DESKTOP-PUHFO60\dsx2016
0d80734c00
Use GPIO27 for BL (not 21/INT), leave INT as INPUT after address select, and ship exported firmware/cyd_35r package. Co-authored-by: Cursor <cursoragent@cursor.com>
34 lines
788 B
Markdown
34 lines
788 B
Markdown
# HW-269 白光灯（CYD）
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触控 + LVGL 参考 `tftest`。GPIO22 PWM 控制 HW-269：开关 + 亮度。
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## 硬件
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| 项目 | 2.8" · 2432S028R | 3.5" C · 3248S035C |
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|------|------------------|---------------------|
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| 屏 / 触控 | ILI9341 + XPT2046 SoftSPI | ST7796 + GT911 I2C |
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| 背光 | GPIO21 | GPIO27 |
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| HW-269 信号 | **GPIO22**（第一脚，两板相同） | **GPIO22** |
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| PlatformIO | `cyd` | `cyd_35r` |
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接线：`VCC→5V`，`GND→GND`，`S→GPIO22`。
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## 操作
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- 底部按钮：开关灯
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- 滑条：亮度 0–100%
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## 构建 / 刷写
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```bash
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# 2.8"
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pio run -e cyd -t upload
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.\firmware\export_from_build.ps1
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cd firmware\cyd; .\flash.ps1
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# 3.5"
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pio run -e cyd_35r -t upload
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.\firmware\export_from_build.ps1 -Env cyd_35r
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cd firmware\cyd_35r; .\flash.ps1
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```
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