Returning max delay value that is uint-wrap around safe.

esp8266 · Jul 19, 2023 · f05cb54 · f05cb54
1 parent 261fd96
commit f05cb54
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/cores/esp8266/Schedule.cpp b/cores/esp8266/Schedule.cpp
@@ -143,7 +143,7 @@ bool schedule_recurrent_function_us(const std::function<bool(void)>& fn,
 
 uint32_t get_scheduled_recurrent_delay_us()
 {
-    if (!rFirst) return ~static_cast<uint32_t>(0);
+    if (!rFirst) return ~static_cast<decltype(micros())>(0) >> 1;
     // handle already expired rTarget.
     const int32_t remaining = rTarget - micros();
     return (remaining > 0) ? static_cast<uint32_t>(remaining) : 0;