qk said:Hi jaydag71!
I´m also looking for a "good ehogh" ICD2 clone. I don´t care if is USB or serial.
Have you build your ICD2?
Thanks
Added after 22 minutes:
Note:
I was checking different ICD2 versions ("stolz", "nebadje", "MCUServer",... versions).
All of them are "similar". They use different parts to make the same function: switch voltages (including a "no usual" DG411 analog swich).
I´m getting crazy...
Do anybody knoks a EASY IDC version (only serial, it´s OK), made off "regular" parts, that can debug 16F877A and compatible with MPLAB?
Please, help me!
Anybody knows what is the funcion of Pin 6 (RB3 target of the ICD2) ?
I have found no info on the Microhip docs. In every example that they show this pin is not connected.
I really think the voltage doubler using the RS232 chip is brilliant.
Kripton2035 said:be aware that with serial icd2 or usb-to-serial chip like fdti chips, you get a very slow device for debugging...you must use a usb to parallel chip (cypress) to have a good speed in debug mode...
manu said:Here is a great project :
h**p://membres.lycos.fr/silicium31/Electronique/PIC/FreeIcdEnglish.htm
philba said:Kripton2035 said:be aware that with serial icd2 or usb-to-serial chip like fdti chips, you get a very slow device for debugging...you must use a usb to parallel chip (cypress) to have a good speed in debug mode...
you sure about that? I have heard of lots of people getting full speed with FTDI. I don't see how a parallel interface will work since the ICD2 firmware only works on 16F87x chips and expects a serial interface. Also, MPLAB only knows how to talk to a com (serial) port. people report it working with baudrates up to 115kb.
could you point us to more data on this point?
philba said:manu said:Here is a great project :
h**p://membres.lycos.fr/silicium31/Electronique/PIC/FreeIcdEnglish.htm
this is an ok design but a) it uses an older USB chip (newer ones like silabs 2103 and FTDI232RL don't need crystals or eeprom and are cheaper) and b) it uses transistors instead of an op amp to drive the ICSP lines. On the positive side, it uses a max 630 to generate Vpp instead of a DC-DC converter.
I think the best design would use the max630, opamp and FTDI232RL for usb.
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