ad9852.txt.txt

AD9852驱动

[file head]:
#include <iom16v.h> 
#include "AD9852.h" 

//送入9852的数据缓冲区，初始化为控制寄存器值，使能PLL，5倍频，外部刷新 
unsigned char AD9852_Data[]={0x10,0x45,0x00,0x60,0x00,0x00}; 

void delay_us(unsigned int us) 
{ 
while (--us); 
{ 
us++; 
us--; 
} 
} 

void AD9852_DataPost(unsigned char Addr, unsigned char *pDat, unsigned char DataLen) 
{ 
unsigned char i=0; 

AD9852_Set_IORESET(); 
asm("nop"); 
AD9852_Clr_IORESET(); 

i=Addr; 
AD9852_ByteSend(i); 

for (i=0;i<DataLen;i++) 
{ 
AD9852_ByteSend(pDat[i]); 
} 

AD9852_Set_IOUD(); 
asm("nop"); 
AD9852_Clr_IOUD(); 
} 

void AD9852_Init() 
{ 

AD9852_CTRL_DDR |= ((0x01<<AD9852_IORESET)|(0x01<<AD9852_SCLK)|(0x01<<AD9852_MasterReset)|(0x01<<AD9852_CLKPOWER)|(0x01<<AD9852_IOUD)|(0x01<<AD9852_SDIO)); 

AD9852_CTRL_PORT &amt;= (~((0x01<<AD9852_CLKPOWER)|(0x01<<AD9852_IOUD))); 
AD9852_CTRL_PORT |= ((0x01<<AD9852_IORESET)|(0x01<<AD9852_SCLK)|(0x01<<AD9852_MasterReset)); 

delay_us(500); 

AD9852_Clr_MasterRes
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... ...
et(); //AD9852复位 
asm("nop"); 
AD9852_Set_MasterReset(); 
asm("nop"); 
AD9852_Clr_MasterReset(); 
asm("nop"); 

AD9852_DataPost(0x07,AD9852_Data,4); //送入初始控制字 
delay_us(1000); 
AD9852_Set_CLKPOWER(); //启动晶振 
} 

int main () 
{ 
DDRC = 0xff; 
PORTC = 0xff; 


delay_us(2000); 
delay_us(2000); 

AD9852_Init(); //AD9852初始化 
AD9852_DataPost(0x07,AD9852_Data,4); //送入初始控制字 
delay_us(200); 

AD9852_Data[0]=0x0f; //满幅 
AD9852_Data[1]=0xff; 
AD9852_DataPost(0x08,AD9852_Data,2); 
delay_us(200); 

AD9852_Data[0]=0x19; //10M 
AD9852_Data[1]=0x99; 
AD9852_Data[2]=0x99; 
AD9852_Data[3]=0x99; 
AD9852_Data[4]=0x99; 
AD9852_Data[5]=0x99; 
AD9852_DataPost(0x02,AD9852_Data,6); 
delay_us(200); 
while (1); 
return 0; 
}