Diff: main.cpp

Revision:

12:d92a5d1d869f

Parent:

11:6fdec00dbb90

--- a/main.cpp	Sun Jun 14 20:17:43 2020 +0000
+++ b/main.cpp	Sun Jun 14 21:20:03 2020 +0000
@@ -70,6 +70,7 @@
 
 
 Timer t; 
+Timer sense_t;
 
 //*****************************************************************************
 
@@ -252,21 +253,29 @@
         int high =1; 
         int low =0; 
         DigitalOut trigger (P5_2);
-        trigger = high;
+        trigger = 1;
         wait_us(10);
-        trigger = low; 
+        trigger = 0; 
         
-        DigitalIn echo (P5_1); 
-        if ( echo == high ) 
-        {
-            
-        gLED = LED_ON;
-        wait(5);
         gLED = LED_OFF;
         
-        }
+        DigitalIn echo(P5_1); 
+        
+        printf("Starting ultrasensor:");
         
-         
+        while(echo == 1) // edge signal = 1
+        {   
+            sense_t.start(); 
+            gLED = LED_ON;
+            if(echo == 0) {
+                break;
+                }
+                
+        }
+            sense_t.stop();
+            gLED = LED_OFF;
+            printf("Ultrasensor sensor duration %f seconds\n", sense_t.read()); 
+            
         //if (echo == 1) 
         //{
           //  DigitalOut gLED(LED2, LED_ON);
@@ -275,13 +284,13 @@
        // }
         
         //*************************testing timeer *******************************************
-      /*  
+        
         t.start();
         printf("Hello World!\n");
         t.stop();
         printf("The time taken was %f seconds\n", t.read());
         
-        */
+        
         
         // **********************************************************************************