asked on

Working with COM1

When I receive data thru COM1 everything is OK, but the situation when I gotta receive BYTE = 00

For example when the other machine
sends:
66 44 55 00 A4 FD FF
My computer receives:
66 44 55 A4 FD FF

I am using the Win API function :
ReadFile

What's going on here?
Can you help me, please ?
It's very urgent!!!

Alexander Hristov
email : a_christ77@yahoo.com

rwilson032697

Can you post your code? It almost sounds like it is being treated as a null terminated string...

Also, which platform are you using?

Cheers,

Raymond.

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Vovbager

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Zash

ASKER

Vovbager, 10x a lot!
DCB.Flags:=3 solved my problem!

Can you tell me where I can read information about DCB.Flags, because in the help I didn't find anything about DCB.Flags

Alexander Hristov
email:a_christ77@yahoo.com

Vovbager

You can see this information in win32 SDK Help, if you haven't this help file I can send this file via e-mail.

there are informations about Flags from WIndows SDK Help, there are more informations about this flags

DWORD fOutxCtsFlow:1; // CTS output flow control
DWORD fOutxDsrFlow:1; // DSR output flow control
DWORD fDtrControl:2; // DTR flow control type
DWORD fDsrSensitivity:1; // DSR sensitivity

DWORD fTXContinueOnXoff:1; // XOFF continues Tx
DWORD fOutX: 1; // XON/XOFF out flow control
DWORD fInX: 1; // XON/XOFF in flow control
DWORD fErrorChar: 1; // enable error replacement
DWORD fNull: 1; // enable null stripping
DWORD fRtsControl:2; // RTS flow control
DWORD fAbortOnError:1; // abort reads/writes on error
DWORD fDummy2:17; // reserved