ICD2 Parallel Slave Port com / USB/ new design?

[Alu-Spray]

usb to parallel slave port

Hello

I plan to redesign the ICD2 and to replace the cypress chip. Actually I do not know exactly how the communication works.

I hope I can find some people who like to work together, finding a better solution.

My somple thought is, that the serial communication must be similar to the parralel one.

Maybe there is another suitable USB Device Chip e.g. FTDI245(I know it is a passive one, uC has to be active, doesnt work here), the Printer Port with a special driver,...

Well, I woult like to collect some Information about it here.


Sebastian

P.S. Especially the function of RB0, how does it work?

Must be a Parallel slave port communication with Handschake, or something like that.

 

[blastronics]

why do you want to change the cypress part?

I believe that the MPLAB IDE have the driver specifically for the cypress, chnging to a new design might result to complcation in usb interface of the ICD.

why chnge?

abb

 

[Alu-Spray]

Hello

I think all it needs a Com Driver. If it works via RS 232, it should also work with a virtual com Port via USB or Prallel communication.

The version with a FTDI Chip (to Rs232) works, but the problem is the low RS232 Bitrate. So it needs a Chip that can handle the parallel communication of the ICD2.

First I try to collect some Information about that communication, and people helping to solve that Problem. Then, I'm sure, the solution is not that compicated it may seems.

A FTDI245 with a small device(PIC,..) working to gether to get an active Bus communication, could be a solution.

Sebastian

Added after 17 minutes:

P.S.

The problem with the cypress device is the availability.

 

[Kripton2035]

you cab look at patrick touzet icd2 implementation
at :

**broken link removed**

it uses a cypress chip , but with parallel usb design and is really fast enought compared to the rs232/usb converters.
the cypress chip he uses is available at radiospares for some 20 euros.