Kernel

Exports for Kernel. More...

Typedefs
typedef SceInt32	SceSysTimerId
typedef void(*	SceSysTimerCallback) (SceSysTimerId timer, void *pUserData)

Enumerations
enum	SceSysTimerType { SCE_SYSTIMER_TYPE_LONG = 1 , SCE_SYSTIMER_TYPE_WORD = 2 }
enum	SceSysTimerClockSource { SCE_SYSTIMER_CLOCK_SOURCE_SYS = 0 , SCE_SYSTIMER_CLOCK_SOURCE_48MHZ = 3 }

Functions
	VITASDK_BUILD_ASSERT_EQ (4, SceSysTimerId)
SceSysTimerId	ksceKernelSysTimerAlloc (SceSysTimerType timerType)
	Allocate one of the system's timers.
int	ksceKernelSysTimerFree (SceSysTimerId timerId)
	Free an allocated system timer.
int	ksceKernelSysTimerStartCount (SceSysTimerId timerId)
	Start a timer.
int	ksceKernelSysTimerStopCount (SceSysTimerId timerId)
	Stop a timer.
int	ksceKernelSysTimerSetClockSource (SceSysTimerId timerId, SceSysTimerClockSource clockSource, SceUInt8 prescaleFactor)
	Configure the source clock signal for a timer.
int	ksceKernelSysTimerSetInterval (SceSysTimerId timerId, SceKernelSysClock interval)
	Set the timer interval.
int	ksceKernelSysTimerSetHandler (SceSysTimerId timerId, SceSysTimerCallback callback, SceUInt32 targetCPU, void *pUserData)
	Set the interrupt callback handler for the timer.
int	ksceKernelSysTimerGetCount (SceSysTimerId timerId, SceKernelSysClock *pCount)
	Get the timer count value.
int	ksceKernelSysTimerSetCount (SceSysTimerId timerId, SceKernelSysClock count)
	Set the timer count value.
int	ksceKernelSysTimerResetCount (SceSysTimerId timerId)
	Reset the timer count.

Detailed Description

Exports for Kernel.

---

Using this library in your project

Include the header file in your project:

#include <psp2kern/kernel/systimer.h> 

Link the library to the executable:

SceSystimerForDriver_stub 

---

Typedef Documentation

SceSysTimerId

typedef SceInt32 SceSysTimerId

SceSysTimerCallback

typedef void(* SceSysTimerCallback) (SceSysTimerId timer, void *pUserData)

Enumeration Type Documentation

SceSysTimerType

enum SceSysTimerType

Enumerator
SCE_SYSTIMER_TYPE_LONG	64-bit timer
SCE_SYSTIMER_TYPE_WORD	32-bit timer

SceSysTimerClockSource

enum SceSysTimerClockSource

Enumerator
SCE_SYSTIMER_CLOCK_SOURCE_SYS	190/222MHz Frequency. Controlled by kscePower[Get|Set]SysClockFrequency
SCE_SYSTIMER_CLOCK_SOURCE_48MHZ	48MHz Frequency. Used by GpuEs4 and Threadmgr timers

Function Documentation

VITASDK_BUILD_ASSERT_EQ()

VITASDK_BUILD_ASSERT_EQ	(	4	,
		SceSysTimerId
	)

ksceKernelSysTimerAlloc()

SceSysTimerId ksceKernelSysTimerAlloc

(

SceSysTimerType

timerType

)

Allocate one of the system's timers.

Parameters

timerType

- One of SceSysTimerType.

Returns

The id of the new timer on success, < 0 on error.

ksceKernelSysTimerFree()

int ksceKernelSysTimerFree

(

SceSysTimerId

timerId

)

Free an allocated system timer.

Parameters

timerId

- The timer to free.

Returns

0 on success, < 0 on error.

ksceKernelSysTimerStartCount()

int ksceKernelSysTimerStartCount

(

SceSysTimerId

timerId

)

Start a timer.

Parameters

timerId

- The target timer.

Returns

0 on success, < 0 on error.

ksceKernelSysTimerStopCount()

int ksceKernelSysTimerStopCount

(

SceSysTimerId

timerId

)

Stop a timer.

Parameters

timerId

- The target timer.

Returns

0 on success, < 0 on error.

ksceKernelSysTimerSetClockSource()

int ksceKernelSysTimerSetClockSource	(	SceSysTimerId	timerId,
		SceSysTimerClockSource	clockSource,
		SceUInt8	prescaleFactor
	)

Configure the source clock signal for a timer.

The final input clock is determined as such:

inputClock = sourceClock / (prescaleFactor + 1)

Parameters

timerId	- The target timer.
clockSource	- The source of the clock signal.
prescaleFactor	- The prescale factor applied to the clock signal.

Returns

0 on success, < 0 on error.

ksceKernelSysTimerSetInterval()

int ksceKernelSysTimerSetInterval	(	SceSysTimerId	timerId,
		SceKernelSysClock	interval
	)

Set the timer interval.

The interval determines the count at which the timer will overflow to 0, and an interrupt will be fired.

Parameters

timerId	- The target timer.
interval	- The timer interval.

Returns

0 on success, < 0 on error.

ksceKernelSysTimerSetHandler()

int ksceKernelSysTimerSetHandler	(	SceSysTimerId	timerId,
		SceSysTimerCallback	callback,
		SceUInt32	targetCPU,
		void *	pUserData
	)

Set the interrupt callback handler for the timer.

Parameters

timerId	- The target timer.
callback	- The callback function.
targetCPU	- The CPU cores the interrupt can be handled from.
pUserData	- User data to be passed to the callback.

Returns

0 on success, < 0 on error.

ksceKernelSysTimerGetCount()

int ksceKernelSysTimerGetCount	(	SceSysTimerId	timerId,
		SceKernelSysClock *	pCount
	)

Get the timer count value.

Parameters

timerId	- The target timer.
pCount	- The variable to store the count to.

Returns

0 on success, < 0 on error.

ksceKernelSysTimerSetCount()

int ksceKernelSysTimerSetCount	(	SceSysTimerId	timerId,
		SceKernelSysClock	count
	)

Set the timer count value.

Parameters

timerId	- The target timer.
count	- The count to set.

Returns

0 on success, < 0 on error.

ksceKernelSysTimerResetCount()

int ksceKernelSysTimerResetCount

(

SceSysTimerId

timerId

)

Reset the timer count.

Parameters

timerId

- The target timer.

Returns

0 on success, < 0 on error.