Support for the Atmel/Microchip M90E26 chip as used on the WhatNick DIN Rail Energy Monitor
https://github.com/whatnick/din_meter_atm90e26
https://github.com/whatnick/din_power_atm90e26
Used in the firmware for the above device to integrate with the IRMACOS cloud service
#MODE command syntax MODE {function} [p0 [p1 [p2 [p3]]]] 1=L-gain Ch=0/1 1/4/8/16/24 2=N-gain Ch=0/1 1/2/4 3=SoftReset Ch=0/1 4=ReCalibrate Ch=0/1 5=Contrast Min<=255 Max<=255 6=Display Ch0=0/1/2 Ch1=0/1/2 7=Blanking Period<=255