Shigenori Inoue / AM2303

A library for the use of AM2303 (a.k.a. DHT22), a temperature and humidity sensor.

Dependents:   AM2303_Hello_World

Fork of DHT11 by Shigenori Inoue

Files at this revision

API Documentation at this revision

Revision 7:50f5c8efd967, committed 2014-09-10

Comitter:
s_inoue_mbed
Date:
Wed Sep 10 17:48:35 2014 +0000
Parent:
6:257e2ab66d0f
Child:
8:160047ca45bf
Commit message:
readData() has been simplified.

Changed in this revision

DHT11.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/DHT11.cpp	Wed Sep 10 17:43:14 2014 +0000
+++ b/DHT11.cpp	Wed Sep 10 17:48:35 2014 +0000
@@ -43,8 +43,8 @@
     do {
         io = 0;
     } while (t.read_ms() < 18);
+    io = 1;
     io.input();
-    io = 1;
 
     // Waiting for the start of the response signal
     t.reset();
@@ -52,7 +52,6 @@
     do {
         if (t.read_us() > 100) {
             io.input();
-            io = 1;
             return NOT_PRESENT;
         }
     } while (io == 1);
@@ -63,7 +62,6 @@
     do {
         if (t.read_us() > 100) {
             io.input();
-            io = 1;
             return NOT_READY;
         }
     } while (io == 0);