d12drv.c

USB audio card 音效卡設計原理圖,說明及源碼

#include "D12drv.h"

void d12_init(void)
{ unsigned char intreg1,intreg2;
  
  out_cmd(0xd0);
  out_data(0x80);   //setaddressEnable
  
  out_cmd(0xd8);
  out_data(0x01);   //setepEnable
  
  out_cmd(0xf3);
  out_data(0x44);   //128 ISO out
  out_data(USB_FRQ); //setmode,desconect
  delay_time(50);
    
  out_cmd(0xf3);
  out_data(0x54);   //128 ISO out
  out_data(USB_FRQ); //setmode,reconect
  delay_time(50);
	
  out_cmd(0xf4);  //read int reg;
  intreg1=in_data();
  intreg2=in_data();
 }

void out_cmd(unsigned char data)
{COMMAND=data;
 delay_time(1);
}

void out_data(unsigned char data)
{DATA=data;
 delay_time(1);
}

unsigned char in_data()
{delay_time(1);
 return DATA;
 
}

void delay_time(unsigned short number)
{ unsigned short i;
   i=number;
for(;i>0;i--)
{
}
}