Header file - Function prototypes for operating system. More...

#include "techtype.h"

Macros
#define	HW_EV_CLASS_HANDSET 0

#define	HW_EV_CLASS_KEYPAD 1

#define	HW_EV_CLASS_LNB 2

#define	HW_EV_CLASS_TUNER 3

#define	HW_EV_CLASS_DECODE 4

#define	HW_EV_CLASS_SCART 5

#define	HW_EV_CLASS_DISK 6

#define	HW_EV_CLASS_DVD 7

#define	HW_EV_CLASS_PVR 8

#define	HW_EV_CLASS_USB 9

#define	HW_EV_CLASS_HDMI 10

#define	HW_EV_CLASS_CEC 11

#define	HW_EV_CLASS_PRIVATE 255 /* Class to allow events to be created that are unique to a platform */

#define	HW_EV_TYPE_FALSE 0

#define	HW_EV_TYPE_TRUE 1

#define	HW_EV_TYPE_LOCKED 2

#define	HW_EV_TYPE_NOTLOCKED 3

#define	HW_EV_TYPE_AUDIO_STARTED 4

#define	HW_EV_TYPE_VIDEO_STARTED 5

#define	HW_EV_TYPE_AUDIO_STOPPED 6

#define	HW_EV_TYPE_VIDEO_STOPPED 7

#define	HW_EV_TYPE_4_3 8

#define	HW_EV_TYPE_16_9 9

#define	HW_EV_TYPE_SIGNAL_DATA_BAD 10

#define	HW_EV_TYPE_SIGNAL_DATA_OK 11

#define	HW_EV_TYPE_FORMAT_COMPLETE 12

#define	HW_EV_TYPE_FORMAT_FAILED 13

#define	HW_EV_TYPE_REPAIR_COMPLETE 14

#define	HW_EV_TYPE_REPAIR_FAILED 15

#define	HW_EV_TYPE_DVD_DISK_INSERTED 16

#define	HW_EV_TYPE_DVD_DISK_REMOVED 17

#define	HW_EV_TYPE_PVR_REC_START 18

#define	HW_EV_TYPE_PVR_REC_STOP 19

#define	HW_EV_TYPE_PVR_PLAY_START 20

#define	HW_EV_TYPE_PVR_PLAY_STOP 21

#define	HW_EV_TYPE_PVR_PLAY_BOF 22 /* Playback has reached the beginning of the file */

#define	HW_EV_TYPE_PVR_PLAY_EOF 23 /* Playback has reached the end of the file */

#define	HW_EV_TYPE_PVR_PLAY_NOTIFY_TIME 24 /* Playback has reached the end of the file */

#define	HW_EV_TYPE_SAMPLE_STOPPED 25

#define	HW_EV_TYPE_DISK_CONNECTED 26

#define	HW_EV_TYPE_DISK_REMOVED 27

#define	HW_EV_TYPE_DISK_FULL 28

#define	HW_EV_TYPE_HDMI_CONNECT 29

#define	HW_EV_TYPE_HDMI_DISCONNECT 30

#define	HW_EV_TYPE_CEC_PLAY 31

#define	HW_EV_TYPE_CEC_STANDBY 32

#define	HW_EV_TYPE_AD_STARTED 34

#define	HW_EV_TYPE_AD_STOPPED 35

#define	HW_EV_TYPE_VIDEO_UNDERFLOW 36

#define	HW_EV_TYPE_AUDIO_UNDERFLOW 37

#define	TIMEOUT_NOW 0

#define	TIMEOUT_NEVER 0xffff

Functions
void	STB_OSInitialise (void)
	Allows setting of initial boot time.

void	STB_OSRegisterCallback (void(func)(BOOLEAN, U16BIT, U16BIT, void , U32BIT))
	Register the function that will be called when STB_OSSendEvent is used. More...

void	STB_OSSendEvent (BOOLEAN repeat, U16BIT event_class, U16BIT event_type, void *data, U32BIT data_size)
	Send an event by calling the registered callback function. More...

void	STB_OSSetClockRTC (U32BIT num_seconds)
	Set the local time in seconds since midnight 1-1-1970. More...

U32BIT	STB_OSGetClockRTC (void)
	Returns the current time in seconds. This is calculated by using the set UTC time and adding the difference between the system boot time when it was set (sync_time) and the system boot time now. More...

void	STB_OSSetClockGMT (U32BIT num_seconds)
	Set the time in seconds since midnight 1-1-1970 in GMT. More...

U32BIT	STB_OSGetClockGMT (void)
	Returns the system time in seconds. More...

U32BIT	STB_OSGetClockMilliseconds (void)
	Get Current Computer Clock Time. More...

U32BIT	STB_OSGetClockDiff (U32BIT timestamp)
	Get Difference between Given Time and Current Time. More...

void *	STB_OSCreateTask (void(function)(void ), void param, U32BIT stack, U8BIT priority, U8BIT name)
	Create a New Task to the calling process. Upon success, the created task runs on its own stack, as part of the calling process context. Task termination must be achieved by calling STB_OSDestroyTask() More...

void	STB_OSTaskSuspend (void)
	Suspend the calling task.

void	STB_OSTaskDelay (U16BIT timeout)
	Delay Task for Specifed Time Period. More...

void	STB_OSTaskSleep (void)
	Put Calling Task to Sleep. This is the equivalent of a Task Reschedule which is useful when a task wants to release the CPU on an application preemption point.

void	STB_OSTaskWakeUp (void)
	Wake up a task that was put to sleep when it called STB_OSTaskSleep().

void	STB_OSDestroyTask (void *task)
	Delete Task must be called upon termination of each task as it frees all OS specific resources allocated for the specific task.

U8BIT	STB_OSTaskPriority (void *task, U8BIT priority)
	Set a New Priority Level for Specified Task. More...

void	STB_OSTaskLock (void)
	Lock the calling task. Prevents task scheduler from preempting calling task and should always be used as a pair with STB_OSTaskUnlock() to create a critical region of code execution that cannot be interrupted by another task.

void	STB_OSTaskUnlock (void)
	Unlock the calling task. Allows task scheduler to preempting calling task and should always be used as a pair with STB_OSTaskLock() to create a critical region of code execution that cannot be interrupted by another task.

void *	STB_OSGetCurrentTask (void)
	Returns the handle of the current task. More...

void *	STB_OSCreateQueue (U16BIT msg_size, U16BIT msg_max)
	Create Queue of given number of messages and size of message. More...

BOOLEAN	STB_OSReadQueue (void queue, void msg, U16BIT msg_size, U16BIT timeout)
	Read a message from a queue. More...

BOOLEAN	STB_OSWriteQueue (void queue, void msg, U16BIT msg_size, U16BIT timeout)
	Write a message to the queue. More...

BOOLEAN	STB_OSDestroyQueue (void *queue)
	Destroy Queue. More...

void *	STB_OSCreateSemaphore (void)
	Create a Semaphore. More...

void *	STB_OSCreateCountSemaphore (U32BIT value)
	Create a counting semaphore. More...

void	STB_OSInitCountSemaphore (void *semaphore, U32BIT value)
	Initialise a counting semaphore. More...

void	STB_OSDeleteSemaphore (void *semaphore)
	Delete a Semaphore. More...

void	STB_OSSemaphoreWait (void *semaphore)
	Wait on Semaphore Indefinity or Until Released. More...

void	STB_OSSemaphoreSignal (void *semaphore)
	Signal a Semaphore to Release it by decrementing its counter. More...

BOOLEAN	STB_OSSemaphoreWaitTimeout (void *semaphore, U16BIT timeout)
	Wait on Semaphore for Set Time Period in an Attempt to Acquire. More...

void *	STB_OSCreateMutex (void)
	Create a mutex. More...

void	STB_OSMutexLock (void *mutex)
	Lock a mutex (a.k.a. 'enter', 'wait' or 'get'). More...

void	STB_OSMutexUnlock (void *mutex)
	Unlock a mutex (a.k.a. 'leave', 'signal' or 'release') More...

void	STB_OSDeleteMutex (void *mutex)
	Delete a mutex. More...

void	STB_OSResetCPU (void)
	Reset the board.

Detailed Description

Header file - Function prototypes for operating system.

Date: 12/02/2002

Function Documentation

void* STB_OSCreateCountSemaphore ( U32BIT value )

Create a counting semaphore.

Parameters

value initial value for semaphore.

Returns: Seamphore handle upon success, or NULL upon failure.

void* STB_OSCreateMutex ( void )

Create a mutex.

Returns: Newly created mutex, or NULL.

void* STB_OSCreateQueue	(	U16BIT	msg_size,
		U16BIT	msg_max
	)

Create Queue of given number of messages and size of message.

Parameters

msg_size	Queue Message Packet Size
num_msgs	Queue Message Depth in Packets

Returns: Queue Handle - Number for success, NULL upon failure.

void* STB_OSCreateSemaphore ( void )

Create a Semaphore.

Returns: Seamphore Handle Address upon success, or NULL upon failure.

void* STB_OSCreateTask	(	void()(void )	function,
		void *	param,
		U32BIT	stack,
		U8BIT	priority,
		U8BIT *	name
	)

Create a New Task to the calling process. Upon success, the created task runs on its own stack, as part of the calling process context. Task termination must be achieved by calling STB_OSDestroyTask()

Parameters

function	task entry point
param	user defined parameter passed when task is started
stack	stack size
priority	task priority, min 0, max 15
name	task name

Returns: handle of task

void STB_OSDeleteMutex ( void * mutex )

Delete a mutex.

Parameters

mutex_var The mutex to delete.

void STB_OSDeleteSemaphore ( void * semaphore )

Delete a Semaphore.

Parameters

semaphore Semaphore handle.

Returns: TRUE for success, FALSE upon failure.

BOOLEAN STB_OSDestroyQueue ( void * queue )

Destroy Queue.

Parameters

queue Unique Queue Handle Identifier Variable Address.

Returns: TRUE for success, FALSE upon failure.

U32BIT STB_OSGetClockDiff ( U32BIT timestamp )

Get Difference between Given Time and Current Time.

Parameters

timestamp Given Clock Value to Compare Against.

Returns: Time Difference in MilliSeconds.

U32BIT STB_OSGetClockGMT ( void )

Returns the system time in seconds.

Returns: system time in seconds

U32BIT STB_OSGetClockMilliseconds ( void )

Get Current Computer Clock Time.

Returns: Time in Milliseconds.

U32BIT STB_OSGetClockRTC ( void )

Returns the current time in seconds. This is calculated by using the set UTC time and adding the difference between the system boot time when it was set (sync_time) and the system boot time now.

Returns: The current time in seconds since midnight 1-1-1970.

void* STB_OSGetCurrentTask ( void )

Returns the handle of the current task.

Returns: Handle of current task

void STB_OSInitCountSemaphore	(	void *	semaphore,
		U32BIT	value
	)

Initialise a counting semaphore.

Parameters

semaphore	Semaphore handle.
value	New value for semaphore.

Warning: This is a very dangerous function, and should be used very carefully.

void STB_OSMutexLock ( void * mutex )

Lock a mutex (a.k.a. 'enter', 'wait' or 'get').

Parameters

mutex_var The mutex to lock.

void STB_OSMutexUnlock ( void * mutex )

Unlock a mutex (a.k.a. 'leave', 'signal' or 'release')

Parameters

mutex_var The mutex to unlock.

BOOLEAN STB_OSReadQueue	(	void *	queue,
		void *	msg,
		U16BIT	msg_size,
		U16BIT	timeout
	)

Read a message from a queue.

Parameters

queue	Queue Handle
data	User's Read Message Buffer Start Address.
msg_size	Message Packet Size in Bytes.
timeout	timeout in milliseconds

Returns: TRUE for success, FALSE upon failure.

void STB_OSRegisterCallback ( void(*)(BOOLEAN, U16BIT, U16BIT, void *, U32BIT) func )

Register the function that will be called when STB_OSSendEvent is used.

Parameters

func	callback function

void STB_OSSemaphoreSignal ( void * semaphore )

Signal a Semaphore to Release it by decrementing its counter.

Parameters

semaphore Semaphore handle.

void STB_OSSemaphoreWait ( void * semaphore )

Wait on Semaphore Indefinity or Until Released.

Parameters

semaphore Semaphore handle.

Returns: TRUE for success, FALSE upon failure.

BOOLEAN STB_OSSemaphoreWaitTimeout	(	void *	semaphore,
		U16BIT	timeout
	)

Wait on Semaphore for Set Time Period in an Attempt to Acquire.

Parameters

semaphore	Semaphore handle.
timeout	Time Period to Wait in milliseconds.

Returns: TRUE for success, FALSE upon failure.

void STB_OSSendEvent	(	BOOLEAN	repeat,
		U16BIT	event_class,
		U16BIT	event_type,
		void *	data,
		U32BIT	data_size
	)

Send an event by calling the registered callback function.

Parameters

repeat	TRUE if the event is a repeat of the last event
event_class	event class
event_type	event identifier.
data	pointer to the data associated with the event
data_size	size of the data pointed by data_pointer

void STB_OSSetClockGMT ( U32BIT num_seconds )

Set the time in seconds since midnight 1-1-1970 in GMT.

Parameters

num_seconds time in seconds

void STB_OSSetClockRTC ( U32BIT num_seconds )

Set the local time in seconds since midnight 1-1-1970.

Parameters

num_seconds time in seconds

void STB_OSTaskDelay ( U16BIT timeout )

Delay Task for Specifed Time Period.

Parameters

timeout delay in milliSeconds.

U8BIT STB_OSTaskPriority	(	void *	task,
		U8BIT	priority
	)

Set a New Priority Level for Specified Task.

Parameters

task	task whose priority is to be changed
priority	new priority

Returns: Old task priority

BOOLEAN STB_OSWriteQueue	(	void *	queue,
		void *	msg,
		U16BIT	msg_size,
		U16BIT	timeout
	)

Write a message to the queue.

Parameters

queue	Queue Handle
data	message to be queued
msg_size	size of message in bytes
timeout	timeout in milliseconds

Returns: TRUE for success, FALSE upon failure.

Macros

Functions

Detailed Description

Function Documentation