ifneq (,$(filter saul,$(USEMODULE)))
  DEFAULT_MODULE += servo_saul
endif

# if no servo driver implementation is chosen, we pick one
ifeq (,$(filter servo_pwm servo_timer,$(USEMODULE)))
  # choose servo_pwm except for MCUs known to be incompatible
  ifneq (,$(filter nrf5% nrf9160, $(CPU_FAM)))
    USEMODULE += servo_timer
  else
    USEMODULE += servo_pwm
  endif
endif

ifneq (,$(filter servo_pwm,$(USEMODULE)))
  FEATURES_REQUIRED += periph_pwm
endif

ifneq (,$(filter servo_timer,$(USEMODULE)))
  FEATURES_REQUIRED += periph_timer_periodic
  FEATURES_REQUIRED += periph_gpio
endif