add launch/nao_wheel.launch nodes/nao_wheel.py

nao_apps/launch/nao_wheel.launch

@@ -0,0 +1,12 @@
+<launch>
+  <!--
+  	This pushes the local PYTHONPATH into the launch file, so that the NaoQI API is found.
+    You need to add the Nao's API dir to your PYTHONPATH so that the modules are found.
+  -->
+  <env name="PYTHONPATH" value="$(env PYTHONPATH)" />
+
+  <arg name="nao_ip" default="$(optenv NAO_IP 127.0.0.1)" />
+  <arg name="nao_port" default="$(optenv NAO_PORT 9559)" />
+
+  <node pkg="nao_apps" type="nao_wheel.py" name="nao_wheel" required="true" args="--pip=$(arg nao_ip) --pport=$(arg nao_port)"  />
+</launch>

nao_apps/nodes/nao_wheel.py

@@ -0,0 +1,105 @@
+#!/usr/bin/env python
+
+#
+# ROS node to control Peppers's move base
+# This code is currently compatible to NaoQI version 1.6 or newer (latest
+# tested: 1.12)
+#
+# Copyright 2014, Kei Okada
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+#    # Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#    # Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in the
+#       documentation and/or other materials provided with the distribution.
+#    # Neither the name of the University of Freiburg nor the names of its
+#       contributors may be used to endorse or promote products derived from
+#       this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+import rospy
+
+from naoqi_driver.naoqi_node import NaoqiNode
+
+from std_msgs.msg import String
+from geometry_msgs.msg import Twist
+from geometry_msgs.msg import Pose2D
+
+class NaoWheel(NaoqiNode):
+    def __init__(self):
+        NaoqiNode.__init__(self, 'nao_wheel')
+
+        self.connectNaoQi()
+
+        # last: ROS subscriptions (after all vars are initialized)
+        rospy.Subscriber("cmd_vel", Twist, self.handleCmdVel, queue_size=1)
+        rospy.Subscriber("cmd_pose", Pose2D, self.handleTargetPose, queue_size=1)
+
+        # Create ROS publisher for speech
+        self.pub = rospy.Publisher("speech", String, latch = True)
+
+        self.say("wheel online")
+
+        rospy.loginfo("nao_wheel initialized")
+
+    def connectNaoQi(self):
+        '''(re-) connect to NaoQI'''
+        rospy.loginfo("Connecting to NaoQi at %s:%d", self.pip, self.pport)
+
+        self.motionProxy = self.get_proxy("ALMotion")
+        if self.motionProxy is None:
+            exit(1)
+
+    def say(self, text):
+        self.pub.publish(text)
+
+    def handleCmdVel(self, data):
+        rospy.logdebug("Wheel cmd_vel: %f %f %f", data.linear.x, data.linear.y, data.angular.z)
+        try:
+            eps = 1e-3 # maybe 0,0,0 is a special command in motionProxy...
+            if abs(data.linear.x)<eps and abs(data.linear.y)<eps and abs(data.angular.z)<eps:
+                self.motionProxy.moveToward(0,0,0)
+            else:
+                data.linear.x = max(min(1, data.linear.x), -1)
+                data.linear.y = max(min(1, data.linear.y), -1)
+                data.angular.z = max(min(1, data.angular.z), -1)
+                rospy.loginfo("move %f, %f, %f" % (data.linear.x, data.linear.y, data.angular.z))
+                self.motionProxy.moveToward(data.linear.x, data.linear.y, data.angular.z)
+        except RuntimeError,e:
+            # We have to assume there's no NaoQI running anymore => exit!
+            rospy.logerr("Exception caught in handleCmdVel:\n%s", e)
+            rospy.signal_shutdown("No NaoQI available anymore")
+
+    def handleTargetPose(self, data, post=True):
+        """handles cmd_pose requests, move to (x,y,theta) in robot coordinate system"""
+        rospy.logdebug("Wheel target_pose: %f %f %f", data.x, data.y, data.theta)
+        try:
+            return self.motionProxy.moveTo(data.x, data.y, data.theta)
+        except RuntimeError,e:
+            rospy.logerr("Exception caught in handleTargetPose:\n%s", e)
+            return False
+
+
+
+
+if __name__ == '__main__':
+    wheel = NaoWheel()
+    rospy.loginfo("nao_wheel running...")
+    rospy.spin()
+    rospy.loginfo("nao_wheel stopping...")
+    exit(0)