86 lines
1.9 KiB
Markdown
86 lines
1.9 KiB
Markdown
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# RP2040-ETH WS2812 Network Control
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This implementation adds ethernet connectivity to the WS2812 LED control, allowing you to control the LED color over the network.
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## Hardware Setup
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- **Board**: Waveshare RP2040-ETH
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- **LED**: WS2812 connected to GPIO 25
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- **Ethernet**: CH9120 chip handles TCP/IP communication
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## Network Configuration
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Default settings (can be modified in `ch9120.c`):
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- **IP Address**: 192.168.1.200
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- **Port**: 1000
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- **Mode**: TCP Client
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- **Target IP**: 192.168.1.10
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- **Target Port**: 2000
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## Building
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```bash
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cd build
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cmake ..
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make barnum_eth
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```
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## Flashing
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1. Hold BOOTSEL button and connect USB
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2. Copy `barnum_eth.uf2` to the RPI-RP2 drive
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3. The board will reboot automatically
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## Usage
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### Supported Commands
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Send these commands as TCP messages to control the LED:
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- `RED` - Set LED to red
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- `GREEN` - Set LED to green
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- `BLUE` - Set LED to blue
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- `WHITE` - Set LED to white
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- `OFF` - Turn LED off
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- `RGB:r,g,b` - Set custom color (e.g., `RGB:255,128,0` for orange)
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### Python Test Client
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Use the included `test_client.py` to test:
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```bash
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# Run demo sequence
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python3 test_client.py
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# Send single command
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python3 test_client.py "RGB:255,0,255"
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```
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### Features
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- Smooth color transitions between commands
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- Network status feedback via USB serial
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- Acknowledgment messages for each command
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## Pin Assignments
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- **WS2812 Data**: GPIO 25
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- **UART TX (CH9120)**: GPIO 20
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- **UART RX (CH9120)**: GPIO 21
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- **CFG (CH9120)**: GPIO 18
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- **RES (CH9120)**: GPIO 19
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## Troubleshooting
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1. **No network connection**:
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- Check ethernet cable is connected
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- Verify IP settings match your network
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- Use serial monitor to see debug output
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2. **LED not responding**:
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- Verify WS2812 is connected to GPIO 25
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- Check power supply to LED
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- Monitor serial output for errors
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3. **Can't flash the board**:
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- Make sure to use the correct board setting in CMakeLists.txt
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- The board type is already set to `waveshare_rp2040_eth`
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