In SX Microcontrollers, SX/B Compiler and SX-Key Tool, dkemppai wrote:

[quote="Robosoft"]
Ok now we are cooking on gas.
 

The USB2Serial Dongle seems to have rather a large amount of components on it  (for me that is).

 

I was reading up on the usb-serial chip, and it mentions that the new ones have a built in eprom and OSC.

 

Would that eliminate some of the bits off this design?

 

Im guessing the eprom is used to store the USB Product ID ?  -  if so how is that bit programmed.

 

 
[/quote]I have not played with the new ones yet, but I use the FTDI chips quite a bit. I prefer to use the FT245 series of chips (Parallel interface to the SX). 
 

The throughput is very good with these chips. I've been able to transfer 700kB per seconds (Kilobytes, not kilobits). Programming the eeprom is a little more difficult if you want to write your own program, but luckily, FTDI provides an program for doing so free of charge ([url=http://www.ftdichip.com/Resources/Utilities.htm). Look at the program]http://www.ftdichip.com/Resources/Utilities.htm). Look at the program[/url] Mprog.

 

Be careful playing with the pid/vid. You can do so as a hobbiest on your own pc, but I would not recommend selling anything with PID/VID that you don't own (or have rights to!) Also, if you use anything but the default pid/vid, you will have to rewrite the .inf file supplied with ftdi drivers to allow windows to load the drivers for the hardware. If you program a PID/VID that you don't have drivers ready for, it can be a little tricky loading the drivers (that you have to modify) to reprogram the PID/VID to something that the default drivers will recognize...    ...but again, I believe FTDI has a program to help you out there too...

 

Anyway, I'd recommend the FTDI stuff to anyone who wants to talk to a PC via USB. They work very well for that. They are capible of some very high data rates. 

 

-Dan

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