BluetoothClient: why do I receive a negative value?

[david0426981882]

can i ask a question?

this is my blocks and program

why after i click one on my app, the label will show negative number like -16

[ChrisWard]

@david0426981882

-16

That is a signed 4byte number, so have you checked the output of the device your app is connect to?

[Taifun]

Try the ReceiveText method together with the value -1

ReceiveText(numberOfBytes)

Reads a number of bytes from the input stream and converts them to text.

If numberOfBytes is negative, read until a delimiter byte value is read

Taifun
PS: for new questions please start a new thread next time...

[david0426981882]

i have tried 1byte and 4byte it all will show negative number

[david0426981882]

you mean this?

but my app will receive some weird symbol
and i will start a new thread thank you your inform

[Taifun]

@david0426981882

you mean this?

well, my suggestion was

@Taifun

together with the value -1

you also can do that...
how did you set the delimiter?
see also @ABG's standard answer to these kind of questions

Use receiving Bluetooth text to trigger sending bluetooth text

[69f059daeae84c541bed2b8cab4a3d2ce4fe9637_2_530x500] Don't do a second read from BlueTooth after the first read, just handle them one at a time as they arrive. Otherwise you lose messages. Test for 'done' in the process procedure, and close the notifier there if found. P.S. Make sure you have BlueToothClient Delimiter = 10, as in standard advice: Please see the Delimiter article in FAQ Be sure to use println() at the end of each message to send from the sending device, to signal end of…

Taifun
PS: I now moved your question into an new thread...

[david0426981882]

can i ask a question?

this is my blocks and program

why after i click one on my app, the label will show negative number like -16, -63, -1 or something like these

[david0426981882]

Thanks to your helping i have solve that problem im very aprreciate you.

[Taifun]

@david0426981882

i have solve that problem

Great
Please let us know what exactly was the solution for you
You also might want to provide a screenshot...

Taifun

[david0426981882]

sorry.... im just stupid, the problem is my Pinleg isn't setting correct
after i setting correct i can receive right number.
thank you for your helping again.

[ChrisWard]

@david0426981882

the problem is my Pinleg isn't setting correct

we have all done that