Android Question Astream_NewData

[secilcemal]

Hi,
I am working with B4a and with this library for some times, they are perfect tools for me to create a cnc marking machine.
What i can not figure out is;
For my application i send more than 1500 bytes to a micro controller.
What i want to impliment is the reading process into a for loop that sends the data to micro controller.
So after sending 500 byte it will wait the signal from microcontroller to go on.
When i add the line "ReceivedByte = BytesToString(Buffer, 0, Buffer.Length, "UTF8")" into the for loop
it gives me the error that "undeclared variable buffer is used before assigned any value".
Would you please tell me the proper way to use it.
Thanks.

 

[Erel]

You need to first send the 500 bytes and then send the next data from NewData event:

Sub Send500Bytes
   astream.Write(dataToSend)
End Sub

Sub AStream_NewData (Buffer() As Byte)
   'read buffer
   Send500Bytes
End Sub

 

[secilcemal]

Hi,
So i can't read the coming data while i am in a sub?

 

[Erel]

No. Because you cannot read the data from the main thread.