PWM_Adapter

Overview

Data Structures
struct	hal_pwm_setup_config_t
	hal pwm configuration structure for hal pwm setting. More...

Macros
#define	HAL_PWM_HANDLE_SIZE   (8U)
	Hal pwm handle size. More...
#define	HAL_PWM_HANDLE_DEFINE(name)   uint32_t name[(HAL_PWM_HANDLE_SIZE + sizeof(uint32_t) - 1U) / sizeof(uint32_t)]
	Defines the PMW handle. More...

Typedefs
typedef void *	hal_pwm_handle_t
	Hal pwm handle. More...

Enumerations
enum	hal_pwm_mode_t {   kHAL_EdgeAlignedPwm = 0U,   kHAL_CenterAlignedPwm }
	Hal pwm mode. More...
enum	hal_pwm_level_select_t {   kHAL_PwmNoPwmSignal = 0U,   kHAL_PwmLowTrue,   kHAL_PwmHighTrue }
	PWM output pulse level select: high-true, low-true or no output. More...
enum	hal_pwm_status_t {   kStatus_HAL_PwmSuccess = kStatus_Success,   kStatus_HAL_PwmFail = MAKE_STATUS(kStatusGroup_HAL_PWM, 1),   kStatus_HAL_PwmNotSupport = MAKE_STATUS(kStatusGroup_HAL_PWM, 2),   kStatus_HAL_PwmOutOfRanger = MAKE_STATUS(kStatusGroup_HAL_PWM, 3) }
	Hal pwm status. More...

Functions
hal_pwm_status_t	HAL_PwmInit (hal_pwm_handle_t halPwmHandle, uint8_t instance, uint32_t srcClock_Hz)
	Initializes the pwm adapter module for a pwm basic operation. More...
void	HAL_PwmDeinit (hal_pwm_handle_t halPwmHandle)
	DeInitilizate the pwm adapter module. More...
hal_pwm_status_t	HAL_PwmSetupPwm (hal_pwm_handle_t halPwmHandle, uint8_t channel, hal_pwm_setup_config_t *setupConfig)
	setup pwm. More...
hal_pwm_status_t	HAL_PwmUpdateDutycycle (hal_pwm_handle_t halPwmHandle, uint8_t channel, hal_pwm_mode_t mode, uint8_t dutyCyclePercent)
	Update duty cycle of pwm. More...

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Data Structure Documentation

struct hal_pwm_setup_config_t

Data Fields
hal_pwm_level_select_t	level
	PWM output pulse level select.
hal_pwm_mode_t	mode
	PWM mode select.
uint32_t	pwmFreq_Hz
	PWM frequency.
uint8_t	dutyCyclePercent
	PWM duty cycle percent.

Macro Definition Documentation

#define HAL_PWM_HANDLE_SIZE   (8U)

#define HAL_PWM_HANDLE_DEFINE

(

name

)

uint32_t name[(HAL_PWM_HANDLE_SIZE + sizeof(uint32_t) - 1U) / sizeof(uint32_t)]

This macro is used to define a 4 byte aligned PWM handle. Then use "(hal_pwm_handle_t)name" to get the PWM handle.

The macro should be global and could be optional. You could also define PWM handle by yourself.

This is an example,

*   HAL_PWM_HANDLE_DEFINE(pwmHandle);
* 

Parameters

name	The name string of the PMW handle.

Typedef Documentation

typedef void* hal_pwm_handle_t

Enumeration Type Documentation

enum hal_pwm_mode_t

Enumerator
kHAL_EdgeAlignedPwm	Edge aligned PWM.
kHAL_CenterAlignedPwm	Center aligned PWM.

enum hal_pwm_level_select_t

Enumerator
kHAL_PwmNoPwmSignal	No PWM output on pin.
kHAL_PwmLowTrue	Low true pulses.
kHAL_PwmHighTrue	High true pulses.

enum hal_pwm_status_t

Enumerator
kStatus_HAL_PwmSuccess	Success.
kStatus_HAL_PwmFail	Failure.
kStatus_HAL_PwmNotSupport	Not support.
kStatus_HAL_PwmOutOfRanger	Pwm is Out Of Ranger.

Function Documentation

hal_pwm_status_t HAL_PwmInit	(	hal_pwm_handle_t	halPwmHandle,
		uint8_t	instance,
		uint32_t	srcClock_Hz
	)

Note

This API should be called at the beginning of the application using the pwm adapter.

Example below shows how to use this API to configure the PWM.

*   HAL_PWM_HANDLE_DEFINE(pwmHandle);
*   HAL_PwmInit((hal_pwm_handle_t)pwmHandle, BOARD_PWM_INSTANCE, BOARD_PWM_SOURCE_CLOCK);
* 

Parameters

halPwmHandle	Hal pwm adapter handle, the handle buffer with size HAL_PWM_HANDLE_SIZE should be allocated at upper level The handle should be 4 byte aligned, because unaligned access doesn't be supported on some devices. You can define the handle in the following two ways: HAL_PWM_HANDLE_DEFINE(halPwmHandle); or uint32_t halPwmHandle[((HAL_PWM_HANDLE_SIZE + sizeof(uint32_t) - 1U) / sizeof(uint32_t))];
instance	The instance index of the hardware PWM. For example, if FTM is used as the PWM hardware, 0 should be set to "instance" to use FTM0; 2 should be set to "instance" to use FTM2 detail information please refer to the SOC corresponding RM. Invalid instance value will cause initialization failure.
srcClock_Hz	Frequency of source clock of the pwm module

Return values

kStatus_HAL_PwmSuccess

pwm initialization succeed

void HAL_PwmDeinit

(

hal_pwm_handle_t

halPwmHandle

)

Note

This API should be called when not using the pwm adapter driver anymore.

Parameters

halPwmHandle

Hal pwm adapter handle

hal_pwm_status_t HAL_PwmSetupPwm	(	hal_pwm_handle_t	halPwmHandle,
		uint8_t	channel,
		hal_pwm_setup_config_t *	setupConfig
	)

Note

This API should be called when setup the pwm.

Parameters

halPwmHandle	Hal pwm adapter handle
channel	Channel of pwm
setupConfig	A pointer to the HAL pwm setup configuration structure

Return values

kStatus_HAL_PwmSuccess

pwm setup succeed

hal_pwm_status_t HAL_PwmUpdateDutycycle	(	hal_pwm_handle_t	halPwmHandle,
		uint8_t	channel,
		hal_pwm_mode_t	mode,
		uint8_t	dutyCyclePercent
	)

Note

This API should be called when need update duty cycle.

Parameters

halPwmHandle	Hal pwm adapter handle
channel	Channel of pwm
mode	PWM mode select
dutyCyclePercent	PWM duty cycle percent

Return values

kStatus_HAL_PwmSuccess

pwm Update duty cycle succeed