Diff: IOT_A4.cpp

Revision:

0:1f0c0e4be56d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/IOT_A4.cpp	Wed Nov 02 16:30:35 2016 +0000
@@ -0,0 +1,35 @@
+/*
+ * (C) The University of Kent and Simon Cooksey 2015.
+ */
+ 
+#include "mbed.h"
+ 
+#include "dht22.h"
+ 
+Serial host(USBTX, USBRX);
+DHT22 dht22(PTB18);
+ 
+ 
+int main()
+{
+    host.baud(38400);
+    DHT22_data_t dht22_data;
+    host.printf("\r\n\r\nhello world\r\n");
+    while (true) {
+        dht22.read(&dht22_data);
+        
+        float temperature = dht22_data.temp / 10.0f;
+        float humidity = dht22_data.humidity / 10.0f;
+        
+        int check = (dht22_data.humidity/10) + (dht22_data.humidity%10) + (dht22_data.temp/10) + (dht22_data.temp%10);
+        
+        //host.lock ();
+//        host.printf("Temperature: %2.2f    Humidity: %2.2f%%\r\n", temperature, humidity);//, dht22_data.checksum, 0xff & check);
+        host.printf("Temperature: %d (%2.2f)   Humidity: %d (%2.2f)\r\n", dht22_data.temp, temperature, dht22_data.humidity, humidity);//, dht22_data.checksum, 0xff & check);
+        //host.unlock ();
+        
+//        host.printf("0x%04X\t\t0x%04X\t\t0x%02X\r\n", 0xFFFF & dht22_data.temp, 0xFFFF & dht22_data.humidity, 0xFF & dht22_data.checksum);
+        
+        wait_ms(1000);
+    }
+}
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