B4J Question my jserial problem

sot bel

Member
Hello

I try to read string messages from serial port but messages comes splited.

Here is the code

-------------------------------------------------------------------------
Sub Process_Globals
Private sp As Serial
Private astream As AsyncStreams
End Sub

Sub AppStart (Form1 As Form, Args() As String)

sp.Initialize("sp")

Log(sp.ListPorts)

sp.Open("COM3") '*** COM PORT ***
sp.SetParams(9600, 8, 1, 0) '*** BAUD RATE ***

astream.Initialize(sp.GetInputStream, sp.GetOutputStream, "astream")

End Sub

Sub AStream_NewData (Buffer() As Byte)

Dim LogHeader As String = DateTime.Now & " " & Buffer.Length & " :"

Dim LogBytes As String = ""
For I = 0 To Buffer.Length - 1
LogBytes = LogBytes & " " & Buffer(I)
Next


Dim LogString As String = BytesToString(Buffer, 0, Buffer.Length, "UTF8")

Log(LogString)
End Sub


------------------------------------------------------------------------
log window
-------------



Temperature for the device
1 (index 0) is: 28.12
Requesti
ng temperatures...
DONE
Temperature for the device
1 (index 0) is: 28.12
Requesti
ng temperatures...
DONE
Temperature for the device
1 (index 0) is: 28.00
Requesti
ng temperatures...
DONE
Temperature for the device
1 (index 0) is: 28.12
Requesti
ng temperatures...
DONE
Temperature for the device
1 (index 0) is: 28.19
Requesti
ng temperatures...
DONE
Temperature for the device
1 (index 0) is: 28.06
Requesti
ng temperatures...

-----------------------------------------------------------------------------------
what i expect
----------------


Dallas Temperature IC Control Library Demo
Requesting temperatures...DONE
Temperature for the device 1 (index 0) is: 28.25
Requesting temperatures...DONE
Temperature for the device 1 (index 0) is: 28.25
Requesting temperatures...DONE
Temperature for the device 1 (index 0) is: 28.25
Requesting temperatures...DONE
Temperature for the device 1 (index 0) is: 28.25
Requesting temperatures...DONE
Temperature for the device 1 (index 0) is: 28.25
Requesting temperatures...DONE
Temperature for the device 1 (index 0) is: 28.25
Requesting temperatures...DONE
Temperature for the device 1 (index 0) is: 28.06
Requesting temperatures...DONE
Temperature for the device 1 (index 0) is: 28.06
Requesting temperatures...DONE
Temperature for the device 1 (index 0) is: 28.06
Requesting temperatures...DONE
Temperature for the device 1 (index 0) is: 28.06
Requesting temperatures...DONE
Temperature for the device 1 (index 0) is: 28.19
Requesting temperatures...DONE
Temperature for the device 1 (index 0) is: 28.19
Requesting temperatures...DONE
 

agraham

Expert
Licensed User
Longtime User
This always happens with serial comms. This has been discussed several times on this forum. You just have to deal with it. Tip - if there is a known delimiter to the message use AsyncStreamsText. You might have to change the terminating character but it will deal with putting the data together.
 
Upvote 0
Top