Kernel

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 

---

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

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

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.