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putc()

 
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boulder



Joined: 15 Mar 2008
Posts: 53

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putc()
PostPosted: Tue Sep 09, 2008 3:02 pm     Reply with quote
Hi,
I am using PIC16F886 with PCM compiler. Does putc() check transmit buffer status before transmitting data? If not, is there a function to check transmit buffer status.

Thanks.
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Tue Sep 09, 2008 3:10 pm     Reply with quote
You can easily determine this by looking at the .LST file, which is created
when you successfully compile a file. If you want the listing to display
register names (instead of register addresses) , you can set this in the
compiler options. In MPLAB you can do this by going to Project /
Build Options / List File, and then select "Symbolic Format".

Also, see this thread:
http://www.ccsinfo.com/forum/viewtopic.php?t=22649&highlight=putc+block
boulder



Joined: 15 Mar 2008
Posts: 53

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PostPosted: Tue Sep 09, 2008 3:34 pm     Reply with quote
Yes, it checks transmit buffer. Thanks.

Code:

....................       putc(data);
003B:  MOVF   data,W
003C:  BTFSS  PIR1.TXIF
003D:  GOTO   03C
003E:  MOVWF  TXREG
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