I am trying to run the following node using rosrun, to send data through my serial port and I get the error:
/opt/ros/kinetic/bin/rosrun: /home/spyros/catkin_ws/src/usb_rs232/scripts/serial_connection.py: /opt/bin/python: bad interpreter: No such file or directory
/opt/ros/kinetic/bin/rosrun: line 109: /home/spyros/catkin_ws/src/usb_rs232/scripts/serial_connection.py: Success
Also, when I compile the code with `catkin_make`, my node isn't on the list of: `Built target [my_node]`
The first version of the code (outside ROS-only python script) works fine. I think the problem has to be in the modification of the code, to run it as a ROS node.
Do you have any possible solution, or a hint of what might be the problem here?
I am new to ROS.
I use Ubuntu 16.04, ROS kinetic, Python 2.7
Thanks in advance!
#!/opt/bin/python
#!/usr/bin/env python
import rospy
import serial
import time
from std_msgs.msg import String
def serial_connection():
rospy.init_node('serial_connection', anonymous = True)
rate = rospy.Rate(10)
syxnotita = 0
euros = 0
mesi_gwnia = 0
while not rospy.is_shutdown():
data = [syxnotita, euros, mesi_gwnia]
ser = serial.Serial('/dev/ttyUSB0', 9600)
print (ser.name)
time.sleep(2)
while ser.isOpen():
print ("Port Open")
for i in range(5):
print ('Hola!')
ser.write("Hola!\n")
time.sleep(1)
rate.sleep()
ser.close()
if __name__ == '__main__':
try:
serial_connection()
except rospy.ROSInterruptException:
pass
---
Edit: The output is:
ls: cannot access '/opt/bin/python': No such file or directory
I used the same interpreter (`#!/opt/bin/python`) when I run the python script (outside ROS) from my terminal. Then I added the line `#!/opt/bin/env python` following the steps of the tutorial for python subscriber node.
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