Initial commit

src/LED.cpp

@@ -0,0 +1,60 @@
+#include <Arduino.h>
+#include "LEDOutput.cpp"
+
+class LED{
+	LEDOutput* _output;
+	bool _on;
+	unsigned long _fadeDurationOn, _fadeDurationOff, _fadeStart, _fadeEnd;
+
+	unsigned long getFadeDuration(){
+		return _on ? _fadeDurationOn : _fadeDurationOff;
+	}
+
+	unsigned long getRemainingFadeTime(){
+		unsigned long now = millis();
+		return _fadeEnd >= now ? constrain(_fadeEnd - now, 0, getFadeDuration()) : 0;
+	}
+
+	float getMultiplier() {
+		float value = getRemainingFadeTime() / (float)getFadeDuration();
+		return 1.0f - value;
+	}
+
+	float getOutputMultiplier(){
+		float value = getMultiplier();
+		return _on ? value : 1.0f - value;
+	}
+
+	void reset(bool on){
+		if (on == _on)
+			return;
+		float oldMultiplier = getMultiplier();
+		_on = on;
+		_fadeStart = millis();
+		_fadeEnd = _fadeStart + (getFadeDuration() * oldMultiplier);
+	}
+
+public:
+	LED(LEDOutput* output, unsigned long fadeDurationOn, unsigned long fadeDurationOff) {
+		_output = output;
+		_fadeDurationOn = fadeDurationOn;
+		_fadeDurationOff = fadeDurationOff;
+	}
+
+	void on(){
+		reset(true);
+	}
+
+	void off(){
+		reset(false);
+	}
+
+	void toggle(){
+		reset(!_on);
+	}
+
+	void loop() {
+		float multiplier = getOutputMultiplier();
+		_output->writeFraction(1 - multiplier);
+	}
+};

src/LEDOutput.cpp

@@ -0,0 +1,22 @@
+#include <Arduino.h>
+
+#define LED_OUTPUT_FREQUENCY 490
+#define LED_OUTPUT_RESOLUTION 15
+#define LED_OUTPUT_PWM_RANGE 32767
+
+class LEDOutput {
+	unsigned int _channel;
+
+  public:
+	LEDOutput(unsigned int channel) {
+		_channel = channel;
+		ledcSetup(channel, LED_OUTPUT_FREQUENCY, LED_OUTPUT_RESOLUTION);
+	}
+
+	void attach(unsigned int pin){
+		ledcAttachPin(pin, _channel);
+	}
+	void writeFraction(float fraction){
+		ledcWrite(_channel, fraction * LED_OUTPUT_PWM_RANGE);
+	}
+};

src/Timer.cpp

@@ -0,0 +1,23 @@
+#include <Arduino.h>
+
+class Timer{
+private:
+	unsigned long _interval, _lastTick;
+	void (*_callback)(void);
+
+public:
+	Timer(unsigned long interval, void (*callback)(void)){
+		_interval = interval;
+		_callback = callback;
+		_lastTick = millis();
+	}
+
+	void loop(){
+		unsigned long tick = millis();
+
+		if (tick - _lastTick >= _interval){
+			_callback();
+			_lastTick = tick;
+		}
+	}
+};

src/main.cpp

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+#include "LED.cpp"
+#include "Timer.cpp"
+#include <Arduino.h>
+#include <BLEDevice.h>
+#include <BLEServer.h>
+#include <BLEUtils.h>
+
+#define FADE_IN_DURATION 500
+#define FADE_OUT_DURATION 2000
+
+#define SERVICE_UUID "4fafc201-1fb5-459e-8fcc-c5c9c331914b"
+#define CHARACTERISTIC_UUID "beb5483e-36e1-4688-b7f5-ea07361b26a8"
+
+class BluetoothCallback : public BLECharacteristicCallbacks {
+	LED *_led;
+	void onWrite(BLECharacteristic *pCharacteristic) {
+		std::string value = pCharacteristic->getValue();
+		if (value.length() > 0) {
+			Serial.println(value.c_str());
+			if (value == "on")
+				_led->on();
+			else
+				_led->off();
+		}
+	}
+
+	public:
+
+	BluetoothCallback(LED* led){
+		_led = led;
+	}
+
+};
+
+LEDOutput _ledOutput(0);
+LED _led(&_ledOutput, FADE_IN_DURATION, FADE_OUT_DURATION);
+
+void toggle(){
+	//_led.toggle();
+}
+
+Timer _timer(3000, &toggle);
+
+void setup() {
+	Serial.begin(115200);
+	_ledOutput.attach(16);
+	_ledOutput.attach(17);
+	_ledOutput.attach(5);
+	_ledOutput.attach(18);
+	_ledOutput.attach(23);
+
+	BLEDevice::init("Van Lights");
+	BLEServer *pServer = BLEDevice::createServer();
+	BLEService *pService = pServer->createService(SERVICE_UUID);
+	BLECharacteristic *pCharacteristic = pService->createCharacteristic(CHARACTERISTIC_UUID, BLECharacteristic::PROPERTY_READ | BLECharacteristic::PROPERTY_WRITE);
+
+	pCharacteristic->setCallbacks(new BluetoothCallback(&_led));
+
+	pCharacteristic->setValue("Hello World");
+	pService->start();
+
+	BLEAdvertising *pAdvertising = pServer->getAdvertising();
+	pAdvertising->start();
+}
+
+void loop() {
+	_led.loop();
+	_timer.loop();
+}