Fading effects added

LoRaReceiverInterrupt/LoRaReceiverInterrupt.ino

 /* 
-
- The default interrupt pin in SX1276/8(DIO0) connected to ESP32's GPIO26
- 
- by Aaron.Lee from HelTec AutoMation, ChengDu, China
- 成都惠利特自动化科技有限公司
- www.heltec.cn
- 
- this project also realess in GitHub:
- https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series
+ Receiver for exchange commands between LoRa Sender (long range)
+ Led PWM switch
 */
 #include <SPI.h>
 #include <LoRa.h>
@@ -27,6 +20,7 @@
 
 #define RELE_1 17
 #define RELE_2 21
+#define LED_PIN 13
 
 #define RELE_READ_1 36
 #define RELE_READ_2 37
@@ -36,10 +30,36 @@ SSD1306 display(0x3c, 4, 15);
 String lastCommand = "";
 String signalLevel = "";
 
+// --------------- LED PWM CONFIGURATION ----------------
+// use first channel of 16 channels (started from zero)
+#define LEDC_CHANNEL_0 0
+// use 5000 Hz as a LEDC base frequency
+#define LEDC_BASE_FREQ 10000
+// use 13 bit precission for LEDC timer
+#define LEDC_TIMER_13_BIT 13
+#define LED_PIN 13
+int brightness = 0;
+unsigned long previousMillisLed = 0;
+const long intervalLed = 60000 * 3;
+
+// Arduino like analogWrite
+// value has to be between 0 and valueMax
+void ledcAnalogWrite(uint8_t channel, uint32_t value, uint32_t valueMax = 255) {
+ // calculate duty, 8191 from 2 ^ 13 - 1
+ uint32_t duty = (8191 / valueMax) * min(value, valueMax);
+
+ // write duty to LEDC
+ ledcWrite(channel, duty);
+}
+
 void setup() {
  Serial.begin(115200); // initialize serial
  while (!Serial);
  Serial.println("Begin");
+
+ // Setup timer and attach timer to a led pin
+ ledcSetup(LEDC_CHANNEL_0, LEDC_BASE_FREQ, LEDC_TIMER_13_BIT);
+ ledcAttachPin(LED_PIN, LEDC_CHANNEL_0);
  
  //-------------------------------- DISPLAY ------------------------------
  pinMode(16,OUTPUT);
@@ -79,6 +99,19 @@ unsigned long previousMillis = 0;
 const long interval = 2500;
 bool isLoRaOnReceiveMode = false;
 
+bool isLedBegin = true;
+bool isLedOn = false;
+
+// fading final effects
+int fadeAmount = 7; 
+unsigned long previousMillisLedOff = 0;
+const long intervalLedOff = 18;
+
+//delay before switch off
+bool isLedOff = false;
+unsigned long previousMillisIsOnLedOff = 0;
+const long intervalIsOnLedOff = 30000 * 1;
+
 void loop() { 
  // do nothing
  unsigned long currentMillis = millis();
@@ -87,10 +120,6 @@ void loop() {
  digitalWrite(RELE_1, LOW);
  digitalWrite(RELE_2, LOW);
  }
- else
- {
- 
- }
 
  if(isLoRaOnReceiveMode)
  {
@@ -101,6 +130,36 @@ void loop() {
  LoRa.receive();
  isLoRaOnReceiveMode = false;
  }
+
+ // ------------ LED -----------------
+ if(isLedBegin){
+ if (currentMillis - previousMillisLed > intervalLed) {
+ brightness = 0;
+ isLedBegin = false;
+ isLedOff = true;
+ previousMillisLedOff = millis();
+ fadeAmount = 5;
+ }
+ }
+
+ if (currentMillis - previousMillisIsOnLedOff > intervalIsOnLedOff) {
+ isLedOff = false;
+ isLedBegin = true;
+ }
+
+ if(isLedOff){
+ if (currentMillis - previousMillisLedOff > intervalLedOff) {
+ brightness = brightness + fadeAmount;
+ 
+ // reverse the direction of the fading at the ends of the fade:
+ if (brightness <= 0 || brightness >= 255) {
+ fadeAmount = -fadeAmount;
+ }
+ previousMillisLedOff = millis();
+ }
+ }
+ 
+ ledcAnalogWrite(LEDC_CHANNEL_0, brightness);
  
  drawTextOLED(lastCommand);
 }
@@ -139,9 +198,11 @@ void onReceive(int packetSize)
 
  lastCommand = str;
 
+ Serial.println(lastCommand);
+
  if(str.indexOf("p : ") == 0)
  { 
- if(str.indexOf(r1) > 0) //TODO manca la parte di sicurezza
+ if(str.indexOf(r1) > 0)
  {
  setRele1();
  }
@@ -157,7 +218,7 @@ void onReceive(int packetSize)
  
  if(str.indexOf("r : ") == 0)
  { 
- if(str.indexOf(read_r1) > 0) //TODO manca la parte di sicurezza
+ if(str.indexOf(read_r1) > 0)
  {
  val = readRele1();
  }
@@ -170,6 +231,17 @@ void onReceive(int packetSize)
 
  lastCommand = str + " " + val;
  }
+
+ if(str.indexOf("b : ") == 0)
+ { 
+ val = str.substring(4);
+
+ brightness = val.toInt();
+
+ previousMillisLed = millis();
+
+ isLoRaOnReceiveMode = true;
+ }
  
  signalLevel = String(LoRa.packetRssi(), DEC);
 }
@@ -178,6 +250,11 @@ void setRele1()
 {
  digitalWrite(RELE_1, HIGH);
  previousMillis = millis();
+ // switch on light
+ brightness = 255;
+ previousMillisLed = millis();
+ previousMillisIsOnLedOff = millis() + intervalLed;
+ isLedOn = false;
 }
 
 void setRele2()

LoRaSender/LoRaSender.ino

@@ -121,7 +121,6 @@ void drawTextOLED(String text, String ttext, String rread, String signalLevel) {
 
 String s;
 unsigned long previousMillis = 0;
-unsigned long previousMillisGPIO = 0;
 const long interval = 10000;
 
 void loop(void)
@@ -163,7 +162,7 @@ void loop(void)
  s += ipStr;
  s += "";
  
- } else if (req.indexOf('/pin') > 0) {
+ } else if (req.indexOf("/pin") >= 0) {
  pinRequest(req);
  lastCommand = "";
  s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
@@ -172,7 +171,16 @@ void loop(void)
 
  previousMillis = currentMillis;
 
- } else if (req.indexOf('/read') > 0) {
+ } else if (req.indexOf("/brightness") >= 0) {
+ setBrightness(req);
+ lastCommand = "";
+ s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
+ s += req;
+ s += "";
+
+ previousMillis = currentMillis;
+
+ } else if (req.indexOf("/read") >= 0) {
  
  pinRequestRead(req);
  s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
@@ -181,7 +189,7 @@ void loop(void)
 
  previousMillis = currentMillis;
 
- } else if (req.indexOf('/check') > 0) {
+ } else if (req.indexOf("/check") >= 0) {
  //OK send s to browser
 
  if (currentMillis - previousMillis >= interval) {
@@ -193,15 +201,6 @@ void loop(void)
  s += lastCommand;
  s += "";
  }
- } else if (req.indexOf('/gpio') > 0) {
- //OK send s to browser
- 
- pinGPIO(req);
- s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
- s += req;
- s += "";
- 
- previousMillisGPIO = currentMillis + 2000;
  } else {
  s = "HTTP/1.1 404 Not Found\r\n\r\n";
 // Serial.println("Sending 404");
@@ -267,24 +266,32 @@ void pinRequest(String req)
  LoRa.receive();
 }
 
-void pinRequestRead(String req)
+void setBrightness(String req)
 {
  req = req.substring(req.lastIndexOf('/') + 1);
  int reqInt = req.toInt();
  // send packet
  LoRa.beginPacket();
- LoRa.print("r : ");
+ LoRa.print("b : ");
  LoRa.print(reqInt);
  LoRa.endPacket();
 
+ delay(1);
+
  // put the radio into receive mode
  LoRa.receive();
 }
 
-void pinGPIO(String req)
+void pinRequestRead(String req)
 {
  req = req.substring(req.lastIndexOf('/') + 1);
  int reqInt = req.toInt();
+ // send packet
+ LoRa.beginPacket();
+ LoRa.print("r : ");
+ LoRa.print(reqInt);
+ LoRa.endPacket();
 
- lastCommand = "gpio : " + String(reqInt);
+ // put the radio into receive mode
+ LoRa.receive();
 }