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How to use printf without #USE RS232?

 
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Lampus



Joined: 20 Sep 2010
Posts: 3

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How to use printf without #USE RS232?
PostPosted: Mon Sep 20, 2010 5:15 am     Reply with quote
Hi, everyone...
I realized custom void putch(char c) and char getch() functions for rs232 with hardware flow control (using RTS and CTS signals).
Can I redirect printf() to work with my functions?
I already do this for sdcc, but i don't know how do this for ccs.
Thank you for your attention.
Ttelmah



Joined: 11 Mar 2010
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PostPosted: Mon Sep 20, 2010 10:05 am     Reply with quote
Printf(your_function_name,"print format string",variables);

Best Wishes
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Mon Sep 20, 2010 10:07 am     Reply with quote
Quote:
Can I redirect printf() to work with my functions?

Download the CCS compiler manual.
http://www.ccsinfo.com/downloads/ccs_c_manual.pdf
Look in the section on printf, and read about the 'fname' parameter:
Quote:
printf (fname, cstring, values...)


Also look in the Readme.txt file for vs. 4.112 of the compiler.
It offers a new additional way to do it:
Quote:

#USE RS232 now accepts CALL_PUTC=, CALL_GETC= and CALL_KBHIT= to use user defined functions for these functions.
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