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Gpio
Paul Cowan edited this page Nov 5, 2013
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| KegNet Function | WiringPi Pin | Hardware Pin | Function | Header LEFT | Header RIGHT | Function | Hardware Pin | wiringPi Pin | KegNet Function |
|---|---|---|---|---|---|---|---|---|---|
| - | – | – | 3V3 | 1 | 2 | 5V0 | – | – | 5.0V |
| - | 8 | 2 | I2C1_SDA | 3 | 4 | 5V0 | – | – | - |
| - | 9 | 3 | I2C1_SCL | 5 | 6 | GND | – | – | - |
| W1 TEMP | 7 | 4 | GPCLK0 | 7 | 8 | UART0_TXD | 14 | 15 | - |
| – | – | GND | 9 | 10 | UART0_RXD | 15 | 16 | - | |
| FLOW METER 1 | 0 | 17 | - | 11 | 12 | PCM_CLK | 18 | 1 | - |
| LED | 2 | 27 | PCM_DOUT | 13 | 14 | GND | – | – | - |
| FLOW METER 2 | 3 | 22 | - | 15 | 16 | - | 23 | 4 | FLOW METER 3 (?) |
| – | – | 3V3 | 17 | 18 | - | 24 | 5 | BUTTON/FLOW METER 4 (?) | |
| - | 12 | 10 | SPI0_MOSI | 19 | 20 | GND | – | – | - |
| - | 13 | 9 | SPI0_MISO | 21 | 22 | - | 25 | 6 | - |
| - | 14 | 11 | SPI0_SCLK | 23 | 24 | SPI0_CE0_N | 8 | 10 | - |
| GND | – | – | GND | 25 | 26 | SPI0_CE1_N | 7 | 11 | - |
- Numbering applies to Raspberry Pi REV 3 board only
- Hardware pin is the pin number assigned by the BCM2835 chip, also called BCM Pin
- The 1-wire temperature probe only seems to work on BCM pin 4 with current kernel modules
- Flow meter assignments
- I'm designing for 2 flow meters only, but we could go up to 5 or maybe more
- Flow meters 3-5 and button are not actually used yet and could change
- This table is a combination of information from the following sources