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docs: 移除 SGM3833 升压负压芯片，更新 P3.4 引脚为 LCD_PWR_CTRL 直接背光供电控制

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zouhaitao
2026-07-09 14:55:16 +08:00
parent cf25a89c0f
commit 357238e056
11 changed files with 17 additions and 15 deletions
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Docs/30_architecture/main.md
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@@ -18,7 +18,7 @@
| **P0.4** | `KEY_CONFIRM`| 高阻输入+上拉 | 侧边按键 ■ (确认)，按下为低电平 |
| **P0.2** | `KEY_SOS1` | 高阻输入+上拉 | 上部按键 SOS 1，按下为低电平 |
| **P0.5** | `KEY_SOS2` | 高阻输入+上拉 | 上部按键 SOS 2，按下为低电平 |
| **P3.4** | `SGM_CTRL` | 推挽输出 | LCD 屏幕背光与芯片电源控制引脚。高电平使能，低电平关闭 |
| **P3.4** | `LCD_PWR_CTRL` | 推挽输出 | LCD 屏幕背光与芯片电源控制引脚。高电平使能，低电平关闭 |
| **P1.1** | `LCD_RST` | 推挽输出 | LCD 屏幕复位引脚 |
| **P1.3** | `LCD_RS` | 推挽输出 | LCD 屏幕 SPI 数据/命令寄存器选择 (D/C) |
| **P1.4** | `LCD_CS` | 推挽输出 | LCD 屏幕 SPI 片选信号 |