feat: device subsystem rework

[lunaix-os.git] / lunaix-os / hal / timer / hwtimer.c

diff --git a/lunaix-os/hal/timer/hwtimer.c b/lunaix-os/hal/timer/hwtimer.c
index 3a79ca1a7ec6d773521e8f8b7ff321b04526d406..1a994f7d3d163dcce4abaec3c9d5d530f3875bf1 100644 (file)
--- a/lunaix-os/hal/timer/hwtimer.c
+++ b/lunaix-os/hal/timer/hwtimer.c
@@ -8,18 +8,21 @@ struct hwtimer* current_timer;
 ticks_t
 hwtimer_base_frequency()
 {
+    assert(current_timer);
     return current_timer->base_freq;
 }
 
 ticks_t
 hwtimer_current_systicks()
 {
+    assert(current_timer);
     return current_timer->systicks();
 }
 
 ticks_t
 hwtimer_to_ticks(u32_t value, int unit)
 {
+    assert(current_timer);
     // in case system frequency is less than 1000Hz
     if (unit != TIME_MS) {
         return current_timer->running_freq * unit * value;