📄 system.c
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/*****************************************************************************
*
* component :
*
* module name : system.c
* date :
*
* subcomponent:
*
******************************************************************************
*
* function :
*
*
* description :
*
******************************************************************************
*
*
* dependencies:
*
* uC/OS-II The Realtime KERNEL by Jean J. Labrosse
*
* author : Kenneth Blake - Oberon Data och Elektronik AB
* ken@oberon.se www.oberon.se
* history :
*
*
******************************************************************************/
#include "D:\testUCOS\tic6416\test6416\SOURCE\includes.h"
//#include <dma.h>
void minit(void);
#pragma DATA_SECTION( ClockTaskStack ,"STACK_AREA" );
#pragma DATA_SECTION( ForSystemSupervisorStack ,"STACK_AREA" );
#pragma DATA_SECTION( OSTaskIdleStk ,"STACK_AREA" );
#pragma DATA_SECTION( TaskOneStack ,"STACK_AREA" );
#pragma DATA_SECTION( TaskTwoStack ,"STACK_AREA" );
#pragma DATA_SECTION( TaskThreeStack ,"STACK_AREA" );
#pragma DATA_SECTION( TaskFourStack ,"STACK_AREA" );
#pragma DATA_SECTION( TaskFiveStack ,"STACK_AREA" );
far OS_STK OSTaskIdleStk[OS_TASK_IDLE_STK_SIZE]; /* Idle task stack */
INT32U ClockTaskStack [CLOCK_TASK_STACK_SIZE ] ;
INT32U ForSystemSupervisorStack [SYSTEM_SUPERVISOR_TASK_STACK_SIZE ] ;
INT32U TaskOneStack [TASK_ONE_STACK_SIZE ] ;
INT32U TaskTwoStack [TASK_TWO_STACK_SIZE ] ;
INT32U TaskThreeStack [TASK_THREE_STACK_SIZE ] ;
INT32U TaskFourStack [TASK_FOUR_STACK_SIZE ] ;
INT32U TaskFiveStack [TASK_FIVE_STACK_SIZE ] ;
KERNEL_S KERNEL;
volatile unsigned int Volatile_Value_Of_Illegal_Interrupt ;
volatile unsigned int
Always_Enabled_Interrupts ,
Normally_Enabled_Interrupts;
SEMAPHORE_S *Semaphore ;
MAILBOX_S *MailBox ;
QUEUE_S *Queue ;
/******************************************************************************
*
* function : TimerOneTick(void )
* description : Timer 1 tick interrupt handler
*
* Ticks every millisecond
*
* dependencies: Setup in the interrupt vector : c6inthnd.asm
* os_cpu_a.asm
*
* Input : None
* Output : None
* history :
* return value :
* Cost :
*
******************************************************************************/
/*------------------------------**
** Timer one interrupt handler **
**------------------------------*/
/* do not declare this with the
ordinary interrupt keyword
or #pragma interrupt () ; */
void
TimerOneTick(void) /* Interrupt 15, System Timer One millisecond */
{
CPU_Save() ; /* CPU runtime saving of task registers */
OSIntEnter() ;
OSMboxPost( MailBox->ForTheClockInterrupt, (void *)1);
OSIntExit() ;
/* CSR = CSR & (unsigned int)-2;*/
CPU_Restor() ; /* CPU runtime popping of task registers */
}
/******************************************************************************
*
* function : System__Hardware__Initialisation
* description :
*
* Initializes the hardware parts of the system
* So that the KERNEL may be built and started
* System activation is the process of bringing a software system
* to its operational state. It includes systematic activities
* such as obtaining operational (configuration) data and
* synchronizing with other components before starting full
* operation. For example,after adding a new node into a computer
* communication network, the node may first have to synchronize
* with other nodes to obtain its routing data. Deactivation of
* the system or individual components also needs to be done
* systematically. For example, the various resources used
* by a component must be returned when the component is
* deactivated.
*
* System_activation(void) (start up)
* Deactivation(void)
* InitialisationCheck(void)
* ColdStart(void)
* WarmStart(void)
* HotStart(void)
*
*
* dependencies:
* Input :
* Output :
* history :
* return value :
* Cost :
*
******************************************************************************/
/*--------------------------------------------**
** **
** S Y S T E M I N I T I A L I S A T I O N **
** **
**--------------------------------------------*/
void System__Hardware__Initialisation(void)
{
Normally_Enabled_Interrupts = 0 ;
//CPU_Processor_Setup TO set the cpu timer intrupt for producing the TimerOneTick intruption
//USER CODE
//end user code
Always_Enabled_Interrupts = 0 ;
// ICR = 0 ; /* Clear all strange interrupts, if any */
Normally_Enabled_Interrupts =(1 << CPU_INT_NMI ) ;//user must change the value
//to EN the cpu IER register acording to the diffrent cpu
}
/******************************************************************************
*
* function : SystemBuild__CreateQueues( )
* description :
* Builds the necessary Queues
*
* dependencies:
* Input :
* Output :
* history :
* return value :
* Cost :
*
******************************************************************************/
void SystemBuild__CreateQueues(void)
{
/*-----------------------**
** M E S S A G E **
** H A N D L E R **
**-----------------------*/
// user code such as Queue->ForMessageHandler_Input.Event =
//OSQCreate( &Queue->ForMessageHandler_Input.QueueElement[0], QUEUE_MAX_SIZE );
}
/******************************************************************************
*
* function : SystemBuild__CreateMailBoxes
* description :
* Builds the necessary MailBoxes
*
* dependencies:
* Input :
* Output :
* history :
* return value :
* Cost :
*
******************************************************************************/
void SystemBuild__CreateMailBoxes(void)
{
/*---------------------------------------------------------**
** Create the one item Mailbox for the Clock interrupt **
**---------------------------------------------------------*/
// user code such as MailBox->ForTheClockInterrupt = OSMboxCreate((void *)0); /* Clock Mailbox */
// user code such as MailBox->ForCommunicationBetweenTask4_And_5 = OSMboxCreate((void *)0);
}
/******************************************************************************
*
* function : SystemBuild__CreateSemaphores
* description :
* Builds the necessary Semaphores
*
* dependencies:
* Input :
* Output :
* history :
* return value :
* Cost :
*
******************************************************************************/
void SystemBuild__CreateSemaphores(void)
{
// user code such as Semaphore->ForTaskThree = OSSemCreate(1) ;
}
/******************************************************************************
*
* function : System__KERNEL__Build
* description :
*
* Initializes the KERNEL with the resources
* that are needed.
*
* dependencies:
* Input :
* Output :
* history :
* return value :
* Cost :
*
******************************************************************************/
/**----------------------------
** **
** S Y S T E M B U I L D **
** **
**----------------------------*/
void System__KERNEL__Build(void)
{
/*---------------------------**
** Initialize the KERNEL **
**---------------------------*/
OSInit();
Semaphore = &KERNEL.Semaphore ;
MailBox = &KERNEL.MailBox ;
Queue = &KERNEL.Queue ;
SystemBuild__CreateQueues() ;
SystemBuild__CreateMailBoxes() ;
SystemBuild__CreateSemaphores() ;
/*--------------------------------------------**
** Declare System Tasks (processes) **
**--------------------------------------------*/
//user code to create task such as
//create one
/*****************************************
KERNEL.Stack.ForClock.StackBuffer = &ClockTaskStack[0] ;
OSTaskCreate(ClockTask,
(void *)NO_DATA_POINTER,
(void *)&KERNEL.Stack.ForClock.StackBuffer[CLOCK_TASK_STACK_SIZE-1],
CLOCK_TASK_PRIORITY);
*******************************************/
//create two
/******************************************
KERNEL.Stack.ForSystemSupervisor.StackBuffer = &ForSystemSupervisorStack [0];
OSTaskCreate(SystemSupervisor,
(void *)NO_DATA_POINTER,
(void *) &KERNEL.Stack.ForSystemSupervisor.StackBuffer[SYSTEM_SUPERVISOR_TASK_STACK_SIZE-1],
SYSTEM_SUPERVISOR_PRIORITY);
*******************************************/
//create three
}
/******************************************************************************
*
* function : main
* description :
* System start after the initial assembly code
* that sets the first stack.
* The system build processes are called in sequence
* and the KERNEL is started.
* The Stack is only used before the KERNEL is started and
* is never again used.
* The OSStart never returns here
*
* dependencies:
* Input :
* Output :
* history :
* return value :
* Cost :
*
******************************************************************************/
void main(void)
{
CPU_Register_Initialisation(); // In OS_CPU_A.asmfiles//
// Initialise the processors registers with the define value
//begin user for initilation code such as dma_reset( )and so on
//USER CODE
//end user code for initilation
System__Hardware__Initialisation() ;//the main idea of this function is
//to initalate the sys timertick
System__KERNEL__Build( ) ;
/*-----------------------**
** S Y S T E M **
** S T A R T **
** Start the KERNEL **
** The system will **
** not return to **
** this function **
** again **
**-----------------------*/
OSStart();////excute the OSStartHighRdy() in this function /* Start multitasking */
}
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