81 lines
2.4 KiB
Python
81 lines
2.4 KiB
Python
import time
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from machine import Pin, ADC, UART
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from pimoroni import RGBLED
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from breakout_bme68x import BreakoutBME68X, STATUS_HEATER_STABLE
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from pimoroni_i2c import PimoroniI2C
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from breakout_ltr559 import BreakoutLTR559
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from pms5003 import PMS5003
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"""
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This basic example shows how to read from all the sensors on Enviro+.
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(plus the optional particulate sensor)
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Prints results to the REPL.
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"""
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# change this to adjust temperature compensation
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TEMPERATURE_OFFSET = 3
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# set up the LED
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led = RGBLED(6, 7, 10, invert=True)
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led.set_rgb(255, 0, 0)
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# set up the Pico's I2C
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PINS_BREAKOUT_GARDEN = {"sda": 4, "scl": 5}
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i2c = PimoroniI2C(**PINS_BREAKOUT_GARDEN)
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# set up BME688 and LTR559 sensors
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bme = BreakoutBME68X(i2c, address=0x77)
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ltr = BreakoutLTR559(i2c)
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# setup analog channel for microphone
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MIC_PIN = 26
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mic = ADC(Pin(26))
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# configure the PMS5003 for Enviro+
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pms5003 = PMS5003(
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uart=UART(1, tx=Pin(8), rx=Pin(9), baudrate=9600),
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pin_enable=Pin(3),
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pin_reset=Pin(2),
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mode="active"
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)
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while True:
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# read BME688
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temperature, pressure, humidity, gas, status, _, _ = bme.read()
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heater = "Stable" if status & STATUS_HEATER_STABLE else "Unstable"
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# correct temperature and humidity using an offset
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corrected_temperature = temperature - TEMPERATURE_OFFSET
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dewpoint = temperature - ((100 - humidity) / 5)
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corrected_humidity = 100 - (5 * (corrected_temperature - dewpoint))
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# read LTR559
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ltr_reading = ltr.get_reading()
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lux = ltr_reading[BreakoutLTR559.LUX]
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prox = ltr_reading[BreakoutLTR559.PROXIMITY]
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# read mic
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mic_reading = mic.read_u16()
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# read particle sensor
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particulate_reading = pms5003.read()
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if heater == "Stable" and ltr_reading is not None:
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led.set_rgb(0, 0, 0)
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print(f"""
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Temperature = {corrected_temperature} °C
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Humidity = {corrected_humidity} %
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Pressure = {pressure/100} hPa
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Gas = {gas}
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Lux = {lux}
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Mic = {mic_reading}
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Particulates (1.0) = {particulate_reading.pm_ug_per_m3(1.0)} ug/m3
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Particulates (2.5) = {particulate_reading.pm_ug_per_m3(2.5)} ug/m3
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Particulates (10) = {particulate_reading.pm_ug_per_m3(10)} ug/m3
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""")
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else:
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# light up the LED red if there's a problem with the BME688 or LTR559 sensor readings
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led.set_rgb(255, 0, 0)
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time.sleep(1.0)
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