adding Trigger for Steammode

Steamswitch has now 3 modes:
off, switch or trigger
removed double pinmode declaration for Steamswitch

src/main.cpp

@@ -611,6 +611,7 @@ void refreshTemp() {
 
 #include "brewvoid.h"
 #include "powerswitchvoid.h"
+#include "steamswitchvoid.h"
 #include "scalevoid.h"
 
 /**
@@ -857,15 +858,6 @@ float filterPressureValue(float input) {
  * @brief steamON & Quickmill
  */
 void checkSteamON() {
-    // check digital GIPO
-    if (digitalRead(PIN_STEAMSWITCH) == HIGH) {
-        steamON = 1;
-    }
-
-    // if activated via web interface then steamFirstON == 1, prevent override
-    if (digitalRead(PIN_STEAMSWITCH) == LOW && steamFirstON == 0) {
-        steamON = 0;
-    }
 
     // monitor QuickMill thermoblock steam-mode
     if (machine == QuickMill) {
@@ -2016,14 +2008,18 @@ void setup() {
     pinMode(PIN_VALVE, OUTPUT);
     pinMode(PIN_PUMP, OUTPUT);
     pinMode(PIN_HEATER, OUTPUT);
-    pinMode(PIN_STEAMSWITCH, INPUT);
     digitalWrite(PIN_VALVE, relayOFF);
     digitalWrite(PIN_PUMP, relayOFF);
     digitalWrite(PIN_HEATER, LOW);
 
     // IF POWERSWITCH is connected
     if (POWERSWITCHTYPE > 0) {
-        pinMode(PIN_POWERSWITCH, INPUT);
+        pinMode(PIN_POWERSWITCH, INPUT_PULLDOWN);
+    }
+
+    // IF STEAMSWITCH is connected
+    if (STEAMSWITCHTYPE > 0) {
+        pinMode(PIN_STEAMSWITCH, INPUT_PULLDOWN);
     }
 
     // IF Voltage sensor selected
@@ -2038,8 +2034,6 @@ void setup() {
         pinMode(PIN_STATUSLED, OUTPUT);
     }
 
-    pinMode(PIN_STEAMSWITCH, INPUT_PULLDOWN);
-
     #if OLED_DISPLAY != 0
         u8g2.setI2CAddress(oled_i2c * 2);
         u8g2.begin();
@@ -2072,8 +2066,7 @@ void setup() {
             mqtt.setServer(mqtt_server_ip, mqtt_server_port);
             mqtt.setCallback(mqtt_callback);
             checkMQTT();
-            #if MQTT_HASSIO_SUPPORT == 1
-            // Send Home Assistant MQTT discovery messages
+            #if MQTT_HASSIO_SUPPORT == 1  // Send Home Assistant MQTT discovery messages
             sendHASSIODiscoveryMsg();
             #endif
         }
@@ -2239,11 +2232,13 @@ void looppid() {
     checkSteamON();
     setEmergencyStopTemp();
     checkpowerswitch();
-    handleMachineState();
+    checksteamswitch();
 
     if (standbyModeOn && machineState != kStandby) {
         updateStandbyTimer();
     }
+
+    handleMachineState();      // update machineState
 
     if (INFLUXDB == 1  && offlineMode == 0 ) {
         sendInflux();

src/steamswitchvoid.h

@@ -0,0 +1,61 @@
+/**
+ * @file steamswitchvoid.h
+ *
+ * @brief
+ */
+
+/**
+ * @brief Digtalswitch input pin for STEAM SWITCH
+ */
+
+int laststeamswitchTrigger = LOW;                   // the previous reading from the input pin
+int buttonStateSteamTrigger;                        // the current reading from the input pin
+unsigned long lastDebounceTimeSteamTrigger = 0;     // the last time the output pin was toggled
+unsigned long debounceDelaySteamTrigger = 50;       // the debounce time; increase if the output flickers
+
+void checksteamswitch() {
+    #if STEAMSWITCHTYPE == 1
+        // Set steamON to 1 when steamswitch is HIGH
+        if (digitalRead(PIN_STEAMSWITCH) == HIGH) {
+            steamON = 1;
+        } 
+
+         // if activated via web interface then steamFirstON == 1, prevent override
+        if (digitalRead(PIN_STEAMSWITCH) == LOW && steamFirstON == 0) {
+            steamON = 0;
+        }
+    #endif
+
+    #if STEAMSWITCHTYPE == 2  // TRIGGER
+        int reading = digitalRead(PIN_STEAMSWITCH);
+
+        if (reading != laststeamswitchTrigger) {
+            // reset the debouncing timer
+            lastDebounceTimeSteamTrigger = millis();
+        }
+
+        if ((millis() - lastDebounceTimeSteamTrigger) > debounceDelaySteamTrigger) {
+            // whatever the reading is at, it's been there for longer than the debounce
+            // delay, so take it as the actual current state:
+
+            // if the button state has changed:
+            if (reading != buttonStateSteamTrigger) {
+                buttonStateSteamTrigger = reading;
+
+                // only toggle heating power if the new button state is HIGH
+                if (buttonStateSteamTrigger == HIGH) {
+                    if (steamON == 0) {
+                        Serial.println("Turn Steam ON");
+                        steamON = 1;
+                    } else {
+                        Serial.println("Turn Steam OFF");
+                        steamON = 0;
+                    }
+                }
+            }
+        }
+
+        laststeamswitchTrigger = reading;
+
+    #endif
+}

src/userConfig_sample.h

@@ -57,6 +57,7 @@ enum MACHINE {
 #define BREWDETECTION 0            // 0 = off, 1 = Software (Onlypid 1), 2 = Hardware (Onlypid 0), 3 = Sensor/Hardware for Only PID
 #define BREWSWITCHTYPE 1           // 1 = normal Switch, 2 = Trigger Switch
 #define POWERSWITCHTYPE 0          // 0 = no switch connected, 1 = normal Switch, 2 = Trigger Switch
+#define STEAMSWITCHTYPE 0          // 0 = no switch connected, 1 = normal Switch, 2 = Trigger Switch
 #define TRIGGERTYPE HIGH           // LOW = low trigger, HIGH = high trigger relay for pump & valve
 #define VOLTAGESENSORTYPE HIGH     // BREWDETECTION 3 configuration
 #define PINMODEVOLTAGESENSOR INPUT // Mode INPUT_PULLUP, INPUT or INPUT_PULLDOWN_16 (Only Pin 16)