servom
Dependents: servomotore progetto8 progetto9 progetto10 ... more
Diff: SG90.cpp
- Revision:
- 1:de53826667ce
- Parent:
- 0:a62b163b1dbb
--- a/SG90.cpp Sat Apr 05 07:56:43 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,114 +0,0 @@ -#include "mbed.h" -#include "SG90.h" - - -//Initialize the position variables to neutral - -servo::servo() : pwm1(PTA5), pwm2(PTA12), pwm3(PTA4), pwm4(PTA5) - { - - init(); - } - - - -void servo::init() //Initialize all servo pwm's to a periode of 20ms - { - s1=s2=s3=s4=1400; //Initialize the position variables to neutral - pwm1.period_ms(20); - pwm1.pulsewidth_us(s1); - pwm2.period_ms(20); - pwm2.pulsewidth_us(s2); - pwm3.period_ms(20); - pwm3.pulsewidth_us(s3); - pwm4.period_ms(20); - pwm4.pulsewidth_us(s4); - } - -void servo::right(int a) //Lower the pulsewidth to make the servo turn clockwise - { - switch (a) - { - case 1: - if (s1 >= 540) s1 = (s1 - 20); - pwm1.pulsewidth_us(s1); - break; - - case 2: - if (s2 >= 540)s2 =s2 -20; - pwm2.pulsewidth_us(s2); - break; - - case 3: - if (s3 >= 540)s3 = s3 -20; - pwm3.pulsewidth_us(s3); - break; - - case 4: - if (s4 >= 540)s4 = s4 -20; - pwm4.pulsewidth_us(s4); - break; - - default : - break; - } - } - -void servo::left(int a) //Raise the pulsewidth to make the servo turn counter clockwise - { - switch (a) - { - case 1: - if (s1 <=2300) s1 = s1 + 20; - pwm1.pulsewidth_us(s1); - break; - - case 2: - if (s2 <=2300)s2 =s2 +20; - pwm2.pulsewidth_us(s2); - break; - - case 3: - if (s2 <=2300)s3 = s3 +20; - pwm3.pulsewidth_us(s3); - break; - - case 4: - if (s2 <=2300)s4 = s4 +20; - pwm4.pulsewidth_us(s4); - break; - - default : - break; - } - } -void servo::position(int a, int p) //Position control of the servor, a is the servo and p is the position in degrees - { - int pw; - pw = 500 + (p*10); - switch (a) - { - case 1: - pwm1.pulsewidth_us(pw); - break; - - case 2: - - pwm2.pulsewidth_us(pw); - break; - - case 3: - - pwm3.pulsewidth_us(pw); - break; - - case 4: - - pwm4.pulsewidth_us(pw); - break; - - default : - break; - } - - }