Difference between revisions of "GPIO Pinout"
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==GPIO ordered by Signal Name== | ==GPIO ordered by Signal Name== | ||
<table border=1> | <table border=1> | ||
| − | <th> | + | <th>Broadcom</th><th>Alt Function</th><th>J8</th><th>H1</th><th>H5</th> |
<tr><td bgcolor="orange">3.3 VDC Power</td><td></td><td>1</td><td>1</td><td>3</td></tr> | <tr><td bgcolor="orange">3.3 VDC Power</td><td></td><td>1</td><td>1</td><td>3</td></tr> | ||
<tr><td bgcolor="orange">3.3 VDC Power</td><td></td><td>17</td><td>17</td><td></td></tr> | <tr><td bgcolor="orange">3.3 VDC Power</td><td></td><td>17</td><td>17</td><td></td></tr> | ||
Revision as of 04:52, 29 April 2015
Contents
General Purpose Input Output (GPIO)
This page is to identify the alternate functions of the Raspberry Pi GPIO and to keep Hivetool developers from stepping on each other by reserving pins for Hivetool hardware.
Notes
- GPIO pins are 3.3 volt logic levels and are not tolerant of 5V levels
- THE GPIO PINS ARE NUMBERED TWO DIFFERENT WAYS, Broadcom and RPi.
- These GPIO properties are set as a block, not per pin (GPIO pins 0-27 are in the same block).
- Can interrupt based on high/low/rise/fall/change.
- Schmitt Trigger Input (hysteresis) can be on or off,
- Output slew rate can be fast or limited, and
- Source and sink currents are configurable from 2 mA up to 16 mA.
- ID_SD and ID_SC PINS are reserved for ID EEPROM.
- At boot time this I2C interface will be interrogated to look for an EEPROM that identifies the attached board and allows
- automagic setup of the GPIOs (and optionally, Linux drivers).
- DO NOT USE these pins for anything other than attaching an I2C ID EEPROM. Leave unconnected if ID EEPROM not required.
Color Legend
| Color Legend | ||
|---|---|---|
| 3.3 VDC Power | Serial Console/Power | I2S Audio |
| 5 VDC Power | HX711 Scale | HAT ID ROM |
| Ground | DHT22 Temp/Hum. | I2C Sensors |
| Unused | ||
Light green signals labeled "Unused" are available for development. Other colors are being used or are reserved for sensor families. A rain gauge and tilt sensor need to be implemented.
GPIO ordered by Header Pins
THE GPIO PINS ARE REFERRED TO BY TWO DIFFERENT NAMING CONVENTIONS, Broadcom and RPi
The first 26 pins on J8 (A+ and B+ models) are the same as H1 on the A and B models.
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Output of wiringPi gpio command (sudo gpio readall):
+-----+-----+---------+------+---+--B Plus--+---+------+---------+-----+-----+ | BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM | +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+ | | | 3.3v | | | 1 || 2 | | | 5v | | | | 2 | 8 | SDA.1 | ALT0 | 1 | 3 || 4 | | | 5V | | | | 3 | 9 | SCL.1 | ALT0 | 1 | 5 || 6 | | | 0v | | | | 4 | 7 | GPIO. 7 | IN | 1 | 7 || 8 | 1 | ALT0 | TxD | 15 | 14 | | | | 0v | | | 9 || 10 | 1 | ALT0 | RxD | 16 | 15 | | 17 | 0 | GPIO. 0 | IN | 0 | 11 || 12 | 0 | OUT | GPIO. 1 | 1 | 18 | | 27 | 2 | GPIO. 2 | IN | 0 | 13 || 14 | | | 0v | | | | 22 | 3 | GPIO. 3 | IN | 0 | 15 || 16 | 0 | IN | GPIO. 4 | 4 | 23 | | | | 3.3v | | | 17 || 18 | 0 | OUT | GPIO. 5 | 5 | 24 | | 10 | 12 | MOSI | IN | 0 | 19 || 20 | | | 0v | | | | 9 | 13 | MISO | IN | 0 | 21 || 22 | 1 | IN | GPIO. 6 | 6 | 25 | | 11 | 14 | SCLK | IN | 0 | 23 || 24 | 1 | IN | CE0 | 10 | 8 | | | | 0v | | | 25 || 26 | 1 | IN | CE1 | 11 | 7 | | 0 | 30 | SDA.0 | IN | 1 | 27 || 28 | 1 | IN | SCL.0 | 31 | 1 | | 5 | 21 | GPIO.21 | IN | 1 | 29 || 30 | | | 0v | | | | 6 | 22 | GPIO.22 | IN | 1 | 31 || 32 | 0 | IN | GPIO.26 | 26 | 12 | | 13 | 23 | GPIO.23 | IN | 0 | 33 || 34 | | | 0v | | | | 19 | 24 | GPIO.24 | IN | 0 | 35 || 36 | 0 | IN | GPIO.27 | 27 | 16 | | 26 | 25 | GPIO.25 | IN | 0 | 37 || 38 | 0 | IN | GPIO.28 | 28 | 20 | | | | 0v | | | 39 || 40 | 0 | IN | GPIO.29 | 29 | 21 | +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+ | BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM | +-----+-----+---------+------+---+--B Plus--+---+------+---------+-----+-----+
GPIO ordered by Signal Name
| Broadcom | Alt Function | J8 | H1 | H5 |
|---|---|---|---|---|
| 3.3 VDC Power | 1 | 1 | 3 | |
| 3.3 VDC Power | 17 | 17 | ||
| 5 VDC Power | 2 | 2 | 1 | |
| 5 VDC Power | 4 | 4 | ||
| GPIO 0 | I2C0_SDA | 27 | ||
| GPIO 1 | I2C0_SCL | 28 | ||
| GPIO 2 | I2C1 SDA | 3 | 3 | |
| GPIO 3 | I2C1 SCL | 5 | 5 | |
| GPIO 4 | GPCLK0 | 7 | 7 | |
| GPIO 5 | GPCLK1 | 29 | ||
| GPIO 6 | GPCLK2 | 31 | ||
| GPIO 7 | SPI0 CE1 | 26 | 26 | |
| GPIO 8 | SPI0 CE0 | 24 | 24 | |
| GPIO 9 | SPI0 MISO | 21 | 21 | |
| GPIO 10 | SPI0 MOSI | 19 | 19 | |
| GPIO 11 | SPI0 SCLK | 23 | 23 | |
| GPIO 12 | PWM0 | 32 | ||
| GPIO 13 | PWM1 | 33 | ||
| GPIO 14 | UART0 TXD | 8 | 8 | |
| GPIO 15 | UART0 RXD | 10 | 10 | |
| GPIO 16 | 36 | |||
| GPIO 17 | 11 | 11 | ||
| GPIO 18 | PCM_CLK | 12 | 12 | |
| GPIO 19 | PCM_FS | 35 | ||
| GPIO 20 | PCM_DIN | 38 | ||
| GPIO 21 | PCM DOUT | 40 | ||
| GPIO 22 | 15 | 15 | ||
| GPIO 23 | 16 | 16 | ||
| GPIO 24 | 18 | 18 | ||
| GPIO 25 | 22 | 22 | ||
| GPIO 26 | 37 | |||
| GPIO 27 | 13 | 13 | ||
| GPIO 28 | I2C0_SDA | 3 | ||
| GPIO 29 | I2C0_SCL | 4 | ||
| GPIO 30 | 5 | |||
| GPIO 31 | 6 | |||
| Ground | 6 | 6 | 7 | |
| Ground | 9 | 9 | 8 | |
| Ground | 14 | 14 | ||
| Ground | 20 | 20 | ||
| Ground | 25 | 25 | ||
| Ground | 30 | |||
| Ground | 34 | |||
| Ground | 39 |
