Louise Newberry / DHT

Fork of DHT repo with checksum fixes.

Dependents:   DHT11_USBSerial

Fork of DHT by Moises Marangoni

Files at this revision

API Documentation at this revision

Revision 2:e7b0a41eecac, committed 2017-11-12

Comitter:
geekylou
Date:
Sun Nov 12 16:28:40 2017 +0000
Parent:
1:932d451474dc
Commit message:
Fix checksum calculations.

Changed in this revision

DHT.cpp Show annotated file Show diff for this revision Revisions of this file
DHT.h Show annotated file Show diff for this revision Revisions of this file 
--- a/DHT.cpp	Sat Apr 19 18:05:38 2014 +0000
+++ b/DHT.cpp	Sun Nov 12 16:28:40 2017 +0000
@@ -91,10 +91,10 @@
     //humidity    = bits[0]; 
     //temperature = bits[2]; 
 
-    uint8_t sum = bits[0] + bits[2];  
+    uint8_t sum = bits[0] + bits[1] + bits[2] + bits[3];
 
     if(bits[4] != sum)return DHTLIB_ERROR_CHECKSUM;
-    
+       
     return DHTLIB_OK;
 }
 float DHT::ReadTemperature() {
@@ -116,7 +116,7 @@
     return 0;
 }
 
-int DHT::ReadHumidity() {
+float DHT::ReadHumidity() {
     //int v;
 
     switch (_DHTtype) {

--- a/DHT.h	Sat Apr 19 18:05:38 2014 +0000
+++ b/DHT.h	Sun Nov 12 16:28:40 2017 +0000
@@ -33,7 +33,7 @@
     ~DHT();
     uint8_t bits[5];
     int readData(void);
-    int ReadHumidity(void);
+    float ReadHumidity(void);
     float ReadTemperature(void);
     int humidity;
     float temperature;