USB oscope

hi I'm working on PC based oscilloscope with USB interface.

I use a signal conditioning part + ADC + PIC18F4550 mcu. I'm not used to work with microcontrollers. I'm eager to learn the things and proceed with the work.

can u provide any suggestions for learning the basics?

and for this oscope ,on the PC side we are using VB to plot graphs..

i dunno how to get the data from usb and use it in the VB program.

any suggestions on this too is appreciated.

thanx in advance
A

 

Download the Microchip USB Framework. You will need to install the USB kernel driver and user driver. There is an example on how to interface to the user driver and send/read data from USB, it is performed through DLL function call.

You also need to write the USB firmware to run on the micro. There is also an example in there.

http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2680&dDocName=en537044

 

thank u the link was useful...

 

hye i am Has and i am doing the same project PC-based Oscilloscope. My previous senior had done single channel oscilloscope and my task now is to upgrade it to 2 channel and increase the bandwidth...