main.c

Arm Operate DMA for ads 1.2 IDE

#include "option.h"
#include "def.h"
#include "44b.h"
#include "44blib.h"

void Isr_Init(void);
void HaltUndef(void);
void HaltSwi(void);
void HaltPabort(void);      
void HaltDabort(void);
void __irq Zdma0Done(void);
void Zdma0Int(int srcAddr,int dstAddr,int length,int dw);

volatile int zdma0Done,zdma1Done;

void Main(void)
{
    unsigned char *src, *dst;
    int i;
    unsigned int memSum;

    rSYSCFG=SYSCFG_8KB;
#if (PLLON==1)
    ChangePllValue(PLL_M,PLL_P,PLL_S);
#endif

    Isr_Init();
    Port_Init();
    Uart_Init(0,115200);
    Uart_Select(0);
    Delay(0);  //calibrate Delay()
    Led_Display(7);
    Delay(1000);  //calibrate Delay()
    Led_Display(0);
    Delay(5000);  //calibrate Delay()
    Led_Display(7);
    Uart_Printf("\n start \n");

    rINTMSK|=BIT_GLOBAL;
    pISR_ZDMA0=(int)Zdma0Done;

    Uart_Printf("[ZDMA0 MEM2MEM Test]\n");

    dst=(unsigned char *)malloc(0x80000);
    src=(unsigned char *)malloc(0x80000);
	 
    rNCACHBE1=( ( (((unsigned)dst+0x100000)>>12) +1 )<<16 )|((unsigned)dst>>12);

    Uart_Printf("dst=%x,src=%x\n",(int)dst,(int)src);

/* Copy by word */
    memSum=0;
    for(i=0;i<0x80000;i++)
	*(src+i)=0x1;
    Zdma0Int((int)src,(int)dst,0x80000,2); //word
    for(i=0;i<0x80000;i++)
	memSum+=*(dst+i);
    Uart_Printf("memSum=%8x:",memSum);
    if(memSum==0x80000)Uart_Printf("O.K.\n");
    else Uart_Printf("ERROR!!!\n");

/* Copy by half-word */
    memSum=0;
    for(i=0;i<0x80000;i++)
	*(src+i)=2;
    Zdma0Int((int)src,(int)dst,0x80000,1); //half-word
    for(i=0;i<0x80000;i++)
	memSum+=*(dst+i);
    Uart_Printf("memSum=%8x:",memSum);
    if(memSum==0x100000)Uart_Printf("O.K.\n");
    else Uart_Printf("ERROR!!!\n");

/* Copy by byte */
    memSum=0;
    for(i=0;i<0x80000;i++)
	*(src+i)=3;
    Zdma0Int((int)src,(int)dst,0x80000,0); //byte
    for(i=0;i<0x80000;i++)
	memSum+=*(dst+i);
    Uart_Printf("memSum=%8x:",memSum);
    if(memSum==0x180000)Uart_Printf("O.K.\n");
    else Uart_Printf("ERROR!!!\n");
                             Uart_Printf("测试完毕＼ｎ");

    free(src);
    free(dst);
}


void Zdma0Int(int srcAddr,int dstAddr,int length,int dw)
//returns the checksum
{
    int time;
    zdma0Done=0;
    rINTMSK=~(BIT_GLOBAL|BIT_ZDMA0);
    rZDISRC0=srcAddr|(dw<<30)|(1<<28); // inc
    rZDIDES0=dstAddr|( 2<<30)|(1<<28); // inc
    rZDICNT0=length |( 2<<28)|(1<<26)|(3<<22)|(1<<20);
    //whole,unit transfer,int@TC,enable DMA
    rZDCON0=0x1; // start!!!  

    Timer_Start(3);//128us resolution	      
    while(zdma0Done==0);
    time=Timer_Stop();
    Uart_Printf("ZDMA0 %8x->%8x,%x:time=%f\n",srcAddr,dstAddr,length,time*128E-6);
    rINTMSK=BIT_GLOBAL;
}

void __irq Zdma0Done(void)
{
    rI_ISPC=BIT_ZDMA0;	//clear pending
    //rI_ISPC;		//is needed only when cache=on & wrbuf=on & BSFRD=0
    zdma0Done=1;
}



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

void Isr_Init(void)
{
    U32 i;
    
    pISR_UNDEF=(unsigned)HaltUndef;
    pISR_SWI  =(unsigned)HaltSwi;
    pISR_PABORT=(unsigned)HaltPabort;
    pISR_DABORT=(unsigned)HaltDabort;
    
     for(i=_RAM_STARTADDRESS;i<(_RAM_STARTADDRESS+0x20);i+=4)
    {
	*((volatile unsigned *)i)=0xEA000000+0x1FFE;
    }

    rINTCON=0x5;	  // Non-vectored,IRQ enable,FIQ disable    

    rINTMOD=0x0;	  // All=IRQ mode
    rINTMSK|=BIT_GLOBAL|BIT_EINT3;	  // All interrupt is masked.
}


void HaltUndef(void)
{
    Uart_Printf("Undefined instruction exception!!!\n");
    while(1);
}

void HaltSwi(void)
{
    Uart_Printf("SWI exception!!!\n");
    while(1);
}

void HaltPabort(void)
{
    Uart_Printf("Pabort exception!!!\n");
    while(1);
}

void HaltDabort(void)
{
    Uart_Printf("Dabort exception!!!\n");
    while(1);
}