From 81ae6709e4671c34bc3e522116aedd9ba3a02fc3 Mon Sep 17 00:00:00 2001
From: Eric Severance <esev@esev.com>
Date: Sun, 1 Aug 2021 01:56:05 -0700
Subject: [PATCH] Fix parity bit calculation for ESP8266SoftwareSerial (#1873)

---
 esphome/components/uart/uart_esp8266.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/esphome/components/uart/uart_esp8266.cpp b/esphome/components/uart/uart_esp8266.cpp
index 6f7d4c1f8b..c45f48644c 100644
--- a/esphome/components/uart/uart_esp8266.cpp
+++ b/esphome/components/uart/uart_esp8266.cpp
@@ -242,9 +242,9 @@ void ICACHE_RAM_ATTR HOT ESP8266SoftwareSerial::write_byte(uint8_t data) {
   bool parity_bit = false;
   bool need_parity_bit = true;
   if (this->parity_ == UART_CONFIG_PARITY_EVEN)
-    parity_bit = true;
-  else if (this->parity_ == UART_CONFIG_PARITY_ODD)
     parity_bit = false;
+  else if (this->parity_ == UART_CONFIG_PARITY_ODD)
+    parity_bit = true;
   else
     need_parity_bit = false;