streams.serial()
wifi_driver.auto_init()
print('connecting to wifi...')
# place here your wifi configuration
wifi.link("JoeyCat", wifi.WIFI_WPA2, "joeylovesfood")
pkey, clicert = helpers.load_key_cert('private.pem.key', 'certificate.pem.crt')
thing_conf = helpers.load_thing_conf()
publish_period = 1000 #decreased from 5 secs to one sec
# create aws iot thing instance, connect to mqtt broker, set shadow update callback and start mqtt reception loop
thing = iot.Thing(thing_conf['endpoint'],
thing_conf['mqttid'],
clicert,
pkey,
thingname=thing_conf['thingname'])
print('connecting to mqtt broker...')
thing.mqtt.connect()
thing.on_shadow_request(shadow_callback)
thing.mqtt.loop()
thing.update_shadow({'publish_period': publish_period})
#while True:
def pressed():
print('publish random sample...')
thing.mqtt.publish(
"dev/sample",
json.dumps({
for _ in range(3):
try:
print("> Establishing Link...")
wifi.link(config.config['SSID'], wifi.WIFI_WPA2, config.config['PSW'])
break
except Exception as e:
print("> ooops, something wrong while linking :(")
else:
mcu.reset()
print("> linked!")
tx_mutex = threading.Lock()
endpoint, thingname, clicert, pkey = default_credentials.load()
mqtt_id = ''.join(['%02x' % byte
for byte in mcu.uid()]) # derive unique id from mcu uid
thing = iot.Thing(endpoint, mqtt_id, clicert, pkey, thingname=thingname)
print("> connecting to mqtt broker...")
thing.mqtt.connect()
print("> connected")
thing.mqtt.loop()
sensor = bme280.BME280(I2C2)
capsense.init()
capsense.on_btn(ethereum_store)
capsense.on_btn(ethereum_store, event=capsense.BTN1_RISE)
config.led_start_publish()
while True:
tx_mutex.acquire()
print("> publish temperature and humidity")
from wireless import wifi
from espressif.esp32net import esp32wifi as wifi_driver
from bosch.bme280 import bme280
from aws.iot import iot, default_credentials
wifi_driver.auto_init()
wifi.link("SSID", wifi.WIFI_WPA2, "PSW")
endpoint, mqttid, clicert, pkey = default_credentials.load()
thing = iot.Thing(endpoint, mqttid, clicert, pkey)
thing.mqtt.connect()
thing.mqtt.loop()
sensor = bme280.BME280(I2C0)
while True:
thing.mqtt.publish("sensors", {'temp': sensor.get_temp()})
sleep(1000)
# place here your wifi configuration
wifi.link("SSID", wifi.WIFI_WPA2, "PSW")
pkey, clicert = helpers.load_key_cert('private.pem.key', 'certificate.pem.crt')
thing_conf = helpers.load_thing_conf()
publish_period = 1000
# discover Greengrass core info
info = gg.discover(thing_conf['endpoint'], thing_conf['thingname'], clicert,
pkey)
# N.B. for this example to work it is required that single element connectivity and CA lists are retrieved by discover!
gg_endpoint = info.connectivity()[0]
print('discovered:', gg_endpoint)
# create aws iot thing instance and connect to discovered mqtt broker specifying retrieved CA certificate
thing = iot.Thing(gg_endpoint,
thing_conf['mqttid'],
clicert,
pkey,
thingname=thing_conf['thingname'],
cacert=info.CA())
print('connecting to mqtt broker...')
thing.mqtt.connect()
thing.mqtt.loop()
while True:
print('publish random sample...')
thing.mqtt.publish("dev/sample", json.dumps({'asample': random(0, 10)}))
sleep(publish_period)