请问F28027如何读写内部的Flash？

user6301887

Intellectual 260 points

Other Parts Discussed in Thread: C2000WARE, MOTORWARE

看了C2000ware 的flash_programming例程，然后移植到motorware的lab05工程，发现程序卡在了写flash里面。。。。

请问内部的flash要如何读写？有其他例程吗？

4 年多前

0 Green Deng 4 年多前

TI__Guru** 101655 points

对flash进行读写的话都需要用到FLASH API函数进行操作，你可以参考一下例程：
C:\ti\c2000\C2000Ware_3_03_00_00\device_support\f2802x\examples\structs\f28027_flash_kernel

0 user6301887 4 年多前回复 Green Deng

Intellectual 260 points

参考了flash_kernel教程，但程序卡在了擦除函数Flash_Erase里面，下面是我的程序，麻烦看看是否有问题？万分感谢！

#define WORDS_IN_FLASH_BUFFER 0x100 // Programming data buffer, Words
Uint16 Buffer[WORDS_IN_FLASH_BUFFER];

typedef struct {
Uint16 *StartAddr;
Uint16 *EndAddr;
} SECTOR;

/*--- Global variables used to interface to the flash routines */
FLASH_ST FlashStatus;

#define FLASH_END_ADDR 0x3F7FFF

#define FLASH_START_ADDR 0x3D8000
SECTOR Sector[8]= {
         (Uint16 *) 0x3D8000,(Uint16 *) 0x3DBFFF,
         (Uint16 *) 0x3DC000,(Uint16 *) 0x3DFFFF,
         (Uint16 *) 0x3E0000,(Uint16 *) 0x3E3FFF,
         (Uint16 *) 0x3E4000,(Uint16 *) 0x3E7FFF,
         (Uint16 *) 0x3E8000,(Uint16 *) 0x3EBFFF,
         (Uint16 *) 0x3EC000,(Uint16 *) 0x3EFFFF,
         (Uint16 *) 0x3F0000,(Uint16 *) 0x3F3FFF,
         (Uint16 *) 0x3F4000,(Uint16 *) 0x3F7FFF,
};

//----------------------------------------
#ifdef __cplusplus
#pragma DATA_SECTION("CsmPwlFile")
#else
#pragma DATA_SECTION(CsmPwl,"CsmPwlFile");
#endif
volatile struct CSM_PWL CsmPwl;

//----------------------------------------
#ifdef __cplusplus
#pragma DATA_SECTION("CsmRegsFile")
#else
#pragma DATA_SECTION(CsmRegs,"CsmRegsFile");
#endif
volatile struct CSM_REGS CsmRegs;

#ifdef __cplusplus
#pragma DATA_SECTION("FlashScalingVar");
#else
#pragma DATA_SECTION(Flash_CPUScaleFactor, "FlashScalingVar");
#endif
Uint32 Flash_CPUScaleFactor;

#ifdef __cplusplus
#pragma DATA_SECTION("FlashCallbackVar");
#else
#pragma DATA_SECTION(Flash_CallbackPtr, "FlashCallbackVar");
#endif
void (*Flash_CallbackPtr) (void);

#ifdef FLASH
#pragma CODE_SECTION(Example_CallFlashAPI,"ramfuncs");
#endif
void Example_CallFlashAPI(void)
{
   Uint16 i;
   Uint16 Status;
   Uint16 *Flash_ptr;     // Pointer to a location in flash
   Uint32 Length;         // Number of 16-bit values to be programmed

CsmUnlock();

   EALLOW;
   Flash_CPUScaleFactor = SCALE_FACTOR;
   Flash_CallbackPtr = NULL;
   EDIS;

   Status = Flash_Erase(SECTORH,&FlashStatus);
   if(Status != STATUS_SUCCESS)
   {
       return ;
   }

    for(i=0;i<WORDS_IN_FLASH_BUFFER;i++)
    {
        Buffer[i] = 0x100+i;
    }

    Flash_ptr = Sector[7].StartAddr;
    Length = 0x100;
    Status = Flash_Program(Flash_ptr,Buffer,Length,&FlashStatus);
    if(Status != STATUS_SUCCESS)
    {
        return ;
    }

// --------------
}

//
// CsmUnlock - This function unlocks the CSM. User must replace 0xFFFF's with
// current password for the DSP. Returns 1 if unlock is successful.
//
Uint16
CsmUnlock()
{
volatile Uint16 temp;

    //
    // Load the key registers with the current password. The 0xFFFF's are dummy
    // passwords. User should replace them with the correct password for the
    // DSP.
    //
    EALLOW;
    CsmRegs.KEY0 = 0xFFFF;
    CsmRegs.KEY1 = 0xFFFF;
    CsmRegs.KEY2 = 0xFFFF;
    CsmRegs.KEY3 = 0xFFFF;
    CsmRegs.KEY4 = 0xFFFF;
    CsmRegs.KEY5 = 0xFFFF;
    CsmRegs.KEY6 = 0xFFFF;
    CsmRegs.KEY7 = 0xFFFF;
    EDIS;

    //
    // Perform a dummy read of the password locations if they match the key
    // values, the CSM will unlock
    //
    temp = CsmPwl.PSWD0;
    temp = CsmPwl.PSWD1;
    temp = CsmPwl.PSWD2;
    temp = CsmPwl.PSWD3;
    temp = CsmPwl.PSWD4;
    temp = CsmPwl.PSWD5;
    temp = CsmPwl.PSWD6;
    temp = CsmPwl.PSWD7;

    //
    // If the CSM unlocked, return succes, otherwise return
    // failure.
    //
    if (CsmRegs.CSMSCR.bit.SECURE == 0)
    {
        return 1;
    }
    else
    {
        return 0;
    }
}

0 user6301887 4 年多前回复 Green Deng

Intellectual 260 points

我用的是Launchpad_F28069M的评估板

0 Green Deng 4 年多前回复 user6301887

TI__Guru** 101655 points

你好，参考一下这个帖子中的方法试一下：e2echina.ti.com/.../118420

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请问F28027如何读写内部的Flash？