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assigning a variable to port
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on Jan 30, 2007
on Jan 31, 2007 by CrasyCat
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how do you assign a switch to port, because I wrote the following code line
bit switch = P1^3 which is supposed to assign a variable switch to bit 3 of port1 but it gives me an error message on this line when I try to compile
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Jan 31, 2007 11:45 AM
- Which CPU are you targeting (HC08, HC12, Coldfire, ..)
- Which version of CodeWarrior are you using?
To retrieve that info:
- Start CodeWarrior
- Select Help -> About Freescale CodeWarrior
- Click on "Install Products"
- CodeWarrior version used is displayed on top in the Installed Products dialog.
In any case ANSI standard does not define P1^3 as valid notation to access bit number 3 in a variable / register).
Please refer to your favorite ANSI C programming manual and look at how bitfields are managed.
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