If you set it to 50%, your pulse width is 10ms. your servo needs to be in 1-2 ms.

Did you try your code as I suggested.

Can you get a CRO? If you can, check the ouput pulse width of your PSOC. the period should be 20mS and pusle width should be between 1 to 2 ms.

If you cannot, then try to use a function generator. Set the freqency to 50Hz, and duty cycle should be between 5 to 10%.

My guess is the reason your servo is "hunting" is you keep restarting

PWM in a loop. If you look at the code I sent you its basically this -

main() {

      startup stuff, including PWM

      ...

      while( 1 ) {

         call write pwm function with a value to set dc in it

         .....

         .....

      }

}

When you write a new compare value, the pwm immeadiately updates itself with new

PW value, so you could glitch the output. A better way would be to modify the function

I gave you to this -

void DCset( unsigned char dc ) {

    PWM8_1_Stop( );

    PWM8_1_WritePulseWidth( dc );                    /* set pulse width to generate a 50% duty cycle */

    PWM8_1_Start( );
}

But even this will still produce a foreshortened pulse under some circumstances.

The way to always have these PWMs always complete current cycle first is to implement

an ISR on terminal count, set a flag in ISR, and return to main() where if you find

flag set you do the update to PWM puslewidth, and clear the flag.

Lastly in general you do not want to write any HW in a tight loop, ie. keep updating at

high speed. That can mean the HW itself never has time to adapt to the changes

being rapidly written to it repeatedly, like a servo. Thats why you use a time delay in

your while( 1 ) loop to allow servo to respond, which I see you have commented out.

Regards, Dana.

Do you have a datasheet for the servo, a link.

Its not a "normal" RC/Toy/Hobby servo, which is the timing we have given

you in prior posts. Based on your 131 mS comment.

Regards, Dana.

All I can tell you is PSOC PWM works fine with Hobby type RC servos,

with the timing we posters gave you prior.

Still curious as to what specific servo your are using.

Regards, Dana.

1. YOU NEED TO START the PWM. it will not work if not started

2. The 3 function GenerateCenterPosition

 Of course you can use the counter time delay function you mention. But you need to make sure that your period is 20ms with pulse width of 1 to 2 ms.

void

GenerateLessThan90

void

void GenerateMoreThan90

The preiouse post is all corrupted.

Here is it again

1. THE PWM must be STARTED, you didn't do it in your main.c

2. The pulse width MUST between 1 to 2 ms. The value you use in the DCset MUST be between 10 and 20, same problem with the 3 generate functions.

3. UPDATE comments after changing your code. WRONG comment is worse then no comments.

4. If you use the delay timer function, Just make sure the period is 20ms with pusle width between 1 to 2 ms