Brendan Kelly / Mbed 2 deprecated mDot_LDR_DHT22_Example

testing dht22 / ldr

Dependencies:   DHT22 mbed

Fork of mDot_AnalogIn_LDR_Example by Brendan Kelly

Diff: main.cpp

Revision:
2:55d40722ec9d
Parent:
1:ceddded7137c
Child:
3:3947bb0a2b4f
--- a/main.cpp	Fri Oct 02 16:46:53 2015 +0000
+++ b/main.cpp	Sun Aug 06 00:24:22 2017 +0000
@@ -13,10 +13,20 @@
 #include "mbed.h"
  
 int main() {
-    AnalogIn in(PB_1);
+    AnalogIn a0(PB_1);
     
     while (true) {
-        printf("analog value: 0x%04X\r\n", in.read_u16());
-        wait_ms(500);
+        //read as float (0.0-1.0, multiply by 1000)
+        float ldr1 = a0.read() * 1000;
+        wait_ms(100);
+        float ldr2 = a0.read() * 1000;
+        wait_ms(100);
+        float ldr3 = a0.read() * 1000;
+        wait_ms(100);
+        //average
+        float ldr = (ldr1 + ldr2 + ldr3) / 3;
+        //output 3 digits . 3 decimal places
+        printf("LDR: %3.3f\r\n", ldr);
+        wait(1);
     }
 }
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