From f402c89539c01510ca63f1c0ae0c6ef3da92835f Mon Sep 17 00:00:00 2001
From: hcoohb <hcoohb@gmail.com>
Date: Tue, 2 Feb 2021 00:59:27 +1000
Subject: [PATCH] fix esp8266 remote_transmitter using incorrect timings
 (#1465)

* replace delay by delayMicroseconds in delay_microseconds_accurate

* Use delay(0) to let wifi and os function run

* Linting

* Remove unneeded delayMicroseconds, keep it for low usec

* Avoid micros() overflow issue
---
 esphome/core/helpers.cpp | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/esphome/core/helpers.cpp b/esphome/core/helpers.cpp
index f0e0c65f66..3e7472d2fe 100644
--- a/esphome/core/helpers.cpp
+++ b/esphome/core/helpers.cpp
@@ -171,15 +171,17 @@ uint8_t crc8(uint8_t *data, uint8_t len) {
   }
   return crc;
 }
+
 void delay_microseconds_accurate(uint32_t usec) {
   if (usec == 0)
     return;
-
-  if (usec <= 16383UL) {
+  if (usec < 5000UL) {
     delayMicroseconds(usec);
-  } else {
-    delay(usec / 1000UL);
-    delayMicroseconds(usec % 1000UL);
+    return;
+  }
+  uint32_t start = micros();
+  while (micros() - start < usec) {
+    delay(0);
   }
 }