topic Re: Bit Array ABAP in Application Development and Automation Discussions

Bit Array ABAP

Former Member — Mon, 28 Oct 2019 05:45:12 GMT

Dear Experts,

I have a requirement to send bytes array to serial port, but the legacy source code is using c# like this.

static byte[] SOH = new byte[] { 0x01 }; 
static byte[] STX = new byte[] { 0x02 }; 
static byte[] ETX = new byte[] { 0x03 }; 
static byte[] FS = new byte[] { 0x1C }; 
static byte[] US = new byte[] { 0x1F }; 
static byte[] ESC = new byte[] { 0x1B }; 
static byte[] P = new byte[] { 0x50 };

        byte[] bytes = System.Text.Encoding.ASCII.GetBytes(msgtxt);
        _serialPort.Write(STX, 0, 1);
        _serialPort.Write(SOH, 0, 1);
        _serialPort.Write(P, 0, 1);
        _serialPort.Write(SOH, 0, 1);
        _serialPort.Write(bytes, 0, bytes.Length);
        _serialPort.Write(ETX, 0, 1);

        intValue = Int32.Parse(fourthargument);
        byte[] intBytes = BitConverter.GetBytes(intValue);
        _serialPort.Write(intBytes, 0, 1);

How do you translate this code into abap?
Thanks

Re: Bit Array ABAP

FredericGirod — Mon, 28 Oct 2019 06:35:39 GMT

You assume we can understand C#

Maybe if you could read it, explain line by line the objective

Re: Bit Array ABAP

Sandra_Rossi — Mon, 28 Oct 2019 06:48:02 GMT

Read the ABAP documentation, data types are explained.

Byte = type X of length 1

Bytes = type X of any fixed length or type XSTRING

Table of bytes = TABLE OF "type X of length 1"

What is your problem with that?

Re: Bit Array ABAP

Sandra_Rossi — Mon, 28 Oct 2019 06:49:51 GMT

Why don't you call the C# program from ABAP?

Re: Bit Array ABAP

Former Member — Mon, 28 Oct 2019 08:52:43 GMT

the reason the data is not sent to serialport is because it's failed when trying to open the serial port

where I get sy-subrc = 3.

but when using dot net I can send the data with no problem.

what seems to be the problem, did you ever succussfuly open a commport using abap?


 
SET PROPERTY OF O_OBJ 'commport' =  COMMPORT.

SET PROPERTY OF O_OBJ 'settings' =  SETTINGS.

SET PROPERTY OF O_OBJ 'inputlen' = 0.

SET PROPERTY OF O_OBJ 'portopen' = 1.

Re: Bit Array ABAP

Sandra_Rossi — Mon, 28 Oct 2019 10:24:47 GMT

Please use the COMMENT button for comments, questions, adding details, etc., ANSWER is only to propose a solution, dixit SAP text at the right of the answer area.

Re: Bit Array ABAP

Jelena_Perfiljeva — Mon, 28 Oct 2019 18:10:15 GMT

I'd say that sending bits/bytes to a serial port is not a common task performed in ABAP, which is a business application language. It'd be beneficial if you've explained what exactly are you trying to achieve with this. Why is this needed in SAP?

As Sandra noted, please use Comments instead of Answer, just like on StackOverflow.