brucely.py

from network import Bluetooth
from network import LoRa
import socket

## CONSTANTS ##

# Increment this to setup more devices
VERSION = 1


## Bluetooth ##

# Initialize
bt = Bluetooth()

# Set a name for the device
bt.set_advertisement(name='Brucely{}'.format(VERSION), service_uuid=VERSION)

# Create a service
service = bt.service(uuid=b'b000000000000000', isprimary=True)

# Create a characteristic
# This is the data channel for the chat
characteristic = service.characteristic(uuid=b'c000000000000000', value='')

# Scan for devices forever
bt.start_scan(-1)


## LoRa ##

# Set mode and frequency
lora = LoRa(mode=LoRa.LORA, region=LoRa.US915)

# Create raw socket for send and receive
socket = socket.socket(socket.AF_LORA, socket.SOCK_RAW)
socket.setblocking(False)


## CALLBACKS ##

def handle_ble_connect(bt_obj):
    events = bt_obj.events()
    if events & Bluetooth.CLIENT_CONNECTED:
        print("Client connected")
    elif events & Bluetooth.CLIENT_DISCONNECTED:
        print("Client disconnected")

def send_lora_tx(message):
    print('From my LoPy to the sky (LoRa): {}'.format(message))
    socket.send(message)

def send_ble_tx(message):
    print('From my LoPy to my phone (BLE): {}'.format(message))
    characteristic.value(message)

def handle_ble_rx(char, data):
    events, value = data
    if events:
        print('From my phone to my LoPy (BLE): {}'.format(value))
        send_lora_tx(value)

def handle_lora_rx(lora):
    if lora.events():
        message = socket.recv(64)
        print('From the sky to my LoPy (LoRa): {}'.format(message))
        send_ble_tx(message)

# Register callback for BLE connection events from the phone
bt.callback(trigger=Bluetooth.CLIENT_CONNECTED | Bluetooth.CLIENT_DISCONNECTED, handler=handle_ble_connect)

# Register callback for receiving BLE messages from the phone
characteristic.callback(trigger=Bluetooth.CHAR_WRITE_EVENT, handler=handle_ble_rx)

# Register callback for receiving LoRa messages from the sky
lora.callback(trigger=(LoRa.RX_PACKET_EVENT), handler=handle_lora_rx)

# Start advertising BLE service so a phone can connect
bt.advertise(True)