Upgrading OpenEVSE / EmonEVSE Controller Firmware using ISP programmer

Hi Rachel,

have you get the EVSE powered on? This is the easiest way but you need to be careful :slight_smile:
If not then you need to alter the software config so the programmer board provides the power but found it was easier to just power the EVSE up.

Also the line I used was
avrdude -c stk500v2 -P COM14 -p atmega328p -U eeprom:r:oldevse.hex:i

but the COM14 may change depending what port your PC allocates to the programming board


avrdude -c stk500v2 -P COM14 -p atmega328p -U flash:r:oldevse1.hex:i

This makes a copy of the flash to file oldevse1.hex

Then I flashed the new one in with
avrdude -c stk500v2 -P COM14 -p atmega328p -U flash:w:openevse.hex