MCP23x17 Example

This example shows how to communicate with an MCP23017 I2C digital I/O exapander using the espp::Mcp23x17 component.

How to use example

Hardware Required

This example is designed to be used with an Adafruit MCP23017 I2C Breakout connected via I2C.

Build and Flash

Build the project and flash it to the board, then run monitor tool to view serial output:

idf.py -p PORT flash monitor

(Replace PORT with the name of the serial port to use.)

(To exit the serial monitor, type Ctrl-].)

See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.