B4R Tutorial [tool] External Serial Connector

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This is a small B4J program that uses jSerial library to connect to an Arduino board.

To see it working start with this simple B4R program:
B4X:
Sub Process_Globals
   Public Serial1 As Serial
   Private astream As AsyncStreams
End Sub

Private Sub AppStart
   Serial1.Initialize(115200)
   Log("AppStart")
   astream.Initialize(Serial1.Stream, "Astream_NewData", "Astream_Error")
End Sub

Sub Astream_NewData (Buffer() As Byte)
   Log("Received: ", Buffer)
End Sub

Sub AStream_Error
   Log("error")
End Sub


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In this mode the IDE will send a message to the serial connector to close the serial port during compilation and to open it afterward.

You can modify the code to send binary data instead of strings.

Updates

- v1.20 - Uses a small console app to get the ports description.

f5CT6pMMYn.png
 

Attachments

  • B4R_Serial_Connector.zip
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Last edited:

Cableguy

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With this we can use an arduino as a USB device and comunicate with a B4j app, right?
 

Moch Firmansyah

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is like hyperterminal for direct serial communication, gateway only or virtual communication port as VSPD(virtual serial port driver)?
 

Beja

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Thanks Erel, but sorry not following.. I see only one B4J app in which it sends eg4g from one editbox and receives it in another editbox in the same B4J app (unless I am missing something)
Can we have a block diagram of the system so we can see the different components?
Thanks.
 

jarda

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What run this
External Serial Connector
on B4J 4.20

reflector - not found
and
udpListener.Initialize2 - not found
 

positrom2

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Edit: Solved:
I had copied j... library files to the B4R libraries. Unchecking them in the library manager the program compiles.
By the way, I have several j... lib files in the B4R folder. Must they all be removed?

Original post:
Error message when compiling the code from first post. I have followed the two links at the end of the first post:
B4R version: 1.00
Parsing code. (0.00s)
Compiling code. Error
Error compiling program.
Error description: Cannot cast type: {Type=Stream,Rank=0, RemoteObject=True} to: {Type=java.io.InputStream,Rank=0, RemoteObject=True}
Occurred on line: 10
astream.Initialize(Serial1.Stream, "Astream_NewData", "Astream_Error")
Word: stream
 
Last edited:

jarda

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Hi
reflector - is ok


udpListener.Initialize2 - not found (only Initialize)

see image
 

Attachments

  • Untitled-11.jpg
    Untitled-11.jpg
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mrred128

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I removed all refs to network objects and removed jNetwork. It worked fine. Was this console made for something else initially?
 
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