flash_reg_modify.c

我最初用TMS320F240芯片作开发

/*************************************************************************/
/* TMS320F2810 C Language File                                           */
/* The C Language File For Modify FLASH Register     Version number: 1.0 */
/*                                                                       */
/* File name : Flash_Reg_Modify.c                                        */
/* Date/Time created: Jan 25 2006                                        */
/* Author: Anakin.Lee                                                    */
/*************************************************************************/

#include <stdio.h>
#include <string.h>
#include "TMS320F2810_REG.h"

// Functions that will be run from RAM need to be assigned to 
// a different section.  This section will then be mapped to a load and 
// run address using the linker cmd file.

#pragma CODE_SECTION(Flash_Reg_Modify,"secureRamFuncs");

/******************注意********************/
/* 对Flash寄存器的设置不能在Flash内部运行 */
/* 而应该装载在Flash中,在RAM中运行!!!!!!! */
/******************************************/

//                   CAUTION 
// This function MUST be executed out of RAM. Executing it
// out of OTP/Flash will yield unpredictable results

void Flash_Reg_Modify(void)
{    EALLOW;

     *FOPT=0x1;                               /* Flash流水线模式激活 */
     *FSTDBYWAIT=0xFF;                        /* 设置Flash从休眠到待机等待255个SYSCLKOUT周期 */
     *FACTIVEWAIT=0xFF;                       /* 设置Flash从待机到激活等待255个SYSCLKOUT周期 */
     *FBANKWAIT=0x0505;                       /* 设置Flash页读等待5个SYSCLKOUT周期,随机读操作等待5个SYSCLKOUT周期 */

     EDIS;
     asm(" RPT #7 || NOP");
}