esp rotary encoder

2023-01-27 09:43:10 +01:00
parent fb5197a4fa
commit 46ca7f92e9
2 changed files with 189 additions and 0 deletions
@@ -0,0 +1,118 @@
+// https://lastminuteengineers.com/rotary-encoder-arduino-tutorial/
+
+#include <Adafruit_NeoPixel.h>
+
+#define NUMPIXELS 12
+#define LEDPIN 2
+
+Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, LEDPIN, NEO_GRB + NEO_KHZ800);
+
+// Rotary Encoder Inputs
+#define CLK 8
+#define DT 9
+#define SW 10
+
+int currentStateCLK;
+int lastStateCLK;
+String currentDir = "";
+unsigned long lastButtonPress = 0;
+
+#define HUE_STEP 1200
+#define VAL_STEP 10
+
+long hue = 0;    // 0-65535 https://adafruit.github.io/Adafruit_NeoPixel/html/class_adafruit___neo_pixel.html#a1f16aee5b96e16e62598f826e292b23b
+int saturation = 0; // 0-255
+int value = 60;    // 0-255
+
+
+
+void setup() {
+  Serial.begin(115200);
+
+  pinMode(CLK,INPUT);
+  pinMode(DT,INPUT);
+  pinMode(SW, INPUT_PULLUP);
+  
+  // Read the initial state of CLK
+  lastStateCLK = digitalRead(CLK);
+  
+  pixels.begin(); // initialize NeoPixel library.
+  pixels.fill(pixels.gamma32(pixels.ColorHSV(hue, saturation, value)), 0, NUMPIXELS);
+  pixels.show();
+
+  Serial.println("PIXELS");
+}
+
+void loop() {
+  currentStateCLK = digitalRead(CLK);
+  int btnState = digitalRead(SW);
+
+  // If last and current state of CLK are different, then pulse occurred
+  if (currentStateCLK != lastStateCLK  && currentStateCLK == 1){
+
+    if (digitalRead(DT) != currentStateCLK) {
+      currentDir ="CW";
+      if (btnState == LOW) {
+        hue += HUE_STEP;
+        if (hue > 65535) {
+          hue = 65535;
+          saturation = 0;
+        }
+        else {
+          saturation = 255;
+        }
+      }
+      else {
+        value += VAL_STEP;
+        if (value > 255) {
+          value = 255;
+        }
+      }
+    } else {
+      currentDir ="CCW";
+      if (btnState == LOW) {
+        hue -= HUE_STEP;
+        if (hue < 0) {
+          hue = 0;
+          saturation = 0;
+        }
+        else {
+          saturation = 255;
+        }
+      }
+      else {
+        value -= VAL_STEP;
+        if (value < 30) {
+          value = 0;
+        }
+      }
+    }
+
+
+    Serial.print("Direction: ");
+    Serial.print(currentDir);
+    Serial.print(" | Hue: ");
+    Serial.print(hue);
+    Serial.print(" | Sat: ");
+    Serial.print(saturation);
+    Serial.print(" | Val: ");
+    Serial.println(value);
+
+    
+    pixels.fill(pixels.gamma32(pixels.ColorHSV(hue, saturation, value)), 0, NUMPIXELS);
+    pixels.show();
+  }
+/*  else if (btnState == LOW) {
+    //if 50ms have passed since last LOW pulse, it means that the
+    //button has been pressed, released and pressed again
+    if (millis() - lastButtonPress > 50) {
+      Serial.println("Button pressed!");
+    }
+    lastButtonPress = millis();
+  }*/
+
+  lastStateCLK = currentStateCLK;
+
+  // Put in a slight delay to help debounce the reading
+  delay(1);
+}