We have been asked to put together tables showing the i2c and GPIO mappings for both the Raspberry Pi and the Arduino Battery Watchdog in Project Curacao. While you can figure it out from the software and comments, it would be great to have the mappings in one place. We are also putting this in Article 5, Project Curacao Software. Updated with solar/wind GPIOs on 01/07/14.
RaspBerry Pi i2c Mappings
| i2c address | Device | Function |
|---|---|---|
| 0x29 | BM017 / TCS34725 | RGBC Color Sensor |
| 0x39 | TSL2561 | Luminosity Sensor |
| 0x40 | INA219 | Raspberry Pi Input Voltage/Current |
| 0x41 | INA219 | Battery Input Voltage/Current |
| 0x44 | INA219 | Solar Panel Output Voltage/Current |
| 0x48 | ADS1915 A/D | 12 bit A/D converter |
| Channel 0 | Pi Battery Temperature | |
| Channel 1 | Camera Servo Feedback Potentiometer | |
| 0x77 | BMP085 | Baro/Temp readings |
RaspBerry Pi GPIO Mappings (GPIO.setmode(GPIO.board))
| RPI.GPIO | Raspberry Pi Name | BCM2835 | Pin Number | Function |
|---|---|---|---|---|
| 7 | GPIO7 | GPIO4 | P1_07 | Rising Edge Interrupt to Arduino |
| 8 | TXD | GPIO14 | P1_08 | TXD to Arduino |
| 10 | RXD | GPIO15 | P1_10 | RXD to Arduino |
| 12 | GPIO1 | GPIO18 | P1_12 | Software PWM for Camera Servo |
| 15 | GPIO3 | GPIO22 | P1_15 | Pulse to Turn Fan Off |
| 16 | GPIO4 | GPIO23 | P1_16 | DHT22 Temp/Hum Interface |
| 18 | GPIO5 | GPIO24 | P1_18 | Pulse to Turn Fan On |
| 22 | GPIO6 | GPIO25 | P1_22 | Activity LED |
Arduino Battery Watchdog i2c Mappings
| i2c address | Device | Function |
|---|---|---|
| 0x40 | INA219 | Arduino Input Voltage/Current |
| 0x41 | INA219 | Arduino Solar Cell Voltage/Current |
| 0x44 | INA219 | Arduino Battery Voltage/Current |
| 0x5C | AMS 2315 | Outside Temp/Humidity |
| 0x68 | RTC1307 | Real Time Clock |
Arduino Battery Watchdog GPIO Mappings
| GPIO | Function | Comments |
|---|---|---|
| 22 | Interrupt Pi | Level |
| 27 | Pi Latched Relay Reset | Pulse |
| 29 | Pi Latched Relay Set | Pulse |
| 35 | LED Pi Interrupt On | Arduino Battery Voltage/Current |
| 41 | Select Wind Set | Wind Turbine |
| 43 | Select Solar Reset | Solar Panels |
Arduino Battery Watchdog A/D Mappings
| Channel | Function |
|---|---|
| A3 | Pi Battery Voltage |
| A5 | Regulated Wind Voltage |
| A7 | Unregulated Wind Voltage |
| A9 | Pi Solar Voltage |