c6711_cpu.h

该代码实现了 两次下载法在dspC6713平台上 烧写flash的操作过程

/*
*********************************************************************************************************
* File : OS_CPU.H
* Descriptin: 
*********************************************************************************************************
*/
#ifdef C6711_GLOBALS
#define  EXT
#else
#define  EXT  extern
#endif

/*
*********************************************************************************************************
*                                              DATA TYPES
*                                         (Compiler Specific)
*********************************************************************************************************
*/

typedef unsigned char  BOOLEAN;
typedef unsigned char  INT8U;                    /* Unsigned  8 bit quantity                           */
typedef signed   char  INT8S;                    /* Signed    8 bit quantity                           */
typedef unsigned short INT16U;                   /* Unsigned 16 bit quantity                           */
typedef signed   short INT16S;                   /* Signed   16 bit quantity                           */
typedef unsigned int   INT32U;                   /* Unsigned 32 bit quantity                           */
typedef signed   int   INT32S;                   /* Signed   32 bit quantity                           */
typedef float          FP32;                     /* Single precision floating point                    */
typedef double         FP64;                     /* Double precision floating point                    */

typedef unsigned int   C6711_STK;                   /* Each stack entry is 32-bit wide                    */

#define BYTE           INT8S                     /* Define data types for backward compatibility ...   */
#define UBYTE          INT8U                     /* ... to uC/OS V1.xx.  Not actually needed for ...   */
#define WORD           INT16S                    /* ... uC/OS-II.                                      */
#define UWORD          INT16U
#define LONG           INT32S
#define ULONG          INT32U


typedef struct
{
   int     integer;
} 
 REGISTERS ;


   /*------------------------------------------------------------------------
     THE SP MUST BE ALIGNED ON AN 8-BYTE BOUNDARY.                          
     WHICH means that the framesize has to be a multiple of that
   ------------------------------------------------------------------------*/

typedef struct 
{
   void    *Start_Address;
   REGISTERS
           A0   ,
           A1   ,
           A2   ,
           A3   ,
           A4   ,
           A5   ,
           A6   ,
           A7   ,
           A8   ,
           A9   ,
           A10  ,
           A11  ,
           A12  ,
           A13  ,
           A14  ,
           A15  ;
   REGISTERS
           B0   ,
           B1   ,
           B2   ,
           B3   ,
           B4   ,
           B5   ,
           B6   ,
           B7   ,
           B8   ,
           B9   ,
           B10  ,
           B11  ,
           B12  ,
           B13  ,
           B14  ,
           B15  ;
  /* 32 registers */
   int
          AMR_Adressing_Mode_Register   ,      		/* save/restore */
          CSR_Control_Status_Register   ,	 		/* save/restore */
          IER_Interrupt_Enable_Register ,			/* save/restore */
          IRP_Interrupt_Return_Pointer  ;           /* save/restore */
   int       	 		
          FADCR_Float_Add_Configure_Register,        /* save/restore */
          FAUCR_Float_Auxiliary_Configure_Register,  /* save/restore */
          FMCR_Float_Multiply_Configure_Register;    /* save/restore */
  /* 36 registers */
   int	  dummyForAlignment ;
   } INITIAL_REGISTER_FRAME;




/* CPU Interrupt Numbers                                                      */

#define CPU_INT_RST          0x00
#define CPU_INT_NMI          0x01
#define CPU_INT_RSV1         0x02
#define CPU_INT_RSV2         0x03
#define CPU_INT4             0x04
#define CPU_INT5             0x05
#define CPU_INT6             0x06
#define CPU_INT7             0x07
#define CPU_INT8             0x08
#define CPU_INT9             0x09
#define CPU_INT10            0x0A
#define CPU_INT11            0x0B
#define CPU_INT12            0x0C
#define CPU_INT13            0x0D
#define CPU_INT14            0x0E
#define CPU_INT15            0x0F



extern cregister volatile unsigned int IER ;
extern volatile unsigned int Always_Enabled_Interrupts ;
static volatile unsigned int Normally_Enabled_Interrupts ;

static inline void OS_ENTER_CRITICAL(void)
{
                IER = Always_Enabled_Interrupts;
				asm("		nop 4 ");
}

static inline  void OS_EXIT_CRITICAL(void)
{
  				IER = Normally_Enabled_Interrupts ;
}