Pierre rouaze / Mbed 2 deprecated fastpwmexample

example for using fast pwm

Dependencies:   FastPWM mbed

Example for the use of fast pwm on an stm nucleo F302R8.

main.cpp@1:1ac1f46ae264, 2016-03-01 (annotated)

Committer:
rouaze
Date:
Tue Mar 01 10:57:29 2016 +0000
Revision:
1:1ac1f46ae264
Parent:
0:e89048c4d596 
interup doesnt work

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rouaze 0:e89048c4d596 1 #include "mbed.h"
rouaze 0:e89048c4d596 2 #include "FastPWM.h"
rouaze 0:e89048c4d596 3 //setting pwm outputs
rouaze 0:e89048c4d596 4 FastPWM buck(D11,1);
rouaze 0:e89048c4d596 5 FastPWM boost(D10,1);
rouaze 0:e89048c4d596 6 //seting analog input
rouaze 0:e89048c4d596 7 AnalogIn analog_value(A0);
rouaze 0:e89048c4d596 8 //setup serial coms
rouaze 1:1ac1f46ae264 9 Serial pc(SERIAL_TX, SERIAL_RX);
rouaze 1:1ac1f46ae264 10 DigitalOut myled(LED1);
rouaze 0:e89048c4d596 11 //setup ticker
rouaze 0:e89048c4d596 12 Ticker toggle_sample_ticker;
rouaze 0:e89048c4d596 13 //setup gobal variables
rouaze 0:e89048c4d596 14 int count=0;
rouaze 0:e89048c4d596 15 int SampleSum=0;
rouaze 0:e89048c4d596 16 float sample[8];
rouaze 0:e89048c4d596 17 //setup interrupt sample function
rouaze 0:e89048c4d596 18 void sampling() {
rouaze 1:1ac1f46ae264 19 if(count<=8) {
rouaze 0:e89048c4d596 20 count=count+1;
rouaze 0:e89048c4d596 21 sample[count]=(analog_value.read());
rouaze 0:e89048c4d596 22 SampleSum=(sample[0]+sample[1]+sample[2]+sample[3]+sample[4]+sample[5]+sample[6]+sample[7]);
rouaze 0:e89048c4d596 23 }
rouaze 0:e89048c4d596 24 else
rouaze 0:e89048c4d596 25 count=0;
rouaze 0:e89048c4d596 26 }
rouaze 0:e89048c4d596 27
rouaze 0:e89048c4d596 28 //setup pwm function
rouaze 0:e89048c4d596 29 void buckpwm(int pwm){
rouaze 0:e89048c4d596 30 if (pwm <=100) {
rouaze 0:e89048c4d596 31 buck.pulsewidth_ticks( pwm );
rouaze 0:e89048c4d596 32 }
rouaze 0:e89048c4d596 33 }
rouaze 0:e89048c4d596 34
rouaze 0:e89048c4d596 35 int main() {
rouaze 1:1ac1f46ae264 36 int i = 1;
rouaze 1:1ac1f46ae264 37 pc.printf("Hello World !\n");
rouaze 0:e89048c4d596 38 //setup pwm
rouaze 0:e89048c4d596 39 uint32_t period_ticks=720;
rouaze 0:e89048c4d596 40 buck.prescaler(1);
rouaze 0:e89048c4d596 41 boost.prescaler(1);
rouaze 0:e89048c4d596 42 // define period of pwm...
rouaze 0:e89048c4d596 43 buck.period_ticks (period_ticks);
rouaze 0:e89048c4d596 44 boost.period_ticks (period_ticks);
rouaze 0:e89048c4d596 45 //define duty cycle
rouaze 0:e89048c4d596 46 buckpwm(1);
rouaze 0:e89048c4d596 47 boost.pulsewidth_us(3);
rouaze 0:e89048c4d596 48 //boostpwm(10);
rouaze 0:e89048c4d596 49 while(1) {
rouaze 1:1ac1f46ae264 50 // toggle_sample_ticker.attach(&sampling, 0.1); // will cal mycode every 1/8000 second
rouaze 1:1ac1f46ae264 51 //test serial
rouaze 1:1ac1f46ae264 52 wait(1);
rouaze 1:1ac1f46ae264 53 pc.printf("This program runs since %d seconds.\n", SampleAverage);
rouaze 1:1ac1f46ae264 54 int SampleAverage=SampleSum/9;
rouaze 0:e89048c4d596 55 }
rouaze 0:e89048c4d596 56 }