Mar 27, 2017 with serial.Serial ('COM3', 9600, timeout=1) as s: s.write (b'acq r') time.sleep (10) s.write (b'stp r') t1 = time.time reading = s.readall t2 = time.time print (t2 - t1) I changed sleep time from 0.25s to 10s, it always take about 2s to read all data from the buffer even the size of data varied, on both my laptop and RPi. Python -m serial.tools.listportswill print a list of available ports. It is also possible to add a regexp as first argument and the list will only include entries that matched. Here are the examples of the python api pexpect.TIMEOUT taken from open source projects. By voting up you can indicate which examples are most useful and appropriate. The following are 7 code examples for showing how to use serial.PARITYODD. These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

1. Python Readline Timeout
2. Python Serial Timeout Example Sentences
3. Python Serial Write
4. Python Serial Time Out Example Pdf
5. Python Serial Time Out Example Sentences
6. Python Serial Time Out Example Paragraph

--D. Thiebaut (talk) 13:45, 21 April 2014 (EDT)

The purpose of this tutorial is to illustrate the basic steps required to build a Python module that can be used as a PySerial replacement while developing a Python application that interfaces with an Arduino. The module presented here supports the basic PySerial functions one needs to call from a Python app to talk to an Arduino. These functions, however, either do not do anything, or return canned and predefined data.

First we look at how the real PySerial module behaves when supporting a Python program that interacts with an Arduino. We pick several examples from the PySerial documentation.

These examples of a real PySerial program are taken from http://pyserial.sourceforge.net/shortintro.html, and are reproduced below for completeness:

Example 1

Python Readline Timeout

Example 2

Example 3

Example 4

So, all we have to do is create a module called fakeSerial.py that will contain

1. a class called Serial() that can be initialized with various amount of arguments
2. a member variable of this class should be called name and return the name of a port.
3. a method called write( ) which receives a string and passes it to the fake Arduino
4. a method called read() which will read some number of bytes from the Arduino
5. a method called close() that closes the port and make all further operations with the Arduino impossible.
6. a method called isOpen() which will return True or False depending on whether the port to the fake Arduino is opened or closed.
7. a method called readline() that will return characters until a n is found.

Below is our first attempt at building this module.

Below is our test program that uses the simulator and runs the same tests we listed at the top of the page. Note that the output is the same as with a real Arduino!

The output of the program is shown below:

We have developed a module that can be used as an Arduino simulator and that will mimic how an Arduino would respond to various commands. This simulator is useful for developing Python programs that will eventually communicate with Arduino hardware. The program won't have to worry about connecting hardware to the development computer until the very last step of the development process.

With such a simulator the Python program can be quickly developed, debugged, and fine-tuned before connecting to the real thing. If more sophisticated communication with the Arduino simulator is required, then the write(), read() and readline() methods of the simulator can be modified to yield more complex behavior.

Python Serial Timeout Example Sentences

Syntax

Parameters

Remarks

Check what serial ports are available on your machine

Python Serial Write

To get a list of available serial ports use

at a command prompt or

from the Python shell.

Python Serial Time Out Example Pdf

Initialize serial device

Read from serial port

Initialize serial device

to read single byte from serial device

to read given number of bytes from the serial device

Python Serial Time Out Example Sentences

to read one line from serial device.

Python Serial Time Out Example Paragraph

to read the data from serial device while something is being written over it.