80 lines
1.9 KiB
Python
80 lines
1.9 KiB
Python
'''
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____ _ ____ _
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/ ___| / \ | _ \ / \
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\___ \ / _ \ | |_) | / _ \
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___) / ___ \| _ < / ___ \
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|____/_/ \_\_| \_\/_/ \_\
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Script to resolve DNS (get IP from domain name) with AT+UDNSRN command
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Ex:
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/usr/bin/python3 /var/www/nebuleair_pro_4g/SARA/sara_checkDNS.py ttyAMA2 data.nebuleair.fr
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To do: need to add profile id as parameter
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'''
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import serial
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import time
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import sys
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import json
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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] # ex: ttyAMA2
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url = parameter[1] # ex: data.mobileair.fr
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#get baudrate
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def load_config(config_file):
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try:
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with open(config_file, 'r') as file:
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config_data = json.load(file)
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return config_data
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except Exception as e:
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print(f"Error loading config file: {e}")
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return {}
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# Define the config file path
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config_file = '/var/www/nebuleair_pro_4g/config.json'
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# Load the configuration data
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config = load_config(config_file)
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# Access the shared variables
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baudrate = config.get('SaraR4_baudrate', 115200)
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ser = serial.Serial(
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port=port, #USB0 or ttyS0
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baudrate=baudrate, #115200 ou 9600
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parity=serial.PARITY_NONE, #PARITY_NONE, PARITY_EVEN or PARITY_ODD
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stopbits=serial.STOPBITS_ONE,
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bytesize=serial.EIGHTBITS,
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timeout = 2
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)
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command = f'AT+UDNSRN=0,"{url}"\r'
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ser.write((command + '\r').encode('utf-8'))
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print("****")
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print("DNS check")
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try:
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# Read lines until a timeout occurs
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response_lines = []
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while True:
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line = ser.readline().decode('utf-8').strip()
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if not line:
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break # Break the loop if an empty line is encountered
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response_lines.append(line)
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# Print the response
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for line in response_lines:
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print(line)
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except serial.SerialException as e:
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print(f"Error: {e}")
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finally:
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if ser.is_open:
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ser.close()
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print("****")
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#print("Serial closed")
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