ZigBee Rx

#include <XBee.h>
#include <SoftwareSerial.h>

XBee xbee = XBee();
ZBRxResponse rx = ZBRxResponse();

// Xbee addresses
XBeeAddress64 addr64_pwr1 = XBeeAddress64(0x0013a200, 0x40b00caa);  // interior power panel sensors

// PWR1 data container
uint8_t payload[40] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

// union to convert float to byte string
union u_tag {
    uint8_t b[4];
    float fval;
} u;

// Connect Arduino pin 2 to Tx and 3 to Rx of the XBee
// I know this sounds backwards, but remember that output
// from the Arduino is input to the Xbee
#define ssRX 2
#define ssTX 3
SoftwareSerial nss(ssRX, ssTX);

void setup() {
  Serial.begin(9600);
  // software serial port
  nss.begin(9600);
  // now that they are started, hook the XBee into Software Serial
  xbee.setSerial(nss);

  Serial.println("starting up yo!");
}

void loop() {
    // doing the read without a timer makes it non-blocking, so
    // you can do other stuff in loop() as well.
    xbee.readPacket();
    // so the read above will set the available up to
    // work when you check it.
    if (xbee.getResponse().isAvailable()) {
        // got something

        if (xbee.getResponse().getApiId() == ZB_RX_RESPONSE) {
            xbee.getResponse().getZBRxResponse(rx);

            uint32_t addrMsb = rx.getRemoteAddress64().getMsb();
            uint32_t addrLsb = rx.getRemoteAddress64().getLsb();

            if (addrMsb == addr64_pwr1.getMsb() && addrLsb == addr64_pwr1.getLsb()) {
                // ****************** sender is pwr1 ******************
                Serial.print("{\"a\":\"");
                Serial.print(addrMsb, HEX);
                Serial.print(addrLsb, HEX);

                Serial.print("\",\"len\":\"");
                Serial.print(rx.getDataLength(), DEC);

                Serial.print("\",\"offset\":\"");
                Serial.print(rx.getDataOffset(), DEC);

                Serial.print("\",\"packetlen\":\"");
                Serial.print(rx.getPacketLength(), DEC);

                if (rx.getOption() == ZB_PACKET_ACKNOWLEDGED) Serial.print("\",\"ACK\"");
                else Serial.print("\",\"not_ack\"");

                for (int i = 18; i < 18 + 40; i++)
                    payload[i - 18] = rx.getData()[i];

                float realPower1 = getFloatFromData(0);
                Serial.print("\",\"rp1\":\"");
                Serial.print(realPower1);

                Serial.print(",data:\"");
                for (int i = 0; i < rx.getDataLength(); i++){
                    Serial.write(' ');
                    if (iscntrl(rx.getData()[i]))
                        Serial.write(' ');
                    else
                        Serial.write(rx.getData()[i]);
                    Serial.write(' ');
                }

                Serial.println("\"}");
            }
            else {
                // another RX sender shouldn't exist yet
                Serial.println("RX no match Addr64");
            }

        }

    }
    else if (xbee.getResponse().isError()) {
      // some kind of error happened, I put the stars in so
      // it could easily be found
      Serial.print("e=error code:");
      Serial.println(xbee.getResponse().getErrorCode(),DEC);
    }
    else {

    }
}

void addToPayload(float val, int pos) {
    u.fval = val;
    for (int i = pos; i < pos + 4; i++){
        payload[i] = u.b[i];
    }
}

float getFloatFromData(int pos) {
    u.fval = 0.0;
    for (int i = 0; i < 4; i++){
        u.b[i] = payload[i + pos];
    }
    return u.fval;
}