Board bring-up/test program for ADS1115-based ADC board.

This test program can be used to verify the hardware, and to prototype or try out features. The code here is not production-grade, and resides in a single large main.cpp file, it should be broken out into separate files for a real application. Configuration values are not (significantly) sanity-checked. Use this repo to quickly try out things and to prototype code that could be copy-pasted either whole or in fragments into your application.

(a) Prints out voltage values to console every second

(b) Hold down a button wired to GP27 or GP21 (either is fine) at start-up, to go into a configuration menu mode

(c) In configuration menu mode, press Enter in the serial console, to see a configuration menu. Values are written to EEPROM.

(a) Read the configuration from the EEPROM and use it

(b) Read temperature sensor and print the value to the console

(c) Allow plugging on a LCD screen for displaying the voltage values without requiring a serial console connection. A suitable display is Waveshare Pico-LCD-1.3 since it can plug on top, and could be suitable for an end application (e.g. display current status while measurements are logged/plotted on a PC).