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hardware

@sciclaw · 收录于 1 周前 · 上游提交 2 周前

Read and control I2C and SPI peripherals on Sipeed boards (LicheeRV Nano, MaixCAM, NanoKVM).

场景嵌入式开发硬件调试

适合你，如果你在用 Sipeed 开发板控制外设

/ 下载安装
https://github.com/sciclaw/sciclaw/tree/main/workspace/skills/hardware ↗
/ 通过 npx 安装 校验哈希
npx oh-my-skill add sciclaw/sciclaw/hardware
/ 通过 bash 安装
curl -fsSL https://oh-my-skill.com/install.sh | bash -s -- sciclaw/sciclaw/hardware
/ 已经装过?验证本机副本,不用重装
npx oh-my-skill verify sciclaw/sciclaw/hardware
安装目标可用 --agent / --scope 或 --to 明确指定;省略时只会在唯一已存在的 agent 目录上自动选择,零命中或多命中会停止并提示。content_hash 缺失或不一致均拒装。
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怎么用

商店整理自技能原文 · 版本 5d19464 · 表述以原文为准
它做什么

装上后，Claude 可以读取和控制连接在 Sipeed 开发板（如 LicheeRV Nano、MaixCAM、NanoKVM）上的 I2C 和 SPI 外设，例如传感器、显示屏等。

什么时候触发

当你需要与 I2C 或 SPI 设备通信时触发，例如扫描总线、读取传感器数据或配置外设。

装好后可以这样说
执行 i2c scan 命令
执行 i2c read 命令
执行 spi list 命令
技能原文 SKILL.md作者撰写 · MIT · 5d19464

Hardware (I2C / SPI)

Use the i2c and spi tools to interact with sensors, displays, and other peripherals connected to the board.

Quick Start
# 1. Find available buses
i2c detect

# 2. Scan for connected devices
i2c scan  (bus: "1")

# 3. Read from a sensor (e.g. AHT20 temperature/humidity)
i2c read  (bus: "1", address: 0x38, register: 0xAC, length: 6)

# 4. SPI devices
spi list
spi read  (device: "2.0", length: 4)
Before You Start — Pinmux Setup

Most I2C/SPI pins are shared with WiFi on Sipeed boards. You must configure pinmux before use.

See references/board-pinout.md for board-specific commands.

Common steps:

  1. Stop WiFi if using shared pins: /etc/init.d/S30wifi stop
  2. Load i2c-dev module: modprobe i2c-dev
  3. Configure pinmux with devmem (board-specific)
  4. Verify with i2c detect and i2c scan
Safety
  • Write operations require confirm: true — always confirm with the user first
  • I2C addresses are validated to 7-bit range (0x03-0x77)
  • SPI modes are validated (0-3 only)
  • Maximum per-transaction: 256 bytes (I2C), 4096 bytes (SPI)
Common Devices

See references/common-devices.md for register maps and usage of popular sensors: AHT20, BME280, SSD1306 OLED, MPU6050 IMU, DS3231 RTC, INA219 power monitor, PCA9685 PWM, and more.

Troubleshooting

| Problem | Solution | |---------|----------| | No I2C buses found | modprobe i2c-dev and check device tree | | Permission denied | Run as root or add user to i2c group | | No devices on scan | Check wiring, pull-up resistors (4.7k typical), and pinmux | | Bus number changed | I2C adapter numbers can shift between boots; use i2c detect to find current assignment | | WiFi stopped working | I2C-1/SPI-2 share pins with WiFi SDIO; can't use both simultaneously | | devmem not found | Download separately or use busybox devmem | | SPI transfer returns all zeros | Check MISO wiring and device power | | SPI transfer returns all 0xFF | Device not responding; check CS pin and clock polarity (mode) |

按 MIT 许可原样转载,未经改动 · 在 GitHub 查看 →

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