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examples: add an example PCF8574 script
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""" | ||
An example of a script that can be used with the run-script mode. | ||
This will read and write the pins of a PCF8574. Once connected, run: | ||
glasgow run-script i2c-pcf8574.py i2c-initiator -V 3.3 | ||
""" | ||
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# read pin values | ||
p = await iface.read(0x20, 1) | ||
print('I/O pin state: 0b{:08b}'.format(p)) | ||
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# write pin values | ||
await iface.write(0x20, [ 0x55 ]) | ||
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# power down the device after use | ||
await device.set_voltage("AB", 0) |