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esp_timer: do init check in timer implementation

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This commit is contained in:
Renz Bagaporo
2020-08-18 16:15:53 +08:00
committed by KonstantinKondrashov
parent 0fa3ff8bf0
commit e70f240e12
4 changed files with 20 additions and 14 deletions
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7
components/esp_timer/src/esp_timer_impl_frc_legacy.c
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@@ -103,7 +103,7 @@ static intr_handle_t s_timer_interrupt_handle;
// Function from the upper layer to be called when the interrupt happens.
// Registered in esp_timer_impl_init.
static intr_handler_t s_alarm_handler;
static intr_handler_t s_alarm_handler = NULL;
// Time in microseconds from startup to the moment
// when timer counter was last equal to 0. This variable is updated each time
@@ -178,6 +178,9 @@ void esp_timer_impl_unlock(void)
int64_t IRAM_ATTR esp_timer_impl_get_time(void)
{
if (s_alarm_handler == NULL) {
return 0;
}
uint32_t timer_val;
uint64_t time_base;
uint32_t ticks_per_us;
@@ -209,6 +212,8 @@ int64_t IRAM_ATTR esp_timer_impl_get_time(void)
return result;
}
int64_t esp_timer_get_time(void) __attribute__((alias("esp_timer_impl_get_time")));
void IRAM_ATTR esp_timer_impl_set_alarm(uint64_t timestamp)
{
portENTER_CRITICAL_SAFE(&s_time_update_lock);