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Python3 I2C Driver & Application for SPS30 PM Sensor

Project description

SPS30 PM Sensor I2C Driver for Python3

SPS30 is a Particulate Matter sensor manufactured by Sensirion. It is capable to measure 10 different value of particles. With this driver, you can use SPS30 with Python3 over I2C.

Dependencies

Only smbus2 other than Python.

Installation

pip3 install sps30

Usage

From command line;

run-sps30

From Python script;

from sps30 import SPS30
from time import sleep

sps = SPS30(1)

if sps.read_article_code() == sps.ARTICLE_CODE_ERROR:
    raise Exception("ARTICLE CODE CRC ERROR!")
else:
    print("ARTICLE CODE: " + str(sps.read_article_code()))

if sps.read_device_serial() == sps.SERIAL_NUMBER_ERROR:
    raise Exception("SERIAL NUMBER CRC ERROR!")
else:
    print("DEVICE SERIAL: " + str(sps.read_device_serial()))

sps.set_auto_cleaning_interval(seconds) # default 604800, set 0 to disable auto-cleaning

sps.device_reset() # device has to be powered-down or reset to check new auto-cleaning interval

if sps.read_auto_cleaning_interval() == sps.AUTO_CLN_INTERVAL_ERROR: # or returns the interval in seconds
    raise Exception("AUTO-CLEANING INTERVAL CRC ERROR!")
else:
    print("AUTO-CLEANING INTERVAL: " + str(sps.read_auto_cleaning_interval()))

sps.start_measurement()

while not sps.read_data_ready_flag():
    print("New Measurement is not available!")
    if sps.read_data_ready_flag() == sps.DATA_READY_FLAG_ERROR:
        raise Exception("DATA-READY FLAG CRC ERROR!")

if sps.read_measured_values() == sps.MEASURED_VALUES_ERROR:
    raise Exception("MEASURED VALUES CRC ERROR!")
else:
    print ("PM1.0 Value in µg/m3: " + str(sps.dict_values['pm1p0']))
    print ("PM2.5 Value in µg/m3: " + str(sps.dict_values['pm2p5']))
    print ("PM4.0 Value in µg/m3: " + str(sps.dict_values['pm4p0']))
    print ("PM10.0 Value in µg/m3: " + str(sps.dict_values['pm10p0']))
    print ("NC0.5 Value in 1/cm3: " + str(sps.dict_values['nc0p5']))    # NC: Number of Concentration 
    print ("NC1.0 Value in 1/cm3: " + str(sps.dict_values['nc1p0']))
    print ("NC2.5 Value in 1/cm3: " + str(sps.dict_values['nc2p5']))
    print ("NC4.0 Value in 1/cm3: " + str(sps.dict_values['nc4p0']))
    print ("NC10.0 Value in 1/cm3: " + str(sps.dict_values['nc10p0']))
    print ("Typical Particle Size in µm: " + str(sps.dict_values['typical']))	

sps.stop_measurement()

sps.start_fan_cleaning() # enables fan-cleaning manually for 10 seconds (referred by datasheet)

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

License

MIT

Project details


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