fix: timerRead() is returning the last read value, not the actual espressif#3434 (espressif#5498)

LoriLori · web-flow · commit 94809ce38bd5 · 2021-08-23T17:19:37.000+03:00
diff --git a/cores/esp32/esp32-hal-timer.c b/cores/esp32/esp32-hal-timer.c
@@ -119,8 +119,9 @@ void ARDUINO_ISR_ATTR __timerISR(void * arg){
     }
 }
 
-uint64_t timerRead(hw_timer_t *timer){
+uint64_t inline timerRead(hw_timer_t *timer){
     timer->dev->update = 1;
+    while (timer->dev->update) {};
     uint64_t h = timer->dev->cnt_high;
     uint64_t l = timer->dev->cnt_low;
     return (h << 32) | l;

Original file line number	Diff line number	Diff line change
`@@ -119,8 +119,9 @@ void ARDUINO_ISR_ATTR __timerISR(void * arg){`
`119`	`119`	`}`
`120`	`120`	`}`
`121`	`121`
`122`		`-uint64_t timerRead(hw_timer_t *timer){`
	`122`	`+uint64_t inline timerRead(hw_timer_t *timer){`
`123`	`123`	`timer->dev->update = 1;`
	`124`	`+ while (timer->dev->update) {};`
`124`	`125`	`uint64_t h = timer->dev->cnt_high;`
`125`	`126`	`uint64_t l = timer->dev->cnt_low;`
`126`	`127`	`return (h << 32) \| l;`