[ntp:questions] Re: AW: convert_rawdcf: parity check FAILED on my embedded Linux system
uwe_klein_habertwedt at t-online.de
Sat Oct 14 09:56:16 UTC 2006
The DCF Signals is 1 pulse every 1 second. the 59th pulse is omitted to
mark the minute transition.
Additonal information is coded into the pulselength of the second pulses.
0.1 sec for a low bit, 0.2sec for a high bit.
on a 50Baud (0.02s/bit) serial line with inverted sense this is received as
HHHHLLLLLHHHHHHHH S=StartBit, s=StopBit(s)
____S01234567s____ 0xf0 for a low bit
____S01234567s____ 0x00 for a high bit
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