Code for rotary encoder guide.

.pylintrc

@@ -52,7 +52,7 @@ confidence=
 # no Warning level messages displayed, use"--disable=all --enable=classes
 # --disable=W"
 # disable=import-error,print-statement,parameter-unpacking,unpacking-in-except,old-raise-syntax,backtick,long-suffix,old-ne-operator,old-octal-literal,import-star-module-level,raw-checker-failed,bad-inline-option,locally-disabled,locally-enabled,file-ignored,suppressed-message,useless-suppression,deprecated-pragma,apply-builtin,basestring-builtin,buffer-builtin,cmp-builtin,coerce-builtin,execfile-builtin,file-builtin,long-builtin,raw_input-builtin,reduce-builtin,standarderror-builtin,unicode-builtin,xrange-builtin,coerce-method,delslice-method,getslice-method,setslice-method,no-absolute-import,old-division,dict-iter-method,dict-view-method,next-method-called,metaclass-assignment,indexing-exception,raising-string,reload-builtin,oct-method,hex-method,nonzero-method,cmp-method,input-builtin,round-builtin,intern-builtin,unichr-builtin,map-builtin-not-iterating,zip-builtin-not-iterating,range-builtin-not-iterating,filter-builtin-not-iterating,using-cmp-argument,eq-without-hash,div-method,idiv-method,rdiv-method,exception-message-attribute,invalid-str-codec,sys-max-int,bad-python3-import,deprecated-string-function,deprecated-str-translate-call
-disable=too-many-instance-attributes,len-as-condition,too-few-public-methods,anomalous-backslash-in-string,no-else-return,simplifiable-if-statement,too-many-arguments,duplicate-code,no-name-in-module,no-member,print-statement,parameter-unpacking,unpacking-in-except,old-raise-syntax,backtick,long-suffix,old-ne-operator,old-octal-literal,import-star-module-level,raw-checker-failed,bad-inline-option,locally-disabled,locally-enabled,file-ignored,suppressed-message,useless-suppression,deprecated-pragma,apply-builtin,basestring-builtin,buffer-builtin,cmp-builtin,coerce-builtin,execfile-builtin,file-builtin,long-builtin,raw_input-builtin,reduce-builtin,standarderror-builtin,unicode-builtin,xrange-builtin,coerce-method,delslice-method,getslice-method,setslice-method,no-absolute-import,old-division,dict-iter-method,dict-view-method,next-method-called,metaclass-assignment,indexing-exception,raising-string,reload-builtin,oct-method,hex-method,nonzero-method,cmp-method,input-builtin,round-builtin,intern-builtin,unichr-builtin,map-builtin-not-iterating,zip-builtin-not-iterating,range-builtin-not-iterating,filter-builtin-not-iterating,using-cmp-argument,eq-without-hash,div-method,idiv-method,rdiv-method,exception-message-attribute,invalid-str-codec,sys-max-int,bad-python3-import,deprecated-string-function,deprecated-str-translate-call,import-error,missing-docstring,invalid-name,bad-whitespace,consider-using-enumerate,unexpected-keyword-arg
+disable=too-many-instance-attributes,len-as-condition,too-few-public-methods,anomalous-backslash-in-string,no-else-return,simplifiable-if-statement,too-many-arguments,duplicate-code,no-name-in-module,no-member,print-statement,parameter-unpacking,unpacking-in-except,old-raise-syntax,backtick,long-suffix,old-ne-operator,old-octal-literal,import-star-module-level,raw-checker-failed,bad-inline-option,locally-disabled,locally-enabled,file-ignored,suppressed-message,useless-suppression,deprecated-pragma,apply-builtin,basestring-builtin,buffer-builtin,cmp-builtin,coerce-builtin,execfile-builtin,file-builtin,long-builtin,raw_input-builtin,reduce-builtin,standarderror-builtin,unicode-builtin,xrange-builtin,coerce-method,delslice-method,getslice-method,setslice-method,no-absolute-import,old-division,dict-iter-method,dict-view-method,next-method-called,metaclass-assignment,indexing-exception,raising-string,reload-builtin,oct-method,hex-method,nonzero-method,cmp-method,input-builtin,round-builtin,intern-builtin,unichr-builtin,map-builtin-not-iterating,zip-builtin-not-iterating,range-builtin-not-iterating,filter-builtin-not-iterating,using-cmp-argument,eq-without-hash,div-method,idiv-method,rdiv-method,exception-message-attribute,invalid-str-codec,sys-max-int,bad-python3-import,deprecated-string-function,deprecated-str-translate-call,import-error,missing-docstring,invalid-name,bad-whitespace,consider-using-enumerate,unexpected-keyword-arg,consider-using-f-string
 
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 # either give multiple identifier separated by comma (,) or put this option

ANO_Rotary_Encoder/ANO_Rotary_Encoder_NeoPixel_Arduino_Example/ANO_Rotary_Encoder_NeoPixel_Arduino_Example.ino

@@ -0,0 +1,88 @@
+// SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
+#include <Adafruit_NeoPixel.h>
+#include <RotaryEncoder.h>
+
+#define PIN_ENCODER_A 13
+#define PIN_ENCODER_B 12
+#define COM_A    11
+#define COM_B    SDA
+#define BUTTON_UP 5
+#define BUTTON_LEFT SCL
+#define BUTTON_DOWN 9
+#define BUTTON_RIGHT 6
+#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 Rotary Encoder Demo");
+
+  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);
+}

ANO_Rotary_Encoder/ANO_Rotary_Encoder_NeoPixel_CircuitPython_Example/code.py

@@ -0,0 +1,78 @@
+# SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+"""
+CircuitPython ANO Rotary Encoder and NeoPixel Ring example.
+"""
+import board
+import digitalio
+import rotaryio
+import neopixel
+
+# The pin assignments for the breakout pins. Update this is you are not using a Feather.
+ENCA = board.D13
+ENCB = board.D12
+COMA = board.D11
+SW1 = board.D10
+SW2 = board.D9
+SW3 = board.D6
+SW4 = board.D5
+SW5 = board.SCL
+COMB = board.SDA
+
+# Rotary encoder setup
+encoder = rotaryio.IncrementalEncoder(ENCA, ENCB)
+last_position = None
+
+# NeoPixel ring setup. Update num_pixels if using a different ring.
+num_pixels = 12
+pixels = neopixel.NeoPixel(board.A0, num_pixels, auto_write=False)
+
+# Set the COMA and COMB pins LOW. This is only necessary when using the direct-to-Feather or other
+# GPIO-based wiring method. If connecting COMA and COMB to ground, you do not need to include this.
+com_a = digitalio.DigitalInOut(COMA)
+com_a.switch_to_output()
+com_a = False
+com_b = digitalio.DigitalInOut(COMB)
+com_b.switch_to_output()
+com_b = False
+
+# Button pin setup
+button_pins = (SW1, SW2, SW3, SW4, SW5)
+buttons = []
+for button_pin in button_pins:
+    pin = digitalio.DigitalInOut(button_pin)
+    pin.switch_to_input(digitalio.Pull.UP)
+    buttons.append(pin)
+
+while True:
+    position = encoder.position
+    if last_position is None or position != last_position:
+        print("Position: {}".format(position))
+        last_position = position
+
+    pixels.fill((0, 0, 0))
+    pixels[position % num_pixels] = (0, 150, 0)
+
+    if not buttons[0].value:
+        print("Center button!")
+        pixels.fill((100, 100, 100))
+
+    if not buttons[1].value:
+        print("Up button!")
+        pixels[0] = (150, 0 ,0)
+
+    if not buttons[2].value:
+        print("Left button!")
+        pixels[3] = (150, 0, 0)
+
+    if not buttons[3].value:
+        print("Down button!")
+        pixels[6] = (150, 0, 0)
+
+    if not buttons[4].value:
+        print("Right button!")
+        pixels[9] = (150, 0, 0)
+
+    pixels.show()