From f90ab467946b0085615e043dbf089b95399e802f Mon Sep 17 00:00:00 2001
From: cschwinne <dev.aircoookie@gmail.com>
Date: Wed, 15 Apr 2020 01:21:07 +0200
Subject: [PATCH] Add rotary encoder brightness usermod

---
 .../usermod.cpp                               | 62 +++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 usermods/rotary_encoder_change_brightness/usermod.cpp

diff --git a/usermods/rotary_encoder_change_brightness/usermod.cpp b/usermods/rotary_encoder_change_brightness/usermod.cpp
new file mode 100644
index 00000000..8fae6120
--- /dev/null
+++ b/usermods/rotary_encoder_change_brightness/usermod.cpp
@@ -0,0 +1,62 @@
+#include "wled.h"
+/*
+ * This file allows you to add own functionality to WLED more easily
+ * See: https://github.com/Aircoookie/WLED/wiki/Add-own-functionality
+ * EEPROM bytes 2750+ are reserved for your custom use case. (if you extend #define EEPSIZE in const.h)
+ * bytes 2400+ are currently ununsed, but might be used for future wled features
+ */
+
+//Use userVar0 and userVar1 (API calls &U0=,&U1=, uint16_t)
+
+/*
+** Rotary Encoder Example
+** Use the Sparkfun Rotary Encoder to vary brightness of LED
+**
+** Sample the encoder at 500Hz using the millis() function
+*/
+
+int fadeAmount = 5;  // how many points to fade the Neopixel with each step
+unsigned long currentTime;
+unsigned long loopTime;
+const int pinA = D6;  // DT from encoder
+const int pinB = D7;  // CLK from encoder
+
+unsigned char Enc_A;
+unsigned char Enc_B;
+unsigned char Enc_A_prev = 0;
+
+//gets called once at boot. Do all initialization that doesn't depend on network here
+void userSetup() {
+  pinMode(pinA, INPUT_PULLUP);
+  pinMode(pinB, INPUT_PULLUP);
+  currentTime = millis();
+  loopTime = currentTime;
+}
+
+//gets called every time WiFi is (re-)connected. Initialize own network interfaces here
+void userConnected() {
+}
+
+//loop. You can use "if (WLED_CONNECTED)" to check for successful connection
+void userLoop() {
+  currentTime = millis();  // get the current elapsed time
+  if(currentTime >= (loopTime + 2))  // 2ms since last check of encoder = 500Hz 
+  {
+    int Enc_A = digitalRead(pinA);  // Read encoder pins
+    int Enc_B = digitalRead(pinB);   
+    if((! Enc_A) && (Enc_A_prev)) { // A has gone from high to low
+      if(Enc_B == HIGH) { // B is high so clockwise
+        if(bri + fadeAmount <= 255) bri += fadeAmount;   // increase the brightness, dont go over 255
+      
+      } else if (Enc_B == LOW) { // B is low so counter-clockwise
+        if(bri - fadeAmount >= 0) bri -= fadeAmount;   // decrease the brightness, dont go below 0          
+      }   
+    }   
+      Enc_A_prev = Enc_A;     // Store value of A for next time    
+      loopTime = currentTime;  // Updates loopTime
+    
+    //call for notifier -> 0: init 1: direct change 2: button 3: notification 4: nightlight 5: other (No notification)
+    // 6: fx changed 7: hue 8: preset cycle 9: blynk 10: alexa
+    colorUpdated(6);
+  }
+}