pwm_common.c File Reference

#include "hal/driver/driver.h"

Macros
#define	VSF_PWM_CFG_FUNCTION_RENAME   DISABLED

Functions
vsf_err_t	vsf_pwm_init (vsf_pwm_t *pwm_ptr, vsf_pwm_cfg_t *cfg_ptr)
	Initialize a PWM instance.
void	vsf_pwm_fini (vsf_pwm_t *pwm_ptr)
	Finalize a PWM instance.
fsm_rt_t	vsf_pwm_enable (vsf_pwm_t *pwm_ptr)
	Enable PWM instance.
fsm_rt_t	vsf_pwm_disable (vsf_pwm_t *pwm_ptr)
	Disable a PWM instance.
vsf_pwm_capability_t	vsf_pwm_capability (vsf_pwm_t *pwm_ptr)
	Get the capability of PWM instance.
vsf_err_t	vsf_pwm_set (vsf_pwm_t *pwm_ptr, uint8_t channel, uint32_t period, uint32_t pulse)
	PWM set the period width and pulse width for a channel.
uint32_t	vsf_pwm_get_freq (vsf_pwm_t *pwm_ptr)
	PWM get clock frequency.
vsf_err_t	vsf_pwm_set_ns (vsf_pwm_t *pwm_ptr, uint8_t channel, uint32_t period_ns, uint32_t pulse_ns)
	Set PWM period in nanoseconds.
vsf_err_t	vsf_pwm_set_us (vsf_pwm_t *pwm_ptr, uint8_t channel, uint32_t period_us, uint32_t pulse_us)
	Set PWM period in microseconds.
vsf_err_t	vsf_pwm_set_ms (vsf_pwm_t *pwm_ptr, uint8_t channel, uint32_t period_ms, uint32_t pulse_ms)
	Set PWM period in milliseconds.

Macro Definition Documentation

VSF_PWM_CFG_FUNCTION_RENAME

#define VSF_PWM_CFG_FUNCTION_RENAME   DISABLED

Function Documentation

vsf_pwm_init()

vsf_err_t vsf_pwm_init	(	vsf_pwm_t *	pwm_ptr,
		vsf_pwm_cfg_t *	cfg_ptr
	)

Initialize a PWM instance.

Parameters

[in]	pwm_ptr	pointer to structure vsf_pwm_t
[in]	cfg_ptr	pointer to configuration structure vsf_pwm_cfg_t

Returns

vsf_err_t: VSF_ERR_NONE if initialization successful, otherwise return error code

Note

It is not necessary to call vsf_pwm_fini() to deinitialize. vsf_pwm_init() should be called before any other PWM API except vsf_pwm_capability().

vsf_pwm_fini()

void vsf_pwm_fini

(

vsf_pwm_t *

pwm_ptr

)

Finalize a PWM instance.

Parameters

[in]

pwm_ptr

a pointer to structure vsf_pwm_t

Returns

none

vsf_pwm_enable()

fsm_rt_t vsf_pwm_enable

(

vsf_pwm_t *

pwm_ptr

)

Enable PWM instance.

Parameters

[in]

pwm_ptr

pointer to structure vsf_pwm_t

Returns

fsm_rt_t: fsm_rt_cpl if PWM was enabled, fsm_rt_on_going if PWM is still enabling

vsf_pwm_disable()

fsm_rt_t vsf_pwm_disable

(

vsf_pwm_t *

pwm_ptr

)

Disable a PWM instance.

Parameters

[in]

pwm_ptr

a pointer to structure vsf_pwm_t

Returns

fsm_rt_t: fsm_rt_cpl if PWM was disabled, fsm_rt_on_going if PWM is still disabling

vsf_pwm_capability()

vsf_pwm_capability_t vsf_pwm_capability

(

vsf_pwm_t *

pwm_ptr

)

Get the capability of PWM instance.

Parameters

[in]

pwm_ptr

a pointer to structure vsf_pwm_t

Returns

vsf_pwm_capability_t: all capabilities of current PWM vsf_pwm_capability_t

vsf_pwm_set()

vsf_err_t vsf_pwm_set	(	vsf_pwm_t *	pwm_ptr,
		uint8_t	channel,
		uint32_t	period,
		uint32_t	pulse
	)

PWM set the period width and pulse width for a channel.

Parameters

[in]	pwm_ptr	a pointer to structure vsf_pwm_t
[in]	channel	PWM channel
[in]	period	PWM period width (in clock counter)
[in]	pulse	PWM pulse width (in clock counter)

Returns

vsf_err_t: VSF_ERR_NONE if the PWM set was successful, or a negative error code

vsf_pwm_get_freq()

uint32_t vsf_pwm_get_freq

(

vsf_pwm_t *

pwm_ptr

)

PWM get clock frequency.

Parameters

[in]

pwm_ptr

a pointer to structure vsf_pwm_t

Returns

uint32_t: PWM clock frequency in Hz

vsf_pwm_set_ns()

vsf_err_t vsf_pwm_set_ns	(	vsf_pwm_t *	pwm_ptr,
		uint8_t	channel,
		uint32_t	period,
		uint32_t	pulse
	)

Set PWM period in nanoseconds.

Parameters

[in]	pwm_ptr	a pointer to structure vsf_pwm_t
[in]	channel	PWM channel
[in]	period	PWM period width (in nanoseconds)
[in]	pulse	PWM pulse width (in nanoseconds)

Returns

vsf_err_t: VSF_ERR_NONE if the PWM set was successful, otherwise returns error code

vsf_pwm_set_us()

vsf_err_t vsf_pwm_set_us	(	vsf_pwm_t *	pwm_ptr,
		uint8_t	channel,
		uint32_t	period,
		uint32_t	pulse
	)

Set PWM period in microseconds.

Parameters

[in]	pwm_ptr	a pointer to structure vsf_pwm_t
[in]	channel	PWM channel
[in]	period	PWM period width (in microseconds)
[in]	pulse	PWM pulse width (in microseconds)

Returns

vsf_err_t: VSF_ERR_NONE if the PWM set was successful, otherwise returns error code

vsf_pwm_set_ms()

vsf_err_t vsf_pwm_set_ms	(	vsf_pwm_t *	pwm_ptr,
		uint8_t	channel,
		uint32_t	period,
		uint32_t	pulse
	)

Set PWM period in milliseconds.

Parameters

[in]	pwm_ptr	a pointer to structure vsf_pwm_t
[in]	channel	PWM channel
[in]	period	PWM period width (in milliseconds)
[in]	pulse	PWM pulse width (in milliseconds)

Returns

vsf_err_t: VSF_ERR_NONE if the PWM set was successful, otherwise returns error code