main.c

silabs USB c8051f321 ,DAB USB dongle的资料,已经可以量产的东西

#include <c8051f320.h>                     // SFR declarations
#include "usb_api.h"

sbit 	SDA	=  P2^2 ;
sbit 	SCL	=  P2^3 ;
sbit    LED = P0^7;                        // LED='1' means ON


void Init_Sysclock (void);
void Init_Port (void);
void Ext_Interrupt_Init (void);

//-----------------------------------------------------------------------------
// Global VARIABLES
//-----------------------------------------------------------------------------


extern void Dab_Read_Register(int reg_addr,int *ptrdata);
extern void Dab_Write_Register(int reg_addr,int reg_data);


/*** [BEGIN] USB Descriptor Information [BEGIN] ***/
code const UINT USB_VID = 0x10C4;
code const UINT USB_PID = 0xEA61;
code const BYTE USB_MfrStr[] = {0x1A,0x03,'S',0,'i',0,'l',0,'i',0,'c',0,'o',0,'n',0,' ',0,'L',0,'a',0,'b',0,'s',0};	                     //	Manufacturer String
code const BYTE USB_ProductStr[] = {0x10,0x03,'U',0,'S',0,'B',0,' ',0,'A',0,'P',0,'I',0};	//	Product Desc. String
code const BYTE USB_SerialStr[] = {0x0A,0x03,'Z',0,'h',0,'o',0,'u',0};
code const BYTE USB_MaxPower = 15;            // Max current = 30 mA (15 * 2)
code const BYTE USB_PwAttributes = 0x80;      // Bus-powered, remote wakeup not supported
code const UINT USB_bcdDevice = 0x0100;       // Device release number 1.00
/*** [ END ] USB Descriptor Information [ END ] ***/




unsigned char access_data_stream;
BYTE usb_write_flag;
xdata unsigned char command_packet[8]; 
xdata BYTE buffer_storage[512];


extern void DabFM_Init(void);

void main (void) {

    int i;

    PCA0MD &= ~0x40;                    // WDTE = 0 (Disable watchdog timer)


    CLKMUL    = 0x80;
    for (i = 0; i < 200; i++);    // Wait 5us for initialization
    CLKMUL    |= 0xC0;
    while ((CLKMUL & 0x20) == 0);
    CLKSEL    = 0x02;
    OSCICN    = 0x83;


   Init_Port();

   USB_Clock_Start();                     // Init USB clock *before* calling USB_Init
   USB_Init(USB_VID,USB_PID,USB_MfrStr,USB_ProductStr,USB_SerialStr,USB_MaxPower,USB_PwAttributes,USB_bcdDevice);

   CLKSEL|=0x02;
   USB_Int_Enable();
   EA=0;
   Ext_Interrupt_Init();
   EA=1;

   //DabFM_Init();


   for(;;) {                            // spin forever


	if(access_data_stream==1)
	{
		   if(usb_write_flag == 1) // half of fifo
		   {

			usb_write_flag=0;
		    Block_Write(buffer_storage, 512);

	     	}

	}



   }//end for(;;);


}



//-----------------------------------------------------------------------------
// Ext_Interrupt_Init
//-----------------------------------------------------------------------------
//
// Return Value : None
// Parameters   : None
//
// This function configures and enables /INT0  (External Interrupts)
// as negative edge-triggered.
//
//-----------------------------------------------------------------------------
void Ext_Interrupt_Init(void)
{

	TCON=0x00;//INT 0  level triggered
    IT01CF    = 0x06;//P0.6作为外部中断INT0 active low;

    EX0 = 1;        // Enable /INT0 interrupts

}



//-----------------------------------------------------------------------------
// Init_Port
//
// Configure the Crossbar and GPIO ports.
// 
//
//-----------------------------------------------------------------------------

void Init_Port (void)
{
    P0MDOUT   = 0xbf;// 
    //P2MDOUT   = 0x0C;
    //P0MDOUT   = 0xff;//   
//////////////////////
	P1MDIN= 0xff;                     // pins on P1 are digital
//十个并口线全部push-pull
	P1MDOUT=0x00;
	P1=0xff;
	P2MDOUT=0x03;
//////////////////////////
	P0SKIP    = 0xcc;//
    P1SKIP    = 0xFF;
    P2SKIP    = 0x0F;//P2.0---P2.3 skip
///important
    XBR0      = 0x06;//p0.6跳过。分配为中断脚
    XBR1      = 0x40;
//-----------------------------------------------------------------------------

}