keypress.py

#!/usr/bin/env python
import getch
import rospy
from std_msgs.msg import String #String message
from std_msgs.msg import Int8


################################
# created by yuvaram
#yuvaramsingh94@gmail.com
################################


def keys():
    pub = rospy.Publisher('waypoint/keypress',Int8,queue_size=10) # "keypress" is the publisher name
    rospy.init_node('keypress',anonymous=True)
    rate = rospy.Rate(10) # try removing this line ans see what happens
    while not rospy.is_shutdown():
        k=ord(getch.getch()) # this is used to convert the keypress event in the keyboard or joypad , joystick to a ord value
        if (k==32): # to filter only the space key /// this line can be removed or more key can be added to this
            rospy.loginfo(str(k)) # to print on  terminal
            pub.publish(k) # to publish
        # rospy.loginfo(str(k))

        # rate.sleep()

if __name__=='__main__':
    try:
        keys()
    except rospy.ROSInterruptException:
        pass