In der Variante 3 hat die Funkuhr zwei Controller,
einen für die flimmerfreie Anzeige und einen für die störungsfreie Erfassung des DCF Signals. Die Datenübertragung erfolg seriell von TX nach RX
This commit is contained in:
145
Coprozessor_DCF77.ino
Normal file
145
Coprozessor_DCF77.ino
Normal file
@ -0,0 +1,145 @@
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/* Das Programm dekodiert die DCF77 Zeit,
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macht die Paritätsprüfung und
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schickt die vier benötigten Ziffern für die Zeitanzeige
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als serielle Daten über den TX Pin 1 an den Anzeigecontroller.
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Datengeschwindigkeit: 9600 Baud
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Wenn ein gültiges Signal gesendet wurde, gibt es eine Pause von 30 Minuten,
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in dieser Zeit wird der DCF Empfänger an Pin 6 abgeschaltet.
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mit Hilfe von: https://wolles-elektronikkiste.de/dcf77-funkuhr
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30.04.2025
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*/
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#include <util/parity.h> //comment out if you don't use an AVR MCU
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#define dcfOnOut 6
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int interruptPin = 2;
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volatile unsigned long lastInt = 0;
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volatile unsigned long long currentBuf = 0;
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volatile byte bufCounter;
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volatile bool parityStat = 0;
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volatile byte dcf77MinuteEiner = 0;
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volatile byte dcf77MinuteZehner = 0;
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volatile byte dcf77HourEiner = 0;
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volatile byte dcf77HourZehner = 0;
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void setup() {
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Serial.begin(9600);
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pinMode(dcfOnOut, OUTPUT);
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digitalWrite(dcfOnOut, HIGH);
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pinMode(interruptPin, INPUT);
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attachInterrupt(digitalPinToInterrupt(interruptPin), DCF77_ISR, CHANGE);
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}
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void loop() {
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if (parityStat == 1) {
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delay(100);
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Serial.print(dcf77HourZehner);
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Serial.print(",");
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Serial.print(dcf77HourEiner);
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Serial.print(",");
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Serial.print(dcf77MinuteZehner);
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Serial.print(",");
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Serial.print(dcf77MinuteEiner);
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delay(100);
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digitalWrite(dcfOnOut, LOW);
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parityStat = 0;
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delay(1800000); // 30 Minuten, 15 Minuten Wartezeit: 900000
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digitalWrite(dcfOnOut, HIGH);
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}
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}
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/*************************************************************************
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lesen des dcf Signals am Pin 2
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**************************************************************************/
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void DCF77_ISR() { //
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unsigned int dur = 0;
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dur = millis() - lastInt;
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if (digitalRead(interruptPin)) {
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if (dur > 1500) {
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unsigned long highBuf = (currentBuf >> 32) & 0x7FFFFFF;
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unsigned long lowBuf = (currentBuf & 0xFFFFFFFF);
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bufCounter = 0;
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evaluateSequence();
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currentBuf = 0;
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}
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}
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else {
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if (dur > 150) {
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currentBuf |= ((unsigned long long)1 << bufCounter);
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}
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bufCounter++;
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}
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lastInt = millis();
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}
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/**************************************************************************
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Umwandlung Binärcode in Ziffern
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*************************************************************************/
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void evaluateSequence() {
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parityStat = 1;
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byte dcf77Year = (currentBuf >> 50) & 0xFF; // year = bit 50-57
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byte dcf77Month = (currentBuf >> 45) & 0x1F; // month = bit 45-49
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byte dcf77DayOfWeek = (currentBuf >> 42) & 0x07; // day of the week = bit 42-44
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byte dcf77DayOfMonth = (currentBuf >> 36) & 0x3F; // day of the month = bit 36-41
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byte dcf77Hour = (currentBuf >> 29) & 0x3F;
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dcf77HourEiner = (currentBuf >> 29) & 0xF; // hour = bit 29-34, 6 bit
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dcf77HourZehner = (currentBuf >> 33) & 0x3; // hour = bit 29-34, 6 bit
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byte dcf77Minute = (currentBuf >> 21) & 0x7F;
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dcf77MinuteEiner = (currentBuf >> 21) & 0xF; // minute = 21-27, 7 bit
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dcf77MinuteZehner = (currentBuf >> 25) & 0x7; // minute = 21-27, 7 bit
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bool parityBitMinute = (currentBuf >> 28) & 1;
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bool parityBitHour = (currentBuf >> 35) & 1;
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bool parityBitDate = (currentBuf >> 58) & 1;
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/***************************************************************************
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Paritätsprüfung
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***************************************************************************/
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if ((parity_even_bit(dcf77Minute)) != parityBitMinute) {
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parityStat = 0;
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}
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if ((parity_even_bit(dcf77Hour)) != parityBitHour) {
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parityStat = 0;
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}
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if (((parity_even_bit(dcf77DayOfMonth) + parity_even_bit(dcf77DayOfWeek)
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+ parity_even_bit(dcf77Month) + parity_even_bit(dcf77Year)) % 2) != parityBitDate)
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{
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parityStat = 0;
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}
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if (dcf77MinuteEiner > 9) {
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parityStat = 0;
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}
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if (dcf77MinuteZehner > 5) {
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parityStat = 0;
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}
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if (dcf77HourEiner > 9) {
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parityStat = 0;
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}
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if (dcf77HourZehner > 2) {
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parityStat = 0;
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}
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if (dcf77Hour == 0 && dcf77Minute == 0) {
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parityStat = 0;
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}
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}
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unsigned int rawByteToInt(byte raw) {
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return ((raw >> 4) * 10 + (raw & 0x0F));
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}
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333
Uhr_DCF77_5Volt_V3.ino
Normal file
333
Uhr_DCF77_5Volt_V3.ino
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@ -0,0 +1,333 @@
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/* Programm zum DCF77 Empfang für atmega 328p
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Sekunden Timer ISR
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5 Volt Variante für Peripherie
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Datenempfang vom Coprozessor
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03.05.2025
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*/
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#define bcdA 5 // D5
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#define bcdB 6 // D6
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#define bcdC 7 // D7
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#define bcdD 8 // D8
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#define displayPosition1 9 // D9
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#define displayPosition2 10 // D10
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#define displayPosition3 3 // D3
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#define displayPosition4 4 // D4
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byte selectZiffer = 0;
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byte displayPosition = 0;
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volatile int dcf77MinuteEiner = 0;
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volatile int dcf77MinuteZehner = 0;
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volatile int dcf77HourEiner = 0;
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volatile int dcf77HourZehner = 0;
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volatile byte noSignalMinutenCounter = 0;
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volatile byte noSignalStundenCounter = 0;
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volatile byte einerStunden = 7;
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volatile byte zehnerStunden = 1;
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volatile byte einerMinuten = 0;
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volatile byte zehnerMinuten = 1;
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volatile byte offlineCounter = 0;
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volatile bool parityStat = 0;
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void setup() {
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pinMode(bcdA, OUTPUT);
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pinMode(bcdB, OUTPUT);
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pinMode(bcdC, OUTPUT);
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pinMode(bcdD, OUTPUT);
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pinMode(displayPosition1, OUTPUT);
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pinMode(displayPosition2, OUTPUT);
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pinMode(displayPosition3, OUTPUT);
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pinMode(displayPosition4, OUTPUT);
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digitalWrite(bcdA, HIGH);
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digitalWrite(bcdB, HIGH);
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digitalWrite(bcdC, HIGH);
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digitalWrite(bcdD, HIGH);
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digitalWrite(displayPosition1, HIGH);
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digitalWrite(displayPosition2, HIGH);
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digitalWrite(displayPosition3, HIGH);
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digitalWrite(displayPosition4, HIGH);
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Serial.begin(9600);
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// Timer1 setzen (1 Sekunde = 49911, zwei Sekunden = 34286)
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TCCR1A = 0x00;
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TCCR1B = (1<<CS12) | (1<<CS10);
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TIMSK1 = (1<<TOIE1);
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TCNT1 = 49911;
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}
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ISR(TIMER1_OVF_vect){
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TCNT1 = 49911;
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offlineCounter++;
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if (offlineCounter > 59){
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offlineCounter = 0;
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if (parityStat == 0) {
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byte m = zehnerMinuten * 10;
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noSignalMinutenCounter = m + einerMinuten;
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byte s = zehnerStunden * 10;
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noSignalStundenCounter = s + einerStunden;
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noSignalMinutenCounter++;
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if (noSignalMinutenCounter > 59) {
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noSignalMinutenCounter = 0;
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noSignalStundenCounter++;
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if (noSignalStundenCounter > 23) {
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noSignalStundenCounter = 0;
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}
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}
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einerStunden = noSignalStundenCounter % 10; // zerlegt die Zahl in Einer
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zehnerStunden = (noSignalStundenCounter / 10) % 10; // und Zehner
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einerMinuten = noSignalMinutenCounter % 10;
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zehnerMinuten = (noSignalMinutenCounter / 10) % 10;
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}
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else {
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einerMinuten = dcf77MinuteEiner;
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zehnerMinuten = dcf77MinuteZehner;
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einerStunden = dcf77HourEiner;
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zehnerStunden = dcf77HourZehner;
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parityStat = 0;
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}
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}
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}
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void initDisplay() {
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// Die Schleife ruft nacheinander die Anzeigestellen auf und übergibt die Ziffern
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for (displayPosition = 1; displayPosition <= 4; displayPosition++) {
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if (displayPosition == 1) {
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digitalWrite(displayPosition1, HIGH);
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digitalWrite(displayPosition2, LOW);
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digitalWrite(displayPosition3, LOW);
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digitalWrite(displayPosition4, LOW);
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if (zehnerStunden == 0) {
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selectZiffer = 0;
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}
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if (zehnerStunden == 1) {
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selectZiffer = 1;
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}
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if (zehnerStunden == 2) {
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selectZiffer = 2;
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}
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}
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if (displayPosition == 2) {
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digitalWrite(displayPosition1, LOW);
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digitalWrite(displayPosition2, HIGH);
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digitalWrite(displayPosition3, LOW);
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digitalWrite(displayPosition4, LOW);
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if (einerStunden == 0) {
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selectZiffer = 0;
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}
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if (einerStunden == 1) {
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selectZiffer = 1;
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}
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if (einerStunden == 2) {
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selectZiffer = 2;
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}
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if (einerStunden == 3) {
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selectZiffer = 3;
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}
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if (einerStunden == 4) {
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selectZiffer = 4;
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}
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if (einerStunden == 5) {
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selectZiffer = 5;
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}
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if (einerStunden == 6) {
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selectZiffer = 6;
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}
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if (einerStunden == 7) {
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selectZiffer = 7;
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}
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if (einerStunden == 8) {
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selectZiffer = 8;
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}
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if (einerStunden == 9) {
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selectZiffer = 9;
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}
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}
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if (displayPosition == 3) {
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digitalWrite(displayPosition1, LOW);
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digitalWrite(displayPosition2, LOW);
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digitalWrite(displayPosition3, HIGH);
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digitalWrite(displayPosition4, LOW);
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if (zehnerMinuten == 0) {
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selectZiffer = 0;
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}
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if (zehnerMinuten == 1) {
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selectZiffer = 1;
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}
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if (zehnerMinuten == 2) {
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selectZiffer = 2;
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}
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if (zehnerMinuten == 3) {
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selectZiffer = 3;
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}
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if (zehnerMinuten == 4) {
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selectZiffer = 4;
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}
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if (zehnerMinuten == 5) {
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selectZiffer = 5;
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}
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}
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if (displayPosition == 4) {
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digitalWrite(displayPosition1, LOW);
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digitalWrite(displayPosition2, LOW);
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digitalWrite(displayPosition3, LOW);
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digitalWrite(displayPosition4, HIGH);
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if (einerMinuten == 0) {
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selectZiffer = 0;
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}
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if (einerMinuten == 1) {
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selectZiffer = 1;
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}
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if (einerMinuten == 2) {
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selectZiffer = 2;
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}
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if (einerMinuten == 3) {
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selectZiffer = 3;
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}
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if (einerMinuten == 4) {
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selectZiffer = 4;
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}
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if (einerMinuten == 5) {
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selectZiffer = 5;
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}
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if (einerMinuten == 6) {
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selectZiffer = 6;
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}
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if (einerMinuten == 7) {
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selectZiffer = 7;
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}
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if (einerMinuten == 8) {
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selectZiffer = 8;
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}
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if (einerMinuten == 9) {
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selectZiffer = 9;
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}
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}
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// BCD Zifferncode
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switch (selectZiffer) {
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case 0:
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digitalWrite(bcdA, LOW);
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digitalWrite(bcdB, LOW);
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digitalWrite(bcdC, LOW);
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digitalWrite(bcdD, LOW);
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break;
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case 1:
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digitalWrite(bcdA, HIGH);
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digitalWrite(bcdB, LOW);
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digitalWrite(bcdC, LOW);
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digitalWrite(bcdD, LOW);
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break;
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case 2:
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digitalWrite(bcdA, LOW);
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digitalWrite(bcdB, HIGH);
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digitalWrite(bcdC, LOW);
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digitalWrite(bcdD, LOW);
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break;
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case 3:
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digitalWrite(bcdA, HIGH);
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digitalWrite(bcdB, HIGH);
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digitalWrite(bcdC, LOW);
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digitalWrite(bcdD, LOW);
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break;
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case 4:
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digitalWrite(bcdA, LOW);
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digitalWrite(bcdB, LOW);
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digitalWrite(bcdC, HIGH);
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digitalWrite(bcdD, LOW);
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break;
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case 5:
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digitalWrite(bcdA, HIGH);
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digitalWrite(bcdB, LOW);
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digitalWrite(bcdC, HIGH);
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digitalWrite(bcdD, LOW);
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break;
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case 6:
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digitalWrite(bcdA, LOW);
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digitalWrite(bcdB, HIGH);
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digitalWrite(bcdC, HIGH);
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digitalWrite(bcdD, LOW);
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break;
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case 7:
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digitalWrite(bcdA, HIGH);
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digitalWrite(bcdB, HIGH);
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digitalWrite(bcdC, HIGH);
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digitalWrite(bcdD, LOW);
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break;
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case 8:
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digitalWrite(bcdA, LOW);
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digitalWrite(bcdB, LOW);
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digitalWrite(bcdC, LOW);
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digitalWrite(bcdD, HIGH);
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break;
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case 9:
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digitalWrite(bcdA, HIGH);
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digitalWrite(bcdB, LOW);
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digitalWrite(bcdC, LOW);
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digitalWrite(bcdD, HIGH);
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break;
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}
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// Unterdrueckung der fuehrenden Null
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if (displayPosition == 1) {
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if (selectZiffer == 0) {
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goto noTime;
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}
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}
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delayMicroseconds(2500); //Anschaltzeit der Ziffern
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noTime: {}
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}
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}
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void loop() {
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if (Serial.available()){
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dcf77HourZehner = Serial.parseInt();
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dcf77HourEiner = Serial.parseInt();
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dcf77MinuteZehner = Serial.parseInt();
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dcf77MinuteEiner = Serial.parseInt();
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String(DCFzeit) = Serial.readString();
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parityStat = 1;
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}
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initDisplay(); // zeigt die Uhrzeit an
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}
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Reference in New Issue
Block a user