[Time] Fix rollover

fpistm · fpistm · commit 32dc53f6e261 · 2019-03-22T11:55:16.000+01:00
Signed-off-by: Frederic.Pillon &lt;frederic.pillon@st.com&gt;
diff --git a/cores/arduino/wiring_time.h b/cores/arduino/wiring_time.h
@@ -70,7 +70,7 @@ static inline void delayMicroseconds(uint32_t us)
   while ((int32_t)dwt_getCycles() - start < cycles);
 #else
   uint32_t start = getCurrentMicros();
-  while ((start + us) > getCurrentMicros());
+  while (getCurrentMicros() - start < us);
 #endif
 }
 

Original file line number	Diff line number	Diff line change
`@@ -70,7 +70,7 @@ static inline void delayMicroseconds(uint32_t us)`
`70`	`70`	`while ((int32_t)dwt_getCycles() - start < cycles);`
`71`	`71`	`#else`
`72`	`72`	`uint32_t start = getCurrentMicros();`
`73`		`- while ((start + us) > getCurrentMicros());`
	`73`	`+ while (getCurrentMicros() - start < us);`
`74`	`74`	`#endif`
`75`	`75`	`}`
`76`	`76`