demo for p5201

Author: ladyada

ANO_encoder_demo/ANO_encoder_demo.ino

@@ -0,0 +1,84 @@
+#include <Adafruit_NeoPixel.h>
+#include <RotaryEncoder.h>
+
+#define PIN_ENCODER_A 12
+#define PIN_ENCODER_B 13
+#define COM_A    11            // for wiring simplicity we set these output LOW
+#define COM_B    SDA           // ... but you can just wire these to GND instead!
+#define BUTTON_UP SCL
+#define BUTTON_LEFT 5
+#define BUTTON_DOWN 6
+#define BUTTON_RIGHT 9
+#define BUTTON_IN 10
+
+RotaryEncoder encoder(PIN_ENCODER_A, PIN_ENCODER_B, RotaryEncoder::LatchMode::TWO03);
+// This interrupt will do our encoder reading/checking!
+void checkPosition() {
+  encoder.tick(); // just call tick() to check the state.
+}
+int last_rotary = 0;
+
+
+#define NUMPIXELS 12
+Adafruit_NeoPixel pixels(NUMPIXELS, A0, NEO_GRB + NEO_KHZ800);
+
+
+void setup(void) {
+  Serial.begin(115200);
+// while (!Serial);
+  Serial.println("ANO encoder + NeoPixel test");
+
+  pinMode(COM_A, OUTPUT);
+  digitalWrite(COM_A, LOW);
+  pinMode(COM_B, OUTPUT);
+  digitalWrite(COM_B, LOW);
+
+  attachInterrupt(PIN_ENCODER_A, checkPosition, CHANGE);
+  attachInterrupt(PIN_ENCODER_B, checkPosition, CHANGE);
+
+  pinMode(BUTTON_UP, INPUT_PULLUP);
+  pinMode(BUTTON_DOWN, INPUT_PULLUP);
+  pinMode(BUTTON_LEFT, INPUT_PULLUP);
+  pinMode(BUTTON_RIGHT, INPUT_PULLUP);
+  pinMode(BUTTON_IN, INPUT_PULLUP);
+  pixels.begin();
+  pixels.setBrightness(30);
+  pixels.show();
+}
+
+
+void loop(void) {
+  // read encoder
+  int curr_rotary = encoder.getPosition();
+  RotaryEncoder::Direction direction = encoder.getDirection();
+  
+  pixels.clear();
+  if (curr_rotary != last_rotary) {
+    Serial.print("Encoder value: ");
+    Serial.print(curr_rotary);
+    Serial.print(" direction: ");
+    Serial.println((int)direction);
+  }
+  last_rotary = curr_rotary;
+
+  pixels.setPixelColor((curr_rotary + (1000*NUMPIXELS)) % NUMPIXELS, pixels.Color(0, 150, 0));
+
+  if (! digitalRead(BUTTON_UP)) {
+    pixels.setPixelColor(0, pixels.Color(150, 0, 0));
+  }
+  if (! digitalRead(BUTTON_LEFT)) {
+    pixels.setPixelColor(NUMPIXELS/4, pixels.Color(150, 0, 0));
+  }
+  if (! digitalRead(BUTTON_DOWN)) {
+    pixels.setPixelColor(NUMPIXELS/2, pixels.Color(150, 0, 0));
+  }
+  if (! digitalRead(BUTTON_RIGHT)) {
+    pixels.setPixelColor(NUMPIXELS*3/4, pixels.Color(150, 0, 0));
+  }
+  if (! digitalRead(BUTTON_IN)) {
+    pixels.fill(pixels.Color(50, 50, 50));
+  }
+  pixels.show();
+
+  delay(20);
+}