PWM_V1

Collaboration diagram for PWM_V1:

Modules
	pwm channel definition
	pwm interrupt status definition
	pwm interrupt clear definition
	pwm feature control cmd definition
	pwm stop mode definition

Data Structures
struct	bflb_pwm_v1_channel_config_s
	PWM configuration structure. More...

Functions
void	bflb_pwm_v1_channel_init (struct bflb_device_s *dev, uint8_t ch, const struct bflb_pwm_v1_channel_config_s *config)
	Initialize pwm channel. More...
void	bflb_pwm_v1_channel_deinit (struct bflb_device_s *dev, uint8_t ch)
	Deinitialize pwm channel. More...
void	bflb_pwm_v1_start (struct bflb_device_s *dev, uint8_t ch)
	Start pwm channel output. More...
void	bflb_pwm_v1_stop (struct bflb_device_s *dev, uint8_t ch)
	Stop pwm channel output. More...
void	bflb_pwm_v1_set_period (struct bflb_device_s *dev, uint8_t ch, uint16_t period)
	Set pwm channel period to change pwm frequence. Frequcence(hz) = pwm source clock /div/period. More...
void	bflb_pwm_v1_channel_set_threshold (struct bflb_device_s *dev, uint8_t ch, uint16_t low_threhold, uint16_t high_threhold)
	Set pwm dutycycle. Dutycycle(%) = (high_threhold - low_threhold)/period * 100%. More...
void	bflb_pwm_v1_int_enable (struct bflb_device_s *dev, uint8_t ch, bool enable)
	Enable pwm interrupt. More...
uint32_t	bflb_pwm_v1_get_intstatus (struct bflb_device_s *dev)
	Get pwm interrupt status. More...
void	bflb_pwm_v1_int_clear (struct bflb_device_s *dev, uint32_t int_clear)
	Clear pwm interrupt status. More...
int	bflb_pwm_v1_feature_control (struct bflb_device_s *dev, uint8_t ch, int cmd, size_t arg)

Detailed Description

Function Documentation

bflb_pwm_v1_channel_deinit()

void bflb_pwm_v1_channel_deinit	(	struct bflb_device_s *	dev,
		uint8_t	ch
	)

Deinitialize pwm channel.

Parameters

[in]	dev	device handle
[in]	ch	channel number

bflb_pwm_v1_channel_init()

void bflb_pwm_v1_channel_init	(	struct bflb_device_s *	dev,
		uint8_t	ch,
		const struct bflb_pwm_v1_channel_config_s *	config
	)

Initialize pwm channel.

Parameters

[in]	dev	device handle
[in]	ch	channel number
[in]	config	pointer to save pwm channel config

bflb_pwm_v1_channel_set_threshold()

void bflb_pwm_v1_channel_set_threshold	(	struct bflb_device_s *	dev,
		uint8_t	ch,
		uint16_t	low_threhold,
		uint16_t	high_threhold
	)

Set pwm dutycycle. Dutycycle(%) = (high_threhold - low_threhold)/period * 100%.

Parameters

[in]	dev	device handle
[in]	ch	channel number
[in]	low_threhold	pwm low threhold
[in]	high_threhold	pwm high threhold

bflb_pwm_v1_feature_control()

int bflb_pwm_v1_feature_control	(	struct bflb_device_s *	dev,
		uint8_t	ch,
		int	cmd,
		size_t	arg
	)

Parameters

[in]	dev	device handle
[in]	ch	channel number
[in]	cmd	feature command, use pwm feature control cmd definition
[in]	arg	user data

Returns

A negated errno value on failure.

bflb_pwm_v1_get_intstatus()

uint32_t bflb_pwm_v1_get_intstatus

(

struct bflb_device_s *

dev

)

Get pwm interrupt status.

Parameters

[in]

dev

device handle

Returns

interrupt status, use pwm interrupt status definition

bflb_pwm_v1_int_clear()

void bflb_pwm_v1_int_clear	(	struct bflb_device_s *	dev,
		uint32_t	int_clear
	)

Clear pwm interrupt status.

Parameters

[in]	dev	device handle
[in]	int_clear	clear value, use pwm interrupt clear definition

bflb_pwm_v1_int_enable()

void bflb_pwm_v1_int_enable	(	struct bflb_device_s *	dev,
		uint8_t	ch,
		bool	enable
	)

Enable pwm interrupt.

Parameters

[in]	dev	device handle
[in]	ch	channel number
[in]	enable	true means enable, otherwise disable.

bflb_pwm_v1_set_period()

void bflb_pwm_v1_set_period	(	struct bflb_device_s *	dev,
		uint8_t	ch,
		uint16_t	period
	)

Set pwm channel period to change pwm frequence. Frequcence(hz) = pwm source clock /div/period.

Parameters

[in]	dev	device handle
[in]	ch	channel number
[in]	period	pwm period

bflb_pwm_v1_start()

void bflb_pwm_v1_start	(	struct bflb_device_s *	dev,
		uint8_t	ch
	)

Start pwm channel output.

Parameters

[in]	dev	device handle
[in]	ch	channel number

bflb_pwm_v1_stop()

void bflb_pwm_v1_stop	(	struct bflb_device_s *	dev,
		uint8_t	ch
	)

Stop pwm channel output.

Parameters

[in]	dev	device handle
[in]	ch	channel number