A module to access GPIO expanders MCP23S17 from a Raspberry Pi.
Project description
This is a Python module that abstracts the GPIO expander MCP23S17. It is intended for the use on a Raspberry Pi.
Provided Functions
As a quick overview, the module provides the following functions. Refer to the module documentation for details:
open
close
setPullupMode
setDirection
digitalRead
digitalWrite
writeGPIO
readGPIO
Installation
If not already done, you need to install PIP via:
sudo apt-get install python-pip
The module can be installed via PIP with:
pip install RPi-MCP23S17
Alternatively, you can directly download from this repository .
Example
The following demo peridically toggles all pins of two MCP23S17 components:
mcp1 = MCP23S17(deviceID=0x00) mcp2 = MCP23S17(deviceID=0x01) mcp1.open() mcp2.open() for x in range(0, 16): mcp1.setDirection(x, mcp1.DIR_OUTPUT) mcp2.setDirection(x, mcp1.DIR_OUTPUT) print "Starting blinky on all pins (CTRL+C to quit)" while (True): for x in range(0, 16): mcp1.digitalWrite(x, MCP23S17.LEVEL_HIGH) mcp2.digitalWrite(x, MCP23S17.LEVEL_HIGH) time.sleep(1) for x in range(0, 16): mcp1.digitalWrite(x, MCP23S17.LEVEL_LOW) mcp2.digitalWrite(x, MCP23S17.LEVEL_LOW) time.sleep(1)
Change Log
0.2.0
Reorganized module structure
0.1.1
Enhanced package setup script setup.py
Updated documentation
0.1.0
Initial release
Project details
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