Suspend- function for site_wifitest

server/site_system_suspend.py

+#!/usr/bin/python
+
+"""Tell system to suspend, and resume some number of seconds later.
+
+Use the RTC to generate a wakeup some number of seconds into the
+future, then go to sleep.  Note that this module is not aware of
+the actual time when the system will suspend.  Depending on other
+system activities, there may be several seconds between when this
+script runs until when the system actually goes to sleep.  In fact
+that time may be after the wakeup has been scheduled, and the
+system may never wake up!  It is up to the caller to make prudent
+decisions as to upper bound of delay before going to sleep, and to
+choose a wakeup time greater than this interval.
+"""
+
+import os, re, subprocess, sys
+import rtc, sys_power
+
+time_to_sleep = 30
+if len(sys.argv) > 1:
+    time_to_sleep = int(sys.argv[1])
+
+if len(sys.argv) > 2:
+    after_command = ' '.join(sys.argv[2:])
+else:
+    after_command = None
+
+rtc.set_wake_alarm(rtc.get_seconds() + time_to_sleep)
+sys_power.suspend_to_ram()
+
+if after_command:
+    os.system(after_command)