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An interface for the MCP23017 gpio expander chip for Raspberry PI.

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ellabellla/mcp23017-rpi-lib

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MCP23017 RPI Library

This library provides an interface for the MCP23017 gpio expander chip. It is based on a python library of the same name, found here.

You can view the docs here.

Example - Blink

let mut mcp = MCP23017::new(0x20, 1).unwrap();
let led = Pin::new(0).unwrap();
mcp.pin_mode(&led, Mode::Output).unwrap();

loop {
    mcp.output(&led, State::High).unwrap();
    sleep(Duration::from_millis(200));
    mcp.output(&led, State::Low).unwrap();
    sleep(Duration::from_millis(200));
}  

Pin Conversion

PIN MCP PIN Name
0 21 GPA0
1 22 GPA1
2 23 GPA2
3 24 GPA3
4 25 GPA4
5 26 GPA5
6 27 GPA6
7 28 GPA7
8 1 GPB0
9 2 GPB1
10 3 GPB2
11 4 GPB3
12 5 GPB4
13 6 GPB5
14 7 GPB6
15 8 GPB7

License

This software is provided under the MIT license. Click here to view. The original python library is also licensed under MIT. It can be found here.