![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
4/4/19
main.cpp
- Committer:
- LukeMar
- Date:
- 2019-04-04
- Revision:
- 0:a859fb8b0f6b
File content as of revision 0:a859fb8b0f6b:
#include "mbed.h" #include <stdio.h> #include <stdlib.h> #include <QEI.h> DigitalOut led1(LED1); PwmOut pwm(p25); DigitalOut dir(p27); Serial pc(USBTX,USBRX); QEI turret(p17, p18, NC, 1600); Timer t; float pulses; float revs; float dc; float theta; float err = 0.0; float err_old = 0.0; float err_ancient = 0.0; float dc_old = 0.0; float dc_ancient = 0.0; float des_theta=0.0; //float t; //float t_2; int yes; /*ticker controller(){ pc.printf("Pulses is: %i\n\r", turret.getPulses()); pc.printf("State is: %i\n\r", turret.getCurrentState()); pc.printf("State is: %i\n\r", turret.getRevolutions()); }*/ int main() { float t_now; float pwm_now; pc.baud(9600); // set baud rate dir=1; pwm.period(1.0/(20*10^3)); //pwm.write(abs(dc)); //reader.attach(&reading, 0.5); while(1) { pc.printf("start?"); pc.scanf("%d",&yes); t.start(); //pwm_now = 0.5; //pwm.write(pwm_now); while( t.read() <= 20 ) { /*if (t.read() <= 5 ){ des_angle = 45; } if (t.read() <= 10 && t.read() >5 ){ des_angle = 90; } if (t.read() <= 15 && t.read()>10){ des_angle = 125; } if (t.read()<= 20 && t.read() >15){ des_angle = 180; }*/ des_theta = 45.0; pulses = turret.getPulses(); revs = -pulses / 3200.0; theta = revs*360.0; err = des_theta-theta; dc = 1.9703*dc_old - 0.9703*dc_ancient + 0.01471*err - 0.0293*err_old + 0.0146*err_ancient; err_ancient = err_old; err_old = err; dc_ancient = dc_old; dc_old = dc; t_now = t.read(); if (dc>0) { dir = 1; } else { dir = 0; } pc.printf("Error: %.3f, DC: %.3f\n", err, dc); pwm.write(abs(dc)); } wait(5); } }