experimental_RX

// 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;
//RH_RF95 rf95(5, 2); // Rocket Scream Mini Ultra Pro with the RFM95W
RH_RF95 rf95(8, 3); // Adafruit Feather M0 with RFM95

// Need this on Arduino Zero with SerialUSB port (eg RocketScream Mini Ultra Pro)
//#define Serial SerialUSB

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);

  Serial.begin(115200);
  while (!Serial) ; // Wait for serial port to be available
  if (!rf95.init())
    Serial.println("init failed");
  // Defaults after init are 434.0MHz, 13dBm, Bw = 125 kHz, Cr = 4/5, Sf = 128chips/symbol, CRC on
  rf95.setModemConfig(RH_RF95::Bw500Cr45Sf128);
  // 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.setFrequency(915.0);
  rf95.setTxPower(23, false);
  // If you are using Modtronix inAir4 or inAir9,or any other module which uses the
  // transmitter RFO pins and not the PA_BOOST pins
  // then you can configure the power transmitter power for -1 to 14 dBm and with useRFO true.
  // Failure to do that will result in extremely low transmit powers.
//  driver.setTxPower(14, true);
}

void loop()
{
//  Serial.println("Sending to rf95_server");
  // Send a message to rf95_server

  //uint8_t data[] = "Hello World!";
  //rf95.send(data, sizeof(data));

  //rf95.waitPacketSent();
  // Now wait for a reply
  uint8_t buf[RH_RF95_MAX_MESSAGE_LEN];
  uint8_t len = sizeof(buf);

  //if(rf95.waitAvailableTimeout(400))
  //{
    // 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("NODATA");
    }
  //}
  //else
  //{
    //Serial.println("NODATA");
  //}
  delay(50);
}