dokutan / dcf77-decode

Decode the DCF77 time signal on a PC

dcf77-decode

Decode the DCF77 time signal on a PC. Tested on Linux, should work on most operating systems.

Building and usage

Compile with

gcc dcf77_decode.c -o dcf77_decode

Run with

./dcf77_decode datafile

Due to the differences in receiving hardware, the data is read from a file. If "-" is specified as the datafile, input is read from stdin.

Datafile format

• Empty line ("\n") = Missing pulse at the start of a minute
• Line only with a 1 ("1\n") = Bit 1
• Line only with a 0 ("0\n") = Bit 0

An example can be found in data-example.txt

Arduino example

The arduino_dcf77_to_serial directory contains Arduino code that can be used to send the data coming from a DCF77 receiver module over serial to a PC. In this case the serial device file (e.g. /dev/ttyUSB0) can be specified as the datafile.

License

GNU GPL v3 or later