timer.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

/******************************************************************************/
/*  TIMER.H - TMS320C6711 Peripheral Support Library Timer Support            */
/*                                                                            */
/*     This file provides the header for the DSP's Timer support.             */
/******************************************************************************/
#ifndef _TIMER_H_
#define _TIMER_H_


/*----------------------------------------------------------------------------*/
/* INCLUDES                                                                   */
/*----------------------------------------------------------------------------*/
#ifndef MASTER_FILE
#define C6711_GLOBALS
#include "C6711_CPU.H"
#endif

/*----------------------------------------------------------------------------*/
/*                                 DEFINES                                    */
/*----------------------------------------------------------------------------*/

/* Define Timer0 Registers */
#define TIMER0_CTRL     0x1940000	/* Address of timer0 control reg.       */
#define TIMER0_PRD      0x1940004	/* Address of timer0 period reg.        */
#define TIMER0_COUNT    0x1940008	/* Address of timer0 counter reg.       */

/* Define Timer1 Registers */
#define TIMER1_CTRL     0x1980000	/* Address of timer1 control reg.       */
#define TIMER1_PRD      0x1980004	/* Address of timer1 period reg.        */
#define TIMER1_COUNT    0x1980008	/* Address of timer1 counter reg.       */

 /*Timer Mode Control Register (TIMER_CTL) Bitfield*/
#define FUNC                0   /*Function of TOUT pin                          */
#define INVOUT              1   /*TOUT inverter control. Used only if FUNC = 1. */
#define DATOUT              2   /*Data output                                   */
#define DATIN               3   /*Data in: Value on TINP pin                    */
#define PWID                4   /*Pulse width.                                  */
#define GO                  6   /*GO bit. Resets and starts the timer counter.  */
#define HLD                 7   /*Hold. Counter may be read or written regardless of HLD value.*/
#define CP                  8   /*Clock/pulse mode                              */
#define CLKSRC              9   /*Timer input clock source                      */
#define INVINP              10  /*TINP inverter control.                        */
#define TSTAT               11  /*Timer status. Value of timer output.          */
                                
#define CTRL_SEL            0
#define PRD_SEL             1
#define COUNT_SEL           2  
                              
  /*           TIMER STATUS             */
#define TIMER_HOLD          0
#define TIMER_RESUME        1
#define TIMER_START         3  
  
/*----------------------------------------------------------------------------*/
/*   TIMER0 MACRO FUNCTIONS                                                   */
/*----------------------------------------------------------------------------*/

/*----------------------------------------------------------------------------*/
/* TOUT0_IS_TSTAT0() - TOUT0 follow the value of TSTAT0 by setting the FUNC   */
/*              bit (bit 0) in the TIMER0_CTRL                                */
/*----------------------------------------------------------------------------*/
#define TOUT0_IS_TSTAT0()   SET_REG_BIT(TIMER0_CTRL, FUNC)

/*----------------------------------------------------------------------------*/
/* TOUT0_IS_DATOUT0() - TOUT0 follow the value of DATOUT0 by clearing the       */
/*             CLKSRC  bit (bit 0) in the TIMER0_CTRL.                        */
/*----------------------------------------------------------------------------*/
#define TOUT0_IS_DATOUT0()   RESET_REG_BIT(TIMER0_CTRL, CLKSRC)

/*----------------------------------------------------------------------------*/
/* INVER_TSTAT0() - Inverse value of TSTAT0 by setting the INVOUT             */
/*              bit (bit 1) in the TIMER0_CTRL                                */
/*----------------------------------------------------------------------------*/
#define INVER_TSTAT0()   SET_REG_BIT(TIMER0_CTRL, INVOUT)

/*----------------------------------------------------------------------------*/
/* NOT_INVER_TSTA0T() - Not Inverse value of TSTAT0 by clearing the INVOUT     */
/*              bit (bit 1) in the TIMER0_CTRL                                */
/*----------------------------------------------------------------------------*/
#define NOT_INVER_TSTAT0()   RESET_REG_BIT(TIMER0_CTRL, INVOUT)

/*----------------------------------------------------------------------------*/
/* WRITE_DATOUT0() - Write value of DATOUT0 bit (bit 2) in the TIMER0_CTRL    */
/*----------------------------------------------------------------------------*/
#define WRITE_DATOUT0(val)    ASSIGN_BIT_VAL(TIMER0_CTRL,DATOUT,val)

/*----------------------------------------------------------------------------*/
/* READ_DATIN0() - Read  value of DATIN0 bit (bit 3) in the TIMER0_CTRL       */
/*----------------------------------------------------------------------------*/
#define READ_DATIN0()    GET_BIT(TIMER0_CTRL,DATIN)

/*----------------------------------------------------------------------------*/
/*  PULSE_WIDTH_ONE0() - Pulse Width is one clock by  setting the PWID        */
/*           bit (bit 4) in the TIMER0_CTRL                                   */                            
/*----------------------------------------------------------------------------*/
#define PULSE_WIDTH_ONE0()   SET_REG_BIT(TIMER0_CTRL, PWID)

/*----------------------------------------------------------------------------*/
/*  PULSE_WIDTH_TWO0() - Pulse Width is one clock by  clearing the PWID       */     
/*           bit (bit 4) in the TIMER0_CTRL                                   */                            
/*----------------------------------------------------------------------------*/
#define PULSE_WIDTH_TWO0()   RESET_REG_BIT(TIMER0_CTRL, PWID)

/*----------------------------------------------------------------------------*/
/*  TSTAT0_IS_CLOCK0() - Out of TSTAT0 is clock,by setting the C/P             */
/*        bit bit(8) in the TIMER0_CTRL                                       */
/*----------------------------------------------------------------------------*/
#define TSTAT0_IS_CLOCK0()  SET_REG_BIT(TIMER0_CTRL, CP) 

/*----------------------------------------------------------------------------*/
/*  TSTAT0_IS_PULSE0() - Out of TSTAT0 is pluse,by clearring the C/P           */
/*        bit bit(8) in the TIMER0_CTRL                                       */
/*----------------------------------------------------------------------------*/
#define TSTAT0_IS_PULSE0()  RESET_REG_BIT(TIMER0_CTRL, CP)

/*----------------------------------------------------------------------------*/
/* TIMER_INT_CLOCK0() - TIMER use internal clock source by setting the CLKSRC */
/*              bit (bit 9) in the TIMER0_CTRL                                */
/*----------------------------------------------------------------------------*/
#define TIMER_INT_CLOCK0()   SET_REG_BIT(TIMER0_CTRL, CLKSRC)

/*----------------------------------------------------------------------------*/
/* TIMER_EXT_CLOCK0() - TIMER use external clock source by clearing the       */
/*            CLKSRC  bit (bit 9) in the TIMER0_CTRL.                         */
/*----------------------------------------------------------------------------*/
#define TIMER_EXT_CLOCK0()   RESET_REG_BIT(TIMER0_CTRL, CLKSRC)

/*----------------------------------------------------------------------------*/
/*  RIS_EDGE_TRIG0() - Rising edge of DATIN trigger counting,by setting       */
/*            INVINP bit bit(10) in the TIMER0_CTRL                           */
/*----------------------------------------------------------------------------*/
#define RIS_EDGE_TRIG0()  SET_REG_BIT(TIMER0_CTRL, INVINP)

/*----------------------------------------------------------------------------*/
/*  FAL_EDGE_TRIG0() - Falling edge of DATIN trigger counting,by clearing     */
/*           INVINP bit bit(10) in the TIMER0_CTRL                            */
/*----------------------------------------------------------------------------*/
#define FAL_EDGE_TRIG0()  RESET_REG_BIT(TIMER0_CTRL, INVINP)

/*----------------------------------------------------------------------------*/
/* READ_TSTAT0() - Read  value of TSTAT bit (bit 11) in the TIMER0_CTRL       */
/*----------------------------------------------------------------------------*/
#define READ_TSTAT0()    GET_BIT(TIMER0_CTRL,TSTAT)


/*----------------------------------------------------------------------------*/
/*   TIMER1 MACRO FUNCTIONS                                                   */
/*----------------------------------------------------------------------------*/

/*----------------------------------------------------------------------------*/
/* TOUT1_IS_TSTAT1() - TOUT1 follow the value of TSTAT1 by setting the FUNC   */
/*              bit (bit 0) in the TIMER1_CTRL                                */