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 <RHReliableDatagram.h>
#include <RH_RF95.h>
#include <SPI.h>
#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");
}

}
}

`