From e120e5f1224bf49a8e593953cb3e327ac0053eca Mon Sep 17 00:00:00 2001
From: Theo Arends <11044339+arendst@users.noreply.github.com>
Date: Wed, 20 Jan 2021 10:18:19 +0100
Subject: [PATCH] Fix DHT12 negative temps

Fix DHT12 negative temps (#10632)
---
 tasmota/xsns_58_dht12.ino | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tasmota/xsns_58_dht12.ino b/tasmota/xsns_58_dht12.ino
index 4bab87bb3..966794ce5 100644
--- a/tasmota/xsns_58_dht12.ino
+++ b/tasmota/xsns_58_dht12.ino
@@ -57,7 +57,7 @@ bool Dht12Read(void)
   uint8_t checksum      = Wire.read();
 
   Dht12.humidity    = ConvertHumidity( (float) humidity + (float) humidityTenth/(float) 10.0 );
-  Dht12.temperature = ConvertTemp( (float) temp + (float) tempTenth/(float) 10.0 );
+  Dht12.temperature = ConvertTemp( ((float)temp + (float)(tempTenth & 0x7F) / (float) 10.0) * (tempTenth & 0x80) ? -1.0 : 1.0 );
 
   if (isnan(Dht12.temperature) || isnan(Dht12.humidity)) { return false; }