Quote:
Originally Posted by inuxy
I have one of the kindles with the 2.5mm port. Is there any way to issue serial commands to this?
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AFAIK the headphone jack's only INPUT feature is "insertion" and "removal" events (which just happen to generate keycodes on a K3, according to the "waitforkey" program). Otherwise it is just analog sound output on that jack.
If you really feel up to opening the kindle and soldering wires to it (or to the special micro plug it needs to use its serial connector), then you can do 1.8v TTL serial I/O if you really want to. But that port is also used to show syslog events, so your microprocessor would have to deal with all that extra output (or could just ignore it). Stuff sent to that port would also be sent to the serial "console", so you would need to reconfigure that serial port com device to use it for a dedicated application.