Add Uno -> RFM95 examples from Brian Norman

Examples/UNO_rf95_client/UNO_rf95_client.ino

@@ -0,0 +1,83 @@
+// rf95_client.pde
+// -*- mode: C++ -*-
+// Example sketch showing how to create a simple messageing client
+// with the RH_RF95 class. RH_RF95 class does not provide for addressing or
+// reliability, so you should only use RH_RF95 if you do not need the higher
+// level messaging abilities.
+// It is designed to work with the other example rf95_server
+// Tested with Anarduino MiniWirelessLoRa, Rocket Scream Mini Ultra Pro with
+// the RFM95W, Adafruit Feather M0 with RFM95
+
+#include <SPI.h>
+#include <RH_RF95.h>
+
+// Singleton instance of the radio driver
+RH_RF95 rf95(10, 2);
+
+int led = 7; // do not use SPI pins
+
+void setup()
+{
+  pinMode(led, OUTPUT);
+
+  Serial.begin(9600);
+  while (!Serial) ; // Wait for serial port to be available
+
+  Serial.println("Client starting");
+
+  if (!rf95.init())
+  {
+    Serial.println("rf95().init failed");
+    while (true) ;
+  }
+  Serial.println("rf95.init() ok");
+
+  // Defaults after init are 434.0MHz, 13dBm, Bw = 125 kHz, Cr = 4/5, Sf = 128chips/symbol, CRC on
+
+  rf95.setFrequency(868.0);
+
+  delay(100);
+}
+
+void loop()
+{
+  digitalWrite(led, HIGH);
+
+  Serial.println("Sending to rf95_server");
+
+  uint8_t data[] = "Hello World!";
+
+  rf95.send(data, sizeof(data));
+  rf95.waitPacketSent();
+
+  Serial.println("Packet sent");
+
+  // Now wait for a reply
+  uint8_t buf[RH_RF95_MAX_MESSAGE_LEN];
+  uint8_t len = sizeof(buf);
+
+  if (rf95.waitAvailableTimeout(3000))
+  {
+    // Should be a reply message for us now
+    if (rf95.recv(buf, &len))
+    {
+      Serial.print("got reply: ");
+      Serial.println((char*)buf);
+      //Serial.print("RSSI: ");
+      //Serial.println(rf95.lastRssi(), DEC);
+    }
+    else
+    {
+      Serial.println("rf95.recv() from server failed");
+    }
+  }
+  else
+  {
+    Serial.println("Timeout. No reply, is rf95_server running?");
+  }
+
+  digitalWrite(led, LOW);
+  delay(400);
+}
+
+

Examples/UNO_rf95_server/UNO_rf95_server.ino

@@ -0,0 +1,86 @@
+// rf95_server.pde
+// -*- mode: C++ -*-
+// Example sketch showing how to create a simple messageing server
+// with the RH_RF95 class. RH_RF95 class does not provide for addressing or
+// reliability, so you should only use RH_RF95  if you do not need the higher
+// level messaging abilities.
+// It is designed to work with the other example rf95_client
+// Tested with Anarduino MiniWirelessLoRa, Rocket Scream Mini Ultra Pro with
+// the RFM95W, Adafruit Feather M0 with RFM95
+
+#include <SPI.h>
+#include <RH_RF95.h>
+
+// Singleton instance of the radio driver
+RH_RF95 rf95(10,2);
+
+int led = 13; // do not use SPI pins
+
+void setup() 
+{
+  // Rocket Scream Mini Ultra Pro with the RFM95W only:
+  // Ensure serial flash is not interfering with radio communication on SPI bus
+//  pinMode(4, OUTPUT);
+//  digitalWrite(4, HIGH);
+
+  pinMode(led, OUTPUT);     
+  Serial.begin(9600);
+  while (!Serial) ; // Wait for serial port to be available
+  Serial.println("Server starting");
+  
+  if (!rf95.init())
+    {
+    Serial.println("init failed");  
+    while(true) ;
+    }
+    
+  Serial.println("rf95.init() ok");
+
+  // Defaults after init are 434.0MHz, 13dBm, Bw = 125 kHz, Cr = 4/5, Sf = 128chips/symbol, CRC on
+
+ 
+  rf95.setFrequency(868.0);
+  //rf95.setTxPower(10, true);
+   
+}
+
+void loop()
+{
+  
+  if (rf95.available())
+    {
+      Serial.print("rf95.available() ok ");
+      
+    // Should be a message for us now   
+    uint8_t buf[RH_RF95_MAX_MESSAGE_LEN];
+    uint8_t len = sizeof(buf);
+    if (rf95.recv(buf, &len))
+      {
+
+      //RH_RF95::printBuffer("request: ", buf, len);
+      
+      Serial.print("got request: ");
+      Serial.println((char*)buf);
+      
+      //Serial.print("RSSI: ");
+      //Serial.println(rf95.lastRssi(), DEC);
+      
+      // Send a reply
+      digitalWrite(led, HIGH);
+      Serial.println("Sending a reply");
+      
+      uint8_t data[] = "And hello back to you";
+      rf95.send(data, sizeof(data));
+      rf95.waitPacketSent();
+      
+      Serial.println("Reply sent");
+      digitalWrite(led, LOW);
+      }
+    else
+      {
+      Serial.println("recv failed - empty buffer");
+      }
+    }
+}
+
+

dht22/dht22.ino

@@ -1,7 +1,7 @@
 #include "lib/SimpleDHT/SimpleDHT.h"
 #include "lib/SimpleDHT/SimpleDHT.cpp"
 
-const int dhtA_pin = 5;
+const int dhtA_pin = 7;
 
 SimpleDHT22 dhtA;
 
@@ -10,19 +10,16 @@ void setup() {
   Serial.println("DHT22 Demo");
   Serial.println("==========");
   
-  Serial.print("Configuring pins - ");
-  pinMode(dhtA_pin, INPUT_PULLUP);
-  Serial.println("done");
-  
   Serial.print("Waiting to warm DHT22 up - ");
   delay(2000); // Give the DHT22 time to warm up
   Serial.println("done"); 
 }
 
 void loop() {
-  float temp, humidity;
-
+  float temp = 0, humidity = 0;
+  
   int read_error = dhtA.read2(dhtA_pin, &temp, &humidity, NULL);
+  Serial.println("Read complete - analysing result");
   if(read_error != SimpleDHTErrSuccess) {
     Serial.print("Error: Failed reading from the DHT22. Code: ");
     Serial.println(read_error);