Send Commands to Thingy trough USB-Port

[Jay.Son]

Hey There,

I have one problem more. With my .cs Script I am opening a USB Port on my Raspberry, to communicate with my Nordic Thingy 91.

I can Read what the Nordic is sending to me, but if I tried to send a command, no result came back.

The .cs line is:

string command = "AT";

_serialPort.WriteLine(command);

As result I expect "OK" from my thingy  -

my Read() is a Thread. Therefore I should not miss a Line that the Thingy is sending to me, right?

My Baud Rate is 115200 and I set RTS = false and DTR = true.

In this img you can see my results, by communicating with the Thingy. - I have tried to send AT and AT+CEREG but no responding from the device.
So does anyone know what I can do to fix it?

Best Regards

Joseph

[Jay.Son]

UPDATE:

I've tried to convert my command into a byte[] and nothing changed.
_serialPort.Write(command,0,command.Length);