TMS320F28335——下載程序到flash中

一.讓CCS軟件支持Flash燒寫

　　添加F28335.cmd文件

　　如圖屏蔽掉25335_RAM_lnk.cmd

　　2.支持從Flash中拷貝文件到RAM中

　　添加DSP2832x_MemCopy.c

　　在主函數中添加 代碼：MemCopy(&RamfuncsLoadStart, &RamfuncsLoadEnd, &RamfuncsRunStart); 三個入口參數定義如下：

// 下面參數是在鏈接腳本中定義的。具體看F28335.cmd

extern Uint16 RamfuncsLoadStart;
extern Uint16 RamfuncsLoadEnd;
extern Uint16 RamfuncsRunStart;

SECTIONS
{
 
   /* Allocate program areas: */
   .cinit              : > FLASHA      PAGE = 0
   .pinit              : > FLASHA,     PAGE = 0
   .text               : > FLASHA      PAGE = 0
   codestart           : > BEGIN       PAGE = 0
　　/*三個變量在這個位置申明*/

   ramfuncs            : LOAD = FLASHD, 
                         RUN = RAML0, 
                         LOAD_START(_RamfuncsLoadStart),
                         LOAD_END(_RamfuncsLoadEnd),
                         RUN_START(_RamfuncsRunStart),
                         PAGE = 0

   csmpasswds          : > CSM_PWL     PAGE = 0
   csm_rsvd            : > CSM_RSVD    PAGE = 0
   
   /* Allocate uninitalized data sections: */
   .stack              : > RAMM1       PAGE = 1
   .ebss               : > RAML4       PAGE = 1
   .esysmem            : > RAMM1       PAGE = 1

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

   /* Allocate IQ math areas: */
   IQmath              : > FLASHC      PAGE = 0                  /* Math Code */
   IQmathTables     : > IQTABLES,  PAGE = 0, 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 = 0, TYPE = NOLOAD 
         
   /* Allocate DMA-accessible RAM sections: */
   DMARAML4         : > RAML4,     PAGE = 1
   DMARAML5         : > RAML5,     PAGE = 1
   DMARAML6         : > RAML6,     PAGE = 1
   DMARAML7         : > RAML7,     PAGE = 1
   
   /* Allocate 0x400 of XINTF Zone 7 to storing data */
   ZONE7DATA        : > ZONE7B,    PAGE = 1

   /* .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 = 0, TYPE = DSECT
   vectors             : > VECTORS     PAGE = 0, TYPE = DSECT
   
   /* Allocate ADC_cal function (pre-programmed by factory into TI reserved memory) */
   .adc_cal     : load = ADC_CAL,   PAGE = 0, TYPE = NOLOAD

}

　　調用falsh初始化函數，使flash工作在等待狀態： InitFlash(); 。應為Flash在寫的時候才需要解鎖，讀的時候不用解鎖。所以可以吧初始化放在拷貝的后面。

二、下載 .out文件到目標板

　　通過添加配置文件，在下載時多了擦除flash的操作。點擊load按鈕就可以講程序下載到flash 中去了。（注意將啟動設置為從外部flash中啟動）