I want to send Hex code over the serial port how can i go about doing that  

i want to send a string which looks like 02-03-64-60-28-03 in hex.

i have used characters to give output on comport but i don`t know how to put these hex values.

thanks
ajay  

____________________________
new guy

hi thhere

Tho i haven't tried this, but i think this shud work:

Mscomm1.output = HEX(02) & HEX(03) & HEX(64) ...

Assuming that the digits u mentioned are in decimal...
Pls tell me if it works, i might have a use of this thing in the future...

Regards

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lOsT...

I know this thread is a bit old but just to avoid any misunderstanding.....

Hexadecimal (Hex) is a notation, not a data type.
ie Hex is a representation of an 8 bit binary value in Base 16.

For example, suppose you've got one of those TVs that you can connect to your serial port and control it from your computer. Let's also assume that in the Manual, it states that to turn it on you have to send it the following (Hexadecimal) codes: 02 03 64 60 28 03

In other words you have to send the following binary data:

0000 0010 (02)
0000 0011 (03)
0110 0100 (64)
0110 0000 (60)
0010 1000 (28)
0000 0011 (03)

There are 2 ways you can do this, either by using the Character representation of the binary value:

Dim strCommand As String strCommand = Chr$(&H2) & Chr$(&H3) & Chr$(&H64) & Chr$(&H60) & Chr$(&H28) & Chr$(&H3) MSComm1.Output = strCommand

or you could use a Byte Array:

Dim bytCommand(5) As Byte bytCommand(0) = &H02 bytCommand(1) = &H03 bytCommand(2) = &H64 bytCommand(3) = &H60 bytCommand(4) = &H28 bytCommand(5) = &H03 MSComm1.Output = bytCommand

Note the difference between Hex() and &H.
Hex(255) will return the characters "FF" ie 2 bytes which will be:

0100 0110 0100 0110 (hex 46 46)

&H(FF) will return one byte, which will be:

1111 1111 (hex FF)

So, if you want to send Hex FF you'd use &HFF not Hex(255)


[Edited by TheGoat on 14-12-2007 at 06:10 AM GMT]