Some tweaks to new examples

examples/LoRaDuplexCallback/LoRaDuplexCallback.ino

@@ -14,6 +14,7 @@
 */
 #include <SPI.h>              // include libraries
 #include <LoRa.h>
+
 const int csPin = 7;          // LoRa radio chip select
 const int resetPin = 6;       // LoRa radio reset
 const int irqPin = 1;         // change for your board; must be a hardware interrupt pin
@@ -26,12 +27,15 @@ long lastSendTime = 0;        // last send time
 int interval = 2000;          // interval between sends
 
 void setup() {
-  while (!Serial);
   Serial.begin(9600);                   // initialize serial
+  while (!Serial);
+
   Serial.println("LoRa Duplex with callback");
+
+  // override the default CS, reset, and IRQ pins (optional)
   LoRa.setPins(csPin, resetPin, irqPin);// set CS, reset, IRQ pin
 
-  if (!LoRa.begin(915E6)) {             // initialize ratio at 915Mhz
+  if (!LoRa.begin(915E6)) {             // initialize ratio at 915 MHz
     Serial.println("LoRa init failed. Check your connections.");
     while (true);                       // if failed, do nothing
   }
@@ -42,14 +46,14 @@ void setup() {
 }
 
 void loop() {
-    if (millis() - lastSendTime > interval) {
-      String message = "HeLoRa 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
-    }
+  if (millis() - lastSendTime > interval) {
+    String message = "HeLoRa 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) {
@@ -63,7 +67,6 @@ void sendMessage(String outgoing) {
   msgCount++;                           // increment message ID
 }
 
-
 void onReceive(int packetSize) {
   if (packetSize == 0) return;          // if there's no packet, return
 
@@ -72,10 +75,13 @@ void onReceive(int packetSize) {
   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, so
     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
@@ -88,13 +94,13 @@ void onReceive(int packetSize) {
   }
 
   // if message is for this device, or broadcast, print details:
-  Serial.println("Received from:" + String(sender, HEX));
-  Serial.println("Sent to:" + 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("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();
 }