Send Hex like 0x1b 0x31 to com port in delphi

Question

I need to send Hex data like a command to my serial port using Delphi.
The Hex data like "0x1b 0x31".

What the procedure can I used ?
writestring() or writebuffer() ? How to use them ?

Answer 1

If you use TComPort from ComPort Library (sourceforge), then invoke WriteStr() method:

ComPort.WriteStr(chr($1b));

If you use TApdComPort from TurboPower component, use the PutChar() method (according that command you want to send is $1b):

ApdComPort1.PutChar(char($1b);