2.19. pwm — Pulse width modulation¶
Source code: src/drivers/pwm.h, src/drivers/pwm.c
Functions
-
int
pwm_init(struct pwm_driver_t *self_p, struct pwm_device_t *dev_p)¶ Initialize driver object.
- Return
- zero(0) or negative error code.
- Parameters
self_p: Driver object to be initialized.dev_p: Device to use.
-
int
pwm_set_duty(struct pwm_driver_t *self_p, uint8_t value)¶ Set the duty cycle.
- Return
- zero(0) or negative error code.
- Parameters
self_p: Driver object.value: Value to set [0..255].
-
int
pwm_get_duty(struct pwm_driver_t *self_p)¶ Get current duty cycle.
- Return
- Value in the range [0..255], or negative error code.
- Parameters
self_p: Driver object.
-
struct pwm_device_t *
pwm_pin_to_device(struct pin_device_t *pin_p)¶ Get the PWM device for given pin.
- Return
- PWM device, or NULL on error.
- Parameters
pin_p: The pin device to get the pwm device for.
Variables
-
struct pwm_device_t
pwm_device[PWM_DEVICE_MAX]¶