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Improved timer reinits

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This commit is contained in:
d0k3 2017-07-10 01:48:36 +02:00
parent e434c5aac8
commit 804e5d5921
1 changed files with 8 additions and 2 deletions
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10
source/common/timer.c
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@ -2,7 +2,13 @@
u64 timer_start( void ) { u64 timer_start( void ) {
static bool timer_init = true; static bool timer_init = true;
if (timer_init || !(*TIMER_CNT0 & TIMER_ACTIVE)) { // timer is initialized at least once (right at the beginning)
// this makes sure it is reinitialized in case of inconsistencies
if (!(*TIMER_CNT0 & *TIMER_CNT1 & *TIMER_CNT2 & *TIMER_CNT3 & TIMER_ACTIVE) ||
!(*TIMER_CNT1 & *TIMER_CNT2 & *TIMER_CNT3 & TIMER_COUNT_UP))
timer_init = true;
if (timer_init) {
// deactivate, then reset timers // deactivate, then reset timers
*TIMER_CNT0 = 0; *TIMER_CNT0 = 0;
*TIMER_CNT1 = *TIMER_CNT2 = *TIMER_CNT3 = TIMER_COUNT_UP; *TIMER_CNT1 = *TIMER_CNT2 = *TIMER_CNT3 = TIMER_COUNT_UP;
@ -12,7 +18,7 @@ u64 timer_start( void ) {
*TIMER_CNT0 = TIMER_ACTIVE; *TIMER_CNT0 = TIMER_ACTIVE;
*TIMER_CNT1 = *TIMER_CNT2 = *TIMER_CNT3 = TIMER_ACTIVE | TIMER_COUNT_UP; *TIMER_CNT1 = *TIMER_CNT2 = *TIMER_CNT3 = TIMER_ACTIVE | TIMER_COUNT_UP;
// timer initialized (no need to do this more than once) // timer initialized
timer_init = false; timer_init = false;
} }
return timer_ticks( 0 ); return timer_ticks( 0 );