Robert Abad / Mbed 2 deprecated Lab4_3

sinusoid wave generator with pot input

Dependencies:   mbed

main.cpp

Committer:
rabad1
Date:
2013-10-25
Revision:
0:51c3fa0f0a03

File content as of revision 0:51c3fa0f0a03:

#include "mbed.h"

#define INPUT_SCALAR        (0.01f)

AnalogIn Ain(p19);
AnalogOut Aout(p18);
float i;

int main()
{
    while(1)  {
        for (i=0; i<2; i=i+0.05) {
            Aout=0.5+0.5*sin(i*3.14159);  // Compute the sine value, + half the range
         
            // Controls the sine wave period
            // NOTE to my fellow students:
            // in order to get to pot to work as an input to control the frequency,
            // I've had to scale the setting of the pot.  However, I have not had
            // enough scope time to play with the scalar value to fully understand
            // the how the pot affects the frequency.  So I encourage you to play
            // the scalar value to get it to work within the desired frequency range
            wait(Ain*INPUT_SCALAR);
        }
    }
}