pyserial

I've just started using pyserial as I will eventually need to read/save information coming from a particular port. Using the following code I am merely printing the port used and then trying to write and then read in some text ("hello"). The port is printing fine, but the output of my string is coming out as 5. Any idea why this is? import serial import sys from time import sleep try: ser = serial.Serial('\\.\COM8', 9600,timeout=None, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, bytesize=serial.EIGHTBITS) except: sys.exit("Error connecting device") print ser.portstr x = ser.write(

I am new at programming and am trying to communicate with my vehicle with an OBD II device. Serial to USB. I've done what I want it to do but I get the command I entered to print out. How do I just get the information from the device? Heres my code. I am using Python 3.2.3 import serial import time import string import io import os import sys ser = serial.Serial("/dev/ttyUSB1") ser.baudrate = 38400 s = input('Enter AT command --> ') print ('AT command = ' + s) ser.write(bytes(s + '\r\n', encoding = 'utf-8')) ser.timeout = 1 response = ser.read(999).decode('utf-8') print(response) ser.close()

EDITED Hello programmers Community, I have some problems dealing with pyserial in Python 3.4 first I do not have serial ports so I have used "Virtual Serial Port Driver 7.2 by Eltima Software" to create virtual serial ports in pairs, which means that I can try to send and receive data from these ports, in my case I just create COM1 connected to COM2, then I installed Hercules SETUP utility by HW group to monitor these serial ports, so IN THEORY IF I SEND(write) DATA IN PYTHON I CAN SEE IT IN HERCULES AS THIS LINK SHOWS https://www.youtube.com/watch?v=DItyttmpRtY I was trying to create my own

I've been poking around with pushing data from Flask to Javascript, mainly by modifying the code found here: https://github.com/clebio/flask-d3 Now I'm trying to read data from a COM Port and pass it through Flask to Javascript. I've done some of this before using PySerial, but am not sure the right way to approach combining it into Flask. I feel comfortable implementing something where, with each request, the port is opened, reads a line, and is closed. That's not very efficient, so ideally I would be able to open the COM port once, run a readline when Flask receives a request from the client

I'm still new in python so please bear with me, so I'm trying to write a script with python2-pyserial but I keep getting error Attempting to use a port that is not open Here's the script: #!/usr/bin/python import serial, time #initialization and open the port #possible timeout values: # 1. None: wait forever, block call # 2. 0: non-blocking mode, return immediately # 3. x, x is bigger than 0, float allowed, timeout block call ser = serial.Serial() ser.port = "/dev/ttyUSB2" ser.baudrate = 115200 ser.bytesize = serial.EIGHTBITS #number of bits per bytes ser.parity = serial.PARITY_NONE #set

I am currently having a problem with the pySerial module in Python. My problem relates to connecting and disconnecting to a device. I can successfully connect to my device and communicate with it for as long as I want to, and disconnect from it whenever I desire. However, I am unable to reconnect to the device once the connection has been severed. Here is the wrapper class that my program uses to interface with the serial port: import serial, tkMessageBox class Controller: """ Wrapper class for managing the serial connection with the MS-2000. """ def __init__(self, settings): self.ser = None

I've seen many code samples using the serial port and people say they are working codes too. The thing is, when I try the code it doesn't work. import serial ser = serial.Serial( port=0, baudrate=9600 # parity=serial.PARITY_ODD, # stopbits=serial.STOPBITS_TWO, # bytesize=serial.SEVENBITS ) ser.open() ser.isOpen() print(ser.write(0xAA)) The error it gives me is : "SerialException: Port is already opened". Is it me using python3.3 the problem or is there something additional I need to instal ? Is there any other way to use COM ports with Python3.3 ? P_Rein So the moral of the story is.. the port

I want to send/receive data from my Arduino board with a Python script. I would like to do it using Python and its pySerial module which seems to fit my needs. So I installed Python and pySerial within cygwin (windows XP behind). The Python script is rather straightforward: $ cat example.py #print "testing my COM26 port using python" import serial ser = serial.Serial() ser.baudrate = 9600 ser.port = 26 ser ser.open() ser.isOpen() However at runtime I get the following error. $ python example.py Traceback (most recent call last): File "example.py", line 9, in <module> ser.open() File "/usr/lib