how to send and receive extended ascii codes on serial port

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Hi i am using vc++ 6.0 MSCOMM for serial communication i have to read bytes and from serial port.
example :
88 84 10 02 (4 bytes data from port)
C6 1E 10 02 (Received Data) but i have to display 88 84 but i am getting C6 and 1E because 88 84 are the extended ASCII Codes which i am unable to read please help.
my code is:

VARIANT data;
BSTR k;
static char dbuff[4];
int dcount=0;
CString data;

if(m_mscom.GetCommEvent()==2){ // Receiving data from port
	data          = m_mscom.GetInput();
	k             = data.bstrVal;
	dbuff[dcount] = char (k[0]);
	dcount++;
	if(dcount == 4){
		dcount=0;
		data.Format ("%02X%02X%02X%02X",(unsigned char)dbuff[0],(unsigned char)dbuff[1],(unsigned char)dbuff[2],(unsigned char)dbuff[3]);
	}
}

Posted 9-Jan-11 23:47pm

shiv@nand

Updated 9-Jan-11 23:53pm

v3

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[no name] 10-Jan-11 5:51am

Added code formatting for you with the pre-tag.

Espen Harlinn 10-Jan-11 5:56am

From your question it sounds like you are getting data - it's just not what you expected. Is this right?

shiv@nand 10-Jan-11 6:02am

yes because i have to read Extended ASCII codes i dont know how to read.

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User 7429338 · Accepted Answer · 2011-01-09T23:57:00

Solution 1

You asked a similar question a few days ago, and got the suggestion[^] to not use CString and char variables; did you try that?

Posted 9-Jan-11 23:57pm

User 7429338

Comments

shiv@nand 10-Jan-11 6:00am

no i dont know how to read without char and CString please give me the example.

[no name] 10-Jan-11 6:20am

You could turn char dbuff[4] into byte dbuff[4] and then use printf to write them to screen.

Espen Harlinn · Accepted Answer · 2011-01-10T00:03:00

data.bstrVal returns a BSTR - 16-bit wide utf-16

What's this: dbuff[dcount] = char (k[0]);
I read it as: dbuff[0] = char (k[0]); you are setting one byte sized char to the 8 least significant bits of the first unicode character in the BSTR assigned to k.

or there is a lot of code missing ....

Update
TurboPower Async Professional[^] can be used with C++ builder. There are lots of examples and good docs.

Also try Thinking in C++ 2nd Edition[^] by Bruce Eckel, Free Electronic Book
Volume 1 & Volume 2

Regards
Espen Harlinn