12f683 printf

oyhan · Joined: 03 Jun 2005 Posts: 21 Location: TURKEY

hi
after this code timeVar=245
I got this message on SIOW TERMINAL
like" *** timePot=255 timeVar=245 *** "
but I have to get timeVar=(255*11)=2805 why? I do not understand..

newguy · Joined: 24 Jun 2004 Posts: 1907

Trying casting timePot to an int16 first:

oyhan · Joined: 03 Jun 2005 Posts: 21 Location: TURKEY

ok thanks for other form like...
(int8 var1)=(int16 var2) / (int8 var3) is necessary or not..

newguy · Joined: 24 Jun 2004 Posts: 1907

You have to be careful with CCS and casting - it can be tricky. I've found that mixing int16's and int8's in formulae is a usually a bad idea.

Whenever I have some calcs that mix 8 & 16 bit values, I always write a test program to see if I get the results I expect to see. If not, casting is always the culprit [rather, how CCS handles casting is different from my idea how it should be handled].