Initial commit - Phase 3/4
🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
michael
69
pi-gen/stageDangerousPi/04-pisugar/00-run-chroot.sh
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69
pi-gen/stageDangerousPi/04-pisugar/00-run-chroot.sh
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#!/bin/bash -e
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# PiSugar UPS Support - Native I2C Driver
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#
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# This enables native I2C support for PiSugar UPS devices.
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# NO pisugar-server daemon is required - we communicate directly with
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# the battery management chip via I2C for minimal CPU usage.
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#
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# Supported hardware:
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# - PiSugar 2 (4-LEDs) - IP5209 chip at I2C address 0x75
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# - PiSugar 2 Pro - IP5209 chip at I2C address 0x75
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# - PiSugar 3 / 3 Plus - IP5312 chip at I2C address 0x57
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#
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# Features:
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# - Battery voltage/current/percentage reading
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# - Charging status detection
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# - Button tap detection
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# - RTC alarm for scheduled wake-up (SD3078 at 0x32)
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# - Force shutdown capability
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#
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# Disable this substage by creating a SKIP file if you don't use PiSugar
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echo "Configuring native PiSugar I2C support..."
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# Ensure I2C is enabled (already done in 03-dangerous-pi, but verify)
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BOOT_CONFIG="/boot/firmware/config.txt"
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if [ ! -f "$BOOT_CONFIG" ]; then
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BOOT_CONFIG="/boot/config.txt"
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fi
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if [ -f "$BOOT_CONFIG" ]; then
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if ! grep -q "^dtparam=i2c_arm=on" "$BOOT_CONFIG"; then
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echo "dtparam=i2c_arm=on" >> "$BOOT_CONFIG"
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echo "Enabled I2C in boot config"
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fi
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fi
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# Ensure i2c-dev module loads at boot
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mkdir -p /etc/modules-load.d
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echo "i2c-dev" > /etc/modules-load.d/i2c-dev.conf
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# smbus2 is already installed by 03-dangerous-pi stage
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# Verify it's available
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python3 -c "import smbus2; print('smbus2 available')" || {
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echo "Installing smbus2..."
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pip3 install --break-system-packages smbus2==0.4.3
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}
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# Install i2c-tools for debugging (optional but useful)
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apt-get update
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apt-get install -y i2c-tools
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echo ""
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echo "=============================================="
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echo "PiSugar Native I2C Support Configured"
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echo "=============================================="
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echo ""
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echo "The Dangerous Pi backend will automatically detect PiSugar hardware"
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echo "via I2C when UPS_TYPE=auto (default) is set."
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echo ""
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echo "Supported PiSugar models:"
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echo " - PiSugar 2 (4-LEDs) at I2C 0x75"
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echo " - PiSugar 2 Pro at I2C 0x75"
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echo " - PiSugar 3 / 3 Plus at I2C 0x57"
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echo ""
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echo "RTC (SD3078) detected at I2C 0x32 for wake-up alarms"
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echo ""
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echo "NOTE: pisugar-server daemon is NOT installed."
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echo "This native driver uses <1% CPU vs 350%+ for the daemon."
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echo ""
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102
pi-gen/stageDangerousPi/04-pisugar/README.md
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102
pi-gen/stageDangerousPi/04-pisugar/README.md
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# PiSugar UPS Support - Native I2C Driver
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This substage configures native I2C support for PiSugar 2/3 series UPS HATs.
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**NO pisugar-server daemon is required** - we communicate directly with the battery management chip via I2C for minimal CPU usage (<1% vs 350%+ for the daemon).
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## Enabling PiSugar Support
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PiSugar configuration is **disabled by default**. To enable it during build:
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```bash
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# Remove the SKIP file
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rm pi-gen/stageDangerousPi/04-pisugar/SKIP
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# Then build the image
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./build-image.sh
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```
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## How It Works
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Dangerous Pi includes a native I2C driver that communicates directly with the PiSugar hardware:
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- **IP5209** (PiSugar 2 series) at I2C address `0x75`
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- **IP5312** (PiSugar 3 series) at I2C address `0x57`
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- **SD3078** RTC at I2C address `0x32`
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The driver auto-detects the hardware when `UPS_TYPE=auto` (default).
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## Features
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- Battery voltage, current, and percentage reading
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- Charging status detection (AC/battery power source)
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- Button tap detection (single, double, long press)
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- RTC read/write for scheduled wake-up alarms
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- Force shutdown capability
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- Low battery warnings and automatic safe shutdown
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## Configuring Dangerous Pi for PiSugar
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By default, PiSugar is auto-detected. You can explicitly configure it in `/opt/dangerous-pi/.env`:
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```bash
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# Auto-detect UPS hardware (default, recommended)
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UPS_TYPE=auto
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# Or explicitly use native I2C driver
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UPS_TYPE=pisugar
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```
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Then restart Dangerous Pi:
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```bash
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sudo systemctl restart dangerous-pi
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```
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## Supported Hardware
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| Model | Chip | I2C Address | Notes |
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|-------|------|-------------|-------|
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| PiSugar 2 (4-LEDs) | IP5209 | 0x75 | For Pi Zero |
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| PiSugar 2 Pro | IP5209 | 0x75 | For larger Pis |
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| PiSugar 3 | IP5312 | 0x57 | For Pi Zero 2W |
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| PiSugar 3 Plus | IP5312 | 0x57 | For Pi 4/5 |
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## Verifying Installation
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Check if PiSugar hardware is detected:
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```bash
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# List I2C devices
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i2cdetect -y 1
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# Expected output for PiSugar 2:
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# 0 1 2 3 4 5 6 7 8 9 a b c d e f
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# 30: -- -- 32 -- -- -- -- -- -- -- -- -- -- -- -- -- <- RTC
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# 70: -- -- -- -- -- 75 -- -- <- Battery
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```
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Check UPS status via API:
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```bash
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curl http://localhost:8000/api/system/ups/status
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```
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## Migrating from pisugar-server
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If you previously installed pisugar-server:
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```bash
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# Stop and disable the daemon
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sudo systemctl stop pisugar-server
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sudo systemctl disable pisugar-server
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# The native driver will automatically take over
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sudo systemctl restart dangerous-pi
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```
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## Additional Resources
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- [PiSugar GitHub](https://github.com/PiSugar/PiSugar)
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- [PiSugar Wiki](https://github.com/PiSugar/PiSugar/wiki)
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- Native driver source: `app/backend/managers/ups_drivers/pisugar_i2c_driver.py`
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2
pi-gen/stageDangerousPi/04-pisugar/SKIP
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2
pi-gen/stageDangerousPi/04-pisugar/SKIP
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@@ -0,0 +1,2 @@
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# Remove this file to enable PiSugar installation
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# PiSugar support is optional and disabled by default
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