Interface Schematic
Raspberry Pi GPIO used
| PIN# | GPIO | Functions |
|---|---|---|
| 3 | GPIO2 | I2C-SDA, battery fuel-gauge systems -reading battery voltage and percentage |
| 5 | GPIO3 | I2C-SCL, battery fuel-gauge systems -reading battery voltage and percentage |
| 31 | GPIO6 | AC power loss & power adapter failture detection, Low-power supply failed, High-power supply OK |
| 36 | GPIO16 | Control battery charging, High-charging disabled, Low-charging disabled |