Fix delayMicroseconds() to use 64bit period

fixes: #5000
espressif · Apr 5, 2021 · 8645971 · 8645971
1 parent 5502879
commit 8645971
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/cores/esp32/esp32-hal-misc.c b/cores/esp32/esp32-hal-misc.c
@@ -160,15 +160,15 @@ void delay(uint32_t ms)
 
 void ARDUINO_ISR_ATTR delayMicroseconds(uint32_t us)
 {
-    uint32_t m = micros();
+    uint64_t m = (uint64_t)esp_timer_get_time();
     if(us){
-        uint32_t e = (m + us);
+        uint64_t e = (m + us);
         if(m > e){ //overflow
-            while(micros() > e){
+            while((uint64_t)esp_timer_get_time() > e){
                 NOP();
             }
         }
-        while(micros() < e){
+        while((uint64_t)esp_timer_get_time() < e){
             NOP();
         }
     }