bsp.c

把uCOS移植到三星的44B0的CPU上面

/*
*********************************************************************************************************
*                                            Atmel AT91 SAM7
*                                         Board Support Package
*
*                              (c) Copyright 2004, Micrium, Inc., Weston, FL
*                                          All Rights Reserved
*
*
* File : BSP.C
* By   : Jean J. Labrosse
*********************************************************************************************************
*/

#include <includes.h>

/*
*********************************************************************************************************
*                                              CONSTANTS
*********************************************************************************************************
*/

#define  BSP_UNDEF_INSTRUCTION_VECTOR_ADDR   (*(INT32U *)0x0C000004L)
#define  BSP_SWI_VECTOR_ADDR                 (*(INT32U *)0x0C000008L)
#define  BSP_PREFETCH_ABORT_VECTOR_ADDR      (*(INT32U *)0x0C00000CL)
#define  BSP_DATA_ABORT_VECTOR_ADDR          (*(INT32U *)0x0C000010L)
#define  BSP_IRQ_VECTOR_ADDR                 (*(INT32U *)0x0C000018L)
#define  BSP_FIQ_VECTOR_ADDR                 (*(INT32U *)0x0C00001CL)

#define  BSP_IRQ_ISR_ADDR                    (*(INT32U *)0x0C000038L)
#define  BSP_FIQ_ISR_ADDR                    (*(INT32U *)0x0C00003CL)

/*
*********************************************************************************************************
*                                               DATA TYPES
*********************************************************************************************************
*/

typedef  void (*BSP_PFNCT)(void);

/*
*********************************************************************************************************
*                                              PROTOTYPES
*********************************************************************************************************
*/

static  void  BSP_DummyISR_Handler(void);

static  void  BSP_IntCtrlInit(void);

//static  void  Tmr_TickInit(void);
//static  void  Tmr_TickISR_Handler(void);
//static  void  EXT_Int3Init (void);
//static  void  EXT_INT3_ISR_Handler (void);

BSP_PFNCT ISR_Handler[32];

/*
*********************************************************************************************************
*                                           DUMMY IRQ HANDLER
*
* Description : This function is called to handle invalid IRQs
*
* Arguments   : none
*********************************************************************************************************
*/

static  void  BSP_DummyISR_Handler (void)
{
    //AT91C_BASE_AIC->AIC_IVR = 0;              /* Debug variant of vector read (protect mode is used)   */
}


/*
*********************************************************************************************************
*                                          BSP INITIALIZATION
*
* Description : This function should be called by your application code before you make use of any of the
*               functions found in this module.
*
* Arguments   : none
*********************************************************************************************************
*/

void  BSP_Init (void)
{
    BSP_IntCtrlInit();                               /* Initialize the Interrupt Controller            */
    //Tmr_TickInit();                                  /* Initialize uC/OS-II's Tick Rate                */
	//EXT_Int3Init();
   // Uart1Init(0,115200);
    //Uart0Init(0,115200);
    //NetInit();
   // LcdInit();
   // LED_Init();                                      /* Initialize the I/Os for the LEDs               */
}


/*
*********************************************************************************************************
*                                    INITIALIZE THE INTERRUPT CONTROLLER
*
* Description : This function is called to disable ALL interrupts.
*
* Arguments   : none
*********************************************************************************************************
*/

static  void  BSP_IntCtrlInit (void)
{
    INT16U  i;

    BSP_IRQ_VECTOR_ADDR               =  0xE59FF018;               /* LDR PC,[PC,#0x18] instruction    */
    BSP_IRQ_ISR_ADDR                  =  (INT32U)OS_CPU_IRQ_ISR;   /* IRQ exception vector address     */

    BSP_FIQ_VECTOR_ADDR               =  0xE59FF018;               /* LDR PC,[PC,#0x18] instruction    */
    BSP_FIQ_ISR_ADDR                  =  (INT32U)OS_CPU_FIQ_ISR;   /* FIQ exception vector address     */

    BSP_UNDEF_INSTRUCTION_VECTOR_ADDR =  0xEAFFFFFE;               /* Jump to itself                   */
    BSP_SWI_VECTOR_ADDR               =  0xEAFFFFFE;
    BSP_PREFETCH_ABORT_VECTOR_ADDR    =  0xEAFFFFFE;
    BSP_DATA_ABORT_VECTOR_ADDR        =  0xEAFFFFFE;
   // BSP_FIQ_VECTOR_ADDR               =  0xEAFFFFFE;
                                                                   /* - END CODE RUNNING OUT OF RAM -- */
	rINTCON = 0x00000007;
	rINTMOD = 0x00000000;
	rI_ISPC = rINTPND;
    //AT91C_BASE_AIC->AIC_EOICR         =  0x00000000;               /* End-of-interrupt command         */
	rINTCON = 0x00000004;
	rINTMSK = 0x03FFFFFF;
    for (i = 0; i < 32; i++) {                                     /* Disable all ISRs                 */
        ISR_Handler[i]=BSP_DummyISR_Handler;
    }
}

/*
*********************************************************************************************************
*                                          DISABLE ALL INTERRUPTS
*
* Description : This function is called to disable ALL interrupts.
*
* Arguments   : none
*********************************************************************************************************
*/

void  BSP_IntDisAll (void)
{
	rINTMSK = 0x03FFFFFF;
}

/*
*********************************************************************************************************
*                                         BSP INITIALIZATION
*
* Description : This function should be called by your application code before you make use of any of the
*               functions found in this module.
*
* Arguments   : none
*********************************************************************************************************
*/

void  LED_Init (void)
{
    //AT91C_BASE_PIOA->PIO_PER  = BSP_LED2; /* Enable register          */
    //AT91C_BASE_PIOA->PIO_OER  = BSP_LED2; /* Output enable            */
    //AT91C_BASE_PIOA->PIO_IDR  = BSP_LED2;
    //LED_Off(BSP_LED_ALL);                                                  /* Turn OFF all the LEDs    */
}

/*
*********************************************************************************************************
*                                             LED ON
*
* Description : This function is used to control any or all the LEDs on the board.
*
* Arguments   : led    is the number of the LED to control
*                      0    indicates that you want ALL the LEDs to be ON
*                      1    turns ON LED1 on the board
*                      .
*                      .
*                      4    turns ON LED4 on the board
*********************************************************************************************************
*/

void  LED_On (INT8U led)
{
//AT91C_BASE_PIOA->PIO_CODR = BSP_LED2;
}

/*
*********************************************************************************************************
*                                             LED OFF
*
* Description : This function is used to control any or all the LEDs on the board.
*
* Arguments   : led    is the number of the LED to turn OFF
*                      0    indicates that you want ALL the LEDs to be OFF
*                      1    turns OFF LED1 on the board
*                      .
*                      .
*                      4    turns OFF LED4 on the board
*********************************************************************************************************
*/

void  LED_Off (INT8U led)
{
//AT91C_BASE_PIOA->PIO_SODR = BSP_LED2;
}

/*
*********************************************************************************************************
*                                             LED TOGGLE
*
* Description : This function is used to toggle any or all the LEDs on the board.
*
* Arguments   : led    is the number of the LED to toggle
*                      0    indicates that you want ALL the LEDs to be toggle
*                      1    toggles LED1 on the board
*                      .
*                      .
*                      4    toggles LED4 on the board
*********************************************************************************************************
*/

void  LED_Toggle (INT8U led)
{
#if 0
    switch (led) {
        case 0:
             if (AT91C_BASE_PIOA->PIO_ODSR & BSP_LED1) {
                 AT91C_BASE_PIOA->PIO_CODR = BSP_LED1;
             } else {
                 AT91C_BASE_PIOA->PIO_SODR = BSP_LED1;
             }
             if (AT91C_BASE_PIOA->PIO_ODSR & BSP_LED2) {
                 AT91C_BASE_PIOA->PIO_CODR = BSP_LED2;
             } else {
                 AT91C_BASE_PIOA->PIO_SODR = BSP_LED2;
             }
             if (AT91C_BASE_PIOA->PIO_ODSR & BSP_LED3) {
                 AT91C_BASE_PIOA->PIO_CODR = BSP_LED3;
             } else {
                 AT91C_BASE_PIOA->PIO_SODR = BSP_LED3;
             }
             if (AT91C_BASE_PIOA->PIO_ODSR & BSP_LED4) {
                 AT91C_BASE_PIOA->PIO_CODR = BSP_LED4;
             } else {
                 AT91C_BASE_PIOA->PIO_SODR = BSP_LED4;
             }
             break;

        case 1:
             if (AT91C_BASE_PIOA->PIO_ODSR & BSP_LED1) {
                 AT91C_BASE_PIOA->PIO_CODR = BSP_LED1;
             } else {
                 AT91C_BASE_PIOA->PIO_SODR = BSP_LED1;
             }
             break;

        case 2:
             if (AT91C_BASE_PIOA->PIO_ODSR & BSP_LED2) {
                 AT91C_BASE_PIOA->PIO_CODR = BSP_LED2;
             } else {
                 AT91C_BASE_PIOA->PIO_SODR = BSP_LED2;
             }
             break;

        case 3:
             if (AT91C_BASE_PIOA->PIO_ODSR & BSP_LED3) {
                 AT91C_BASE_PIOA->PIO_CODR = BSP_LED3;
             } else {
                 AT91C_BASE_PIOA->PIO_SODR = BSP_LED3;
             }
             break;

        case 4:
             if (AT91C_BASE_PIOA->PIO_ODSR & BSP_LED4) {
                 AT91C_BASE_PIOA->PIO_CODR = BSP_LED4;
             } else {
                 AT91C_BASE_PIOA->PIO_SODR = BSP_LED4;
             }
             break;
    }
#endif
}

/*
*********************************************************************************************************
*                                           IRQ ISR HANDLER
*
* Description : This function is called by OS_CPU_IRQ_ISR() to determine the source of the interrupt
*               and process it accordingly.
*
* Arguments   : none
*********************************************************************************************************
*/

void  OS_CPU_IRQ_ISR_Handler (void)
{
unsigned int i,temp,temp1;
	temp1=~rINTMSK;
	temp=rI_ISPR&temp1;
	for(i=0;i<26;i++)
		{
		if((temp>>i)&0x00000001)
			{
			if(ISR_Handler[i]!=(BSP_PFNCT)0)
				{
				(*ISR_Handler[i])();
				}
			rI_ISPC=0x01<<i;
			break;
			}
		}
}

/*
*********************************************************************************************************
*                                           FIQ ISR HANDLER
*
* Description : This function is called by OS_CPU_FIQ_ISR() to determine the source of the interrupt
*               and process it accordingly.
*