Just another intermediate update:
1) I've pushed my current debugging code to the uart-debug branch
Simply run osmocon + layer23 and the hello_world.bin image. layer23
will send a 62 byte sized HLDC message every 10 seconds to the phone,
and various instances of the code will print what they see. The
payload of the packet is supposed to be
0a 00 00 01 02 03 04 05 06 07 00 01 02 03 04 05 06 07
00 01 02 03 04 05 06 07 00 01 02 03 04 05 06 07
00 01 02 03 04 05 06 07 00 01 02 03 04 05 06 07
00 01 02 03 04 05 06 07 00 01 02 03 04 05
but what the firmware sees is:
0a 00 02 03 04 05 06 07 02 03 04 05 06 07
02 03 04 05 06 07 02 03 04 05 06 07
02 03 04 05 06 07 02 03 04 05 06 07
02 03 04 05 06 07 02 03 04 05
So as you can see, every '00 01' sequence has been chopped out,
despite 10ms delays between the characters. If you change the
payload to not include zero-bytes, all bytes are received fine.
2) Enabling various misc UART interrupt sources and checking for error
conditions in LSR does not help
Regards,
Harald
--
- Harald Welte <laforge@gnumonks.org> http://laforge.gnumonks.org/
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