Roberto Vázquez / Mbed 2 deprecated frdm_gpio_DAC

convertidor digital. analogico

Dependencies:   mbed

main.cpp

Committer:
rvazquezc
Date:
2015-06-24
Revision:
0:02e65197aa23

File content as of revision 0:02e65197aa23:

#include "mbed.h"

// The sinewave is created on this pin
AnalogOut aout(DAC0_OUT);

int main()
{
    const double pi = 3.141592653589793238462;
    const double amplitude = 0.5f;
    const double offset = 65535/2;
    double rads = 0.0;
    uint16_t sample = 0;

    while(1) {
        // sinewave output
        for (int i = 0; i < 360; i++) {
            rads = (pi * i) / 180.0f;
            sample = (uint16_t)(amplitude * (offset * (cos(rads + pi))) + offset);
            aout.write_u16(sample);
        }
    }
}