/********************************************************

*

*   北京四维卓信电子有限公司

*   http://www.openadsp.com

*

*  【OpenADSP开源社区】

* http://www.openadsp.com/bbs/

*

********************************************************/

#include <cdef21489.h>

#include <def21489.h>

#include <sru.h>

#include <signal.h>

#include <sysreg.h>

#include "PBLED_test.h"

int main(void)

{

InitPLL();

Config_SRU_LEDS();

Setup_Ints();

while(1);

}

void InitPLL(void)

{

int n;

*pPMCTL = (PLLM16|PLLD4|DIVEN);

*pPMCTL |= PLLBP;

*pPMCTL ^= DIVEN;

for(n = 0; n < 10000; n++ )

{

asm("nop;");

}

*pPMCTL ^= PLLBP;

    

}

void Config_SRU_LEDS(void)

{

SRU(FLAG4_O,DPI_PB06_I); //DPI => We can use flags.

SRU(FLAG5_O,DPI_PB07_I); //DPI => We can use flags.

SRU(FLAG6_O,DPI_PB08_I); //DPI => We can use flags.

SRU(FLAG7_O,DPI_PB13_I); //DPI => We can use flags.

}

void LED0_ON(void)

{

SRU(HIGH,DPI_PBEN06_I);

}

void LED1_ON(void)

{

SRU(HIGH,DPI_PBEN07_I);

}

void LED2_ON(void)

{

SRU(HIGH,DPI_PBEN08_I);

}

void LED3_ON(void)

{

SRU(HIGH,DPI_PBEN13_I);

}

void LED0_OFF(void)

{

SRU(LOW,DPI_PBEN06_I);

}

void LED1_OFF(void)

{

SRU(LOW,DPI_PBEN07_I);

}

void LED2_OFF(void)

{

SRU(LOW,DPI_PBEN08_I);

}

void LED3_OFF(void)

{

SRU(LOW,DPI_PBEN13_I);

}

void Config_SRU_INTS(void)

{

    SRU(LOW,DAI_PB15_I); //assign pin buffer 15 low so it is an input

   SRU(LOW,DAI_PB16_I);     //assign pin buffer 16 low so it is an input

    SRU(LOW,DAI_PB19_I); //assign pin buffer 19 low so it is an input

    SRU(LOW,DAI_PB20_I);     //assign pin buffer 20 low so it is an input

    

    SRU(DAI_PB15_O,MISCA0_I); //route so that DAI pin buffer 15 connects to MISCA1

    SRU(DAI_PB16_O,MISCA1_I); //route so that DAI pin buffer 16 connects to MISCA2

    SRU(DAI_PB19_O,MISCA2_I); //route so that DAI pin buffer 19 connects to MISCA1

    SRU(DAI_PB20_O,MISCA3_I); //route so that DAI pin buffer 20 connects to MISCA2

    

    SRU(LOW,PBEN15_I); //assign pin 15 low so it is an input

    SRU(LOW,PBEN16_I); //assign pin 16 low so it is an input

    SRU(LOW,PBEN19_I); //assign pin 19 low so it is an input

    SRU(LOW,PBEN20_I); //assign pin 20 low so it is an input

}

//////////////////////////////////////////////////////////////////////////////

// void Setup_Ints(void)

//

// PURPOSE: Configure the system to accept the push buttons as inputs

//

//////////////////////////////////////////////////////////////////////////////

void Setup_Ints(void)

{

Config_SRU_INTS();

    (*pDAI_IRPTL_PRI) = (SRU_EXTMISCA0_INT  | SRU_EXTMISCA1_INT | SRU_EXTMISCA2_INT  | SRU_EXTMISCA3_INT );    //unmask individual interrupts

    (*pDAI_IRPTL_RE)  = (SRU_EXTMISCA0_INT  | SRU_EXTMISCA1_INT | SRU_EXTMISCA2_INT  | SRU_EXTMISCA3_INT );    //make sure interrupts latch on the rising edge

//Set up interrupt priorities

    sysreg_bit_set(sysreg_IMASK, DAIHI); //DAIHI//make DAI interrupts high priority

    interrupt(SIG_DAIH,DAIroutine);

}

//////////////////////////////////////////////////////////////////////////////

// void DAIroutine(int sig_int)

//

// PURPOSE: ISR for pushbutton 1,2,3,4

//

//////////////////////////////////////////////////////////////////////////////

void DAIroutine(int sig_int)

{

int iTest;

    iTest = (*pDAI_IRPTL_H); // reading pDAI_IRPTL_H clears the latched interrupt.

    if( SRU_EXTMISCA0_INT == iTest )

    {

LED0_ON();

LED1_ON();

LED2_ON();

LED3_ON();

    }

    else if( SRU_EXTMISCA1_INT == iTest )

    {

LED0_OFF();

LED1_ON();

LED2_OFF();

LED3_ON();

    }

    else if( SRU_EXTMISCA2_INT == iTest )

    {

LED0_ON();

LED1_OFF();

LED2_ON();

LED3_OFF();

    }

    else if( SRU_EXTMISCA3_INT == iTest )

    {

LED0_OFF();

LED1_OFF();

LED2_OFF();

LED3_OFF();

    }

}