Diff: main.cpp

Revision:

0:3cef86fc978f

Child:

1:aa9eabdefc12

diff -r 000000000000 -r 3cef86fc978f main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Feb 15 22:22:20 2022 +0000
@@ -0,0 +1,78 @@
+                                                     
+ #include "mbed.h"
+ #include "BH1750.h"
+ 
+ // I2C Communication
+  BH1750      lum(P0_30,P0_7);    // BH1750 SDA, SCL
+  Serial pc(USBTX, USBRX); // tx, rx
+  
+  DigitalOut led(LED2);
+  int tickerCntr1 = 0;
+  Ticker flipLed;
+  float dutyCycle=1.0f;
+
+  
+DigitalOut BH1750_EN0(P0_13);
+float lum0 = 0;
+//DigitalOut BH1750_EN1(P0_14);
+//float lum1 = 0;
+
+  
+// // If you connected I2C line not only this device but also other devices,
+// //     you need to declare following method.
+//  I2C         i2c(P0_7,P0_30);    // SDA, SCL
+//  BH1750      lum(i2c);         // BH1750 SDA, SCL (Data available every 120mSec)
+
+void flip(){
+//    if(tickerCntr1 %3000 == 0)
+//        dutyCycle -= 0.01;
+//        
+//    if(dutyCycle<= 0)
+//        dutyCycle = 1;
+    if(dutyCycle<= 0)
+        dutyCycle = 0;
+    else if(dutyCycle >= 1)
+        dutyCycle = 1;
+            
+    if(100*dutyCycle >= tickerCntr1%100){
+        led = 1;
+    }
+    else{
+        led = 0;
+    }
+    tickerCntr1++;
+    
+    if(tickerCntr1 ==100001 )
+        tickerCntr1 = 0;
+     
+ }
+ 
+void measureBH1750_0(){
+     BH1750_EN0 = 0;
+     BH1750_EN1 = 1;
+     //wait(0.005);
+     return lum.lux();
+ }
+ 
+ float measureBH1750_1(){
+     BH1750_EN0 = 1;
+     BH1750_EN1 = 0;
+    // wait(0.005);
+     return lum.lux();
+ } 
+ 
+ 
+ int main() {;
+   int reading_num = 0;
+
+
+  flipLed.attach_us(&flip, 50.0f);
+   while(true){
+//      lum1 = measureBH1750_1();
+//      lum0 = measureBH1750_0();
+//      pc.printf("Illuminance 1: %+7.2f [Lux] : Illuminance 2: %+7.2f [Lux] : %i\r\n", lum0, lum1, reading_num++);
+
+      wait(0.5);
+   }
+   
+ }
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