Finish coffee maker

firmware/button.h

@@ -0,0 +1,64 @@
+#include "debounce.h"
+
+
+enum class ButtonEvent : uint8_t {
+    NoEvent,
+    Press,
+    LongPress,
+    DoublePress,
+};
+
+// template wird komplett wegoptimiert (wie #define)
+template<uint16_t LONGPRESS_TIMEOUT, uint16_t DOUBLEPRESS_TIMEOUT>
+class Button {
+    public:
+        enum class State : uint8_t {
+            Idle,
+            Pressed,
+            LongPressed,
+            Released,
+        };
+
+
+        ButtonEvent event(RawButtonEvent result) {
+            switch(state) {
+                case State::Idle :
+                    if(result == RawButtonEvent::Pressed) {
+                        state = State::Pressed;
+                        counter = millis();
+                    }
+                    break;
+                case State::Pressed :
+                    if(result == RawButtonEvent::Released) {
+                        state = State::Released;
+                        counter = millis();
+                    } else if((uint16_t) millis() - counter >= LONGPRESS_TIMEOUT) {
+                        state = State::LongPressed;
+                        return ButtonEvent::LongPress;
+                    }
+                    break;
+                case State::Released :
+                    if(result == RawButtonEvent::Pressed) {
+                        state= State::Idle;
+                        return ButtonEvent::DoublePress;
+                    } else if((uint16_t) millis() - counter >= DOUBLEPRESS_TIMEOUT) {
+                        state = State::Idle;
+                        return ButtonEvent::Press;
+                    }
+                    break;
+                case State::LongPressed :
+                    if(result == RawButtonEvent::Released) {
+                        state = State::Idle;
+                    } else {
+                        return ButtonEvent::LongPress;
+                    }
+                    break;
+            }
+
+            return ButtonEvent::NoEvent;
+        }
+
+    private:
+        State state = State::Idle;
+        uint16_t counter = 0;
+};

firmware/debounce.h

@@ -0,0 +1,58 @@
+#ifndef _DEBOUNCE_H_
+#define _DEBOUNCE_H_
+
+
+enum class RawButtonEvent : uint8_t {
+    NoEvent,
+    Pressed,
+    Released,
+};
+
+template<uint16_t DEBOUNCE_PRESSED, uint16_t DEBOUNCE_UNPRESSED = DEBOUNCE_PRESSED>
+class Debounce {
+    public:
+        enum class State : uint8_t {
+            Unpressed,
+            UnpressedDebounced,
+            Pressed,
+            PressedDebounced,
+        };
+
+
+        RawButtonEvent event(bool pressed) {
+            switch(state) {
+                case State::Unpressed :
+                    if(pressed) {
+                        state = State::PressedDebounced;
+                        counter = millis();
+                        return RawButtonEvent::Pressed;
+                    }
+                    break;
+                case State::PressedDebounced :
+                    if((uint16_t) millis() - counter > DEBOUNCE_PRESSED) {
+                        state = State::Pressed;
+                    }
+                    break;
+                case State::Pressed :
+                    if(!pressed) {
+                        state = State::UnpressedDebounced;
+                        counter = millis();
+                        return RawButtonEvent::Released;
+                    }
+                    break;
+                case State::UnpressedDebounced :
+                    if((uint16_t) millis() - counter > DEBOUNCE_UNPRESSED) {
+                        state = State::Unpressed;
+                    }
+                    break;
+            }
+
+            return RawButtonEvent::NoEvent;
+        }
+
+    private:
+        State state = State::Unpressed;
+        uint16_t counter = 0;
+};
+
+#endif

firmware/firmware.ino

@@ -1,65 +1,101 @@
-#include <SD.h>                      // need to include the SD library
+#include <SD.h>
-//#define SD_ChipSelectPin 53  //example uses hardware SS pin 53 on Mega2560
+#include <TMRpcm.h>
-#define SD_ChipSelectPin 5  //using digital pin 4 on arduino nano 328, can use other pins
-#include <TMRpcm.h>           //  also need to include this library...
 #include <SPI.h>
 
+#include "button.h"
+#include "debounce.h"
+
+using MainButton = Button<150, 150>;
+
+#define SD_ChipSelectPin 5
+#define MainButtonPin 6
+#define CoffeeLedPin 7
+#define EegLedPin 8
+
+Debounce<20> debounce;
+MainButton button;
+
 TMRpcm tmrpcm;   // create an object for use in this sketch
 
 unsigned long time = 0;
 
 void setup(){
+    tmrpcm.speakerPin = 9;
 
-  tmrpcm.speakerPin = 9; //5,6,11 or 46 on Mega, 9 on Uno, Nano, etc
+    Serial.begin(9600);
-  //Complimentary Output or Dual Speakers:
+    Serial.println("Startshduhsd");
-  //pinMode(10,OUTPUT); Pin pairs: 9,10 Mega: 5-2,6-7,11-12,46-45 
 
-  Serial.begin(9600);
+    if (!SD.begin(SD_ChipSelectPin)) {  // see if the card is present and can be initialized:
-  //pinMode(13,OUTPUT); //LED Connected to analog pin 0
+        Serial.println("SD fail");
-  if (!SD.begin(SD_ChipSelectPin)) {  // see if the card is present and can be initialized:
+        return;   // don't do anything more if not
-    Serial.println("SD fail");  
+    } else{
-    return;   // don't do anything more if not
+        Serial.println("SD ok");
-
-  }
-  else{   
-    Serial.println("SD ok");   
-  }
-  tmrpcm.volume(2);
-  tmrpcm.play("coffee.wav"); //the sound file "music" will play each time the arduino powers up, or is reset
-}
-
-
-
-void loop(){
-  //blink the LED manually to demonstrate music playback is independant of main loop
-  if(tmrpcm.isPlaying() && millis() - time > 50 ) {      
-      //digitalWrite(13,!digitalRead(13));
-     // time = millis();    
-  }else
-  if(millis() - time > 500){     
-    //digitalWrite(13,!digitalRead(13)); 
-    //time = millis(); 
-  }
-
-
-  if(Serial.available()){    
-    switch(Serial.read()){
-    case 'c': tmrpcm.play("coffee.wav"); break;
-    case 'p': tmrpcm.pause(); break;
-    case '?': if(tmrpcm.isPlaying()){ Serial.println("A wav file is being played");} else{Serial.println("No wav file is being played");} break;
-    case 'S': tmrpcm.stopPlayback(); break;
-    case '0': tmrpcm.volume(0); break;
-    case '1': tmrpcm.volume(1); break;
-    case '2': tmrpcm.volume(2); break;
-    case '3': tmrpcm.volume(3); break;
-    case '4': tmrpcm.volume(4); break;
-    case '5': tmrpcm.volume(5); break;
-    case '6': tmrpcm.volume(6); break;
-    case '7': tmrpcm.volume(7); break;
-    case '=': tmrpcm.quality(0); break;
-    case '-': tmrpcm.quality(1); break;
-    default: break;
     }
-  }
 
+    pinMode(MainButtonPin, INPUT);
+    pinMode(CoffeeLedPin, OUTPUT);
+    pinMode(EegLedPin, OUTPUT);
+
+    digitalWrite(CoffeeLedPin, HIGH);
+
+    tmrpcm.volume(2);
+}
+
+enum class State : uint8_t {
+    Idle,
+    MakingCoffee,
+    Slowing
+};
+
+auto state = State::Idle;
+uint16_t coffeeLedTimeout = millis();
+uint16_t eegLedTimeout = millis();
+
+const uint16_t minEegLedDelay = 50;
+const uint16_t maxEegLedDelay = 500;
+uint16_t eegLedDelay = maxEegLedDelay;
+uint16_t eegLedDelayTimeout = millis();
+
+void loop() {
+    bool buttonPressed = digitalRead(MainButtonPin);
+    auto event = button.event(debounce.event(buttonPressed));
+
+    if((uint16_t) millis() - eegLedTimeout >= eegLedDelay) {
+        eegLedTimeout = millis();
+        digitalWrite(EegLedPin, !digitalRead(EegLedPin));
+    }
+
+    switch(state) {
+        case State::Idle:
+            if(event == ButtonEvent::Press || event == ButtonEvent::LongPress) {
+                tmrpcm.play("coffee.wav");
+                state = State::MakingCoffee;
+                coffeeLedTimeout = millis();
+            }
+            break;
+        case State::MakingCoffee:
+            if(!tmrpcm.isPlaying()) {
+                state = State::Slowing;
+                eegLedDelay = minEegLedDelay;
+                digitalWrite(CoffeeLedPin, HIGH);
+            } else {
+                if((uint16_t) millis() - coffeeLedTimeout >= 500) {
+                    coffeeLedTimeout = millis();
+                    digitalWrite(CoffeeLedPin, !digitalRead(CoffeeLedPin));
+                }
+            }
+            break;
+        case State::Slowing:
+            Serial.println(eegLedDelay);
+            if((uint16_t) millis() - eegLedDelayTimeout >= 300) {
+                eegLedDelayTimeout = millis();
+                if(eegLedDelay > maxEegLedDelay) {
+                    eegLedDelay = maxEegLedDelay;
+                    state = State::Idle;
+                } else {
+                    eegLedDelay = eegLedDelay * 1.1;
+                }
+            }
+            break;
+    }
 }