I'm implementing an HID class device and have based my program on the HID USB program supplied by Keil. I'm new to USB but am a fairly experienced programmer otherwise.
I have got a basic program working fine bit with single byte input and output reports. I've tested the functionality using a client called SimpleHIDWrite.exe
I need to expand both in and out reports to 8 bytes each to communicate with the host. Has anybody successfully modified this example program or does anyone have any advice on how to do it properly?
My guess is that I need to edit the report descriptor and also set up the inreport and outreport as arrays. Is there anything I need to watch out for?
My target is the LPC2141.
Any advice or information would be much appreciated!
Thanks, Gareth.
Hi Tsuneo,
Following my success earlier today I have sorted out the information requests from the host - everything seems to be working very nicely!
I'm about to start work on sending reports when information changes ... In your example snippet you show a dedicated task. I assume that it is okay to place this task pretty much anywhere?
I was going to create a task (which repeats, say every 50ms) for monitoring variable changes and place this in the main part of the application program separate from the USB parts. I assume it's okay to do this? It looks like the use of the semaphore which is set every IN request allows for 'remote' processing of the EP1.
I plan to implement this tomorrow. Any comments you might have would be very welcome!
Congratulation!! I'm glad you got good start of your USB life ;-)
> I assume that it is okay to place this task pretty much anywhere?
It's right.
Tsuneo