Serial port initialisation for python 2.7 in ubuntu

0
votes

I want to read the serial data from arduino in python in ubuntu operating system. The arduino application is running fine but when I open the same port in python in my case port is '/dev/ttyACM0' is not opening. I have tried to change the permissions of the port. But still it is not working.

2
python-2.7arduinoserial-portubuntu-14.04

2 Answers

0
votes

It could be an old bug in the Linux kernel so, try to update your Ubuntu 14.04...

0
votes

If you are using a usb to serial converter, like its built in on arduino development boards, it should usually be something like /dev/ttyUSB0.

Also make sure you are in the dialout and tty group:

usermod -aG tty $USERNAME
usermod -aG dialout $USERNAME

Your program should look something like this:

import serial
ser=serial.Serial()
ser.port="/dev/ttyUSB0"
ser.baudrate=9600
ser.open()
ser.write("hello world")

Can you show us your program?