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stm32f1: Prefer uint32_t over uint16_t in timer.c

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The ARM architecture handles 32bit values faster than 16bit values -
use uint32_t where possible.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2018-04-12 14:01:47 -04:00
parent bf4e851e21
commit 06a4753f73
1 changed files with 6 additions and 6 deletions
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12
src/stm32f1/timer.c
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@ -27,20 +27,20 @@ union u32_u {
uint32_t val; uint32_t val;
}; };
static inline uint16_t static inline uint32_t
timer_get(void) timer_get(void)
{ {
return LL_TIM_GetCounter(TIM2); return LL_TIM_GetCounter(TIM2);
} }
static inline void static inline void
timer_set(uint16_t next) timer_set(uint32_t next)
{ {
LL_TIM_OC_SetCompareCH1(TIM2, next); LL_TIM_OC_SetCompareCH1(TIM2, next);
} }
static inline void static inline void
timer_repeat_set(uint16_t next) timer_repeat_set(uint32_t next)
{ {
LL_TIM_OC_SetCompareCH2(TIM2, next); LL_TIM_OC_SetCompareCH2(TIM2, next);
LL_TIM_ClearFlag_CC2(TIM2); LL_TIM_ClearFlag_CC2(TIM2);
@ -89,7 +89,7 @@ DECL_INIT(timer_init);
* 32bit timer wrappers * 32bit timer wrappers
****************************************************************/ ****************************************************************/
static uint16_t timer_high; static uint32_t timer_high;
// Return the current time (in absolute clock ticks). // Return the current time (in absolute clock ticks).
uint32_t uint32_t
@ -140,7 +140,7 @@ TIM2_IRQHandler(void)
{ {
irq_disable(); irq_disable();
LL_TIM_ClearFlag_CC1(TIM2); LL_TIM_ClearFlag_CC1(TIM2);
uint16_t next; uint32_t next;
for (;;) { for (;;) {
// Run the next software timer // Run the next software timer
next = sched_timer_dispatch(); next = sched_timer_dispatch();
@ -169,7 +169,7 @@ TIM2_IRQHandler(void)
check_defer: check_defer:
// Check if there are too many repeat timers // Check if there are too many repeat timers
irq_disable(); irq_disable();
uint16_t now = timer_get(); uint32_t now = timer_get();
if ((int16_t)(next - now) < (int16_t)(-timer_from_us(1000))) if ((int16_t)(next - now) < (int16_t)(-timer_from_us(1000)))
try_shutdown("Rescheduled timer in the past"); try_shutdown("Rescheduled timer in the past");
if (sched_tasks_busy()) { if (sched_tasks_busy()) {