University of Plymouth - Stages 1, 2 and 3 / Mbed OS PWM-as-DAC

Use a PWM to simulate a DAC (needs additional filter)

main.cpp@0:5d9c5cd32f43, 2017-10-10 (annotated)

Committer:
noutram
Date:
Tue Oct 10 14:38:52 2017 +0000
Revision:
0:5d9c5cd32f43
PWM as DAC

Who changed what in which revision?

UserRevisionLine numberNew contents of line
noutram 0:5d9c5cd32f43 1 #include "mbed.h"
noutram 0:5d9c5cd32f43 2
noutram 0:5d9c5cd32f43 3 DigitalOut led1(LED1);
noutram 0:5d9c5cd32f43 4 DigitalOut pin(D7);
noutram 0:5d9c5cd32f43 5 PwmOut pwm(D6);
noutram 0:5d9c5cd32f43 6
noutram 0:5d9c5cd32f43 7 // main() runs in its own thread in the OS
noutram 0:5d9c5cd32f43 8 int main() {
noutram 0:5d9c5cd32f43 9 pwm.period_us(10); // 1 second period
noutram 0:5d9c5cd32f43 10 pwm = 0.5f; // 50% duty cycle, relative to period
noutram 0:5d9c5cd32f43 11 while (true) {
noutram 0:5d9c5cd32f43 12 led1 = !led1;
noutram 0:5d9c5cd32f43 13 pin = !pin;
noutram 0:5d9c5cd32f43 14 wait(0.5);
noutram 0:5d9c5cd32f43 15 }
noutram 0:5d9c5cd32f43 16 }
noutram 0:5d9c5cd32f43 17