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 6:257e2ab66d0f, committed 2014-09-10

Comitter:
s_inoue_mbed
Date:
Wed Sep 10 17:43:14 2014 +0000
Parent:
5:da586c935e88
Child:
7:50f5c8efd967
Commit message:
Reorganized initialization function

Changed in this revision

DHT11.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/DHT11.cpp	Wed Sep 10 17:35:27 2014 +0000
+++ b/DHT11.cpp	Wed Sep 10 17:43:14 2014 +0000
@@ -11,21 +11,18 @@
     io_irq.rise(this, &DHT11::pos_edge);
     io_irq.fall(this, &DHT11::neg_edge);
     io_irq.disable_irq();
-    init();
+    init();    
+    first_time = true;
 }
 
 // Destructor
 DHT11::~DHT11(void) {}
 
-// Reading the data bits from DHT11
+// Reading the data bits from the DHT11
 int DHT11::readData()
 {
     // Initialize
-    eod = false;
-    err = OK;
-    data = 0;
-    cnt = 0;
-    wdt = 0;
+    init();
 
     // Checking the measurement frequency
     if (t.read_ms() < 2000 & first_time == false) {
@@ -128,7 +125,6 @@
 void DHT11::init(void)
 {
     t_pulse_us = 0;
-    first_time = true;
     data = 0;
     chksum = 0;
     cnt = 0;