@srnet hey, thank you for your help, I've used the examples duplex code and have successfully been able to have a button pressed and 'abort the flight' thank you 
I'll post the finish code just incase someone wants to use this as help for themselves in their future projects
Here's the 'rocket' sender
#include <SPI.h> // include libraries
#include <LoRa.h>
#include <Adafruit_BMP280.h>
#include <Wire.h>
Adafruit_BMP280 bmp;
const int blue = 3;//set blue to pin 3
const int red = 1;//set red to pin 5
const int green = 2;//set green to pin 6
const int csPin = 22; // LoRa radio chip select
const int resetPin = 8; // LoRa radio reset
const int irqPin = 9; // change for your board; must be a hardware interrupt pin
String outgoing; // outgoing message
String Abort = "ABORT!";
byte msgCount = 0; // count of outgoing messages
//Original
byte localAddress = 0xBB; // address of this device
byte destination = 0xFF; // destination to send to
//byte localAddress = 0xFF; // address of this device
//byte destination = 0xBB;
long lastSendTime = 0; // last send time
int interval = 2000; // interval between sends
double temp;
double pressure;
String tempData;
String pressureData;
String Data;
void setup() {
Serial.begin(9600); // initialize serial
delay(2000);
//while (!Serial);
Serial.println("LoRa Duplex Rocket");
// override the default CS, reset, and IRQ pins (optional)
LoRa.setPins(csPin, resetPin, irqPin);// set CS, reset, IRQ pin
//LoRa.setPins(22, 8, 9);
if (!LoRa.begin(433E6)) { // initialize ratio at 915 MHz
Serial.println("LoRa init failed. Check your connections.");
while (true); // if failed, do nothing
}
LoRa.setTxPower(50);
bmp.begin(0x76);
bmp.setSampling(Adafruit_BMP280::MODE_NORMAL, /* Operating Mode. */
Adafruit_BMP280::SAMPLING_X2, /* Temp. oversampling */
Adafruit_BMP280::SAMPLING_X16, /* Pressure oversampling */
Adafruit_BMP280::FILTER_X16, /* Filtering. */
Adafruit_BMP280::STANDBY_MS_500);
pinMode(red, OUTPUT);//set red as an output
pinMode(green, OUTPUT);//set green as an output
pinMode(blue, OUTPUT);//set blue as an output
digitalWrite(red,LOW);
digitalWrite(green,LOW);
digitalWrite(blue,LOW);
Serial.println("LoRa init succeeded.");
}
void loop() {
if (millis() - lastSendTime > interval) {
//Message = bmp read
temp = bmp.readTemperature();
pressure = bmp.readPressure();
tempData = String(temp, 2) + " *C ";
pressureData = String(pressure, 2) + " Pa";
Data = tempData + pressureData;
sendMessage(Data);
Serial.println("Sending " + Data);
lastSendTime = millis(); // timestamp the message
interval = random(2000) + 1000; // 2-3 seconds
}
// parse for a packet, and call onReceive with the result:
onReceive(LoRa.parsePacket());
}
void sendMessage(String outgoing) {
LoRa.beginPacket(); // start packet
LoRa.write(destination); // add destination address
LoRa.write(localAddress); // add sender address
LoRa.write(msgCount); // add message ID
LoRa.write(outgoing.length()); // add payload length
LoRa.print(outgoing); // add payload
LoRa.endPacket(); // finish packet and send it
msgCount++; // increment message ID
}
void onReceive(int packetSize) {
if (packetSize == 0) return; // if there's no packet, return
// read packet header bytes:
int recipient = LoRa.read(); // recipient address
byte sender = LoRa.read(); // sender address
byte incomingMsgId = LoRa.read(); // incoming msg ID
byte incomingLength = LoRa.read(); // incoming msg length
String incoming = "";
while (LoRa.available()) {
incoming += (char)LoRa.read();
}
if (incoming == Abort){
digitalWrite(red,HIGH);
while(1);
}
if (incomingLength != incoming.length()) { // check length for error
Serial.println("error: message length does not match length");
return; // skip rest of function
}
// if the recipient isn't this device or broadcast,
if (recipient != localAddress && recipient != 0xFF) {
Serial.println("This message is not for me.");
return; // skip rest of function
}
// if message is for this device, or broadcast, print details:
Serial.println("Received from: 0x" + String(sender, HEX));
Serial.println("Sent to: 0x" + String(recipient, HEX));
Serial.println("Message ID: " + String(incomingMsgId));
Serial.println("Message length: " + String(incomingLength));
Serial.println("Message: " + incoming);
Serial.println("RSSI: " + String(LoRa.packetRssi()));
Serial.println("Snr: " + String(LoRa.packetSnr()));
Serial.println();
}
Here's the station code, which is used to press the button to abort the flight
#include <SPI.h> // include libraries
#include <LoRa.h>
const int csPin = 10; // LoRa radio chip select
const int resetPin = 9; // LoRa radio reset
const int irqPin = 2; // change for your board; must be a hardware interrupt pin
const int buttonPin = 5;
String outgoing; // outgoing message
int buttonState = 0;
bool Abort = false;
byte msgCount = 0; // count of outgoing messages
byte localAddress = 0xBB; // address of this device
byte destination = 0xFF; // destination to send to
long lastSendTime = 0; // last send time
int interval = 2000; // interval between sends
void setup() {
Serial.begin(9600); // initialize serial
delay(2000);
//while (!Serial);
pinMode(buttonPin, INPUT);
Serial.println("LoRa Duplex");
// override the default CS, reset, and IRQ pins (optional)
LoRa.setPins(csPin, resetPin, irqPin);// set CS, reset, IRQ pin
if (!LoRa.begin(433E6)) { // initialize ratio at 915 MHz
Serial.println("LoRa init failed. Check your connections.");
while (true); // if failed, do nothing
}
Serial.println("LoRa init succeeded.");
}
void loop() {
buttonState = digitalRead(buttonPin);
if (Abort == false){
if (millis() - lastSendTime > interval) {
if (buttonState == HIGH) {
Abort = true;
String message = "ABORT!"; // send a message
sendMessage(message);
Serial.println(message);
lastSendTime = millis(); // timestamp the message
interval = random(2000) + 1000; // 2-3 seconds
}
}
Serial.println("Searching");
}
else{
String message = "ABORT!"; // send a message
sendMessage(message);
Serial.println("Sending " + message);
lastSendTime = millis(); // timestamp the message
interval = random(2000) + 1000; // 2-3 seconds
}
// parse for a packet, and call onReceive with the result:
onReceive(LoRa.parsePacket());
}
void sendMessage(String outgoing) {
LoRa.beginPacket(); // start packet
LoRa.write(destination); // add destination address
LoRa.write(localAddress); // add sender address
LoRa.write(msgCount); // add message ID
LoRa.write(outgoing.length()); // add payload length
LoRa.print(outgoing); // add payload
LoRa.endPacket(); // finish packet and send it
msgCount++; // increment message ID
}
void onReceive(int packetSize) {
if (packetSize == 0) return; // if there's no packet, return
// read packet header bytes:
int recipient = LoRa.read(); // recipient address
byte sender = LoRa.read(); // sender address
byte incomingMsgId = LoRa.read(); // incoming msg ID
byte incomingLength = LoRa.read(); // incoming msg length
String incoming = "";
//Recieving the data
while (LoRa.available()) {
incoming += (char)LoRa.read();
}
if (incomingLength != incoming.length()) { // check length for error
Serial.println("error: message length does not match length");
return; // skip rest of function
}
// if the recipient isn't this device or broadcast,
if (recipient != localAddress && recipient != 0xFF) {
Serial.println("This message is not for me.");
return; // skip rest of function
}
// if message is for this device, or broadcast, print details:
Serial.println("Received from: 0x" + String(sender, HEX));
Serial.println("Sent to: 0x" + String(recipient, HEX));
Serial.println("Message ID: " + String(incomingMsgId));
Serial.println("Message length: " + String(incomingLength));
Serial.println("Message: " + incoming);
Serial.println("RSSI: " + String(LoRa.packetRssi()));
Serial.println("Snr: " + String(LoRa.packetSnr()));
Serial.println();
}
thank you again for helping -Harvey