Altering default radio settings and sleeping / ending the library

[BrendonHills]

Hi all, I hope you can shed a little light on two issues concerning radio settings in this library please.

I am a relatively new beginner programmer and have been having some success building on the example libraries. But I have come across some issues I cannot understand and implement. I have read, read again, and read some more, the relevant documentation on the library, but I think my relative inexperience means that I either don't understand it all, or implementation of some features evades me.

I want to achieve two main things:

1. I want to be able to amend modem settings for BW, CR, SF etc. in the Reliable Datagram Client and Server examples. I am happy to use one of the available recommended settings - I just can't seem to implement any of them, other than the default of course.

2. I want to put the library / radio module to sleep, at the same time as my controller, pending hardware interrupts.

I have attached my reliable datagram server code below, as an example, and have commented the error messages I am getting (highlighted) with modem settings within void setup() - what am I doing wrong please?

In relation to sleep - not in the example - how is this called? Do I use driver.sleep(); manager.sleep(); or something else? Finally, in relation to sleep - is sleeping the radio the most power efficient thing to do when putting the main board to sleep? When I used another library, by Sandeep Mistry, calling LoRa.end() was more power efficient that LoRa.sleep() by some margin. Is there an end() function in this library - I cant see it!!

I am using Arduino Feather 32u4 LoRa boards, the RadioHead LoRa library and lowPower.h for sleep mode in the client code

Thank you in anticipation for your comments.

Daimon. G4USI.

`#include

include

include

define RFM95_CS 8

define RFM95_RST 4

define RFM95_INT 7

define CLIENT_ADDRESS 1

define SERVER_ADDRESS 2

RH_RF95 driver(RFM95_CS, RFM95_INT); RHReliableDatagram manager(driver, SERVER_ADDRESS);

define waterLowPin 9

define waterHighPin 10

define healthOKPin 11

define rechargePin 12

void setup() { pinMode(RFM95_RST, OUTPUT); digitalWrite(RFM95_RST, HIGH); delay(100); // manual reset digitalWrite(RFM95_RST, LOW); delay(10); digitalWrite(RFM95_RST, HIGH); delay(10);

Serial.begin(9600); if (!manager.init()) Serial.println("init failed"); else Serial.println("Sensor Acknowledgement Test RX"); // Defaults after init are 434.0MHz, 13dBm, Bw = 125 kHz, Cr = 4/5, Sf = 128chips/symbol, CRC on

// you can set transmitter powers from 5 to 23 dBm: driver.setFrequency(870.0); driver.setTxPower(14, false); //driver.setModemConfig(Bw125Cr48Sf4096);// error msg - Bw125Cr48Sf4096 not declared in this scope //driver.setSpreadingFactor(12);// error msg - Class RH_RF95 has no member named 'setSpreadingFactor' //driver.setSignalBandwidth(125000);//error msg - Class RH_RF95 has no member named 'setSignalBandwidth' //driver.setCodingRate4(8);//error msg - Class RH_RF95 has no member named 'setCodingRate4'

pinMode (waterLowPin, OUTPUT); pinMode (waterHighPin, OUTPUT); pinMode (healthOKPin, OUTPUT); pinMode (rechargePin, OUTPUT); }

uint8_t data[] = "Received"; // Dont put this on the stack: uint8_t buf[RH_RF95_MAX_MESSAGE_LEN];

void loop() { if (manager.available()) { // Wait for a message addressed to us from the client uint8_t len = sizeof(buf); uint8_t from; if (manager.recvfromAck(buf, &len, &from)) { //Serial.print("message from : 0x"); // Serial.print(from, HEX); //Serial.print(": "); // Serial.println((char*)buf); switch (buf[0]) { case 48: Serial.println("Water LOW"); digitalWrite (waterLowPin, HIGH); delay (1000); digitalWrite (waterLowPin, LOW); break; case 49: Serial.println("Water HIGH"); digitalWrite (waterHighPin, HIGH); delay (1000); digitalWrite (waterHighPin, LOW); break; case 50: Serial.println("Health OK"); digitalWrite (healthOKPin, HIGH); delay (1000); digitalWrite (healthOKPin , LOW); break; case 51: Serial.println("Recharge battery"); digitalWrite (rechargePin, HIGH); delay (1000); digitalWrite (rechargePin , LOW); break; }

  // Send a reply back to the originator client
  if (!manager.sendtoWait(data, sizeof(data), from))
    Serial.println("sendtoWait failed");
}

} }

`