from network import LoRa
import socket
import time
import binascii

# use the LoRaWAN stack
lora = LoRa(mode=LoRa.LORAWAN)

app_eui = binascii.unhexlify('5F4170704555495F')
app_key = binascii.unhexlify('5F4170706C69636174696F6E4B65795F')

# join by OTAA
print("Ask OTAA")
lora.join(activation=LoRa.OTAA, auth=(app_eui, app_key), timeout=0)

# wait for network to accept OTAA
for wait_time in [2,4,6,8,10]:
    if not lora.has_joined():
        time.sleep(2)
        print("Waited {}s".format(wait_time))
    else:
        break

while not lora.has_joined():
    time.sleep(1)

if lora.has_joined():
    # socket setup
    out = socket.socket(socket.AF_LORA, socket.SOCK_RAW)
    out.setsockopt(socket.SOL_LORA, socket.SO_DR, 5)

    # send your first data!
    print(out.send("Hello world!")) # log how many bytes are sent
else:
    print("Could not join by OTAA")