cf10d20db5
- Bouton Reset Hardware (GPIO 16) avec verification ATI apres redemarrage - Bandeau d'alerte rouge quand mode configuration actif (transmission desactivee) - Reset automatique de modem_config_mode a 0 au boot (SARA/reboot/start.py) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
73 lines
1.8 KiB
Python
73 lines
1.8 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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sudo /usr/bin/python3 /var/www/nebuleair_pro_4g/SARA/reboot/hardware_reboot.py
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Hardware reboot of the SARA R5 modem using GPIO 16 (GND control via transistor).
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Cuts power for 3 seconds, then verifies modem is responsive with ATI command.
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Returns JSON result for web interface.
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'''
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import RPi.GPIO as GPIO
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import serial
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import time
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import json
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import sqlite3
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SARA_GND_GPIO = 16
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# Load baudrate from config
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conn = sqlite3.connect("/var/www/nebuleair_pro_4g/sqlite/sensors.db")
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cursor = conn.cursor()
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cursor.execute("SELECT value FROM config_table WHERE key='SaraR4_baudrate'")
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row = cursor.fetchone()
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baudrate = int(row[0]) if row else 115200
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conn.close()
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result = {
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"reboot": False,
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"modem_response": None,
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"error": None
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}
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try:
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# Step 1: Cut GND (modem off)
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GPIO.setmode(GPIO.BCM)
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GPIO.setup(SARA_GND_GPIO, GPIO.OUT)
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GPIO.output(SARA_GND_GPIO, GPIO.LOW)
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time.sleep(3)
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# Step 2: Restore GND (modem on)
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GPIO.output(SARA_GND_GPIO, GPIO.HIGH)
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time.sleep(5) # wait for modem boot
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# Step 3: Check modem with ATI
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ser = serial.Serial('/dev/ttyAMA2', baudrate=baudrate, timeout=3)
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ser.reset_input_buffer()
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for attempt in range(5):
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ser.write(b'ATI\r')
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time.sleep(1)
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response = ser.read(ser.in_waiting or 1).decode('utf-8', errors='replace')
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if "OK" in response:
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result["reboot"] = True
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result["modem_response"] = response.strip()
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break
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time.sleep(2)
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else:
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result["error"] = "Modem ne repond pas apres le redemarrage"
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ser.close()
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except Exception as e:
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result["error"] = str(e)
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finally:
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GPIO.cleanup(SARA_GND_GPIO)
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print(json.dumps(result))
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