Analog/Digitale Wanduhr 1 - Homepage von Stefan Buchgeher

Analog/Digitale Wanduhr 1
Inhaltsverzeichnis
1. EINLEITUNG..........................................................................................................3
2. GRUNDLEGENDES ZU DCF.................................................................................4
3. SCHALTUNGSBESCHREIBUNG..........................................................................6
4. SOFTWAREBESCHREIBUNG ............................................................................10
4.1. Das DCF-Dekodierverfahren ..................................................................................................................11
4.2. Benötigte Register, Konstanten, Portdefinition, Makros und Tabellen..................................................12
4.3. Hauptprogramm......................................................................................................................................15
4.4. ISR (Timer 0)...........................................................................................................................................16
4.5. Unterprogramme.....................................................................................................................................18
4.5.1. INIT ..................................................................................................................................................18
4.5.2. DCFROUTINE..................................................................................................................................19
4.5.3. DCFUPSEKUNDE............................................................................................................................23
4.5.4. DCFUPMINUTE...............................................................................................................................24
4.5.5. INNEREUHR....................................................................................................................................28
4.5.6. ANZEIGE .........................................................................................................................................29
4.5.7. BCDBIN2..........................................................................................................................................29
5. NACHBAUHINWEISE..........................................................................................30
ANHANG A: SCHALTPLÄNE ......................................................................................39
ANHANG B: LISTING DES PIC-MIKROCONTROLLER (WANDUHR1.ASM).............41
ANHANG C: STÜCKLISTE...........................................................................................54
Seite 2