Add getDirection() support to ModulinoKnob and example ⚡

Author: AntonioBerna

examples/Modulino_Knob/Knob_Basic/Knob_Basic.ino

@@ -24,12 +24,21 @@ void loop(){
   int position = knob.get();
   // Check if the knob has been pressed (clicked)
   bool click = knob.isPressed();
+  // Get the rotation direction
+  int8_t direction = knob.getDirection();
 
   Serial.print("Current position is: ");
   Serial.println(position);
 
-  if(click){
+  if (click) {
     Serial.println("Clicked!");
   }
 
-}
+  if (direction == 1) {
+    Serial.println("Rotated clockwise");
+  } else if (direction == -1) {
+    Serial.println("Rotated counter-clockwise");
+  }
+
+  delay(10); // optional small delay to reduce serial spam
+} 

src/Modulino.h

@@ -274,12 +274,27 @@ class ModulinoKnob : public Module {
     }
     return ret;
   }
-  int16_t get() {
+  bool update() {
     uint8_t buf[3];
     auto res = read(buf, 3);
     if (res == false) {
       return 0;
     }
+    get(buf);
+    return 1;
+  }
+  int16_t get(uint8_t * buf = nullptr) {
+    if (buf == nullptr) {
+      buf = (uint8_t*)malloc(3);
+      if (buf == nullptr) {
+        return 0;
+      }
+      auto res = read(buf, 3);
+      if (res == false) {
+        _pressed = false;
+        return 0;
+      }
+    }
     _pressed = (buf[2] != 0);
     int16_t ret = buf[0] | (buf[1] << 8);
     return ret;