www.pudn.com > hf44b0_TEST.rar > extdma.c

#include  
#include "..\inc\44b.h" 
#include "..\inc\44blib.h" 
#include "..\inc\def.h" 
 
void _Zdma0XdreqHandshake(void); 
 
#define BUS8		(0) 
#define BUS16		(1) 
#define BUS32		(2) 
#define ENWAIT		(1) 
#define SRAMBE03	(1) 
 
//PG3 = DMAMODE0 
//PG4 = DMAMODE1 
//PE4 = nDMASTART 
//PE5 = reserved 
 
#define SET_XDREQ16()	rPDATG=(rPDATG&~(3<<3))|(0x1<<3) 
#define SET_XDREQ1()	rPDATG=(rPDATG&~(3<<3))|(0x2<<3) 
#define START_XDREQ()	{rPDATE=(rPDATE&~(1<<4))|(0x0<<4);\ 
			 rPDATE=(rPDATE&~(1<<4))|(0x1<<4);} 
 
 
 
//DMAMODE[1:0]:	01b= one time request    
//		10b= 16 time requests 
 
#define B1_Tacs		(0x0)	//0clk 
#define B1_Tcos		(0x0)	//0clk 
#define B1_Tacc		(0x1)	//2clk 
#define B1_Tcoh		(0x0)	//0clk 
#define B1_Tah		(0x0)	//0clk 
#define B1_Tacp		(0x0)	//2clk 
#define B1_PMC		(0x0)	//no page mode 
 
 
 
volatile int isZdma0Done; 
 
 
 
 
void __irq IsrZdma0Done(void) 
{ 
    rI_ISPC=BIT_ZDMA0; 
    isZdma0Done=1; 
} 
 
 
 
 
void Test_ZDma0Xdreq(void) 
{ 
        
    rBWSCON=rBWSCON&(~0xf0)|(BUS16<<4); 
    rBANKCON1=((B1_Tacs<<13)+(B1_Tcos<<11)+(B1_Tacc<<8)+(B1_Tcoh<<6)+(B1_Tah<<4)+(B1_Tacp<<2)+(B1_PMC)); 
 
    rINTMSK|=BIT_GLOBAL; 
    pISR_ZDMA0=(U32)IsrZdma0Done; 
    rINTMSK=~(BIT_GLOBAL|BIT_ZDMA0); 
 
    rPCONF=rPCONF&(~(0xf<<6))|(0xf<<6);//PF3=nXDACK0,PF4=nXDREQ0 
 
    rPCONE=rPCONE&(~(3))|(3);	    //PE0=CLKOUT 
 
    rPDATG=rPDATG&(3<<3); 
    rPCONG=rPCONG&~(0xf<<6)|(5<<6); //PG3,4=OUTPUT 
    rPDATE=rPDATE&~(1<<4)|(1<<4);   //PE4=H 
    rPCONE=rPCONE&~(3<<8)|(1<<8);   //PE4=OUTPUT 
     
    _Zdma0XdreqHandshake(); 
 
 
} 
void _Zdma0XdreqHandshake(void) 
{ 
    int i; 
    static U16 bufDst[16]; 
    static U16 bufSrc[16]; 
 
    Uart_Printf("[ZDMA0,HandShake,unit,16bit Test]\n"); 
 
    for(i=0;i<16;i++){bufSrc[i]=i;bufDst[i]=0;} 
     
    isZdma0Done=0; 
    rNCACHBE0=( ( (((unsigned)bufDst+16*4)>>12) +1 )<<16 )|((unsigned)bufDst>>12); 
 
    rINTMSK=~(BIT_GLOBAL|BIT_ZDMA0); 
    rZDISRC0=(U32)bufSrc|(1<<30)|(1<<28); // half-word,inc 
    rZDIDES0=(U32)bufDst|((U32)2<<30)|(1<<28);  // normal,inc 
    rZDICNT0=32|(0x0<<30)|(0x0<<28)|(0x1<<26)|(0x2<<24)|(0x3<<22)|(0x1<<21)|(0x1<<20); 
    	//nXDREQ0,handshake,unit,terminal_int,auto-reload,enable DMA, 
    rZDCON0=0x0; // nXDREQ0 enable,CMD=no_command. 
 
    SET_XDREQ16(); 
    START_XDREQ(); 
     
    while(isZdma0Done==0);//Uart_Printf("ZDCCNT0=%08x        \r",rZDCCNT0); 
 
    for(i=0;i<16;i++)Uart_Printf("%x,",*((U16 *)bufDst+i)); 
    Uart_Printf("\n"); 
 
    Cache_Flush(); 
    rNCACHBE0=0; 
 
}