34 lines
832 B
Python
34 lines
832 B
Python
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#!/usr/bin/env python
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#
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# Copyright (c) 2013 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Sends a heart beat pulse to the currently online Android devices.
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This heart beat lets the devices know that they are connected to a host.
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"""
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import os
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import sys
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import time
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from pylib import android_commands
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PULSE_PERIOD = 20
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def main():
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while True:
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try:
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devices = android_commands.GetAttachedDevices()
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for device in devices:
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android_cmd = android_commands.AndroidCommands(device)
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android_cmd.RunShellCommand('touch /sdcard/host_heartbeat')
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except:
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# Keep the heatbeat running bypassing all errors.
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pass
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time.sleep(PULSE_PERIOD)
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if __name__ == '__main__':
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sys.exit(main())
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