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);

[shampoo]

I just ran your sample code again but this time directly connected to the Nordic DK without the Sparkfun board and it works perfectly. So the issue is definitely lack of volts from the Sparkfun.

Thank you