Example code for talking to a servo

[shampoo]

Hi

I am looking for some example code that shows best how to talk to a servo.. If there isn't any, any ideas which example project comes the closest ?

Thanks

J

[Sigurd]

Hi,

These servos are controlled by sending a Pulse width Modulation (PWM) signal. For the nRF51 the best starting point will be the PWM Library Example. It’s located in the folder

<SDK_InstallFolder>\examples\peripheral\pwm_library 

Try with a period of 20000L, and set the duty cycle to 5% and 10% for min and max servo position.

Code snippets:

app_pwm_config_t pwm1_cfg = APP_PWM_DEFAULT_CONFIG_1CH(20000L, PWM_PIN);




while (app_pwm_channel_duty_set(&PWM1, 0, 10) == NRF_ERROR_BUSY);

[Sigurd]

Are you testing with the DK now? Is the servo powered by the 5V output on the DK?