add software debounce

main.ino

@@ -4,15 +4,15 @@
 #include <ArtronShop_SHT3x.h>
 
 #include <SPI.h>
-#include <Adafruit_GFX.h> 
+#include <Adafruit_GFX.h>
 #include <Adafruit_ST7735.h>
 
-ArtronShop_SHT3x sht3x(0x44, &Wire); 
+ArtronShop_SHT3x sht3x(0x44, &Wire);
 
-#define TFT_CS        10
-#define TFT_RST        9
-#define TFT_DC         8
-Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST); // Set HW SPI pins
+#define TFT_CS 10
+#define TFT_RST 9
+#define TFT_DC 8
+Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);  // Set HW SPI pins
 
 #define BACKGROUND_COLOUR ST77XX_BLACK
 #define PRIMARY_FOREGROUND_COLOUR tft.color565(187, 0, 255)
@@ -20,7 +20,7 @@ Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST); // Set HW SPI pi
 
 const int buttonPin = 16;
 
-const int AMOUNT_DATAPOINTS = 30; // ~120 max on Arduino Nano (2kB SRAM)
+const int AMOUNT_DATAPOINTS = 30;  // ~120 max on Arduino Nano (2kB SRAM)
 const float WAIT_TIME = 60;
 
 class DataStorage {
@@ -46,12 +46,14 @@ public:
   }
 
   float getDataByIndex(int logicalIndex) {
-    if(logicalIndex < 0 || logicalIndex >= this->rCount) return 0;
-    int realIndex = (this->rIndex + this->MAX_DATA_POINTS - this->rCount + logicalIndex) % this->MAX_DATA_POINTS; // pain
+    if (logicalIndex < 0 || logicalIndex >= this->rCount) return 0;
+    int realIndex = (this->rIndex + this->MAX_DATA_POINTS - this->rCount + logicalIndex) % this->MAX_DATA_POINTS;  // pain
     return this->data[realIndex];
   }
 
-  int getCursor() const { return this->rCount; }
+  int getCursor() const {
+    return this->rCount;
+  }
 
   float getMaxDataPoint() {
     if (this->rCount == 0) return 0;
@@ -82,7 +84,9 @@ public:
     return sum / this->rCount;
   }
 
-  String getUnit() { return this->UNIT; }
+  String getUnit() {
+    return this->UNIT;
+  }
 };
 
 class Element {
@@ -110,7 +114,7 @@ public:
 };
 
 class MaxAvgMinElement : public Element {
-  public:
+public:
   using Element::Element;
   void render() override {
     if (this->DRAW_BOARDER) this->drawBoarder();
@@ -130,7 +134,6 @@ class MaxAvgMinElement : public Element {
     tft.print(F("Min: "));
     tft.print(this->data.getMinDataPoint(), 1);
     tft.print(unit);
-
   };
 };
 
@@ -144,7 +147,9 @@ private:
     return X + 2 + (int)(i * (this->WIDTH - 3) / (this->AMOUNT_DATAPOINTS - 1));
   }
 
-  int getScaledY(float value) { return this->getScaledY(value, this->data.getMinDataPoint(), this->data.getMaxDataPoint()); }; // OOP is soo cool
+  int getScaledY(float value) {
+    return this->getScaledY(value, this->data.getMinDataPoint(), this->data.getMaxDataPoint());
+  };  // OOP is soo cool
 
   int getScaledY(float value, float minY, float maxY) {
     if (maxY - minY == 0) return this->Y + this->HEIGHT / 2;
@@ -163,7 +168,7 @@ public:
 
     int count = this->data.getCursor();
     if (count == 0) return;
-    
+
     const float minY = this->data.getMinDataPoint();
     const float maxY = this->data.getMaxDataPoint();
 
@@ -187,28 +192,30 @@ class Screen {
 protected:
   Element** elements;
 public:
-  Screen(Element** elems) : elements(elems){}; 
-  void draw(){
-    for(int i = 0; this->elements[i] != nullptr; i++) {
+  Screen(Element** elems)
+    : elements(elems){};
+  void draw() {
+    for (int i = 0; this->elements[i] != nullptr; i++) {
       this->elements[i]->render();
     };
   };
 };
 
 class DisplayConfig {
-  private:
+private:
   Screen** screens;
   int screenIndex;
   int screenCount;
-  
-  public:
-  DisplayConfig(Screen** screens) : screens(screens), screenIndex(0), screenCount(0){
+
+public:
+  DisplayConfig(Screen** screens)
+    : screens(screens), screenIndex(0), screenCount(0) {
     while (this->screens[this->screenCount] != nullptr) this->screenCount++;
     tft.initR(INITR_MINI160x80);
     tft.setRotation(1);
     tft.fillScreen(BACKGROUND_COLOUR);
   };
-  Screen* applyScreen(int index){
+  Screen* applyScreen(int index) {
     this->screenIndex = index;
     tft.fillScreen(BACKGROUND_COLOUR);
     return this->screens[index];
@@ -218,17 +225,23 @@ class DisplayConfig {
     return this->applyScreen(this->screenIndex);
   }
 
-  Screen* getCurrentScreen() {return this->screens[this->screenIndex];}
-  Screen* getCurrentScreenIndex() {return this->screenIndex;}
-
+  Screen* getCurrentScreen() {
+    return this->screens[this->screenIndex];
+  }
+  Screen* getCurrentScreenIndex() {
+    return this->screenIndex;
+  }
 };
 
 
 unsigned long previousMillis = -1000000000;
+unsigned long lastDebounceTime = 0;
+unsigned long debounceDelay = 50;
 bool buttonPressedLastCycle = false;
 bool sht3xErrorLastCycle = false;
 
 
+
 // CONFIG START
 DataStorage* tempData;
 DataStorage* humData;
@@ -274,7 +287,7 @@ void setup() {
   screenBigHum = new Screen(elemBigArrHum);
 
   // Screen 'collections' / arrays: Arguments: Array containing pointers to screens, nullptr must be at the end.
-  static Screen* screenArr[] = { screenTemp, screenHum, screenBigTemp, screenBigHum, nullptr};
+  static Screen* screenArr[] = { screenTemp, screenHum, screenBigTemp, screenBigHum, nullptr };
 
   // Config. Arguments: A screen array.
   config = new DisplayConfig(screenArr);
@@ -312,7 +325,7 @@ void loop() {
 
       tempData->addData(temp);
       humData->addData(hum);
-      
+
 
       currentScreen->draw();
 
@@ -330,15 +343,17 @@ void loop() {
       tft.print(F("SENSOR\nREAD\nERROR"));
       delay(500);
       Wire.begin();
-      sht3x.begin(); 
+      sht3x.begin();
       sht3xErrorLastCycle = true;
     }
   }
-  if (digitalRead(buttonPin)){
-      if (!buttonPressedLastCycle){
-        config->cycleScreen()->draw();
-        buttonPressedLastCycle = true;
-      }
+
+  if (digitalRead(buttonPin)) {
+    if (!buttonPressedLastCycle && millis() - lastDebounceTime > debounceDelay) {
+      config->cycleScreen()->draw();
+      buttonPressedLastCycle = true;
+      lastDebounceTime = millis();
+    }
   } else {
     buttonPressedLastCycle = false;
   }