/** * The MySensors Arduino library handles the wireless radio link and protocol * between your home built sensors/actuators and HA controller of choice. * The sensors forms a self healing radio network with optional repeaters. Each * repeater and gateway builds a routing tables in EEPROM which keeps track of the * network topology allowing messages to be routed to nodes. * * Created by Henrik Ekblad * Copyright (C) 2013-2015 Sensnology AB * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors * * Documentation: http://www.mysensors.org * Support Forum: http://forum.mysensors.org * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * ******************************* * * REVISION HISTORY * Version 1.0 - Developed by Bruce Lacey and GizMoCuz (Domoticz) * Version 1.1 - Modified by hek to incorporate a rotary encode to adjust * light level locally at node * * DESCRIPTION * This sketch provides an example how to implement a dimmable led light node with a rotary * encoder connected for adjusting light level. * The encoder has a click button which turns on/off the light (and remembers last dim-level) * The sketch fades the light (non-blocking) to the desired level. * * Default MOSFET pin is 3 * * Arduino Encoder module * --------------------------- * 5V 5V (+) * GND GND (-) * 4 CLK (or putput 1) * 5 DT (or output 1) * 6 SW (Switch/Click) */ // Enable debug prints #define MY_DEBUG // Enable and select radio type attached #define MY_RADIO_NRF24 //#define MY_RADIO_RFM69 #include #include #include #include #define LED_PIN 3 // Arduino pin attached to MOSFET Gate pin #define KNOB_ENC_PIN_1 4 // Rotary encoder input pin 1 #define KNOB_ENC_PIN_2 5 // Rotary encoder input pin 2 #define KNOB_BUTTON_PIN 6 // Rotary encoder button pin #define FADE_DELAY 10 // Delay in ms for each percentage fade up/down (10ms = 1s full-range dim) #define SEND_THROTTLE_DELAY 400 // Number of milliseconds before sending after user stops turning knob #define SN "DimmableLED /w button" #define SV "1.2" #define CHILD_ID_LIGHT 1 #define EEPROM_DIM_LEVEL_LAST 1 #define EEPROM_DIM_LEVEL_SAVE 2 #define LIGHT_OFF 0 #define LIGHT_ON 1 int dimValue; int fadeTo; int fadeDelta; byte oldButtonVal; bool changedByKnob=false; bool sendDimValue=false; unsigned long lastFadeStep; unsigned long sendDimTimeout; char convBuffer[10]; MyMessage dimmerMsg(CHILD_ID_LIGHT, V_DIMMER); Encoder knob(KNOB_ENC_PIN_1, KNOB_ENC_PIN_2); Bounce debouncer = Bounce(); void setup() { // Set knob button pin as input (with debounce) pinMode(KNOB_BUTTON_PIN, INPUT); digitalWrite(KNOB_BUTTON_PIN, HIGH); debouncer.attach(KNOB_BUTTON_PIN); debouncer.interval(5); oldButtonVal = debouncer.read(); // Set analog led pin to off analogWrite( LED_PIN, 0); // Retreive our last dim levels from the eprom fadeTo = dimValue = 0; byte oldLevel = loadLevelState(EEPROM_DIM_LEVEL_LAST); Serial.print("Sending in last known light level to controller: "); Serial.println(oldLevel); send(dimmerMsg.set(oldLevel), true); Serial.println("Ready to receive messages..."); } void presentation() { // Send the Sketch Version Information to the Gateway present(CHILD_ID_LIGHT, S_DIMMER); sendSketchInfo(SN, SV); } void loop() { // Check if someone turned the rotary encode checkRotaryEncoder(); // Check if someone has pressed the knob button checkButtonClick(); // Fade light to new dim value fadeStep(); } void receive(const MyMessage &message) { if (message.type == V_LIGHT) { // Incoming on/off command sent from controller ("1" or "0") int lightState = message.getString()[0] == '1'; int newLevel = 0; if (lightState==LIGHT_ON) { // Pick up last saved dimmer level from the eeprom newLevel = loadLevelState(EEPROM_DIM_LEVEL_SAVE); } // Send dimmer level back to controller with ack enabled send(dimmerMsg.set(newLevel), true); // We do not change any levels here until ack comes back from gateway return; } else if (message.type == V_DIMMER) { // Incoming dim-level command sent from controller (or ack message) fadeTo = atoi(message.getString(convBuffer)); // Save received dim value to eeprom (unless turned off). Will be // retreived when a on command comes in if (fadeTo != 0) saveLevelState(EEPROM_DIM_LEVEL_SAVE, fadeTo); } saveLevelState(EEPROM_DIM_LEVEL_LAST, fadeTo); Serial.print("New light level received: "); Serial.println(fadeTo); if (!changedByKnob) knob.write(fadeTo); // Cancel send if user turns knob while message comes in changedByKnob = false; sendDimValue = false; // Stard fading to new light level startFade(); } void checkRotaryEncoder() { long encoderValue = knob.read(); if (encoderValue > 100) { encoderValue = 100; knob.write(100); } else if (encoderValue < 0) { encoderValue = 0; knob.write(0); } if (encoderValue != fadeTo) { fadeTo = encoderValue; changedByKnob = true; startFade(); } } void checkButtonClick() { debouncer.update(); byte buttonVal = debouncer.read(); byte newLevel = 0; if (buttonVal != oldButtonVal && buttonVal == LOW) { if (dimValue==0) { // Turn on light. Set the level to last saved dim value int saved = loadLevelState(EEPROM_DIM_LEVEL_SAVE); newLevel = saved > 0 ? saved : 100; } send(dimmerMsg.set(newLevel),true); } oldButtonVal = buttonVal; } void startFade() { fadeDelta = ( fadeTo - dimValue ) < 0 ? -1 : 1; lastFadeStep = millis(); } // This method provides a graceful none-blocking fade up/down effect void fadeStep() { unsigned long currentTime = millis(); if ( dimValue != fadeTo && currentTime > lastFadeStep + FADE_DELAY) { dimValue += fadeDelta; analogWrite( LED_PIN, (int)(dimValue / 100. * 255) ); lastFadeStep = currentTime; Serial.print("Fading level: "); Serial.println(dimValue); if (fadeTo == dimValue && changedByKnob) { sendDimValue = true; sendDimTimeout = currentTime; } } // Wait a few millisecs before sending in new value (if user still turns the knob) if (sendDimValue && currentTime > sendDimTimeout + SEND_THROTTLE_DELAY) { // We're done fading.. send in new dim-value to controller. // Send in new dim value with ack (will be picked up in incomingMessage) send(dimmerMsg.set(dimValue), true); // Send new dimmer value and request ack back sendDimValue = false; } } // Make sure only to store/fetch values in the range 0-100 from eeprom int loadLevelState(byte pos) { return min(max(loadState(pos),0),100); } void saveLevelState(byte pos, byte data) { saveState(pos,min(max(data,0),100)); }