saramonteiro commented on a change in pull request #4543:
URL: https://github.com/apache/incubator-nuttx/pull/4543#discussion_r708456272
##########
File path: arch/xtensa/src/esp32/esp32_rt_timer.c
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@@ -631,15 +646,17 @@ uint64_t IRAM_ATTR rt_timer_get_alarm(void)
void IRAM_ATTR rt_timer_calibration(uint64_t time_us)
{
uint64_t counter;
- struct esp32_tim_dev_s *tim = s_esp32_tim_dev;
+ struct esp32_rt_priv_s *priv = &g_rt_priv;
irqstate_t flags;
- flags = enter_critical_section();
- ESP32_TIM_GETCTR(tim, &counter);
+ flags = spin_lock_irqsave(&priv->lock);
+
Review comment:
```suggestion
```
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