forked from jeroennijhof/LoRaWAN
/
otaa_helium.py
103 lines (86 loc) · 2.95 KB
/
otaa_helium.py
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#!/usr/bin/env python3
import sys
from time import sleep
from SX127x.LoRa import *
from SX127x.LoRaArgumentParser import LoRaArgumentParser
from SX127x.board_config_ada import BOARD
import LoRaWAN
from LoRaWAN.MHDR import MHDR
from random import randrange
import reset_ada
import helium
import keys
BOARD.setup()
parser = LoRaArgumentParser("LoRaWAN sender")
class LoRaWANotaa(LoRa):
def __init__(self, verbose = False):
super(LoRaWANotaa, self).__init__(verbose)
def on_rx_done(self):
print("RxDone")
self.clear_irq_flags(RxDone=1)
payload = self.read_payload(nocheck=True)
print(payload)
self.set_mode(MODE.SLEEP)
self.get_all_registers()
print(self)
lorawan = LoRaWAN.new([], keys.appkey)
lorawan.read(payload)
print(lorawan.get_payload())
print(lorawan.get_mhdr().get_mversion())
if lorawan.get_mhdr().get_mtype() == MHDR.JOIN_ACCEPT:
print("Got LoRaWAN join accept. Paste these values into keys.py")
print(lorawan.valid_mic())
print("devaddr = {}".format(lorawan.get_devaddr()))
print("nwskey = {}".format(lorawan.derive_nwskey(devnonce)))
print("appskey = {}".format(lorawan.derive_appskey(devnonce)))
print("\n")
sys.exit(0)
print("Got LoRaWAN message continue listen for join accept")
def on_tx_done(self):
self.clear_irq_flags(TxDone=1)
print("TxDone")
self.set_mode(MODE.SLEEP)
self.set_dio_mapping([0,0,0,0,0,0])
self.set_invert_iq(1)
self.reset_ptr_rx()
self.set_freq(helium.DOWNFREQ)#915)
self.set_spreading_factor(7)#12)
self.set_bw(9) #500Khz
self.set_rx_crc(False)#TRUE
self.set_mode(MODE.RXCONT)
def start(self):
self.tx_counter = 1
lorawan = LoRaWAN.new(keys.appkey)
lorawan.create(MHDR.JOIN_REQUEST, {'deveui': keys.deveui, 'appeui': keys.appeui, 'devnonce': devnonce})
self.write_payload(lorawan.to_raw())
self.set_mode(MODE.TX)
sleep(10)
# lorawan.create(MHDR.UNCONF_DATA_UP, {'devaddr': devaddress, 'fcnt': 1, 'data': [0x12, 0x34] })
# self.write_payload(lorawan.to_raw())
# self.set_mode(MODE.TX)
devnonce = [randrange(256), randrange(256)]
lora = LoRaWANotaa(True)
# Setup
lora.set_mode(MODE.SLEEP)
lora.set_dio_mapping([1,0,0,0,0,0])
lora.set_freq(helium.UPFREQ)
lora.set_pa_config(pa_select=1)
lora.set_spreading_factor(7)
lora.set_pa_config(max_power=0x0F, output_power=0x0E)
lora.set_sync_word(0x34)
lora.set_rx_crc(True)
lora.get_all_registers()
print(lora)
assert(lora.get_agc_auto_on() == 1)
try:
print("Sending LoRaWAN join request\n")
lora.start()
lora.set_mode(MODE.SLEEP)
print(lora)
except KeyboardInterrupt:
sys.stdout.flush()
print("\nKeyboardInterrupt")
finally:
sys.stdout.flush()
lora.set_mode(MODE.SLEEP)
BOARD.teardown()