/********************************************************************
For ARDUINO IDE
Upgrade LedControlMS library to support VBLUno boards of VNG
Functions: Display many LED 7 SEG or LED MATRIX via Serial SPI interface with ic MAX7219 or MAX7221
The additional code is written by VNGIoTLab
Test history:
- 8/2017: Led Matrix (https://iotmaker.vn/module-led-matrix-max7219.html)
Informations:
https://vngiotlab.github.io/vbluno/
*********************************************************************/