PMSA003读取源程序
PM2.5/PM1.0/PM10 感應器 - 可設定待機/正常模式
- 輸出PM2.5/PM1.0/PM10量測數值
- 與PMS-7003通用
python源码：
- import serial
- import time
- import sys
- import json
- import datetime
- import binascii
- class pmsA003():
- def __init__(self, dev):
- self.serial = serial.Serial(dev, baudrate=9600, timeout=3)
- def __exit__(self, exc_type, exc_value, traceback):
- self.serial.close()
- def setIdel(self):
- idelcmd = b'\x42\x4d\xe4\x00\x00\x01\x73'
- ary = bytearray(idelcmd)
- self.serial.write(ary)
- def setNormal(self):
- normalcmd = b'\x42\x4d\xe4\x00\x01\x01\x74'
- ary = bytearray(normalcmd)
- self.serial.write(ary)
- def vertify_data(self):
- if not self.data:
- return False
- return True
- def read_data(self):
- while True:
- b = self.serial.read(1)
- if b == b'\x42':
- data = self.serial.read(31)
- if data[0] == b'\x4d':
- self.data = bytearray(b'\x42' + data)
- if self.vertify_data():
- return self._PMdata()
- def _PMdata(self):
- d = {}
- d['time'] = datetime.datetime.now()
- d['apm25'] = self.data[6] * 256 + self.data[7]
- d['apm10'] = self.data[4] * 256 + self.data[5]
- d['apm100'] = self.data[8] * 256 + self.data[9]
- return d
- if __name__ == '__main__':
- print "starting..."
- con = pmsA003('/dev/ttyAMA0')
- d = con.read_data()
- print(d)
全部资料51hei下载地址：
pmsA003.rar
(593.06 KB, 下载次数: 22)
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