Created
December 27, 2020 19:55
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AirQualitySensor
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import gc | |
import network | |
import esp | |
esp.osdebug(None) | |
gc.collect() |
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essid = "yourWiFiSSID" | |
password = "yourWiFiPassword" | |
TIMEZONE = 8 | |
server = "192.168.0.10" | |
port = 19780 | |
mqttuser = "mqttlogin" | |
mqttpwd = "MQttPassWord123" | |
TOPIC_PREFIX = 'sensor0/' |
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import machine | |
import time | |
import ntptime | |
import ubinascii | |
from umqtt.simple import MQTTClient | |
import bmp280 | |
from ccs811 import CCS811 | |
from si7021 import Si7021 | |
from config import * | |
def initmqtt(): | |
client_id = ubinascii.hexlify(machine.unique_id()) | |
client = MQTTClient(client_id, server, port, mqttuser, mqttpwd) | |
client.connect() | |
print("MQTT Connected") | |
return client | |
def connect(): | |
sta_if = network.WLAN(network.STA_IF) | |
if not sta_if.isconnected(): | |
print("Connecting to {}...".format(essid)) | |
sta_if.active(True) | |
sta_if.connect(essid, password) | |
while not sta_if.isconnected(): | |
pass | |
print("Network config:", sta_if.ifconfig()) | |
connect() | |
rtc = machine.RTC() | |
try: | |
ntptime.settime() | |
except: | |
print('Error setting time') | |
time.sleep(10) | |
machine.reset() | |
try: | |
client = initmqtt() | |
except: | |
print('Error initializing MQTT') | |
time.sleep(10) | |
machine.reset() | |
sec = time.time() + TIMEZONE * 3600 | |
localtime = time.localtime(sec) | |
i2c = machine.I2C(scl=machine.Pin(5), sda=machine.Pin(4), freq=400000) | |
data = {} | |
ccs = CCS811(i2c=i2c, addr=0x5a) | |
si = Si7021(i2c, address=0x40) | |
bmp = bmp280.BMP280(i2c, addr=0x76) | |
bmp.power_mode = bmp280.BMP280_POWER_NORMAL | |
bmp.temp_os = bmp280.BMP280_TEMP_OS_8 | |
bmp.press_os = bmp280.BMP280_PRES_OS_16 | |
bmp.standby = bmp280.BMP280_STANDBY_500 | |
bmp.iir = bmp280.BMP280_IIR_FILTER_16 | |
time.sleep(1) | |
ccs.data_ready() | |
data['eCO2'] = str(ccs.eCO2) | |
data['tVOC'] = str(ccs.tVOC) | |
data['t0'] = str(round(si.temperature, 2)) | |
data['h0'] = str(round(si.relative_humidity, 2)) | |
data['t1'] = str(bmp.temperature) | |
data['p0'] = str(round(bmp.pressure / 133.32, 2)) | |
for val in data: | |
print(TOPIC_PREFIX + val, data[val]) | |
try: | |
client.publish(TOPIC_PREFIX + val, data[val], retain=True) | |
except: | |
machine.reset() | |
time.sleep(1) | |
rtc.irq(trigger=rtc.ALARM0, wake=machine.DEEPSLEEP) | |
rtc.alarm(rtc.ALARM0, time.ticks_ms() + 300*1000) | |
print('Entering deepsleep') | |
machine.deepsleep() |
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