Sending Non-graphic Characters

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hi,

i am just beginning a new project which requires PC to Microcontroller board via rs232.

everyting is fine but i dont know how to send Non-graphic ASCII characters.

i mean SOH ACK NAK ETX.... etc. i found some of the such as LF NULL

do i have to use ascii to number functions each side of my connections?

thanks

Posted 17-Mar-12 4:52am

Adnan Merter

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OriginalGriff · Answer 1 · 2012-03-17T05:05:00

Have a look at this: http://www.asciitable.com/[^]

It is literally a case of casting the number as a character (or better an unsigned byte) and inserting it in the output stream.

C++

#define AS_SOH ((unsigned byte) 0x01)

Bytes are generally better for this as there is no chance of a Unicode to ASCII conversion going on that you don't know about.