Write and Read 2540 Dongle through Com-Port via C# Script in Unity

Lucius

Hello,

I have DevKit with SensorTag and Dongle 2540. I want to communicate via a C# Script with the dongle.To get some understanding I wanted to begin with the command "01091000", which should tell the dongle to return its board adress. After writing to the port I try to read with port.ReadByte(), but I am getting timeouts.

I know there are many examples I could go through, but I think it would help me more if someone could provide a short code-snippet where this (or the init) command is written on the port and reading it afterwards.

Help would be much appreciated.

over 10 years ago

0 JXS over 10 years ago

TI__Guru** 105180 points

Hello,

Hopefully someone with C# experience can jump in here. In the meantime, I would suggest using a UART virtual sniffer to dump the actual bytes going to/from the dongle. That should give you some feedback as to if the HCI commands are being formulated properly.

Best wishes

0 Lucius over 10 years ago in reply to JXS

Prodigy 40 points

Thank you, I didn't think of that thing with the sniffer. I am kind of new to that topics. For the mentioned command 01091000 the sniffer says it dumps

30 31 30 39 31 30 30 30

So it seems that just writing the hex-code as string to the port gets somehow converted. I'll do some research on that.

0 Lucius over 10 years ago in reply to Lucius

Prodigy 40 points

Again, thank you for that hint with the sniffer, I am now able to write and receive the response. If someone else behaves as stupidly as me, this seems to be the correct syntax for this:

byte[] vals = { 0x01, 0x09, 0x10, 0x00 };
port.Write(vals, 0, vals.Length);

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Write and Read 2540 Dongle through Com-Port via C# Script in Unity