ch375_drv.c

用at91sam7s64+ucos写的mp3播放程序

#include "AT91SAM7S64.h"
#include "Board.h"
#include "type.h"

#include "dbgu.h"

#include "spi.h"
#include "port.h"
#include "ch375_drv.h"



#define  CMD_REG    0x7f
#define  DATA_REG   0x7e


/*
//----------------------------------------------------------------------
INT8U Usb_Interrupt()
{
   INT8U u8Status;
   
   while(1 == port_GetINT(CH375_INTRQ));
   
   port_SendData(CMD_REG, 0x22);
   delay(0x0fff);
   
   u8Status = port_ReadData(DATA_REG);
   return u8Status; 
}


//----------------------------------------------------------------------
void CH375_Init()
{
    INT8U  temp;
   
CHRST:  port_SendData(CMD_REG, 0x05);   //reset
    
    for(temp=0; temp<10; temp++)
    {
       delay(0xffff);
    }
   
    port_SendData(CMD_REG, 0x06);       //check exist
    port_SendData(DATA_REG, 0xaa);      //send data
    temp = port_ReadData(DATA_REG);     //~data

    if(temp == 0x55)
    {
       DBGU_Print("test chip successful\n");
    }
    else
    {
       DBGU_Print("test chip failed\n");
       goto CHRST;
    }
    
    port_SendData(CMD_REG, 0x15);   //set usb mode
    port_SendData(DATA_REG, 0x06);     
}


//----------------------------------------------------------------------
INT8U Udsik_Init()
{ 
   INT8U u8Status;
   
   port_SendData(CMD_REG,0x22);
   u8Status = port_ReadData(DATA_REG);  
   
   if(u8Status == 0x16)
   {
     return u8Status;
   }

   port_SendData(CMD_REG,0x51);
   
   for(u8Status=0; u8Status<10; u8Status++)
   {
      delay(0xffff);
   }
   
   u8Status = Usb_Interrupt();
    
   if(u8Status != 0x14)  //not success
   {
     return u8Status;      
   }
   else
   {
     DBGU_Print("disk init successful\n");
   }
   
   port_SendData(CMD_REG, 0x53);
   u8Status = Usb_Interrupt();
   if(u8Status != 0x14)
   {
      port_SendData(CMD_REG, 0x53);
      u8Status = Usb_Interrupt();
   }
   else
   {
      DBGU_Print("disk size successful\n");
   }
   if(u8Status != 0x14)
   {
      return u8Status;
   }
      
   return 0;   //success
    
}


//----------------------------------------------------------------------
INT8U Udisk_ReadSector(INT32U u32Addr, INT8U *buffer)
{ 
   INT8U count;
   INT8U num;
   
  RESECTOR: port_SendData(CMD_REG, 0x54);
    
   port_SendData(DATA_REG, (INT8U)(u32Addr));
   port_SendData(DATA_REG, (INT8U)(u32Addr >> 8));
   port_SendData(DATA_REG, (INT8U)(u32Addr >> 16));
   port_SendData(DATA_REG, (INT8U)(u32Addr >> 24));
   port_SendData(DATA_REG, 1);
    
   for(num=0; num<8; num++)
   {
      count = Usb_Interrupt();
    
      if(count == 0x1d)  //
      {
        port_SendData(CMD_REG, 0x28);
        
        delay(0x0fff);
        
      //  port_SetAddress(DATA_REG);
        
        count = port_ReadData(DATA_REG);//port_ReadDataNoAdd();
    
        while(count --)
        {
           *buffer ++ = port_ReadData(DATA_REG);
        }
        
        delay(0x0fff);
        port_SendData(CMD_REG, 0x55); 
      }
      else
      {
        DBGU_Print("read sector failed\n");
        goto RESECTOR;
      }
 }
 
 count = Usb_Interrupt();
 if(count == 0x14)
 {
   return 0;
 }
   
 return count;   
}

*/