Control a R/C servo with an analog input

#include "mbed.h"

AnalogIn position(p20);
PwmOut servo(p21);

int main() {
    servo.period(0.020f);          // servo requires a 20ms period
    while (1) {
        servo.pulsewidth(0.001f + 0.001f * position); // servo position determined by a pulse width between 1-2ms
    }
}

AnalogIn reading 16-bit normalized samples

#include "mbed.h"

AnalogIn input(p20);
DigitalOut led1(LED1);

int main() {
    uint16_t samples[1024];

    for(int i=0; i<1024; i++) {
        samples[i] = input.read_u16();
        wait_ms(1);
    }

    printf("Results:\n");
    for(int i=0; i<1024; i++) {
        printf("%d, 0x%04X\n", i, samples[i]);
    }
}   

#include "mbed.h"

AnalogIn ain(p20);
DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);
DigitalOut led4(LED4);

int main() {
    while (1){
        led1 = (ain > 0.2f) ? 1 : 0;
        led2 = (ain > 0.4f) ? 1 : 0;
        led3 = (ain > 0.6f) ? 1 : 0;
        led4 = (ain > 0.8f) ? 1 : 0;
    }
}