The code for the PIC18F2550 has been written using Microchip C18. It was based on the PicDem USB stack from Microchip. The data is sent in blocks through interrupt read /write and the programming functions are implemented in firmware.
The Communication protocol has now moved to a separate page.
Another task of the embedded software is a voltage pump.
By toggling the lines Pump1 and Pump2, 12V for the VPP will be generated.
Loading the firmware in the PIC18F2550
The manual on how to upgrade the firmware is now included in the Installation manual