53 lines
1.3 KiB
Python
Executable File
53 lines
1.3 KiB
Python
Executable File
'''
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_ _ ____ __ __
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| \ | | _ \| \/ |
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| \| | |_) | |\/| |
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|_| \_|_| |_| |_|
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Script to get NPM values: ONLY temp and hum
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need parameter: port
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/usr/bin/python3 /var/www/moduleair_pro_4g/NPM/get_data_temp_hum.py ttyAMA5
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'''
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import serial
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import requests
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import json
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import sys
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parameter = sys.argv[1:] # Exclude the script name
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#print("Parameters received:")
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port='/dev/'+parameter[0]
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ser = serial.Serial(
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port=port,
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baudrate=115200,
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parity=serial.PARITY_EVEN,
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stopbits=serial.STOPBITS_ONE,
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bytesize=serial.EIGHTBITS,
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timeout = 1
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)
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ser.write(b'\x81\x14\x6B') # Temp and humidity command
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while True:
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try:
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byte_data_temp_hum = ser.readline()
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# Decode temperature and humidity values
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temperature = int.from_bytes(byte_data_temp_hum[3:5], byteorder='big') / 100.0
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humidity = int.from_bytes(byte_data_temp_hum[5:7], byteorder='big') / 100.0
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print(f"temp: {temperature}")
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print(f"hum: {humidity}")
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break
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except KeyboardInterrupt:
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print("User interrupt encountered. Exiting...")
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time.sleep(3)
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exit()
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except:
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# for all other kinds of error, but not specifying which one
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print("Unknown error...")
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time.sleep(3)
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exit()
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