Help ..... serial port programming

Question

I want to communicate with my serial port in python. I installed pyserial and uspp for linux. However, when I run the following code:

import serial ser = serial.Serial('/dev/pts/1', 19200, timeout=1) print ser.portstr #check which port was really used ser.write("hello") #write a string ser.close() # 

it gives the following error:

 Traceback (most recent call last): File "poi.py", line 5, in ser.open() File "/usr/local/lib/python2.6/dist-packages/pyserial-2.5-py2.6.egg/serial/serialposix.py", line 276, in open raise SerialException("could not open port %s: %s" % (self._port, msg)) serial.serialutil.SerialException: could not open port /dev/tyUSB1: [Errno 2] No such file or directory: '/dev/tyUSB1' 

What should I do?

Answer 1

/dev/tyUSB1 looks like a typo. Device nodes are usually called /dev/ttyXXX

Answer 2

If you want to open a second USB serial port, you want /dev/ttyUSB1 instead of /dev/tyUSB1 .