TMS320F28335——下载程序到flash中

一.让CCS软件支持Flash烧写

　　添加F28335.cmd文件

　　如图屏蔽掉25335_RAM_lnk.cmd

　　2.支持从Flash中拷贝文件到RAM中

　　添加DSP2832x_MemCopy.c

　　在主函数中添加 代码：MemCopy(&RamfuncsLoadStart, &RamfuncsLoadEnd, &RamfuncsRunStart); 三个入口参数定义如下：

// 下面参数是在链接脚本中定义的。具体看F28335.cmd
extern Uint16 RamfuncsLoadStart;
extern Uint16 RamfuncsLoadEnd;
extern Uint16 RamfuncsRunStart;

SECTIONS
{

   /* Allocate program areas: */
   .cinit              : > FLASHA      PAGE =
   .pinit              : > FLASHA,     PAGE =
   .text               : > FLASHA      PAGE =
   codestart           : > BEGIN       PAGE = 0
　　/*三个变量在这个位置申明*/
   ramfuncs            : LOAD = FLASHD,
                         RUN = RAML0,
                         LOAD_START(_RamfuncsLoadStart),
                         LOAD_END(_RamfuncsLoadEnd),
                         RUN_START(_RamfuncsRunStart),
                         PAGE = 

   csmpasswds          : > CSM_PWL     PAGE =
   csm_rsvd            : > CSM_RSVD    PAGE = 

   /* Allocate uninitalized data sections: */
   .stack              : > RAMM1       PAGE =
   .ebss               : > RAML4       PAGE =
   .esysmem            : > RAMM1       PAGE = 

   /* Initalized sections go in Flash */
   /* For SDFlash to program these, they must be allocated to page 0 */
   .econst             : > FLASHA      PAGE =
   .switch             : > FLASHA      PAGE =       

   /* Allocate IQ math areas: */
   IQmath              : > FLASHC      PAGE =                   /* Math Code */
   IQmathTables     : > IQTABLES,  PAGE = , TYPE = NOLOAD 

   /* Uncomment the section below if calling the IQNexp() or IQexp()
      functions from the IQMath.lib library in order to utilize the
      relevant IQ Math table in Boot ROM (This saves space and Boot ROM
      is 1 wait-state). If this section is not uncommented, IQmathTables2
      will be loaded into other memory (SARAM, Flash, etc.) and will take
      up space, but 0 wait-state is possible.
   */
   /*
   IQmathTables2    : > IQTABLES2, PAGE = 0, TYPE = NOLOAD
   {

              IQmath.lib<IQNexpTable.obj> (IQmathTablesRam)

   }
   */

   FPUmathTables    : > FPUTABLES, PAGE = , TYPE = NOLOAD 

   /* Allocate DMA-accessible RAM sections: */
   DMARAML4         : > RAML4,     PAGE =
   DMARAML5         : > RAML5,     PAGE =
   DMARAML6         : > RAML6,     PAGE =
   DMARAML7         : > RAML7,     PAGE = 

   /* Allocate 0x400 of XINTF Zone 7 to storing data */
   ZONE7DATA        : > ZONE7B,    PAGE = 

   /* .reset is a standard section used by the compiler.  It contains the */
   /* the address of the start of _c_int00 for C Code.   /*
   /* When using the boot ROM this section and the CPU vector */
   /* table is not needed.  Thus the default type is set here to  */
   /* DSECT  */
   .reset              : > RESET,      PAGE = , TYPE = DSECT
   vectors             : > VECTORS     PAGE = , TYPE = DSECT

   /* Allocate ADC_cal function (pre-programmed by factory into TI reserved memory) */
   .adc_cal     : load = ADC_CAL,   PAGE = , TYPE = NOLOAD

}

　　调用falsh初始化函数，使flash工作在等待状态： InitFlash(); 。应为Flash在写的时候才需要解锁，读的时候不用解锁。所以可以吧初始化放在拷贝的后面。

二、下载 .out文件到目标板

　　通过添加配置文件，在下载时多了擦除flash的操作。点击load按钮就可以讲程序下载到flash 中去了。（注意将启动设置为从外部flash中启动）