bug fix - change std library

HalfDuplex/HalfDuplex/HalfDuplex.ino

-#include <SPI.h>
-#include <LoRa.h>
-
-// Pin definetion of WIFI LoRa 32
-// HelTec AutoMation 2017 support@heltec.cn 
-#define SCK     5    // GPIO5  -- SX127x's SCK
-#define MISO    19   // GPIO19 -- SX127x's MISO
-#define MOSI    27   // GPIO27 -- SX127x's MOSI
-#define SS      18   // GPIO18 -- SX127x's CS
-#define RST     14   // GPIO14 -- SX127x's RESET
-#define DI00     26   // GPIO26 -- SX127x's IRQ(Interrupt Request)
-
-#define BAND    915E6  //you can set band here directly,e.g. 868E6,915E6
-#define PABOOST true
-  
-byte localAddress = 0xBB;     // address of this device
-byte destination = 0xFF;      // destination to send to
-
-String outgoing;              // outgoing message
-byte msgCount = 0;            // count of outgoing messages
-long lastSendTime = 0;        // last send time
-int interval = 2000;          // interval between sends
-
-void setup()
-{
-  Serial.begin(115200);                   // initialize serial
-  while (!Serial);
-
-  Serial.println("LoRa Duplex with callback");
-
-  SPI.begin(SCK,MISO,MOSI,SS);
-  LoRa.setPins(SS,RST,DI00);// set CS, reset, IRQ pins
-
-  LoRa.enableCrc();
-  LoRa.setSyncWord(0xF3);
-  
-  if (!LoRa.begin(BAND))
-  {
-    Serial.println("LoRa init failed. Check your connections.");
-    while (true);                       // if failed, do nothing
-  }
-
-  LoRa.onReceive(onReceive);
-  LoRa.receive();
-  Serial.println("LoRa init succeeded.");
-}
-
-void loop()
-{
-  if (millis() - lastSendTime > interval)
-  {
-    String message = "Hello World!";   // send a message
-    sendMessage(message);
-    Serial.println("Sending " + message);
-    lastSendTime = millis();            // timestamp the message
-    interval = random(2000) + 1000;     // 2-3 seconds
-    LoRa.receive();                     // go back into receive mode
-  }
-}
-
-void sendMessage(String outgoing)
-{
-  LoRa.setSyncWord(0xF3);
-  LoRa.beginPacket();                   // start packet
-  LoRa.write(destination);              // add destination address
-  LoRa.write(localAddress);             // add sender address
-  LoRa.write(msgCount);                 // add message ID
-  LoRa.write(outgoing.length());        // add payload length
-  LoRa.print(outgoing);                 // add payload
-  LoRa.endPacket();                     // finish packet and send it
-  msgCount++;                           // increment message ID
-}
-
-void onReceive(int packetSize)
-{
-  if (packetSize == 0) return;          // if there's no packet, return
-
-  // read packet header bytes:
-  int recipient = LoRa.read();          // recipient address
-  byte sender = LoRa.read();            // sender address
-  byte incomingMsgId = LoRa.read();     // incoming msg ID
-  byte incomingLength = LoRa.read();    // incoming msg length
-
-  String incoming = "";                 // payload of packet
-
-  while (LoRa.available())             // can't use readString() in callback
-  {
-    incoming += (char)LoRa.read();      // add bytes one by one
-  }
-
-  if (incomingLength != incoming.length())   // check length for error
-  {
-    Serial.println("error: message length does not match length");
-    return;                             // skip rest of function
-  }
-
-  // if the recipient isn't this device or broadcast,
-  if (recipient != localAddress && recipient != 0xFF)
-  {
-    Serial.println("This message is not for me.");
-    return;                             // skip rest of function
-  }
-
-  // if message is for this device, or broadcast, print details:
-  Serial.println("Received from: 0x" + String(sender, HEX));
-  Serial.println("Sent to: 0x" + String(recipient, HEX));
-  Serial.println("Message ID: " + String(incomingMsgId));
-  Serial.println("Message length: " + String(incomingLength));
-  Serial.println("Message: " + incoming);
-  Serial.println("RSSI: " + String(LoRa.packetRssi()));
-  Serial.println("Snr: " + String(LoRa.packetSnr()));
-  Serial.println();
-}

LoRaReceiverInterrupt/LoRaReceiverInterrupt.ino

 /* 
     Receiver for exchange commands between LoRa Sender (long range)
-    Led PWM switch
 */
-#include <SPI.h>
-#include <LoRa.h>
-#include "SSD1306.h" // alias for `#include "SSD1306Wire.h"`
+#include <heltec.h>
 
-// Pin definetion of WIFI LoRa 32
-// HelTec AutoMation 2017 support@heltec.cn 
-#define SCK     5    // GPIO5  -- SX127x's SCK
-#define MISO    19   // GPIO19 -- SX127x's MISO
-#define MOSI    27   // GPIO27 -- SX127x's MOSI
-#define SS      18   // GPIO18 -- SX127x's CS
-#define RST     14   // GPIO14 -- SX127x's RESET
-#define DI0     26   // GPIO26 -- SX127x's IRQ(Interrupt Request)
-
-#define BAND    868E6  //you can set band here directly,e.g. 868E6,915E6
+byte localAddress = 0xBB;     // address of this device
+byte destination = 0xAA;      // destination to send to
 
 #define RELE_1 17
 #define RELE_2 21
-#define LED_PIN 13
+#define RELE_3 13
 
 #define RELE_READ_1 36
 #define RELE_READ_2 37
 
-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 * 10;
-
-// 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() {
+  Heltec.begin(true /*DisplayEnable Enable*/, true /*LoRa Enable*/, true /*Serial Enable*/, true /*LoRa use PABOOST*/, 868E6 /*LoRa RF working band*/);
+  Heltec.display -> clear();
+  
+  Serial.println("LoRa Sender");
 
-  // 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);
+  LoRa.setTxPowerMax(10);
+  //LoRa.enableCrc();
+  LoRa.setPreambleLength(4);
   
-  //-------------------------------- DISPLAY ------------------------------
-  pinMode(16,OUTPUT);
-  digitalWrite(16, LOW);    // set GPIO16 low to reset OLED
-  delay(50); 
-  digitalWrite(16, HIGH); // while OLED is running, must set GPIO16 in high
-  // Initialising the UI will init the display too.
-  display.init();
-  display.flipScreenVertically();
-  display.setFont(ArialMT_Plain_10);
-  //------------------------------------------------------------------------
-
-  SPI.begin(SCK,MISO,MOSI,SS);
-  LoRa.enableCrc();
-  LoRa.setTxPower(20,PA_OUTPUT_PA_BOOST_PIN);
-  LoRa.setPreambleLength(8);
-  LoRa.setPins(SS,RST,DI0);
-  if (!LoRa.begin(BAND)) {
-    drawTextOLED("Starting LoRa failed!");
-    while (1);
-  }
+  // register the receive callback
+  LoRa.onReceive(onReceive);
+  // put the radio into receive mode
+  LoRa.receive();
 
+  //  LoRa.setTxPower(20,PA_OUTPUT_PA_BOOST_PIN);
+  //  LoRa.enableCrc();
+  //  LoRa.setPreambleLength(1);
+
+  //---------------------------------------------
+  
   pinMode(RELE_1, OUTPUT);
   pinMode(RELE_2, OUTPUT);
+  pinMode(RELE_3, OUTPUT);
 
   pinMode(RELE_READ_1, INPUT_PULLUP);
   pinMode(RELE_READ_2, INPUT_PULLUP);
-
-  // register the receive callback
-  LoRa.onReceive(onReceive);
-
-  // put the radio into receive mode
-  LoRa.receive();
 }
 
-unsigned long previousMillis = 0;
-const long interval = 2500;
+unsigned long previousMillisLed = 0;
+const long intervalLed = 60000 * 10;
 bool isLoRaOnSenderMode = 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 = 60000 * 1;
+bool isLedOff = true;
 
 void loop() {  
-  // do nothing
   unsigned long currentMillis = millis();
-  if (currentMillis - previousMillis > interval) {
+  
+  if (isLedOff) {
+    isLedOff = false;
     //Reset rele
     digitalWrite(RELE_1, LOW);
     digitalWrite(RELE_2, LOW);
   }
 
+  if(currentMillis - previousMillisLed > intervalLed){
+    digitalWrite(RELE_3, LOW);
+    //ESP.restart();
+  }
+
   if(isLoRaOnSenderMode)
   {
-    for(int i = 0; i < 10; i++)
-    {
+    isLoRaOnSenderMode = false;
+    
+    String outgoing = lastCommand;
+
+    for(int i = 0; i < 10; i++){
+      // send packet
       LoRa.beginPacket();
-      LoRa.print(lastCommand);
+      
+      LoRa.write(destination);              // add destination address
+      LoRa.write(localAddress);             // add sender address
+      LoRa.write(outgoing.length());        // add payload length
+      LoRa.print(outgoing);                 // add payload
+      
       LoRa.endPacket();
     }
     
+    // put the radio into receive mode
     LoRa.receive();
-    isLoRaOnSenderMode = 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);
-}
-
-void drawTextOLED(String text) {
-  display.clear();
-  display.setTextAlignment(TEXT_ALIGN_LEFT);
-  
-  display.setFont(ArialMT_Plain_10);
-  display.drawString(0, 0, text);
-  
-  display.setFont(ArialMT_Plain_10);
-  display.drawString(0, 20, "Level : " + signalLevel);
-
-  display.setFont(ArialMT_Plain_10);
-  display.drawString(0, 40, "Giacomo Lavermicocca");
-
-  display.display();
 }
 
 String r1 = String(RELE_1, DEC);
 String r2 = String(RELE_2, DEC);
+String r3 = String(RELE_3, DEC);
 
 String read_r1 = String(RELE_READ_1, DEC);
 String read_r2 = String(RELE_READ_2, DEC);
 
+String val = "";
+
 void onReceive(int packetSize)
 {
-  //LoRa.crc();
-  // received a packet
-  String str = "";
-  for (int i = 0; i < packetSize; i++)
+  if (packetSize == 0) return;          // if there's no packet, return
+
+  // read packet header bytes:
+  int recipient = LoRa.read();          // recipient address
+  byte sender = LoRa.read();            // sender address
+  byte incomingLength = LoRa.read();    // incoming msg length
+
+  String incoming = "";                 // payload of packet
+
+  while (LoRa.available())             // can't use readString() in callback
+  {
+    incoming += (char)LoRa.read();      // add bytes one by one
+  }
+
+  if (incomingLength != incoming.length())   // check length for error
+  {
+    Serial.println("error: message length does not match length");
+    return;                             // skip rest of function
+  }
+
+  // if the recipient isn't this device or broadcast,
+  if (recipient != localAddress)
   {
-    char p = (char)LoRa.read();
-    str += p;
+    Serial.println("This message is not for me.");
+    return;                             // skip rest of function
   }
 
-  lastCommand = str;
+  // if message is for this device, or broadcast, print details:
+  Serial.println("Received from: 0x" + String(sender, HEX));
+  Serial.println("Sent to: 0x" + String(recipient, HEX));
+  Serial.println("Message length: " + String(incomingLength));
+  Serial.println("Message: " + incoming);
+  Serial.println("RSSI: " + String(LoRa.packetRssi()));
+  Serial.println("Snr: " + String(LoRa.packetSnr()));
+  Serial.println();
+  
+  // received a packet
+  String str = incoming;
 
   if(str.indexOf("p : ") == 0)
   {        
@@ -208,14 +148,19 @@ void onReceive(int packetSize)
     {
       setRele2();
     }
+    if(str.indexOf(r3) > 0)
+    {
+      setRele3();
+    }
+
+    lastCommand = str;
 
     isLoRaOnSenderMode = true;
   }
-
-  String val = "";
   
   if(str.indexOf("r : ") == 0)
-  {    
+  {
+    val = "";
     if(str.indexOf(read_r1) > 0)
     {
       val = readRele1();
@@ -229,48 +174,42 @@ void onReceive(int packetSize)
 
     lastCommand = str + " " + val;
   }
-
-  if(str.indexOf("b : ") == 0)
-  {    
-    val = str.substring(4);
-
-    brightness = val.toInt();
-
-    previousMillisLed = millis();
-
-    isLoRaOnSenderMode = true;
-  }
-  
-  signalLevel = String(LoRa.packetRssi(), DEC);
 }
 
 void setRele1()
 {
+  isLedOff = true;
   digitalWrite(RELE_1, HIGH);
-  previousMillis = millis();
+  digitalWrite(RELE_3, HIGH); // LUCI LED
+  delay(2000);
+
+  previousMillisLed = millis();
 }
 
 void setRele2()
 {
+  isLedOff = true;
   digitalWrite(RELE_2, HIGH);
-  previousMillis = millis();
-  // switch on light
-  brightness = 255;
+  digitalWrite(RELE_3, HIGH); // LUCI LED
+  delay(2000);
+
+  previousMillisLed = millis();
+}
+
+void setRele3()
+{
+  digitalWrite(RELE_3, HIGH);
   previousMillisLed = millis();
-  previousMillisIsOnLedOff = millis() + intervalLed;
-  isLedOn = false;
 }
 
 String readRele1()
 {
-  previousMillis = millis();
   String v = String(digitalRead(RELE_READ_1), DEC);
   return v;
 }
 
 String readRele2()
 {
-  previousMillis = millis();
   String v = String(digitalRead(RELE_READ_2), DEC);
   return v;
 }

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