Overview

Data Structures
struct	hal_timer_config_t
	HAL timer configuration structure for HAL timer setting. More...

Macros
#define	HAL_TIMER_HANDLE_SIZE (20U)
	Definition of timer adapter handle size. More...

#define	TIMER_HANDLE_DEFINE(name) uint32_t name[((HAL_TIMER_HANDLE_SIZE + sizeof(uint32_t) - 1U) / sizeof(uint32_t))]
	Defines the timer handle. More...

Typedefs
typedef void(*	hal_timer_callback_t )(void *param)
	The timer adapter component. More...

typedef void *	hal_timer_handle_t
	HAL timer handle. More...

Enumerations
enum	hal_timer_status_t { kStatus_HAL_TimerSuccess = kStatus_Success, kStatus_HAL_TimerNotSupport = MAKE_STATUS(kStatusGroup_HAL_TIMER, 1), kStatus_HAL_TimerIsUsed = MAKE_STATUS(kStatusGroup_HAL_TIMER, 2), kStatus_HAL_TimerInvalid = MAKE_STATUS(kStatusGroup_HAL_TIMER, 3), kStatus_HAL_TimerOutOfRanger = MAKE_STATUS(kStatusGroup_HAL_TIMER, 4) }
	HAL timer status. More...

Functions
hal_timer_status_t	HAL_TimerInit (hal_timer_handle_t halTimerHandle, hal_timer_config_t *halTimerConfig)
	Initializes the timer adapter module for a timer basic operation. More...

void	HAL_TimerDeinit (hal_timer_handle_t halTimerHandle)
	DeInitilizate the timer adapter module. More...

void	HAL_TimerEnable (hal_timer_handle_t halTimerHandle)
	Enable the timer adapter module. More...

void	HAL_TimerDisable (hal_timer_handle_t halTimerHandle)
	Disable the timer adapter module. More...

void	HAL_TimerInstallCallback (hal_timer_handle_t halTimerHandle, hal_timer_callback_t callback, void *callbackParam)
	Install the timer adapter module callback function. More...

uint32_t	HAL_TimerGetCurrentTimerCount (hal_timer_handle_t halTimerHandle)
	Get the timer count of the timer adapter. More...

hal_timer_status_t	HAL_TimerUpdateTimeout (hal_timer_handle_t halTimerHandle, uint32_t timeout)
	Update the timeout of the timer adapter to generate timeout interrupt. More...

uint32_t	HAL_TimerGetMaxTimeout (hal_timer_handle_t halTimerHandle)
	Get maximum Timer timeout. More...

void	HAL_TimerExitLowpower (hal_timer_handle_t halTimerHandle)
	Timer adapter power up function. More...

void	HAL_TimerEnterLowpower (hal_timer_handle_t halTimerHandle)
	Timer adapter power down function. More...

Data Structure Documentation

struct hal_timer_config_t

Data Fields
uint32_t	timeout
	Timeout of the timer, should use microseconds, for example: if set timeout to 1000, mean 1000 microseconds interval would generate timer timeout interrupt.

uint32_t	srcClock_Hz
	Source clock of the timer.

uint8_t	instance
	Hardware timer module instance, for example: if you want use FTM0,then the instance is configured to 0, if you want use FTM2 hardware timer, then configure the instance to 2, detail information please refer to the SOC corresponding RM.Invalid instance value will cause initialization failure. More...

uint8_t	clockSrcSelect
	Select clock source. More...

Field Documentation

uint8_t hal_timer_config_t::instance

uint8_t hal_timer_config_t::clockSrcSelect

It is for timer clock select, if the lptmr does not want to use the default clock source

Macro Definition Documentation

#define HAL_TIMER_HANDLE_SIZE (20U)

#define TIMER_HANDLE_DEFINE ( name ) uint32_t name[((HAL_TIMER_HANDLE_SIZE + sizeof(uint32_t) - 1U) / sizeof(uint32_t))]

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

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

This is an example,

* TIMER_HANDLE_DEFINE(timerHandle);

*

Parameters

name	The name string of the timer handle.

Typedef Documentation

typedef void(* hal_timer_callback_t)(void *param)

The timer adapter is built based on the timer SDK driver provided by the NXP MCUXpresso SDK. The timer adapter could provide high accuracy timer for user. Since callback function would be handled in ISR, and timer clock use high accuracy clock, user can get accuracy millisecond timer.

The timer adapter would be used with different HW timer modules like FTM, PIT, LPTMR. But at the same time, only one HW timer module could be used. On different platforms, different HW timer module would be used. For the platforms which have multiple HW timer modules, one HW timer module would be selected as the default, but it is easy to change the default HW timer module to another. Just two steps to switch the HW timer module: 1.Remove the default HW timer module source file from the project 2.Add the expected HW timer module source file to the project. For example, in platform FRDM-K64F, there are two HW timer modules available, FTM and PIT. FTM is used as the default HW timer, so ftm_adapter.c and timer.h is included in the project by default. If PIT is expected to be used as the HW timer, ftm_adapter.c need to be removed from the project and pit_adapter.c should be included in the project

HAL timer callback function.

typedef void* hal_timer_handle_t

Enumeration Type Documentation

enum hal_timer_status_t

Enumerator
kStatus_HAL_TimerSuccess	Success.
kStatus_HAL_TimerNotSupport	Not Support.
kStatus_HAL_TimerIsUsed	timer is used
kStatus_HAL_TimerInvalid	timer is invalid
kStatus_HAL_TimerOutOfRanger	timer is Out Of Ranger

Function Documentation

hal_timer_status_t HAL_TimerInit	(	hal_timer_handle_t	halTimerHandle,
		hal_timer_config_t *	halTimerConfig
	)

Note: This API should be called at the beginning of the application using the timer adapter. For Initializes timer adapter,
* TIMER_HANDLE_DEFINE(halTimerHandle);

* hal_timer_config_t halTimerConfig;

* halTimerConfig.timeout = 1000;

* halTimerConfig.srcClock_Hz = BOARD_GetTimeSrcClock();

* halTimerConfig.instance = 0;

* HAL_TimerInit((hal_timer_handle_t)halTimerHandle, &halTimerConfig);

*

Parameters

halTimerHandle	HAL timer adapter handle, the handle buffer with size HAL_TIMER_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: TIMER_HANDLE_DEFINE(halTimerHandle); or uint32_t halTimerHandle[((HAL_TIMER_HANDLE_SIZE + sizeof(uint32_t) - 1U) / sizeof(uint32_t))];
halTimerConfig	A pointer to the HAL timer configuration structure

Return values

kStatus_HAL_TimerSuccess	The timer adapter module initialization succeed.
kStatus_HAL_TimerOutOfRanger	The timer adapter instance out of ranger.

void HAL_TimerDeinit ( hal_timer_handle_t halTimerHandle )

Note: This API should be called when not using the timer adapter anymore.

Parameters

halTimerHandle HAL timer adapter handle

void HAL_TimerEnable ( hal_timer_handle_t halTimerHandle )

Note: This API should be called when enable the timer adapter.

Parameters

halTimerHandle HAL timer adapter handle

void HAL_TimerDisable ( hal_timer_handle_t halTimerHandle )

Note: This API should be called when disable the timer adapter.

Parameters

halTimerHandle HAL timer adapter handle

void HAL_TimerInstallCallback	(	hal_timer_handle_t	halTimerHandle,
		hal_timer_callback_t	callback,
		void *	callbackParam
	)

Note: This API should be called to when to install callback function for the timer.Since callback function would be handled in ISR, and timer clock use high accuracy clock, user can get accuracy millisecond timer.

Parameters

halTimerHandle	HAL timer adapter handle
callback	The installed callback function by upper layer
callbackParam	The callback function parameter

uint32_t HAL_TimerGetCurrentTimerCount ( hal_timer_handle_t halTimerHandle )

Note: This API should be return the real-time timer counting value in a range from 0 to a timer period, and return microseconds.

Parameters

halTimerHandle HAL timer adapter handle

Return values

the	real-time timer counting value and return microseconds.

hal_timer_status_t HAL_TimerUpdateTimeout	(	hal_timer_handle_t	halTimerHandle,
		uint32_t	timeout
	)

Note: This API should be called when need set the timeout of the timer interrupt..

Parameters

halTimerHandle	HAL timer adapter handle
timeout	Timeout time, should be used microseconds.

Return values

kStatus_HAL_TimerSuccess	The timer adapter module update timeout succeed.
kStatus_HAL_TimerOutOfRanger	The timer adapter set the timeout out of ranger.

uint32_t HAL_TimerGetMaxTimeout ( hal_timer_handle_t halTimerHandle )

Note: This API should to get maximum Timer timeout value to avoid overflow

Parameters

halTimerHandle HAL timer adapter handle

Return values

get	the real-time timer maximum timeout value and return microseconds.

void HAL_TimerExitLowpower ( hal_timer_handle_t halTimerHandle )

Note: This API should be called by low power module when system exit from sleep mode.

Parameters

halTimerHandle HAL timer adapter handle

void HAL_TimerEnterLowpower ( hal_timer_handle_t halTimerHandle )

Note: This API should be called by low power module before system enter into sleep mode.

Parameters

halTimerHandle HAL timer adapter handle

Overview

Data Structures

Macros

Typedefs

Enumerations

Functions

Data Structure Documentation

Data Fields

Field Documentation

Macro Definition Documentation

Typedef Documentation

Enumeration Type Documentation

Function Documentation