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Add some useful timer macros

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This commit is contained in:
maralvira 2010-11-07 14:24:36 +00:00
parent 5e00219a9c
commit d930ce0e2b
1 changed files with 6 additions and 2 deletions
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8
cpu/mc1322x/lib/include/tmr.h
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@ -30,7 +30,7 @@
* This file is part of libmc1322x: see http://mc1322x.devl.org * This file is part of libmc1322x: see http://mc1322x.devl.org
* for details. * for details.
* *
* $Id: tmr.h,v 1.7 2010/11/07 14:24:11 maralvira Exp $ * $Id: tmr.h,v 1.8 2010/11/07 14:24:36 maralvira Exp $
*/ */
#ifndef TMR_H #ifndef TMR_H
@ -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 TMR2 = (void *) (TMR2_BASE);
static volatile struct TMR_struct * const TMR3 = (void *) (TMR3_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. /* Used to compute which enable bit to set for a particular timer, e.g.
TMR0.ENBL |= TMR_ENABLE_BIT(TMR2); TMR0.ENBL |= TMR_ENABLE_BIT(TMR2);
Helpful when you're using macros to define timers 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 TMR0_PIN GPIO_08
#define TMR1_PIN GPIO_09 #define TMR1_PIN GPIO_09
#define TMR2_PIN GPIO_10 #define TMR2_PIN GPIO_10