ellensohn/rmp220_middleware
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cleanup and added automatic chassis enable --> testing

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Björn Ellensohn 2023-08-18 08:03:18 +02:00
parent 7eaf3bcfe8
commit cc49ca69d3
1 changed files with 6 additions and 56 deletions
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62
rmp220_middleware/rmp220_middleware.py
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@ -31,7 +31,6 @@ class StateMachineNode(Node):
self.cmd_vel_sub = self.create_subscription(Twist, '/cmd_vel_mux', self.cmd_vel_callback, 10) self.cmd_vel_sub = self.create_subscription(Twist, '/cmd_vel_mux', self.cmd_vel_callback, 10)
self.joy_sub = self.create_subscription(Joy, '/joy', self.joy_callback, 10) self.joy_sub = self.create_subscription(Joy, '/joy', self.joy_callback, 10)
self.timer = self.create_timer(0.01, self.timer_callback) self.timer = self.create_timer(0.01, self.timer_callback)
#self.timer = self.create_timer(0.1, self.cmd_vel_callback)
# Create twist class for publishing velocities # Create twist class for publishing velocities
self.twist = Twist() self.twist = Twist()
@ -44,11 +43,6 @@ class StateMachineNode(Node):
self.get_logger().info('Service not available, waiting for chassis enable service...') self.get_logger().info('Service not available, waiting for chassis enable service...')
self.get_logger().info('Chassis enable service available.') self.get_logger().info('Chassis enable service available.')
# self.chassis_disable_client = self.create_client(RosSetChassisEnableCmd, 'set_chassis_disable')
# while not self.chassis_disable_client.wait_for_service(timeout_sec=1.0):
# self.get_logger().info('Service not available, waiting for chassis disable service...')
# self.get_logger().info('Chassis disable service available.')
def enable_chassis(self): def enable_chassis(self):
req = RosSetChassisEnableCmd.Request() req = RosSetChassisEnableCmd.Request()
req.ros_set_chassis_enable_cmd = True req.ros_set_chassis_enable_cmd = True
@ -62,10 +56,6 @@ class StateMachineNode(Node):
self.get_logger().info('Disabling chassis...') self.get_logger().info('Disabling chassis...')
def joy_callback(self, msg): def joy_callback(self, msg):
# if self.state == State.DISABLED and self.cmd_vel_sub is not None:
# self.state = State.ENABLED
# self.get_logger().info("State: ENABLED (Joystick)")
# self.enable_chassis()
# if self.state == State.DISABLED and msg.buttons[7] == 1: # Joystick button 'start' # if self.state == State.DISABLED and msg.buttons[7] == 1: # Joystick button 'start'
if msg.buttons[7] == 1: # Joystick button 'start' if msg.buttons[7] == 1: # Joystick button 'start'
self.state = State.ENABLED self.state = State.ENABLED
@ -78,35 +68,11 @@ class StateMachineNode(Node):
self.disable_chassis() self.disable_chassis()
def cmd_vel_callback(self, msg): def cmd_vel_callback(self, msg):
# if self.state == State.ENABLED and (abs(msg.linear.x) >= 0.03 or abs(msg.angular.z) >= 0.03):
# self.cmd_vel_pub.publish(msg)
# self.timeout = 20.0 # Reset timeout when receiving commands
# if msg.linear.x == 0.0 and msg.angular.z == 0.0:
# # No data received on cmd_vel_mux, publish zeros
# twist_msg = Twist()
# self.cmd_vel_pub.publish(twist_msg)
# else:
# # Forward received data to cmd_vel_out
# self.cmd_vel_pub.publish(msg)
# self.timeout = 10.0 # Reset timeout when receiving commands
# # Forward received data to cmd_vel_out
# self.cmd_vel_pub.publish(msg)
# self.timeout = 10.0 # Reset timeout when receiving commands
# if abs(msg.linear.x) > 0.03 or abs(msg.angular.z) > 0.03:
# self.latest_cmd_vel = msg
# else:
# self.latest_cmd_vel = Twist()
# This method shall only update the latest_cmd_vel attribute so it can be republished by the timer_callback with 100 HZ. Should have a look at performance though. # This method shall only update the latest_cmd_vel attribute so it can be republished by the timer_callback with 100 HZ. Should have a look at performance though.
self.latest_cmd_vel = msg self.latest_cmd_vel = msg
self.timeout = 10.0 # Reset timeout when receiving commands self.timeout = 20.0 # Reset timeout when receiving commands
# TODO: Add setting chassis state to enabled automatically upon receiving commands (with filter maybe)
def timer_callback(self): def timer_callback(self):
#self.cmd_vel_pub.publish(self.twist)
#self.cmd_vel_callback(self.cmd_vel_sub)
if self.state == State.ENABLED: if self.state == State.ENABLED:
if self.timeout <= 0: if self.timeout <= 0:
self.state = State.DISABLED self.state = State.DISABLED
@ -115,7 +81,11 @@ class StateMachineNode(Node):
else: else:
self.timeout -= 0.01 self.timeout -= 0.01
self.cmd_vel_pub.publish(self.latest_cmd_vel) self.cmd_vel_pub.publish(self.latest_cmd_vel)
if self.state == State.DISABLED: if self.state == State.DISABLED and (abs(self.latest_cmd_vel.linear) > 0.1 or abs(self.latest_cmd_vel.angular > 0.1)): # This is a hack to enable the chassis when receiving commands e.g. from Nav2
self.state = State.ENABLED
self.get_logger().info("State: ENABLED (cmd_vel)")
self.enable_chassis()
else:
self.cmd_vel_pub.publish(self.twist) self.cmd_vel_pub.publish(self.twist)
def main(args=None): def main(args=None):
@ -130,25 +100,5 @@ def main(args=None):
node.destroy_node() node.destroy_node()
rclpy.shutdown() rclpy.shutdown()
# def main(args=None):
# rclpy.init(args=args)
# node = StateMachineNode()
# # Register a signal handler for proper cleanup
# def cleanup_handler(signum, frame):
# node.disable_chassis()
# rclpy.shutdown()
# sys.exit(0)
# signal.signal(signal.SIGINT, cleanup_handler)
# atexit.register(cleanup_handler) # Ensure cleanup on normal exit as well
# try:
# rclpy.spin(node)
# except KeyboardInterrupt:
# pass
# finally:
# pass
if __name__ == '__main__': if __name__ == '__main__':
main() main()