Turbot与python编程-实现获取kobuki按键信息

Turbot与python教程-实现获取kobuki按键信息

说明：

• 介绍如何实现通过python控制turbot实现获取kobuki按键信息

代码：

• 参考代码：github
• 实现代码：

#!/usr/bin/env python 
# Monitor the kobuki's button status

import roslib
import rospy
from kobuki_msgs.msg import ButtonEvent

class kobuki_button():

	def __init__(self):
		rospy.init_node("kobuki_button")		

		#monitor kobuki's button events
		rospy.Subscriber("/mobile_base/events/button",ButtonEvent,self.ButtonEventCallback)

		#rospy.spin() tells the program to not exit until you press ctrl + c.  If this wasn't there... it'd subscribe and then immediatly exit (therefore stop "listening" to the thread).
		rospy.spin();


	
	def ButtonEventCallback(self,data):
	    if ( data.state == ButtonEvent.RELEASED ) :
		state = "released"
	    else:
		state = "pressed"  
	    if ( data.button == ButtonEvent.Button0 ) :
		button = "B0"
	    elif ( data.button == ButtonEvent.Button1 ) :
		button = "B1"
	    else:
		button = "B2"
	    rospy.loginfo("Button %s was %s."%(button, state))
	

if __name__ == '__main__':
	try:
		kobuki_button()
	except rospy.ROSInterruptException:
		rospy.loginfo("exception")

演示：

• 主机，新终端，启动底盘

$ roslaunch turbot_bringup minimal.launch

• 从机，新终端，启动脚本

$ rosrun turbot_code kobukiButtons.py