Diff: DHT22.cpp

Revision:

1:5b62982a760a

Parent:

0:7fd3ff04ae95

--- a/DHT22.cpp	Thu Oct 27 15:11:06 2011 +0000
+++ b/DHT22.cpp	Tue Aug 18 00:24:13 2015 +0000
@@ -1,6 +1,17 @@
 #include "DHT22.h"
-
-
+void wt(int x)
+{
+    Timer timer1;
+    timer1.start();
+    while(1)
+    {
+    if (timer1.read_ms()>=x)
+    {
+        timer1.reset();
+    break;
+    }
+    }
+}
 DHT22::DHT22(PinName pin) {
     _data_pin = pin;
 }
@@ -18,10 +29,13 @@
     int dht22_dat [5];
     DHT22.output();
     DHT22.write(0);
+    //wt(18);
     wait_ms(18);
     DHT22.write(1);
     DHT22.input();
+    //wt(40/1000);
     wait_us(40);
+   // wt(80/1000);
     wait_us(80);
     int i,j,result=0;
     for (i=0; i<5; i++) {
@@ -29,6 +43,7 @@
         for (j=0; j<8; j++) {
             while (DHT22);
             while (!DHT22);
+           // wt(50/1000);
             wait_us(50);
             int p;
             p=DHT22;