dust_chk.py

"""
*******************************************
* PMS7003 데이터 수신 프로그램 import 예제
* 수정 : 2018. 08. 27
* 제작 : eleparts 부설연구소
* SW ver. 1.0.1
*******************************************

# unpack_data(buffer)
# data list

HEADER_HIGH            = 0x42
HEADER_LOW             = 0x4d
FRAME_LENGTH           = 2x13+2(data+check bytes) 
DUST_PM1_0_CF1         = PM1.0 concentration unit μ g/m3（CF=1，standard particle）
DUST_PM2_5_CF1         = PM2.5 concentration unit μ g/m3（CF=1，standard particle）
DUST_PM10_0_CF1        = PM10 concentration unit μ g/m3（CF=1，standard particle）
DUST_PM1_0_ATM         = PM1.0 concentration unit μ g/m3（under atmospheric environment）
DUST_PM2_5_ATM         = PM2.5 concentration unit μ g/m3（under atmospheric environment）
DUST_PM10_0_ATM        = PM10 concentration unit μ g/m3  (under atmospheric environment) 
DUST_AIR_0_3           = indicates the number of particles with diameter beyond 0.3 um in 0.1 L of air. 
DUST_AIR_0_5           = indicates the number of particles with diameter beyond 0.5 um in 0.1 L of air. 
DUST_AIR_1_0           = indicates the number of particles with diameter beyond 1.0 um in 0.1 L of air. 
DUST_AIR_2_5           = indicates the number of particles with diameter beyond 2.5 um in 0.1 L of air. 
DUST_AIR_5_0           = indicates the number of particles with diameter beyond 5.0 um in 0.1 L of air. 
DUST_AIR_10_0          = indicates the number of particles with diameter beyond 10 um in 0.1 L of air. 
RESERVEDF              = Data13 Reserved high 8 bits
RESERVEDB              = Data13 Reserved low 8 bits
CHECKSUM               = Checksum code

# CF=1 should be used in the factory environment
"""

import serial
from PMS7003 import PMS7003

dust = PMS7003()

# Baud Rate
Speed = 9600

# UART / USB Serial
USB0 = '/dev/ttyUSB0'
UART = '/dev/ttyAMA0'

# USE PORT
SERIAL_PORT = UART
 
#serial setting
ser = serial.Serial(SERIAL_PORT, Speed, timeout = 1)


buffer = ser.read(1024)

if(dust.protocol_chk(buffer)):
    data = dust.unpack_data(buffer)

    print ("PMS 7003 dust data")
    print ("PM 1.0 : %s" % (data[dust.DUST_PM1_0_ATM]))
    print ("PM 2.5 : %s" % (data[dust.DUST_PM2_5_ATM]))
    print ("PM 10.0 : %s" % (data[dust.DUST_PM10_0_ATM]))

else:
    print ("data read Err")

ser.close()