Raspberry Pi RFM69 to MQTT gateway

gateway.py

# pip install spidev RPI.GPIO
# git clone https://github.com/etrombly/RFM69.git
#
# 19 	MOSI
# 21 	MISO
# 23 	SCK
# 22 	DI00
# 24 	NSS

import time
import paho.mqtt.client as mqtt
from RFM69.RFM69 import RFM69
from RFM69.RFM69registers import *

RADIO_NODE_ID = 1
RADIO_NETWORK_ID = 100
RADIO_HIGH_POWER = True
RADIO_INT_PIN = 22
RADIO_RST_PIN = 24
RADIO_ENCRYPT_KEY = 'ABCDEFGHIJKLMNOP'

radio = RFM69(RF69_915MHZ, RADIO_NODE_ID, RADIO_NETWORK_ID, RADIO_HIGH_POWER, intPin=RADIO_INT_PIN, rstPin=RADIO_RST_PIN)
radio.setHighPower(RADIO_HIGH_POWER)
radio.encrypt(RADIO_ENCRYPT_KEY)

def on_connect(client, userdata, flags, rc):
    pass

def on_message(client, userdata, msg):
    pass

client = mqtt.Client()
client.on_connect = on_connect
client.on_message = on_message
client.connect('localhost', 1883, 60)
client.loop_start()

try:
    while True:
        radio.receiveBegin()
        while not radio.receiveDone():
            time.sleep(0.1)

        message = ''.join([chr(byte_val) for byte_val in radio.DATA])
        print(message)

        if radio.ACKRequested():
            radio.sendACK()

        client.publish('rfm69', message)
        time.sleep(0.1)
except KeyboardInterrupt:
    radio.shutdown()
    client.loop_stop()