From b5df50893bbb0adea00617e3d41a2fb45866fa1c Mon Sep 17 00:00:00 2001
From: EmbeddedDevver <willem@wnpd.nl>
Date: Wed, 16 Sep 2020 12:41:29 +0200
Subject: [PATCH] Update max31855.cpp (#1273)

line 47: mem

It's valid to have mem value of zero (0) when the temperature of the IC and the k-probe equals exactly zero degrees.
---
 esphome/components/max31855/max31855.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/esphome/components/max31855/max31855.cpp b/esphome/components/max31855/max31855.cpp
index 88f9e836f9..7a0dc2427c 100644
--- a/esphome/components/max31855/max31855.cpp
+++ b/esphome/components/max31855/max31855.cpp
@@ -44,7 +44,7 @@ void MAX31855Sensor::read_data_() {
   const uint32_t mem = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3] << 0;
 
   // Verify we got data
-  if (mem != 0 && mem != 0xFFFFFFFF) {
+  if (mem != 0xFFFFFFFF) {
     this->status_clear_error();
   } else {
     ESP_LOGE(TAG, "No data received from MAX31855 (0x%08X). Check wiring!", mem);