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leds.cpp
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leds.cpp
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#include <Arduino.h>
#include <string.h>
#include "leds.h"
///////////////////////////////////////////////////////////////////////////
// LED
///////////////////////////////////////////////////////////////////////////
LED::LED() : _state(false) {}
boolean LED::getState() {
return _state;
}
boolean LED::isRgb() {
return false;
};
boolean LED::setColor(int red, int green, int blue) {
return false;
};
///////////////////////////////////////////////////////////////////////////
// MonochromeLED
///////////////////////////////////////////////////////////////////////////
MonochromeLED::MonochromeLED(int gpioPin) :
_pin(gpioPin) {
}
void MonochromeLED::setup() {
pinMode(_pin, OUTPUT);
setState(false);
}
void MonochromeLED::setState(boolean state) {
_state = state;
int value = state ? HIGH : LOW;
digitalWrite(_pin, value);
}
String MonochromeLED::getLedInfo(int index) {
String rv("{\"d\":");
rv += String(index);
rv += ",\"isRgb\":false,\"s\":\"";
rv += (_state) ? "on" : "off";
rv += "\"}";
return rv;
}
///////////////////////////////////////////////////////////////////////////
// RgbLED
///////////////////////////////////////////////////////////////////////////
RgbLED::RgbLED(int gpioRPin, int gpioGPin, int gpioBPin) :
_rPin(gpioRPin), _gPin(gpioGPin), _bPin(gpioBPin),
_red(0xff), _green(0xff), _blue(0xff) {
}
void RgbLED::setup() {
pinMode(_rPin, OUTPUT);
pinMode(_gPin, OUTPUT);
pinMode(_bPin, OUTPUT);
setState(false);
}
void RgbLED::setState(boolean state) {
int red = _red, green = _green, blue = _blue;
_state = state;
if (state) {
if (_red == 0 && _green == 0 && _blue == 0) {
// pick a random color
red = random(0, 0xff);
green = random(0, 0xff);
blue = random(0, 0xff);
}
}
else {
red = green = blue = 0;
}
analogWrite(_rPin, red);
analogWrite(_gPin, green);
analogWrite(_bPin, blue);
}
boolean RgbLED::isRgb() { return true; }
boolean RgbLED::setColor(int red, int green, int blue) {
if (red < 0 || red > 0xff ||
green < 0 || green > 0xff ||
blue < 0 || blue > 0xff) {
return false;
}
_red = red;
_green = green;
_blue = blue;
if (_state) {
setState(_state);
}
return true;
}
String RgbLED::getLedInfo(int index) {
String rv("{\"d\":");
rv += String(index);
rv += ",\"isRgb\":true,\"s\":\"";
rv += (_state) ? "on" : "off";
rv += "\",\"r\":";
rv += String(_red);
rv += ",\"g\":";
rv += String(_green);
rv += ",\"b\":";
rv += String(_blue);
rv += "}";
return rv;
}
///////////////////////////////////////////////////////////////////////////
// LEDGroup
///////////////////////////////////////////////////////////////////////////
LEDGroup::LEDGroup(LED** leds, int numLeds, Ticker::callback_t modeStepper) :
_leds(leds), _numLeds(numLeds), _mode(NONE), _modeStepper(modeStepper) {
}
void LEDGroup::setup() {
for (int i = 0; i < _numLeds; i++) {
_leds[i]->setup();
}
}
String LEDGroup::getGroupInfo() {
String rv("{\"count\":");
rv += String(size());
rv += ",\"m\":\"";
rv += getModeString(_mode);
rv += "\"}";
return rv;
}
String LEDGroup::getGroupEnumeration() {
String rv("[");
for (int i = 0; i < _numLeds; i++) {
if (i != 0) {
rv += ",";
}
rv += _leds[i]->getLedInfo(i);
}
rv += "]";
return rv;
}
String LEDGroup::getLedInfo(int id) {
return _leds[id]->getLedInfo(id);
}
boolean LEDGroup::setMode(const String& mode) {
modes newMode = getModeFromString(mode);
if (newMode != NUM_MODES) {
_mode = newMode;
switch (_mode) {
case NONE:
// Stop the ticker and turn off all LEDs
_modeTicker.detach();
setAllState(false);
break;
case ALL:
// Stop the ticker and turn on all LEDs
_modeTicker.detach();
setAllState(true);
case BLINK:
_modeFlashState = false;
_modeTicker.attach_ms(500, _modeStepper);
break;
case CHASE:
_modeCurrentState = 5; // LED 1 and 3
_modeTicker.attach_ms(250, _modeStepper);
break;
case TWINKLE:
_modeTwinkleCounter = 0;
_modeCurrentState = 0;
_modeNextState = random(0, _numLeds);
_leds[_modeCurrentState]->setState(true);
_modeTicker.attach_ms(100, _modeStepper);
break;
}
return true;
}
return false;
}
void LEDGroup::modeStep() {
switch (_mode) {
case BLINK:
_modeFlashState = !_modeFlashState;
setAllState(_modeFlashState);
break;
case CHASE:
_modeCurrentState = _modeCurrentState << 1;
_modeCurrentState |= (_modeCurrentState & (1 << _numLeds)) >> _numLeds;
for (int i = 0; i < _numLeds; i++) {
_leds[i]->setState((_modeCurrentState & (1 << i)) != 0);
}
break;
case TWINKLE:
// |0 1 2|0 1 2|0 1 2|0 1 2|0
// |X X X X X X X X X
// |X X X X X X X X X
_modeTwinkleCounter++;
switch (_modeTwinkleCounter % 3) {
case 0:
while ((_modeNextState = random(0, _numLeds)) == _modeCurrentState);
_leds[_modeNextState]->setState(true);
break;
case 1:
_leds[_modeCurrentState]->setState(false);
_modeCurrentState = _modeNextState;
break;
}
}
}
void LEDGroup::setAllState(boolean state) {
for (int i = 0; i < _numLeds; i++) {
_leds[i]->setState(state);
}
}
int LEDGroup::size() {
return _numLeds;
}
LED* LEDGroup::operator[](int index) {
if (index >= 0 && index < _numLeds) {
return _leds[index];
}
return NULL;
}
// must stay in sync with 'modes' enum
const char* LEDGroup::_modeStrings[5] = {
"none",
"blink",
"chase",
"twinkle",
"all"
};
const char* LEDGroup::getModeString(modes m) {
if (m < 0 || m >= NUM_MODES) {
return "";
}
return _modeStrings[m];
}
LEDGroup::modes LEDGroup::getModeFromString(const String& modeStr) {
for (int i = 0; i < NUM_MODES; i++) {
if (modeStr == _modeStrings[i]) {
return (modes)i;
}
}
return NUM_MODES;
}