A/D conversion problem with 18F2455

[abdy37]

Have you ever seen how much math is involved in doing most kinds of Digital Signal Processing?
Do a search on DFT or FFT and you'll see what I mean.
What exactly do you want the end result of this project of yours to do?

I do not have too much knowledge about FFT or DFT. I have been dealing with
them just using MATLAB. There are ready commands such as fft(signal), so I do not know much of its details.
My project is PIC to PC and PC to PIC communication. I mean FuLL Duplex channel between them. But to communicate with PC I must have digital values
and not analog. That is why I want to use ADC feature of PIC 18F2455. I want to observe if I get those digital values from PORTA.1 bit by bit. This is exactly what I want to do.

[skimask]

My project is PIC to PC and PC to PIC communication. I mean FuLL Duplex channel between them. But to communicate with PC I must have digital values and not analog. That is why I want to use ADC feature of PIC 18F2455. I want to observe if I get those digital values from PORTA.1 bit by bit. This is exactly what I want to do.

So what you're saying is that you want your PC to talk to your PIC, bidirectionally.
What port do you want to use on the PC to do this? The speaker/microphone port?
You know there's fully functional serial port on the PIC18F2455, as well as most others, that is easily used to communicate with a PC, with a little bit of extra hardware. See the PBP book for more details...

[abdy37]

So what you're saying is that you want your PC to talk to your PIC, bidirectionally.
What port do you want to use on the PC to do this? The speaker/microphone port?
You know there's fully functional serial port on the PIC18F2455, as well as most others, that is easily used to communicate with a PC, with a little bit of extra hardware. See the PBP book for more details...

I am looking forward to use USB communication for that. Because the main part of the project is USB.

[skimask]

I am looking forward to use USB communication for that. Because the main part of the project is USB.

But why do you need to use the ADC of the PIC to talk to the PC?
Do a search on 'USBDemo'