Adafruit-MCP23017-Arduino-Library
Adafruit-MCP23017-Arduino-Library copied to clipboard
Support boards with only SPI or Wire (I2C)
This library currently requires both SPI and Wire to be present for any target board. This can cause build failures for targets that only have one or the other. Ex:
https://github.com/adafruit/Adafruit_LiquidCrystal/pull/15 https://github.com/adafruit/Adafruit_Learning_System_Guides/pull/2340
Need to add some preproc or other logic to protect against this and allow these type of targets to be used.