From d04f7689541ca5cf1fb00d73ca067c2aa651ebd6 Mon Sep 17 00:00:00 2001
From: "Dirk O. Kaar" <19971886+dok-net@users.noreply.github.com>
Date: Fri, 30 Aug 2019 03:28:42 +0200
Subject: [PATCH] Use PolledTimeout for busy loop timeout (#6371)

---
 cores/esp8266/HardwareSerial.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cores/esp8266/HardwareSerial.cpp b/cores/esp8266/HardwareSerial.cpp
index 6ec94500d..c64c13469 100644
--- a/cores/esp8266/HardwareSerial.cpp
+++ b/cores/esp8266/HardwareSerial.cpp
@@ -121,9 +121,9 @@ unsigned long HardwareSerial::testBaudrate()
 
 unsigned long HardwareSerial::detectBaudrate(time_t timeoutMillis)
 {
-    time_t startMillis = millis();
+    esp8266::polledTimeout::oneShotFastMs timeOut(timeoutMillis);
     unsigned long detectedBaudrate;
-    while ((time_t) millis() - startMillis < timeoutMillis) {
+    while (!timeOut) {
         if ((detectedBaudrate = testBaudrate())) {
           break;
         }