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.

Hello @melon NG , 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).

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

Accepted answer

Sander van de Velde | MVP 33,146 Reputation points MVP

2021-11-03T09:51:04.76+00:00
Hello @melon NG ,

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).
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Bryn Lewis 21 Reputation points

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 33,146 Reputation points MVP

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 291 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 291 Reputation points

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

Thanks a lot.
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