Intel Galileo with Osepp servo

Projects Programming
1

Hi,
I'm very excited about starting my first project!
I got an Intel Galileo board connected with an Osepp LS-8101F servo.

All I wanna do for now is to set the servo position. I understand that I cannot use the standard Arduino servo library.
Instead I have to send highs and lows through the digital interface. Is that right?

I'm pretty sure everything is wired up correctly. Here is what I got so far:

#include <UtilTime.h>

int servoPin=3;
int t0;
int pulseLen=20000;
int maxLen=2000;

int min(int x,int y){
  if(x<=y)return x;return y;}

void setup() {
  // put your setup code here, to run once:
  pinMode(servoPin,OUTPUT);
  digitalWrite(servoPin,LOW);
  t0=millis();
}

void loop() {
  // put your main code here, to run repeatedly: 
  int highLen=1000+(millis()-t0)/20;
  if(highLen>2000)
    highLen=1500;
  digitalWrite(servoPin,HIGH);
  delayMicroseconds(highLen);
  digitalWrite(servoPin,LOW);
  delayMicroseconds(pulseLen-highLen);
}

The servo runs at a constant velocity and never stops.

I'd be really grateful if someone could point me to a reference or library that helps me set the servo position.
Thanks!

2

The servo "runs and never stops" ??

Is it a "continuous rotation" servo, or an angle control servo ?

3

it's continuous rotation

4

With a range from 0 - 180,0 is full reverse, 90 would be stop, 180 is full forward. You need to calculate your mid point to stop the servo.

5

Did you buy a continuous rotation servo on purpose or by accident ?
If you need to set its position accurately rather than rotate it 360 degrees then a normal servo is so much easier.

6

Instead I have to send highs and lows through the digital interface. Is that right?

I don't know if you'll be able to "bit bang" servos on Galileo digital pins. They go through a pretty slow I2C chip...