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Projekt Servo
In RC Servo's you set the position based on duty cycle or pulse width of the pwm signal.
This example code uses a period of 0.020s and increases the pulse width by 0.0001s on each pass. This will cause an increase of .5% of the servo's range every .25s. In effect the servo will move 2% of its range per second, meaning after 50 seconds the servo will have gone from 0% to 100% of its range.
#include "mbed.h"
PwmOut servo(p21);
int main() {
servo.period(0.020); // servo requires a 20ms period
while (1) {
for(float offset=0.0; offset<0.001; offset+=0.0001) {
servo.pulsewidth(0.001 + offset);
// servo position determined by a pulsewidth between 1-2ms
wait(0.25);
}
}
}
Untersuchen Sie folgende Mbed-Bibliothek.
Servo myservo(P0_8); myservo.calibrate(range, 45.0); myservo = position; wait_ms(500);
