Initial commit

transmit.ino

+// Feather9x_TX
+// -*- mode: C++ -*-
+// Example sketch showing how to create a simple messaging client (transmitter)
+// 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 Feather9x_RX
+
+#include <SPI.h>
+#include <RH_RF95.h>
+
+// for feather32u4 
+#define RFM95_CS 8
+#define RFM95_RST 4
+#define RFM95_INT 7
+
+
+/* for feather m0  
+#define RFM95_CS 8
+#define RFM95_RST 4
+#define RFM95_INT 3
+*/
+
+/* for shield 
+#define RFM95_CS 10
+#define RFM95_RST 9
+#define RFM95_INT 7
+*/
+
+/* Feather 32u4 w/wing
+#define RFM95_RST     11   // "A"
+#define RFM95_CS      10   // "B"
+#define RFM95_INT     2    // "SDA" (only SDA/SCL/RX/TX have IRQ!)
+*/
+
+/* Feather m0 w/wing 
+#define RFM95_RST     11   // "A"
+#define RFM95_CS      10   // "B"
+#define RFM95_INT     6    // "D"
+*/
+
+#if defined(ESP8266)
+  /* for ESP w/featherwing */ 
+  #define RFM95_CS  2    // "E"
+  #define RFM95_RST 16   // "D"
+  #define RFM95_INT 15   // "B"
+
+#elif defined(ESP32)  
+  /* ESP32 feather w/wing */
+  #define RFM95_RST     27   // "A"
+  #define RFM95_CS      33   // "B"
+  #define RFM95_INT     12   //  next to A
+
+#elif defined(NRF52)  
+  /* nRF52832 feather w/wing */
+  #define RFM95_RST     7   // "A"
+  #define RFM95_CS      11   // "B"
+  #define RFM95_INT     31   // "C"
+  
+#elif defined(TEENSYDUINO)
+  /* Teensy 3.x w/wing */
+  #define RFM95_RST     9   // "A"
+  #define RFM95_CS      10   // "B"
+  #define RFM95_INT     4    // "C"
+#endif
+
+// Change to 434.0 or other frequency, must match RX's freq!
+#define RF95_FREQ 868.1
+
+// Singleton instance of the radio driver
+RH_RF95 rf95(RFM95_CS, RFM95_INT);
+
+void setup() 
+{
+  pinMode(RFM95_RST, OUTPUT);
+  digitalWrite(RFM95_RST, HIGH);
+
+  Serial.begin(115200);
+  while (!Serial) {
+    delay(1);
+  }
+
+  delay(100);
+
+  Serial.println("Feather LoRa TX Test!");
+
+  // manual reset
+  digitalWrite(RFM95_RST, LOW);
+  delay(10);
+  digitalWrite(RFM95_RST, HIGH);
+  delay(10);
+
+  while (!rf95.init()) {
+    Serial.println("LoRa radio init failed");
+    Serial.println("Uncomment '#define SERIAL_DEBUG' in RH_RF95.cpp for detailed debug info");
+    while (1);
+  }
+  Serial.println("LoRa radio init OK!");
+
+  // Defaults after init are 434.0MHz, modulation GFSK_Rb250Fd250, +13dbM
+  if (!rf95.setFrequency(RF95_FREQ)) {
+    Serial.println("setFrequency failed");
+    while (1);
+  }
+  Serial.print("Set Freq to: "); Serial.println(RF95_FREQ);
+  
+  // Defaults after init are 434.0MHz, 13dBm, Bw = 125 kHz, Cr = 4/5, Sf = 128chips/symbol, CRC on
+
+  // The default transmitter power is 13dBm, using PA_BOOST.
+  // If you are using RFM95/96/97/98 modules which uses the PA_BOOST transmitter pin, then 
+  // you can set transmitter powers from 5 to 23 dBm:
+  rf95.setTxPower(23, false);
+}
+
+int16_t packetnum = 0;  // packet counter, we increment per xmission
+
+void loop()
+{
+  delay(1000); // Wait 1 second between transmits, could also 'sleep' here!
+  Serial.println("Transmitting..."); // Send a message to rf95_server
+  
+  char radiopacket[20] = "packet from feather";
+  Serial.print("Sending "); Serial.println(radiopacket);
+  radiopacket[19] = 0;
+  
+  Serial.println("Sending...");
+  delay(10);
+  rf95.send((uint8_t *)radiopacket, 20);
+
+  Serial.println("Waiting for packet to complete..."); 
+  delay(10);
+  rf95.waitPacketSent();
+  // Now wait for a reply
+  uint8_t buf[RH_RF95_MAX_MESSAGE_LEN];
+  uint8_t len = sizeof(buf);
+
+  Serial.println("Waiting for reply...");
+  if (rf95.waitAvailableTimeout(1000))
+  { 
+    // 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("Receive failed");
+    }
+  }
+  else
+  {
+    Serial.println("No reply, is there a listener around?");
+  }
+
+}