How can I connect serail port in linux by .net core?

Question

melon NG 296

There are two serial ports in my device, I have to get data from the A port, convert and transfer it to the B port.

I want to develop it by .net core.

In the windows system there is a port name(For example COM1/COM2). I need the port name to connect to the serial port by system.io.port.

However, I don't know how to get the port name in Linux.

How can I get it? Thank you.

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Answer 1

Sander van de Velde | MVP 36,766 MVP Volunteer Moderator

Comports in Linux are typically identified as eg "/dev/ttyS0".

Perhaps you need to elevate access rights (Use this 777 for testing only) eg.:

sudo chmod 777 /dev/ttyS0

Note: These elevated rights then need to survive a reboot. Put them in eg. /etc/rc.local (depending on the Linux flavor you use).

Bryn Lewis 21 Reputation points MVP

2021-11-03T21:24:55.433+00:00

Hi @melon NG

Building on @Sander van de Velde | MVP 's response...

Debug.WriteLine(String.Join(",", SerialPort.GetPortNames()));

Should give you a list of the available serial ports.

You don't mention the platform you're using... If it's a RaspberryPI have a look at the "raspi-config" tool.

If you need some very plain sample code showing sync & async serial port programming, have a look at the "ShieldSerial" project on one of LoRaWAN module libraries

Bryn
Sander van de Velde | MVP 36,766 Reputation points MVP Volunteer Moderator

2021-11-03T21:49:16.953+00:00

Hello @melon NG ,

Here is a GitHub project wrote in the past regarding parsing GPS information, from a serial port. My blog with background information is seen here.
melon NG 296 Reputation points

2021-11-04T01:19:19.28+00:00

Yes, I am using RaspberryPI. I found this article about raspi-config:https://www.raspberrypi.com/documentation/computers/configuration.html Is it right?
melon NG 296 Reputation points

2021-11-04T01:19:43.277+00:00

Thanks a lot.