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107 lines
2.6 KiB
107 lines
2.6 KiB
# WiringPi for Python
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WiringPi: An implementation of most of the Arduino Wiring
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functions for the Raspberry Pi
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WiringPi implements new functions for managing IO expanders.
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# Quick Build
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A quick and dirty build script is supplied to install WiringPi-Python for Python 2 and 3. Just:
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```
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git clone --recursive https://github.com/WiringPi/WiringPi-Python.git
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cd WiringPi-Python
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./build.sh
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```
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# Manual Build
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## Get/setup repo
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```bash
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git clone --recursive https://github.com/WiringPi/WiringPi-Python.git
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cd WiringPi-Python
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git submodule update --init
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```
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## Prerequisites
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To rebuild the bindings
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you **must** first have python-dev, python-setuptools and swig installed.
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```bash
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sudo apt-get install python-dev python-setuptools swig
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```
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## Build WiringPi
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```bash
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cd WiringPi
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sudo ./build
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```
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## Generate Bindings
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Return to the root directory of the repository and:
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`swig2.0 -python wiringpi.i`
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or
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`swig3.0 -thread -python wiringpi.i`
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## Build & install with
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`sudo python setup.py install`
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Or Python 3:
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`sudo python3 setup.py install`
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## Usage
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import wiringpi
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wiringpi.wiringPiSetup() # For sequential pin numbering, one of these MUST be called before using IO functions
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# OR
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wiringpi.wiringPiSetupSys() # For /sys/class/gpio with GPIO pin numbering
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# OR
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wiringpi.wiringPiSetupGpio() # For GPIO pin numbering
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Setting up IO expanders (This example was tested on a quick2wire board with one digital IO expansion board connected via I2C):
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wiringpi.mcp23017Setup(65,0x20)
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wiringpi.pinMode(65,1)
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wiringpi.digitalWrite(65,1)
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**General IO:**
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wiringpi.pinMode(6,1) # Set pin 6 to 1 ( OUTPUT )
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wiringpi.digitalWrite(6,1) # Write 1 ( HIGH ) to pin 6
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wiringpi.digitalRead(6) # Read pin 6
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**Setting up a peripheral:**
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WiringPi2 supports expanding your range of available "pins" by setting up a port expander. The implementation details of
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your port expander will be handled transparently, and you can write to the additional pins ( starting from PIN_OFFSET >= 64 )
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as if they were normal pins on the Pi.
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wiringpi.mcp23017Setup(PIN_OFFSET,I2C_ADDR)
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**Soft Tone**
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Hook a speaker up to your Pi and generate music with softTone. Also useful for generating frequencies for other uses such as modulating A/C.
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wiringpi.softToneCreate(PIN)
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wiringpi.softToneWrite(PIN,FREQUENCY)
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**Bit shifting:**
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wiringpi.shiftOut(1,2,0,123) # Shift out 123 (b1110110, byte 0-255) to data pin 1, clock pin 2
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**Serial:**
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serial = wiringpi.serialOpen('/dev/ttyAMA0',9600) # Requires device/baud and returns an ID
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wiringpi.serialPuts(serial,"hello")
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wiringpi.serialClose(serial) # Pass in ID
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**Full details at:**
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http://www.wiringpi.com
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