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28027和28035的加密

jinquan li
Prodigy 228 points

最近开始用CCS5.2，程序包用的controlsuit里面的例程。cmd用的是flash的配置。发现当DSP2802x_CSMPasswords.asm里面的密码全部是FFFF的时候，程序运行正常，且断开仿真器，重新上电运行都没有问题。但是一旦更改DSP2802x_CSMPasswords.asm中的密码后重新烧写，发现程序不跑了，经测试中断都没有进去。27和35都遇到了这个问题。重新连接仿真器后依然可以通过onchipflash里面的unlock解锁，请教一下是什么问题？

另：当DSP2802x_CSMPasswords.asm为FFFF时，通过onchipflash中program password手动加密，程序可以运行，只是不太正常。

  • 0
    Guru 30385 points

    你在加密的时候是否使用了非secure区域的ram，将其改用为secure区域的ram。

  • 0
    Guru 56631 points

    通过DSP2802x_CSMPasswords.asm里面去修改数据   容易改错    影响代码的执行

    建议你到onchipflash里面修改吧     

    关于你说的在onchipflash里面修改lock后    程序运行不正常   有些不理解

  • 0 回复 mangui zhang
    Prodigy 228 points

    CCS3.3从来没有遇到这个问题

  • 0 回复 Hank Zhao
    Prodigy 228 points

    CMD文件没动过，请教一下怎么检查我是否用了非secure的ram捏

    MEMORY { PAGE 0:    /* Program Memory */            /* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE1 for data allocation */

       PRAML0      : origin = 0x008000, length = 0x000800     /* on-chip RAM block L0 */    OTP         : origin = 0x3D7800, length = 0x000400     /* on-chip OTP */    FLASHD      : origin = 0x3F0000, length = 0x002000     /* on-chip FLASH */    FLASHC      : origin = 0x3F2000, length = 0x002000     /* on-chip FLASH */    FLASHA      : origin = 0x3F6000, length = 0x001F80     /* on-chip FLASH */    CSM_RSVD    : origin = 0x3F7F80, length = 0x000076     /* Part of FLASHA.  Program with all 0x0000 when CSM is in use. */    BEGIN       : origin = 0x3F7FF6, length = 0x000002     /* Part of FLASHA.  Used for "boot to Flash" bootloader mode. */    CSM_PWL_P0  : origin = 0x3F7FF8, length = 0x000008     /* Part of FLASHA.  CSM password locations in FLASHA */

       IQTABLES    : origin = 0x3FE000, length = 0x000B50     /* IQ Math Tables in Boot ROM */    IQTABLES2   : origin = 0x3FEB50, length = 0x00008C     /* IQ Math Tables in Boot ROM */    IQTABLES3   : origin = 0x3FEBDC, length = 0x0000AA   /* IQ Math Tables in Boot ROM */

       ROM         : origin = 0x3FF27C, length = 0x000D44     /* Boot ROM */    RESET       : origin = 0x3FFFC0, length = 0x000002     /* part of boot ROM  */    VECTORS     : origin = 0x3FFFC2, length = 0x00003E     /* part of boot ROM  */

    PAGE 1 :   /* Data Memory */            /* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE0 for program allocation */            /* Registers remain on PAGE1                                                  */

       BOOT_RSVD   : origin = 0x000000, length = 0x000050     /* Part of M0, BOOT rom will use this for stack */    RAMM0       : origin = 0x000050, length = 0x0003B0     /* on-chip RAM block M0 */    RAMM1       : origin = 0x000400, length = 0x000400     /* on-chip RAM block M1 */    DRAML0      : origin = 0x008800, length = 0x000800     /* on-chip RAM block L0 */    FLASHB      : origin = 0x3F4000, length = 0x002000     /* on-chip FLASH */ }

  • 0
    Prodigy 30 points

    问题解决了吗？？我现在也有类似的问题，请教一下