GUI Composer - Sending data through serial port on button click

Albert Anwar

Hello,

I need to send data to a target device through a serial port whenever a button is clicked. I know that there are lots of examples where a binding is set up between the GUI and the global variables in the target device; however, I do not know what pieces of code are inside of the target device. I only know that I should send some specified string to the device to interact with it. I'd like to be able to call something like "sendData(data);" from inside of the GUI - is this possible in GUI Composer?

I was also thinking of using a custom codec to do this, but I am unsure if this is the right direction to take.

Thanks,

Albert

over 5 years ago

0 Ki over 5 years ago

TI__Guru**** 482391 points

Hi Albert,

Sorry for the delay. I have forwarded this issue to our GUI Composer expert. He is currently away but will return Tuesday so I hope to have an update for you then.

Thanks

0 Patrick Chuong over 5 years ago

TI__Genius 16650 points

HI Albert,

You can use the sendValue API from the streaming model, you do need to create a simple custom codec and not use the standard JSON codec to prevent the data from converting into a JSON object.

I have published a demo here https://dev.ti.com/gallery/info/4199/Serial_SendDataDemo/ver/1.0.0/

Regards,
Patrick

0 Albert Anwar over 5 years ago in reply to Patrick Chuong

TI__Intellectual 2146 points

Patrick,

Thanks for your help so far. If I also want to read the response from the device and store that in a global variable (not visible to the user), is there a function similar to sendValue to do that?

Thanks,

Albert

0 Patrick Chuong over 5 years ago in reply to Albert Anwar

TI__Genius 16650 points

Hi Albert,

Streaming model is a PUSH model, which means that the device needs to push the value to the host GC application. So, there is no reverse API to get the value.

You can use the custom codec decode function in the demo project to handle data coming over the COM Port and store the value in a JavaScript global object.

Patrick

Code Composer Studio™︎

Code Composer Studio forum

GUI Composer - Sending data through serial port on button click