Serial Port Interface

Posted on by

Active14 days ago

Serial communication on pins TX/RX uses TTL logic levels (5V or 3.3V depending on the board). Don’t connect these pins directly to an RS232 serial port; they operate at +/- 12V and can damage your Arduino board. In computing, a serial port is a serial communication interface through which information transfers in or out one bit at a time (in contrast to a parallel port). Throughout most of the history of personal computers, data was transferred through serial ports to devices such as modems, terminals, and various peripherals.

Can someone please show me a full python sample code that uses pyserial, i have the package and am wondering how to send the AT commands and read them back!

Willi Mentzel
12.7k11 gold badges60 silver badges79 bronze badges
InterfaceGathGath
5873 gold badges11 silver badges14 bronze badges

Serial Port Interface To Microcontroller

closed as off-topic by Drew, miken32, Machavity, doelleri, CerebralFartOct 24 '16 at 17:51

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • 'Questions asking us to recommend or find a book, tool, software library, tutorial or other off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.' – Drew, miken32, Machavity, doelleri, CerebralFart
If this question can be reworded to fit the rules in the help center, please edit the question.

4 Answers

FramesterFramester
12.2k36 gold badges109 silver badges176 bronze badges

use https://pythonhosted.org/pyserial/ for more examples

Vatev
6,4101 gold badge25 silver badges35 bronze badges
bayda

Serial Port Interface Ubuntu

bayda
10.7k6 gold badges33 silver badges48 bronze badges
Serialanimuson♦
44.6k22 gold badges121 silver badges134 bronze badges
engasoengaso

Serial Port Interface Spi

I have not used pyserial but based on the API documentation at https://pyserial.readthedocs.io/en/latest/shortintro.html it seems like a very nice interface. It might be worth double-checking the specification for AT commands of the device/radio/whatever you are dealing with.

Specifically, some require some period of silence before and/or after the AT command for it to enter into command mode. I have encountered some which do not like reads of the response without some delay first.

Paul OsbornePaul Osborne

Serial Port Interface Protocol

3,2585 gold badges20 silver badges18 bronze badges

Serial Port Interface Program

Not the answer you're looking for? Browse other questions tagged pythonmodempyserial or ask your own question.