diff options
Diffstat (limited to 'libmaple/systick.c')
| -rw-r--r-- | libmaple/systick.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/libmaple/systick.c b/libmaple/systick.c index 7935cc0..b056001 100644 --- a/libmaple/systick.c +++ b/libmaple/systick.c @@ -37,7 +37,7 @@ #define SYSTICK_TICKINT BIT(1) // Interrupt on systick countdown #define SYSTICK_ENABLE BIT(0) // Turn on the counter -volatile uint32 systick_timer_millis = 0; +volatile uint32 systick_timer_millis; void systick_init(uint32 reload_val) { /* Set the reload counter to tick every 1ms */ @@ -57,14 +57,13 @@ void systick_disable() { } void systick_resume() { - /* re-enable init registers without changing relead_val */ + /* re-enable init registers without changing reload val */ __write(SYSTICK_CSR, SYSTICK_SRC_HCLK | SYSTICK_ENABLE | SYSTICK_TICKINT); } +/** SysTick interrupt handler. Bumps up the tick counter. */ void SysTickHandler(void) { systick_timer_millis++; } - - |