Revision 1:54ad620bcc3d, committed 2020-07-31

Comitter:

ciaranom

Date:

Fri Jul 31 15:33:47 2020 +0000

Parent:

0:d3690ebbbcd6

Commit message:

Lab 2.4

Changed in this revision

--- a/main.cpp	Sat Jun 20 11:14:10 2020 +0000
+++ b/main.cpp	Fri Jul 31 15:33:47 2020 +0000
@@ -2,25 +2,26 @@
 DigitalIn fire(p14);
 PwmOut spkr(p26);
 AnalogIn pot1(p19);
+
 int main()
 {
  //set loop var
- float starti = 500.0;
-  float endi = 3000.0;
-   float stepi = 50.0;
+ float starti = 500.0; //starting value
+  float endi = 3000.0; //final value (actually 1 step beyond final value)
+   float stepi = 50.0; //step size
  
  
  
- while (1) {
- for (float i=starti; i<endi; i+=stepi) {
- spkr.period(1.0/i);
+ while (1) { //while loop
+ for (float i=starti; i<endi; i+=stepi) { //using previously set parameters
+ spkr.period(1.0/i); 
  spkr=0.5;
  wait(0.1);
  }
  spkr=0.0;
  
  
- while(pot1.read() < 0.5) {
+ while(pot1.read() < 0.5) { //While potentiometer is less than 50% of max, plays above sound loop except starting at new patameter (i/1500) instead of initially set parameter (i/500)
      starti = 1500.0;
      } // this uses the pot to control the program
  }