main.c

使用spi接口实现主

#include <cdefBF533.h>

 

void Init_PLL(int MSEL)
{
	int new_PLL_CTL;
	
	*pPLL_DIV = 0x0005;
	asm("ssync;");
	
	
	new_PLL_CTL = (MSEL & 0x3f) << 9;		
//	new_PLL_CTL |= 0x1; //set DF pass CLKIN/2 to PLL
	
	// enable Wake-up from PLL event
	*pSIC_IWR |= 0xffffffff;

	if (new_PLL_CTL != *pPLL_CTL) 
	{
		*pPLL_CTL = new_PLL_CTL;
		asm("ssync;");
		asm("idle;");
	}
}//end Init_PLL

 
section("SDRAM") unsigned char rcv_data[40960];
  
section("SDRAM") unsigned char send_data[40960];


#define TESTNUM 100 

main()
{
    
	unsigned char temp;
	
	
	Init_PLL(22); 
    int i = TESTNUM;
   
	while(i--)
	{
		send_data[i] = i;
	}
	
	    		   	
	    Drv_config_to_master();
  
	    Drv_config_master_write();
	
	    Drv_SPI_enable();
	    
	 for (i=0; i<TESTNUM-1; i++)  
	     {   
	         *pSPI_TDBR = send_data[i];
	    
             while(*pSPI_STAT & TXS);
	     }
        *pSPI_TDBR = send_data[i];   	
	    Drv_SPI_disable();
	    
        printf("send data success\n");
     	
        Drv_Config_master_read();
    	
	    Drv_SPI_enable();
	    
//	    for (i=0x60000000; i>0; i--)
//	    asm("nop;");

	    Drv_clean_revbuf();

    for (i=0; i<TESTNUM; i++)  	
    	{
    		
    	    while(!(*pSPI_STAT & RXS));
    	
    	    rcv_data[i] = *pSPI_RDBR;
    	}
    	
    	
    for (i=0; i<TESTNUM; i++)	
    	if (rcv_data[i] != send_data[i])
    	   {
    	   	   printf("data error\n");
    	   	   printf("%10d\n", i);
    	   	   printf("%10x\n", rcv_data[i]);
    	   	   printf("%10x\n", send_data[i]);
    	   }
    	   
    while(1);  
}