commit feb8a5e2be1fe911470ee6acaae15a5c909a7b29
Author: Philipp <interfisch@gmx.net>
Date:   Sun Jun 4 15:35:25 2017 +0200

    Initial commit. Full resolution encoder and button to mqtt

diff --git a/esp-volumeknob/esp-volumeknob.ino b/esp-volumeknob/esp-volumeknob.ino
new file mode 100644
index 0000000..e448349
--- /dev/null
+++ b/esp-volumeknob/esp-volumeknob.ino
@@ -0,0 +1,81 @@
+//curl -X PUT http://192.168.123.1/config --header "Content-Type: application/json" -d '{"name":"volumeknob3", "device_id":"volumeknob3","wifi":{"ssid":"CTDO-IoT","password":"xxx"},"mqtt":{"host":"raum.ctdo.de","port":1883,"ssl":false,"auth":false},"ota":{"enabled":false}}'
+
+
+#include <Homie.h>
+#include <ArduinoOTA.h>
+#include <Encoder.h>
+
+//D4 auf ground macht led leuchten
+
+#define PIN_ENCA D6
+#define PIN_ENCB D5
+#define PIN_BTN D2
+
+#define POSITIONUPDATE 100
+
+Bounce debouncerKnobBTN = Bounce();
+int lastKnobBTN = -1;
+
+
+Encoder myEnc(PIN_ENCA, PIN_ENCB);
+long lastPositionCheck=0;
+
+long oldPosition  = 0;
+
+
+HomieNode knobNode("volumeknob", "Volumeknob");
+
+
+void loopHandler() {
+
+  int valueKnobBTN = debouncerKnobBTN.read();
+  if (valueKnobBTN != lastKnobBTN) {
+     Homie.getLogger() << "KnobBTN is now " << (valueKnobBTN ? "open" : "close") << endl;
+     knobNode.setProperty("btnknob").send(valueKnobBTN ? "false" : "true");
+     lastKnobBTN = valueKnobBTN;
+  }
+  
+
+  long newPosition = myEnc.read()/4;
+  if (lastPositionCheck+POSITIONUPDATE < millis() && newPosition != oldPosition) {
+    long positiondiff=newPosition-oldPosition;
+    oldPosition = newPosition;
+    Homie.getLogger() << "posdiff= " << positiondiff << endl;
+    knobNode.setProperty("encoder").send(String(positiondiff));
+    lastPositionCheck=millis();
+  }
+
+  
+  
+
+  ArduinoOTA.handle();
+  
+}
+
+
+void setup() {
+  Serial.begin(115200);
+  Serial << endl << endl;
+  
+  pinMode(PIN_BTN, INPUT_PULLUP);
+  debouncerKnobBTN.attach(PIN_BTN);
+  debouncerKnobBTN.interval(50);
+
+  
+ 
+  Homie_setFirmware("volumeknob", "0.1.0");
+  Homie.setResetTrigger(PIN_BTN, LOW, 20000);  // BTN0 = Flash = PIN_BTN set to 20sec
+  Homie.setLoopFunction(loopHandler);
+
+  knobNode.advertise("encoder");
+  knobNode.advertise("btnknob");
+ 
+  Homie.setup();
+  ArduinoOTA.setHostname(Homie.getConfiguration().deviceId);
+  ArduinoOTA.begin();
+}
+
+void loop() {
+  Homie.loop();
+  debouncerKnobBTN.update();
+}