Knob: add setter with example

Author: facchinm

examples/EncoderSetter/EncoderSetter.ino

@@ -0,0 +1,18 @@
+#include "Modulino.h"
+
+ModulinoKnob encoder;
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(115200);
+  Modulino.begin();
+  encoder.begin();
+}
+
+void loop() {
+  int value = encoder.get();
+  if (value > 7 || value < 0) {
+    encoder.set(0);
+  }
+  Serial.println(value);
+}

src/Modulino.h

@@ -230,6 +230,11 @@ class ModulinoKnob : public Module {
     int16_t ret = buf[0] | (buf[1] << 8);
     return ret;
   }
+  void set(int16_t value) {
+    uint8_t buf[4];
+    memcpy(buf, &value, 2);
+    write(buf, 4);
+  }
   bool pressed() {
     get();
     return _pressed;