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Raspberry Pi and PMS5003
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| import serial | |
| import datetime | |
| from pymongo import MongoClient | |
| port = serial.Serial('/dev/ttyAMA0', baudrate=9600, timeout=2.0) | |
| client = MongoClient('172.31.150.230') | |
| def read_pm_line(_port): | |
| rv = b'' | |
| while True: | |
| ch1 = _port.read() | |
| if ch1 == b'\x42': | |
| ch2 = _port.read() | |
| if ch2 == b'\x4d': | |
| rv += ch1 + ch2 | |
| rv += _port.read(28) | |
| return rv | |
| loop = 0 | |
| rcv_list = [] | |
| while True: | |
| try: | |
| rcv = read_pm_line(port) | |
| res = {'timestamp': datetime.datetime.now(), | |
| 'apm10': rcv[4] * 256 + rcv[5], | |
| 'apm25': rcv[6] * 256 + rcv[7], | |
| 'apm100': rcv[8] * 256 + rcv[9], | |
| 'pm10': rcv[10] * 256 + rcv[11], | |
| 'pm25': rcv[12] * 256 + rcv[13], | |
| 'pm100': rcv[14] * 256 + rcv[15], | |
| 'gt03um': rcv[16] * 256 + rcv[17], | |
| 'gt05um': rcv[18] * 256 + rcv[19], | |
| 'gt10um': rcv[20] * 256 + rcv[21], | |
| 'gt25um': rcv[22] * 256 + rcv[23], | |
| 'gt50um': rcv[24] * 256 + rcv[25], | |
| 'gt100um': rcv[26] * 256 + rcv[27] | |
| } | |
| # print('===============\n' | |
| # 'PM1.0(CF=1): {}\n' | |
| # 'PM2.5(CF=1): {}\n' | |
| # 'PM10 (CF=1): {}\n' | |
| # 'PM1.0 (STD): {}\n' | |
| # 'PM2.5 (STD): {}\n' | |
| # 'PM10 (STD): {}\n' | |
| # '>0.3um : {}\n' | |
| # '>0.5um : {}\n' | |
| # '>1.0um : {}\n' | |
| # '>2.5um : {}\n' | |
| # '>5.0um : {}\n' | |
| # '>10um : {}'.format(res['apm10'], res['apm25'], res['apm100'], | |
| # res['pm10'], res['apm25'], res['pm100'], | |
| # res['gt03um'], res['gt05um'], res['gt10um'], | |
| # res['gt25um'], res['gt50um'], res['gt100um'])) | |
| rcv_list.append(res.copy()) | |
| loop += 1 | |
| if loop == 10: | |
| client.air.pm.insert_many(rcv_list) | |
| print('Logged to database. {} documents totally.'.format(len(rcv_list))) | |
| rcv_list.clear() | |
| loop = 0 | |
| except KeyboardInterrupt: | |
| break |
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