Using getc() and putc() with Hexa data for RS232 ?

[jpvr]

Dear All,


Please, can you tell me if this is possible to send and receive data in hexa decimal format with getc() and putc() over the RS232 UART of a pic ???

I post this message because it seems that this two function deals only
with character format and I am not able to find a rapid method for
converting Hexa to ( and from ) Ascii with this two command ...

Thank you for your help,

Jean - Pierre

[Ttelmah]

That is what printf is for..

printf("%2x",val);

You can of course print the values with putc, but then you will have to call a binary to hex conversion routine first,and send the two values. The printf code, does exactly that.

Best Wishes

[jpvr]

Hello,

thank you for the answer.

So, then I can use printf() for sending the value but for receiving the
hexa data, what is the function ???

Must I use getc() with an aditionnal conversion routine ???

[Ttelmah]

Yes. There have been efficient hextobin routines published here (there is a set in the code forum). There is a simple 'gethex' routine to get (and echo back) two hex digits from getc, and convert the result to a byte, in input.c

Best Wishes

[jpvr]

Hi Ttelmah,


Thank you very much for all this precisions.

Have a nice week end,

Jean - Pierre