Hi Monks,

I'm in charge with a project which main characteristic is to receive some data by serial port comunication.

The layout of the Data Block is:

|STX|STATUS1|STATUS2|DATA1|DATA2|ETX|CRC| where:

STX     = 1 byte  - binary(02h)
STATUS1 = 1 byte  - binary
STATUS2 = 1 byte  - binary
DATA1   = 5 bytes - ASCII
DATA2   = 5 bytes - ASCII
ETX     = 1 byte  - binary(03h)
CRC     = 1 byte

Sample Data Received: ÇÇ0229700000¤

The application will comunicate with the serial port by the Win32::SerialComm module.
After to receive the block I'll must do a Checksum (XOR from STX up to ETX inclusive) and compare it to CRC to verify the data integrity. 

My questions is:

How can I do it?

Thanks in Advance.

Eustaquio.