update PlatformIO
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#include <Arduino.h>
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#include <BleKeyboard.h>
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// --- Pin-Definitionen ---
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#define PIN_HOOK 18 // GRÜN: HIGH = Hörer abgehoben, LOW = aufgelegt
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#define PIN_DIAL 19 // WEISS: HIGH bei Drehung, fallende Flanken = Impulse
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// --- Hardware & Timing-Konstanten ---
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#define DEBOUNCE_MS 30 // Entprellzeit für Impulse (ms)
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#define DIGIT_TIMEOUT_MS 350 // Pause nach Drehung, bis Ziffer erkannt ist (ms)
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#define COMPLETE_DIAL_TIMEOUT 2500 // Pause nach letzter Ziffer, bis Rufnummer komplett ist (ms)
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// --- BLE Keyboard Instanz ---
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BleKeyboard bleKeyboard("FeTAp 791 Telefon", "Deutsche Bundespost", 100);
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// --- Interrupt-Variablen (müssen volatile sein!) ---
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volatile int pulseCount = 0;
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volatile unsigned long lastPulseTime = 0;
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volatile bool isDialing = false;
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// --- Hauptprogramm-Variablen ---
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bool bleConnectedLastState = false;
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bool hookLastState = false;
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String dialedNumber = "";
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unsigned long lastDigitCompletedTime = 0;
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bool waitingForCompleteNumber = false;
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// -------------------------------------------------------------------
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// Interrupt Service Routine (ISR) für die fallende Flanke
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// -------------------------------------------------------------------
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// 'IRAM_ATTR' sorgt dafür, dass dieser Code im schnellen RAM des ESP32 liegt
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void IRAM_ATTR handleDialPulse() {
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unsigned long currentMillis = millis();
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// Entprellung direkt im Interrupt:
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// Nur zählen, wenn der letzte Impuls länger als DEBOUNCE_MS her ist
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if ((currentMillis - lastPulseTime) > DEBOUNCE_MS) {
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pulseCount++;
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isDialing = true;
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lastPulseTime = currentMillis;
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}
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}
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void setup() {
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Serial.begin(115200);
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delay(1000);
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Serial.println("\n=========================================");
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Serial.println("FeTAp 791 - ESP32 mit Hardware-Interrupt");
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Serial.println("=========================================");
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pinMode(PIN_HOOK, INPUT_PULLDOWN);
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pinMode(PIN_DIAL, INPUT_PULLDOWN);
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// --- Hardware-Interrupt konfigurieren ---
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// Löst 'handleDialPulse()' EXAKT beim Übergang von HIGH nach LOW aus!
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attachInterrupt(digitalPinToInterrupt(PIN_DIAL), handleDialPulse, FALLING);
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bleKeyboard.begin();
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Serial.println("[BLE] Warte auf Verbindung zum iPhone...");
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}
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void triggerIphoneShortcut(String number) {
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if (!bleKeyboard.isConnected()) {
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Serial.println("[BLE] Nicht verbunden – Kurzbefehl kann nicht gesendet werden!");
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return;
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}
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Serial.printf("[Kurzbefehl] Starte Aktion für Rufnummer: %s\n", number.c_str());
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// Nummer eintippen und mit 'Enter' bestätigen
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bleKeyboard.print(number);
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delay(100);
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bleKeyboard.write(KEY_RETURN);
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}
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void processDialedDigit(int pulses) {
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char digitChar;
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if (pulses == 10) {
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digitChar = '0';
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} else if (pulses >= 1 && pulses <= 9) {
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digitChar = '0' + pulses;
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} else {
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Serial.printf("[Wahl] Ungültige Impulsanzahl (%d) ignoriert.\n", pulses);
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return;
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}
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dialedNumber += digitChar;
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lastDigitCompletedTime = millis();
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waitingForCompleteNumber = true;
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Serial.printf("[Wahl] Ziffer: %c | Aktuelle Nummer: %s\n", digitChar, dialedNumber.c_str());
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}
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void loop() {
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unsigned long currentMillis = millis();
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// 1. Bluetooth-Verbindungsstatus
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bool isConnectedNow = bleKeyboard.isConnected();
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if (isConnectedNow && !bleConnectedLastState) {
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Serial.println("\n[BLE] >>> iPhone erfolgreich VERBUNDEN! <<<");
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bleConnectedLastState = true;
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} else if (!isConnectedNow && bleConnectedLastState) {
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Serial.println("\n[BLE] >>> Verbindung zum iPhone VERLOREN! <<<");
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bleConnectedLastState = false;
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}
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// 2. Gabelumschalter (Hook)
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bool currentHookState = digitalRead(PIN_HOOK);
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if (currentHookState != hookLastState) {
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delay(20); // Entprellen der Gabel
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currentHookState = digitalRead(PIN_HOOK);
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if (currentHookState != hookLastState) {
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hookLastState = currentHookState;
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if (currentHookState == HIGH) {
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Serial.println("\n[Hörer] ABGEHOBEN");
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dialedNumber = "";
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waitingForCompleteNumber = false;
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// Interrupt aktivieren / Zähler nullen
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pulseCount = 0;
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isDialing = false;
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} else {
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Serial.println("\n[Hörer] AUFGELEGT");
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dialedNumber = "";
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waitingForCompleteNumber = false;
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pulseCount = 0;
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isDialing = false;
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}
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}
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}
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// 3. Auswertung der Ziffern & Rufnummer (nur bei abgehobenem Hörer)
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if (hookLastState == HIGH) {
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// A) Ist die Ziffern-Drehung beendet? (Timeout seit letztem Interrupt-Impuls)
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if (isDialing && (currentMillis - lastPulseTime > DIGIT_TIMEOUT_MS)) {
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// Für die sichere Übergabe aus der ISR kurz Interrupts pausieren oder Wert kopieren
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noInterrupts();
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int currentPulses = pulseCount;
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pulseCount = 0;
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isDialing = false;
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interrupts();
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if (currentPulses > 0) {
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processDialedDigit(currentPulses);
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}
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}
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// B) Ist die komplette Rufnummer fertig gewählt? (Pause nach letzter Ziffer)
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if (waitingForCompleteNumber && (currentMillis - lastDigitCompletedTime > COMPLETE_DIAL_TIMEOUT)) {
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waitingForCompleteNumber = false;
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Serial.printf("\n[Wahl abgeschlossen] Vollständige Nummer: %s\n", dialedNumber.c_str());
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// Kurzbefehl am iPhone ausführen
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triggerIphoneShortcut(dialedNumber);
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}
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}
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}
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