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00001 #!/usr/bin/env python 00002 # Software License Agreement (BSD License) 00003 # 00004 # Copyright (c) 2010, Willow Garage, Inc. 00005 # All rights reserved. 00006 # 00007 # Redistribution and use in source and binary forms, with or without 00008 # modification, are permitted provided that the following conditions 00009 # are met: 00010 # 00011 # * Redistributions of source code must retain the above copyright 00012 # notice, this list of conditions and the following disclaimer. 00013 # * Redistributions in binary form must reproduce the above 00014 # copyright notice, this list of conditions and the following 00015 # disclaimer in the documentation and/or other materials provided 00016 # with the distribution. 00017 # * Neither the name of Willow Garage, Inc. nor the names of its 00018 # contributors may be used to endorse or promote products derived 00019 # from this software without specific prior written permission. 00020 # 00021 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00024 # FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00025 # COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00026 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00027 # BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00028 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00029 # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 00031 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00032 # POSSIBILITY OF SUCH DAMAGE. 00033 # 00034 # Revision $Id: talker.py 5263 2009-07-17 23:30:38Z sfkwc $ 00035 00036 """ 00037 This publishes wall clock to the /clock topic to test simulated time routines 00038 """ 00039 00040 import roslib; roslib.load_manifest('test_ros') 00041 00042 import time 00043 import rospy 00044 from rosgraph_msgs.msg import Clock 00045 00046 def faketime(): 00047 rospy.set_param('/use_sim_time', True) 00048 pub = rospy.Publisher('/clock', Clock) 00049 rospy.init_node('fake_time') 00050 c = Clock() 00051 while not rospy.is_shutdown(): 00052 float_secs = time.time() 00053 secs = int(float_secs) 00054 c.clock.nsecs = int((float_secs - secs) * 1000000000) 00055 c.clock.secs = secs 00056 pub.publish(c) 00057 time.sleep(0.01) 00058 00059 if __name__ == '__main__': 00060 try: 00061 faketime() 00062 except rospy.ROSInterruptException: pass 00063