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RGBWNode.cpp
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RGBWNode.cpp
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/*
* RGBWNode.cpp
*
* Created on: 16.05.2016
* Author: ian
*/
#include "RGBWNode.h"
#include "Homie.hpp"
#include "LoggerNode.h"
#include "Arduino.h"
// Gamma correction, for details see https://learn.adafruit.com/led-tricks-gamma-correction/
// This table maps [0%-100%] to [0-1024] (PWMRANGE of ESP8266's arduino.h)
// See tools directory for C++ program to create table for different ranges
const uint16_t /*PROGMEM*/ RGBWNode::gamma8[] = {
0,0,0,0,0,0,0,1,1,1,2,2,3,3,4,5,
6,7,8,10,11,13,15,17,19,21,24,26,29,32,35,39,
42,46,50,54,59,63,68,73,79,84,90,96,103,109,116,124,
131,139,147,155,164,173,182,192,202,212,223,234,245,257,269,281,
293,307,320,334,348,362,377,392,408,424,441,458,475,493,511,529,
548,568,587,608,628,650,671,693,716,739,762,786,811,836,861,887,
913,940,968,996,1024 };
HomieSetting<long> RGBWNode::fadeDelay ("RGBfadeDelay", "fade delay"); // id, description
bool RGBWNode::settingsInitialized(false);
RGBWNode::RGBWNode(const char* name, char redpin, char greenpin, char bluepin, char whitepin) :
HomieNode(name, "RGBW-LED PWM Output", "RGBW"),
rgbw_pins{redpin, greenpin, bluepin, whitepin},
initialized(false),
fade_active(true)
{
// fadeDelay is static, so we need to take care to initialize it only once
if (!settingsInitialized) {
settingsInitialized = true;
fadeDelay.setDefaultValue(5).setValidator([] (long candidate) {
return (candidate > 0 && candidate < 200);
});
}
if (redpin != NOPIN) advertise("r").settable().setDatatype("integer").setFormat("0:100");
if (bluepin != NOPIN) advertise("g").settable().setDatatype("integer").setFormat("0:100");
if (greenpin != NOPIN) advertise("b").settable().setDatatype("integer").setFormat("0:100");
if (whitepin != NOPIN) advertise("w").settable().setDatatype("color").setFormat("0:100");
if (redpin != NOPIN && bluepin != NOPIN && greenpin != NOPIN) advertise("rgb").settable().setDatatype("color").setFormat("rgb");
}
bool RGBWNode::handleInput(const HomieRange& range, const String& property, const String& value) {
LN.logf(__PRETTY_FUNCTION__, LoggerNode::DEBUG, "Received property %s (value=%s).", property.c_str(), value.c_str());
if (property.equals("rgb")) {
uint_fast8_t r_end = value.indexOf(',');
uint_fast8_t g_end = value.lastIndexOf(',');
int new_r = value.substring(0, r_end).toInt() * 100 / 255;
int new_g = value.substring(r_end+1, g_end).toInt() * 100 / 255;
int new_b = value.substring(g_end+1).toInt() * 100 / 255;
//LN.logf(__PRETTY_FUNCTION__, LoggerNode::DEBUG, "Substrings:\n\tr: %s\n\tg: %s\n\tb: %s\n", value.substring(0, r_end).c_str(), value.substring(r_end+1, g_end).c_str(), value.substring(g_end+1).c_str());
if (new_r >= 0 && new_r <= 100) rgbw_values[R] = new_r;
if (new_g >= 0 && new_g <= 100) rgbw_values[G] = new_g;
if (new_b >= 0 && new_b <= 100) rgbw_values[B] = new_b;
updateLEDs();
} else {
int value_int = value.toInt();
uint_fast8_t id = R;
for (id=R; id <= W; id++)
if (property[0] == rgbw_id[id]) break;
if ((id > W) || (value_int < 0) || (value_int > 100)) {
LN.logf(__PRETTY_FUNCTION__, LoggerNode::ERROR,
"Received value %d or property %s out of range", value_int, property.c_str());
return false;
}
rgbw_values[id] = value_int;
updateLED(id);
PublishState(id);
}
fade_active = true;
return true;
}
void RGBWNode::switchLed(const String &property, uint8_t value) {
uint_fast8_t id = R;
for (id=R; id <= W; id++)
if (property[0] == rgbw_id[id]) break;
if ((id > W) || (value > 100)) {
LN.logf(__PRETTY_FUNCTION__, LoggerNode::ERROR,
"Internal property %s out of range", property.c_str());
return;
}
rgbw_values[id] = value;
updateLED(id);
PublishState(id);
fade_active = true;
}
void RGBWNode::loop() {
static unsigned long last = 0;
if (fade_active && ((last + fadeDelay.get()) < millis()) ) {
last = millis();
fadeLEDs();
}
}
void RGBWNode::fadeLEDs() {
bool changed = false;
for (uint_fast8_t id = R;id <= W; id++) {
if (rgbw_values[id] != rgbw_cur_values[id]) {
changed = true;
if (rgbw_values[id] > rgbw_cur_values[id]) {
rgbw_cur_values[id]++;
} else {
rgbw_cur_values[id]--;
}
updateLED(id);
}
}
fade_active = changed;
}
void RGBWNode::updateLEDs() const {
for (uint_fast8_t i=0;i<4;i++) {
updateLED(i);
PublishState(i);
}
}
void RGBWNode::updateLED(uint8_t id) const {
if (id < R || id > W) return;
uint16_t value = rgbw_cur_values[id];
if (value > 100) {
LN.logf(__PRETTY_FUNCTION__, LoggerNode::ERROR, "Invalid color value %d for id %d", value, id);
return;
}
uint16_t value_gamma = gamma8[value];
uint8_t pin=rgbw_pins[id];
if (pin == NOPIN) {
//LN.logf(__PRETTY_FUNCTION__, LoggerNode::ERROR, "Tried to set invalid pin");
return; // PIN "255" reserved for UNUSED
}
analogWrite(pin, value_gamma);
if (rgbw_values[id] == value && LN.loglevel(LoggerNode::INFO)) {
LN.logf(__PRETTY_FUNCTION__, LoggerNode::INFO, "Updated LED %c on Pin %d, value %d%% (gamma-corrected %d).", rgbw_id[id], pin, value, value_gamma);
}
}
void RGBWNode::PublishState(uint8_t id) const {
if (id < R || id > W) return;
if (rgbw_pins[id] == NOPIN) return;
const String id_string(rgbw_id[id]);
const String value_string((uint16_t) round((float)rgbw_values[id]));
setProperty(id_string).send(value_string);
if (id != W) {
String rgb_string;
rgb_string.concat(rgbw_values[R] * 255 / 100);
rgb_string.concat(',');
rgb_string.concat(rgbw_values[G] * 255 / 100);
rgb_string.concat(',');
rgb_string.concat(rgbw_values[B] * 255 / 100);
setProperty("rgb").send(rgb_string);
}
}
void RGBWNode::setup() {
for (uint_fast8_t i=0;i<4;i++)
{
pinMode(rgbw_pins[i], OUTPUT);
}
}
void RGBWNode::onReadyToOperate() {
initialized = true;
LN.log("RGBWNode", LoggerNode::DEBUG, __PRETTY_FUNCTION__);
LN.logf("RGBWNode/Settings", LoggerNode::INFO, "RGBfadedelay: %d", fadeDelay.get());
delay(200);
updateLEDs();
}
//void RGBWNode::drawFrame(OLEDDisplay& display, OLEDDisplayUiState& state, int16_t x, int16_t y) {
// display.setFont(ArialMT_Plain_10);
// bool blink = (millis() >> 8) % 2;
//
// for (uint_fast8_t i=0;i<=W;i++) {
// if (blink || i != 0) {
// String color(rgbw_id[i]);
// color.concat(':');
// display.drawString(0 + x, 16 + y + (i * 12), color);
// }
// display.drawProgressBar(25+x,16+y+(i*12),100,10,rgbw_values[i] / 10);
// }
//}
//
//void RGBWNode::drawOverlay(OLEDDisplay& display, OLEDDisplayUiState& state, uint8_t idx) {
// display.setFont(ArialMT_Plain_16);
// display.drawString(25,0,"RGBW Ctrl");
//}