Re: Homebrew USB receiver in development...

[Terry B. <te...@be...>]

Travis Tabbal wrote:
> I've got the hardware working. It's based on a PIC18F2550 and I'm 
> attempting to produce output like the UDP driver would expect. The 
> hardware seems to be working fine. I can't quite get LIRC to talk to it 
> though. I've hacked a little on a spinoff of the UDP driver with the 
> network calls replaced by serial calls I pulled from another driver. It 
> starts up, but irrecord never sees any data. If I "cat /dev/ttyACM0" I 
> can see the data scroll by. I have a windows screenshot showing the 
> device output in binary and the waveform captured with a logic analyzer 
> as well as my attempt at a driver. If someone is willing to provide some 
> guidance with integration to LIRC I would apreciate it. I plan to 
> release the project as open source and possibly sell kits or complete 
> hardware for those that don't like to solder. I also plan to add IR 
> sending support, wake-on-USB, and character LCD control.
> 
> The ZIP file is here: http://www.tabbal.net/lirc/sraw-0.01.zip
> 
> One difference to note from the UDP driver. I am outputting a 0xFFFF at 
> the end of each capture so I can see the seperate signals in the 
> datastream. I can easily remove it if it makes integration easier.
> 
> I haven't put together a schematic yet, it's all on a breadboard. But if 
> someone wants to reproduce the hardware, let me know and I'll get 
> something put together for you along with a source code archive and/or 
> HEX file.
> 
> 
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I would be interested in collaborating with you on this. I have an Intel
DG45FC motherboard based set-top box that I am having problems getting
LIRC to work on the serial port. I was thinking of designing and building
a PIC USB based IR receiver.

Cheers


Terry