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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