Hello,

I recall vaguely that someone has written about replacing the PICKit1 
controller with a PIC18F USB controller. Anyway I can't remember any 
result mentioned here.

Has anyone done it?

I'm on my way doing this and I believe I'm just a step away from 
completing it. I would like to discuss with anyone who did/do the 
same.

Points of discussion are:

1) What the language used for implement USB interface? ASM or USB 
framework in C18 provided by Microchip, or any other language?

2) PID control for Vpp. Again what is the language used?

3) ICSP implemention: again what's the language used?

I'm using the C18 framework for the USB interface. For Vpp PID 
control, I have ported the ASM source for PIC16C745 to PIC18F2550. Now 
the tricky part is I yet to decide to port the ASM ICSP protocol to 
PIC18 instructions, or rewriting it in C18. Both method will have its 
pros and cons. I would like to hear from those who have done this.

Thanks & best regards,
WH Tan 


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