Hello all, I've been locked up with academic activities, and dint log onto the forum for some 2 weeks. In the mean time, I managed to:

1) Learn a new programming language called 'Euphoria', and I managed to write my own waveform drawing program under win32!


2)Fabricating a PCB, having ATmega8535, running at 8MIPS, and using 4 GPIO pins as inputs.

3)Sending the sampled values (sampling rate=3.45usec/sample) to PC using Com port, and the samples will be stored in a text file.

4)The above program will read that file, and will display the waveform.

I could get 900 samples for a period for 3.1msec, and then the hardware will send all the buffered samples to PC. This hw+sw combination, though not a complete logic analyser, does the job for me (in the Zigbee Application). Now I am thinking of using the FTDI USB chip as suggested by Richard.

Thanks for your responses and help.

Regards,
Vignesh