Explanation of pwm example code please

[nordicdev]

Hi, I need to configure pwm with 14uSec off time and 46uSec on time. I had a look at the pwm example in the install directory and also : developer.nordicsemi.com/.../a00039.html. But it is bit confusing, in the sense, if I need to set a duty cycle of 25% which registers to change. When I change the duty_cycle to 250, or, 100(in the local variable "duty_cycle"), there is no effect in the PWM wave generated. The On and Off times are 256msec always. Even tried pressing the configured buttons, but still no change in duty cycle. Attached my code here: main.c

Questions:

1. Which register to change to set a desired duty cycle(say 25% off time and 75% on time)
2. If I want to use the same PWM module for generating 25% duty cycle outputting on PIN1 for the first time, then 100% duty cycle outputting on PIN2 the next time and the above continues forever, do I need to deinit the gpiote and configure(nrf_gpio_tsk_config) every time I swap the PWM pins?

[nordicdev]

Hi Ole, thanks for your reply.

1. When you meant PWM library, did you mean app_pwm.c and app_pwm.h (which has app_pwm_channel_init etc in it)?
2. I dont have any problems using the PWM library. But, I want on/off time to go as low as 10usec. Is it possible with app_pwm.c library? I thought app_pwm.c uses softdevice. Since softdevice uses RTC, the lowest RTC can go is 30.5usec. But I need PWM pulses as low as 10usec. Also I need to use BLE in the same code base with PWM. Do you think I can still go for PWM library(app_pwm.c)? If not, what is your recommendation? Thanks.