Objective Development Forums

Ok, for some reason it seems not all of the HID descriptor is sent. I turned on debugging, and hooked it up to an ftdi chip: 00: ff: ff: ff: ff: ff: ff: ff: ff: 1d: 80 06 00 01 00 00 40 00 dd 94 20: 4b 12 01 10 01 00 00 00 08 11 77 20: c3 42 42 31 e1 00 01 01 02 31 bf 20: 4b 00 01 3f 8f ff: ff: ff: ...

The problem is the report size is limited to 8 bytes per transfer. I'm doing much the same thing, but since I have a very limited amount of different keys, I tried to change the report descriptor to use list all the keys and then just set (on/off) per key. You can see my report descriptor here: http...

I'd say "no", as you might be unlucky and the interrupt (start of frame) comes in at the approximately same time from the two computers. According to usbdrv.h you have at most 25 cycles (@12MHz) that you can ignore the start of frame interrupt, (coming in every 1ms) and each interrupt may ...

I'm using the HIDkeys (2007.03.29) project as a base to make a MAME keyboard. After reading a lot of documentation I *think* that I know how to make a HIDkeyboard that can have 10 or more simultaneous keys (2 directions + 3 buttons per player) with a report size of 3 bytes. The problem is that the l...