The MCP23x17
I/O expander component allows the user to configure inputs,
outputs, interrupts, etc. via a serial interface such as SPI or I2C.
The example shows how to communicate with an MCP23017 I2C digital
I/O exapander using the espp::Mcp23x17
component.
d1d5a8b0b316c32e0b40106fb237c251048896fa
idf.py add-dependency "espp/mcp23x17^1.0.24"