Diff: main.cpp

Revision:

12:6abbf8827c8b

Parent:

11:5186cc367be0

diff -r 5186cc367be0 -r 6abbf8827c8b main.cpp
--- a/main.cpp	Thu Sep 07 00:01:45 2017 +0000
+++ b/main.cpp	Tue Oct 16 17:34:57 2018 +0000
@@ -3,6 +3,7 @@
 #include <stdio.h>
 Serial pc(USBTX,USBRX);
 DigitalOut shdn(p26);
+PwmOut speaker(p21);
 // This VL53L0X board test application performs a range measurement in polling mode
 // Use 3.3(Vout) for Vin, p28 for SDA, p27 for SCL, P26 for shdn on mbed LPC1768
 
@@ -30,10 +31,13 @@
         status = board->init_board();
     }
     //loop taking and printing distance
+    float freq = 0;
+    speaker =0.1; //volume
     while (1) {
         status = board->sensor_centre->get_distance(&distance);
         if (status == VL53L0X_ERROR_NONE) {
-            pc.printf("D=%ld mm\r\n", distance);
+            freq = distance * 1.2;
+            speaker.period(1.0/freq); // period
         }
     }
 }