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Add some useful timer macros

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This commit is contained in:
Jim Paris 2010-09-27 17:30:02 -04:00
parent ac2cac1e1d
commit 9cd46dfd4a
1 changed files with 5 additions and 1 deletions
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6
lib/include/tmr.h
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@ -139,11 +139,15 @@ static volatile struct TMR_struct * const TMR1 = (void *) (TMR1_BASE);
static volatile struct TMR_struct * const TMR2 = (void *) (TMR2_BASE);
static volatile struct TMR_struct * const TMR3 = (void *) (TMR3_BASE);
/* Get timer number from the timer pointer. */
#define TMR_NUM(x) (((uint32_t)(x) - TMR_BASE) / TMR_OFFSET)
/* 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 TMR_ENABLE_BIT(x) (1 << TMR_NUM(x))
#define TMR0_PIN GPIO_08
#define TMR1_PIN GPIO_09
#define TMR2_PIN GPIO_10