Example: DCF77 Decoder

Library: DCF77_Decoder:

The DCF77_DECODER function block checks whether or not the transmitted time signal is inverted and then waits for a marker which signals the beginning of a new time signal. The DCF77 time signal consists of 59 bits. Because one bit is transmitted per second, the function block outputs the first DATE_AND_TIME value after two minutes at the latest. The DATE_AND_TIME value is updated every minute.

Example: DCF77_Decoder_Example:

The sample project shows how to use the library with the CODESYS Control for Raspberry Pi runtime system and a DCF receiver. The output of the DCF receiver is connected to a GPIO input of the Raspberry Pi.