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Add macro to help compute TMR.ENBL values (useful when using #defined

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values to represent timers)
This commit is contained in:
Jim Paris 2010-09-25 17:15:55 -04:00
parent 1391f5f8b5
commit 9b6f648efb
1 changed files with 6 additions and 0 deletions
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6
lib/include/tmr.h
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@ -143,6 +143,12 @@ static volatile struct TMR_struct * const _TMR3 = (void *) (TMR3_BASE);
#define TMR2 (*_TMR2) #define TMR2 (*_TMR2)
#define TMR3 (*_TMR3) #define TMR3 (*_TMR3)
/* Used to compute which enable bit to set for a particular timer, e.g.
TMR0.ENBL |= TMR_ENABLE_BIT(TMR2);
Helpful when you're using macros to define timers
*/
#define TMR_ENABLE_BIT(x) ((&(x) == &(TMR0)) ? 1 : (&(x) == &(TMR1)) ? 2 : (&(x) == &(TMR2)) ? 4 : (&(x) == &(TMR3)) ? 8 : 0)
#define TMR0_PIN GPIO_08 #define TMR0_PIN GPIO_08
#define TMR1_PIN GPIO_09 #define TMR1_PIN GPIO_09
#define TMR2_PIN GPIO_10 #define TMR2_PIN GPIO_10