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This is an example project for M5Stamp C3U on PlatformIO

Project forked to explore how to use this board.

Work in progress:

  • Setup things with Arduino IDE 1.8.19, boards and lib.
    Here on Master branch.
  • Understand how to communicate with I2C,
    Check branch I2Cscan
  • Play with a Oled .096 display and the ENV unit DHT11,
    Check branch OledDHT11
  • Expand GPIO with MCP23017 and I2C.
    Check branch mcp23017
  • Then go back to setup the board in platform.io,
    Here on Master branch.
  • connect and log data with the "data logger shield for WIFI D1 MINI"
  • measuring of State of a battery (V) and power form solar pannel (A)
  • return the tilt values from ADXL345 on a graph with web server.

Notes:

Pay attention to the model you have.

  • C3 need a FTDI driver
  • C3U doesn't but need to be in program download mode.

For more stuff, check the issue #1

- To use with Arduino IDE

https://docs.espressif.com/projects/arduino-esp32/en/latest/installing.html#installing-using-arduino-ide

- To use with Platform.io

Clone this repo, everything is adjusted in platformio.ini
Just build and upload

- Test program

main.cpp : Internal led will change its color with each press on the button.

For ARDUINO IDE: You can copy/paste the code from main.cpp Don't forget to install libraries.

- To enter into "program download" mode operation:

  • Long press the center button (G9) of STAMP C3U under power failure condition.
  • Connect USB to the computer while holding the button,

after that, the port is successfully identified, program burning.

Windows 10, Arduino IDE image

Manjaro kernel 5.15 LTS, Arduino IDE image