add --dummy option for controller_manager.py

dynamixel_controllers/launch/controller_manager.launch

@@ -16,7 +16,8 @@
     <!-- 4. /dynamixel_controller_manager/dxl_tty2/start_controller -->
     <!-- 5. /dynamixel_controller_manager/dxl_tty2/stop_controller -->
     <!-- 6. /dynamixel_controller_manager/dxl_tty2/restart_controller -->
-    <node name="dynamixel_manager" pkg="dynamixel_controllers" type="controller_manager.py" required="true" output="screen">
+    <arg name="arg_manager" default="" />
+    <node name="dynamixel_manager" pkg="dynamixel_controllers" type="controller_manager.py" required="true" output="screen" args="$(arg arg_manager)" >
         <rosparam>
             namespace: dynamixel_controller_manager
             serial_ports:

dynamixel_controllers/nodes/controller_manager.py

@@ -46,10 +46,12 @@
 from threading import Thread, Lock
 
 import sys
+from optparse import OptionParser
 
 import rospy
 
 from dynamixel_driver.dynamixel_serial_proxy import SerialProxy
+from dynamixel_driver.dynamixel_dummy_proxy import DummyProxy
 
 from diagnostic_msgs.msg import DiagnosticArray
 from diagnostic_msgs.msg import DiagnosticStatus
@@ -263,6 +265,13 @@ def restart_controller(self, req):
 
 if __name__ == '__main__':
     try:
+        usage_msg = 'Usage: %prog [options]'
+        parser = OptionParser(usage=usage_msg)
+        parser.add_option('-d', '--dummy', default=False,
+                          help='running manager in dummy mode, which did not connect to actual haradware device')
+        (options, args) = parser.parse_args(rospy.myargv()[1:])
+        if options.dummy:
+            SerialProxy = DummyProxy
         manager = ControllerManager()
         rospy.spin()
     except rospy.ROSInterruptException: pass

dynamixel_driver/src/dynamixel_driver/dynamixel_dummy_proxy.py

@@ -0,0 +1,146 @@
+# -*- coding: utf-8 -*-
+#
+# Software License Agreement (BSD License)
+#
+# Copyright (c) 2010-2011, Antons Rebguns.
+# All rights reserved.
+#
+# 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 University of Arizona 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.
+
+
+__author__ = 'Antons Rebguns'
+__copyright__ = 'Copyright (c) 2010-2011 Antons Rebguns'
+__credits__ = 'Cody Jorgensen, Cara Slutter'
+
+__license__ = 'BSD'
+__maintainer__ = 'Antons Rebguns'
+__email__ = '[email protected]'
+
+
+from threading import Thread, Lock
+
+from dynamixel_driver.dynamixel_serial_proxy import SerialProxy
+
+import rospy
+
+class DummyDynamixelIO(object):
+    """ Provides low level IO with the Dynamixel servos through pyserial. Has the
+    ability to write instruction packets, request and read register value
+    packets, send and receive a response to a ping packet, and send a SYNC WRITE
+    multi-servo instruction packet.
+    """
+
+    def __init__(self, port, baudrate, readback_echo=False):
+        """ Constructor takes serial port and baudrate as arguments. """
+        self.serial_mutex = Lock()
+        self.port_name = port
+        self.readback_echo = readback_echo
+
+        self.goal = {}
+        self.position = {}
+        self.speed = {}
+
+    def ping(self, servo_id):
+        self.goal[servo_id] = 2048
+        self.position[servo_id] = 2048
+        self.speed[servo_id] = 0
+        return True;
+
+    def get_model_number(self, servo_id):
+        """ Reads the servo's model number (e.g. 12 for AX-12+). """
+        return 12
+
+    def get_angle_limits(self, servo_id):
+        cwLimit = 0
+        ccwLimit = 4096
+        return {'min':cwLimit, 'max':ccwLimit}
+
+    def get_voltage(self, servo_id):
+        return 12
+
+    def get_voltage_limits(self, servo_id):
+        # return the data in a dictionary
+        min_voltage = 8
+        max_voltage = 12
+        return {'min':min_voltage, 'max':max_voltage}
+
+    def get_position(self, servo_id):
+        return self.position[servo_id]
+
+    def get_speed(self, servo_id):
+        return self.speed[servo_id]
+
+    def get_current(self, servo_id):
+        return 0
+
+    def get_firmware_version(self, servo_id):
+        return None
+
+    def get_return_delay_time(self, servo_id):
+        """ Reads the servo's return delay time. """
+        return 5
+
+    def get_feedback(self, servo_id):
+        """
+        Returns the id, goal, position, error, speed, load, voltage, temperature
+        and moving values from the specified servo.
+        """
+
+        error = 0
+        if self.speed[servo_id] != 0 :
+            speed = self.speed[servo_id]
+            self.goal[servo_id] += speed
+        else:
+            speed = (self.goal[servo_id] -  self.position[servo_id])*0.1
+        self.position[servo_id] += speed
+        return { 'timestamp': rospy.Time.now().to_sec(),
+                 'id': servo_id,
+                 'goal': self.goal[servo_id],
+                 'position': self.position[servo_id],
+                 'error': error,
+                 'speed': speed}
+
+    def set_multi_speed(self, valueTuples):
+        for servo_id,val in valueTuples:
+            self.speed[servo_id] = val
+        return True
+
+    def set_multi_position(self, valueTuples):
+        for servo_id,val in valueTuples:
+            self.goal[servo_id] = val
+            self.speed[servo_id] = 0
+        return True
+
+
+class DummyProxy(SerialProxy):
+    def connect(self):
+        self.dxl_io = DummyDynamixelIO(self.port_name, self.baud_rate, self.readback_echo)
+        self._SerialProxy__find_motors()
+        self.running = True
+        if self.update_rate > 0: Thread(target=self._SerialProxy__update_motor_states).start()
+        if self.diagnostics_rate > 0: Thread(target=self._SerialProxy__publish_diagnostic_information).start()