works with LV_COLOR_DEPTH 32
Palette is not supported.
Because not the whole image is read in can not be zoomed or rotated.

Example


.. include:: ../../examples/libs/bmp/index.rst

API


.. doxygenfile:: lv_bmp.h
  :project: lvgl

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BMP decoder

Limitations

Example

API

1.5 KiB

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