JJZolx wrote: > $23? What would a built-in IR receiver add to the cost of the > Squeezeboard?- RAW IR receivers only cost a few dollars, the problem is getting them into the computer and a linux driver to talk to them. A raw IR receiver doesn't send out messages, its a complex stream of high frequency pulses, something has to read those pulses and decode them into a "key code". It can be done with interrupts on a processor, but its a real waste of compute power to do that with our main ARM processor.
The Touch did it with a separate processor with it's own firmware that just did the IR decode. An FPGA could do it, but either way it still has to get into the processor somehow and the processor has to have a driver of some sort to talk to how ever it is connected. In this day and age it is just so much easier to do stuff like that with USB. The processor knows how to talk to it and drivers already exist to talk to several different USB IR receivers. If we are going to put an IR receiver on the front panel, I would prefer to do it with a USB receiver and just add another micro USB connector on the board, I'm already putting a USB hub on the board, we just add another port. John S. ------------------------------------------------------------------------ JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=98544 _______________________________________________ unix mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/unix
