TMS320F28377D: RAM地址0xD000~0xF000(size为0x2000)，为什么刚复位上电debug有大量数据

没有人知道原因么？

你好，GSxRAMs在CPU1和CPU2的子系统之间是共享的，有可能是这个问题，您是否使用了两个CPU？

只用了cpu1，没有使用cpu2

好的，我咨询一下资深工程师，一旦有回复立即回复给您。

好的，谢谢！顺便说一下，刚上电的时候(不进行debug)，将0xD000~0xF000之间的数据串口打印出来，里面的数据也是不全部为零，但是比debug时候少了很多，只有几十个字节不为零。但是不管什么模式，理论上应该全部为0才对。

你好，根据您附加的链接器命令文件图片，.bss 段似乎从0xF000开始、长度为0x7000。 您的存储器浏览器图像显示了0xD000处的内容。 能否附加完整的链接器命令文件？ 

MEMORY
{
PAGE 0 : /* Program Memory */
/* Memory (RAM/FLASH) blocks can be moved to PAGE1 for data allocation */
/* BEGIN is used for the "boot to Flash" bootloader mode */

BEGIN : origin = 0x080000, length = 0x000002
//RAMM0 : origin = 0x000122, length = 0x0002DE
RAMD0 : origin = 0x00B000, length = 0x000800
//RAMLS0 : origin = 0x008000, length = 0x000800
//RAMLS1 : origin = 0x008800, length = 0x000800
//RAMLS2 : origin = 0x009000, length = 0x000800
//RAMLS3 : origin = 0x009800, length = 0x000800
RAMLS : origin = 0x008000, length = 0x002000

RAMLS4 : origin = 0x00A000, length = 0x000800
RunRAMGS : origin = 0x017000, length = 0x005000
//RAMGS14 : origin = 0x01A000, length = 0x001000
// RAMGS15 : origin = 0x01B000, length = 0x001000
RESET : origin = 0x3FFFC0, length = 0x000002 // 向量表首地址

/* Flash sectors */
// FLASHA : origin = 0x080002, length = 0x001FFE/* on-chip Flash */
//FLASHB : origin = 0x082000, length = 0x002000 /* on-chip Flash */
//FLASHC : origin = 0x084000, length = 0x002000 /* on-chip Flash */
// FLASHD : origin = 0x086000, length = 0x002000 /* on-chip Flash */
//FLASHE : origin = 0x088000, length = 0x008000 /* on-chip Flash */
// FLASHF : origin = 0x090000, length = 0x008000 /* on-chip Flash */
// FLASHG : origin = 0x098000, length = 0x008000 /* on-chip Flash */
// FLASHH : origin = 0x0A0000, length = 0x008000 /* on-chip Flash */
// FLASHI : origin = 0x0A8000, length = 0x008000 /* on-chip Flash */
// FLASHJ : origin = 0x0B0000, length = 0x008000 /* on-chip Flash */
// FLASHK : origin = 0x0B8000, length = 0x002000 /* on-chip Flash */
// FLASHL : origin = 0x0BA000, length = 0x002000 /* on-chip Flash */
// FLASHM : origin = 0x0BC000, length = 0x002000 /* on-chip Flash */
// FLASHN : origin = 0x0BE000, length = 0x002000 /* on-chip Flash */

BOOTLoader : origin = 0x080002, length = 0x07FFE /* BOOTLoader */ /* 32K*/
UserAPP : origin = 0x088000, length = 0x018000 /* UserAPP */ /* 96K */
BackupAPP : origin = 0x0A0000, length = 0x018000 /* BackupAPP */ /* 96K */
UserDATA : origin = 0x0B8000, length = 0x08000 /* UserDATA */ /* 32K */

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

BOOT_RSVD : origin = 0x000002, length = 0x000120 /* Part of M0, BOOT rom will use this for stack */
//RAMM1 : origin = 0x000400, length = 0x000400 /* on-chip RAM block M1 */
StackRAM : origin = 0x000122, length = 0x0006DE
RAMD1 : origin = 0x00B800, length = 0x000800

RAMLS5 : origin = 0x00A800, length = 0x000800

RAMGS01 : origin = 0x00C000, length = 0x001000
//RAMGS0 : origin = 0x00C000, length = 0x001000
//RAMGS1 : origin = 0x00D000, length = 0x001000
//RAMGS2 : origin = 0x00E000, length = 0x001000
BssRAMGS : origin = 0x00F000, length = 0x007000
//RAMGS3 : origin = 0x00F000, length = 0x001000
//RAMGS4 : origin = 0x010000, length = 0x001000
//RAMGS5 : origin = 0x011000, length = 0x001000
//RAMGS6 : origin = 0x012000, length = 0x001000
//RAMGS7 : origin = 0x013000, length = 0x001000
//RAMGS8 : origin = 0x014000, length = 0x001000
//RAMGS9 : origin = 0x015000, length = 0x001000

// RAMGS10 : origin = 0x016000, length = 0x001000
// RAMGS11 : origin = 0x017000, length = 0x001000
// RAMGS12 : origin = 0x018000, length = 0x001000
// RAMGS13 : origin = 0x019000, length = 0x001000

CPU2TOCPU1RAM : origin = 0x03F800, length = 0x000400
CPU1TOCPU2RAM : origin = 0x03FC00, length = 0x000400
}

SECTIONS
{
/* Allocate program areas: */
.cinit : > BOOTLoader PAGE = 0, ALIGN(4)
.pinit : > BOOTLoader, PAGE = 0, ALIGN(4)
.text : >> BOOTLoader PAGE = 0, ALIGN(4)
codestart : > BEGIN PAGE = 0, ALIGN(4)
/*
ramfuncs : LOAD = BOOTLoader,
RUN = RunRAMLS,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
RUN_SIZE(_RamfuncsRunSize),
RUN_END(_RamfuncsRunEnd),
PAGE = 0, ALIGN(4)
*/

ramfuncs
{
-l F021_API_F2837xD_FPU32.lib
}

LOAD = BOOTLoader,
RUN = RunRAMGS,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
RUN_SIZE(_RamfuncsRunSize),
RUN_END(_RamfuncsRunEnd),
PAGE = 0,ALIGN(4)

/* Allocate uninitalized data sections: */
.stack : > StackRAM PAGE = 1
//.stack : > RAMM1 PAGE = 1
//.ebss : >> RAMLS5 | RAMGS0 | RAMGS1 PAGE = 1
.ebss : >> BssRAMGS PAGE = 1
.esysmem : > RAMLS5 PAGE = 1

/* Initalized sections go in Flash */
.econst : >> BOOTLoader PAGE = 0, ALIGN(4)
.switch : > BOOTLoader PAGE = 0, ALIGN(4) //

.reset : > RESET, PAGE = 0, TYPE = DSECT /* not used, */

Filter_RegsFile : > RAMGS01, PAGE = 1

SHARERAMGS0 : > RAMGS01, PAGE = 1
SHARERAMGS1 : > RAMGS01, PAGE = 1
ramgs0 : > RAMGS01, PAGE = 1
ramgs1 : > RAMGS01, PAGE = 1

/* Flash Programming Buffer */
BufferDataSection : > RAMD1, PAGE = 1, ALIGN(4)

#ifdef __TI_COMPILER_VERSION
#if __TI_COMPILER_VERSION >= 15009000
.TI.ramfunc : {} LOAD = FLASHD,
RUN = RAMLS0 | RAMLS1 | RAMLS2 |RAMLS3,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
RUN_SIZE(_RamfuncsRunSize),
RUN_END(_RamfuncsRunEnd),
PAGE = 0, ALIGN(4)
#endif
#endif
//Inter-Process Communication处理器间通信
/* The following section definitions are required when using the IPC API Drivers */
GROUP : > CPU1TOCPU2RAM, PAGE = 1
{
PUTBUFFER
PUTWRITEIDX
GETREADIDX
}

GROUP : > CPU2TOCPU1RAM, PAGE = 1
{
GETBUFFER : TYPE = DSECT
GETWRITEIDX : TYPE = DSECT
PUTREADIDX : TYPE = DSECT
}

//专为电机模块设计的SDFM滤波模块
/* The following section definition are for SDFM examples */
Filter1_RegsFile : > RAMGS01, PAGE = 1, fill=0x1111
Filter2_RegsFile : > RAMGS01, PAGE = 1, fill=0x2222
Filter3_RegsFile : > RAMGS01, PAGE = 1, fill=0x3333
Filter4_RegsFile : > RAMGS01, PAGE = 1, fill=0x4444
Difference_RegsFile : >RAMGS01, PAGE = 1, fill=0x3333

}

你好，未使用的段在复位时可能不会被初始化为零。 如果要对其进行零初始化，可以在链接器 cmd 文件中使用 FILL=0。

其实刚开始0xD000~0xF000是使用的，就是因为发现代码运行有异常，进一步排查发现这个地址ram复位不全部为零，我才避开这一段空间

而且，我还特别将0xD000~0XF000地址的数据与flash里面代码对比，发现一大段数据来自flash

你好，

shuaitong chen 说：

发现一大段数据来自flash

您是想问为什么是吗？

是的，fllash的数据怎么会跑到这段地址的。

你好，闪存工具使用 RAM 下载闪存 API 和应用程序映像，然后从 RAM 执行闪存 API，将应用程序映像编程到闪存中。 闪存编程结束后，调试复位应使 GEL 文件清除 RAM，因为它在复位函数中包含 RAM 初始化序列。 

同时，请检查您的应用以确保所有变量都已初始化。 完成此操作后，您不应看到类似这样的问题。

 闪存插件本身不会在闪存编程结束时调用 RAM 初始化序列，因为它不需要用于生产编程(对它们来说时间更短更好)-而且对于开发，您应该知道的，只要链接器命令文件中的所有已初始化段都映射到闪存，并且应用程序中的所有变量都已初始化，就不会出现任何问题。 

如果您有更进一步的问题，请告诉我们。

MEMORY
{
PAGE 0 : /* Program Memory */
/* Memory (RAM/FLASH) blocks can be moved to PAGE1 for data allocation */
/* BEGIN is used for the "boot to Flash" bootloader mode */

BEGIN : origin = 0x080000, length = 0x000002
RAMM0 : origin = 0x000122, length = 0x0002DE
RAMD0 : origin = 0x00B000, length = 0x000800
RAMLS0 : origin = 0x008000, length = 0x000800
RAMLS1 : origin = 0x008800, length = 0x000800
RAMLS2 : origin = 0x009000, length = 0x000800
RAMLS3 : origin = 0x009800, length = 0x000800
RAMLS4 : origin = 0x00A000, length = 0x000800
RAMGS14 : origin = 0x01A000, length = 0x001000 /* Only Available on F28379D, F28377D, F28375D devices. Remove line on other devices. */
RAMGS15 : origin = 0x01B000, length = 0x001000 /* Only Available on F28379D, F28377D, F28375D devices. Remove line on other devices. */
RESET : origin = 0x3FFFC0, length = 0x000002

/* Flash sectors */
FLASHA : origin = 0x080002, length = 0x001FFE /* on-chip Flash */
FLASHB : origin = 0x082000, length = 0x002000 /* on-chip Flash */
FLASHC : origin = 0x084000, length = 0x002000 /* on-chip Flash */
FLASHD : origin = 0x086000, length = 0x002000 /* on-chip Flash */
FLASHE : origin = 0x088000, length = 0x008000 /* on-chip Flash */
FLASHF : origin = 0x090000, length = 0x008000 /* on-chip Flash */
FLASHG : origin = 0x098000, length = 0x008000 /* on-chip Flash */
FLASHH : origin = 0x0A0000, length = 0x008000 /* on-chip Flash */
FLASHI : origin = 0x0A8000, length = 0x008000 /* on-chip Flash */
FLASHJ : origin = 0x0B0000, length = 0x008000 /* on-chip Flash */
FLASHK : origin = 0x0B8000, length = 0x002000 /* on-chip Flash */
FLASHL : origin = 0x0BA000, length = 0x002000 /* on-chip Flash */
FLASHM : origin = 0x0BC000, length = 0x002000 /* on-chip Flash */
FLASHN : origin = 0x0BE000, length = 0x002000 /* on-chip Flash */

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

BOOT_RSVD : origin = 0x000002, length = 0x000120 /* Part of M0, BOOT rom will use this for stack */
RAMM1 : origin = 0x000400, length = 0x000400 /* on-chip RAM block M1 */
RAMD1 : origin = 0x00B800, length = 0x000800

RAMLS5 : origin = 0x00A800, length = 0x000800

RAMGS0 : origin = 0x00C000, length = 0x001000
RAMGS1 : origin = 0x00D000, length = 0x001000
RAMGS2 : origin = 0x00E000, length = 0x001000
RAMGS3 : origin = 0x00F000, length = 0x001000
RAMGS4 : origin = 0x010000, length = 0x001000
RAMGS5 : origin = 0x011000, length = 0x001000
RAMGS6 : origin = 0x012000, length = 0x001000
RAMGS7 : origin = 0x013000, length = 0x001000
RAMGS8 : origin = 0x014000, length = 0x001000
RAMGS9 : origin = 0x015000, length = 0x001000
RAMGS10 : origin = 0x016000, length = 0x001000
RAMGS11 : origin = 0x017000, length = 0x001000
RAMGS12 : origin = 0x018000, length = 0x001000 /* Only Available on F28379D, F28377D, F28375D devices. Remove line on other devices. */
RAMGS13 : origin = 0x019000, length = 0x001000 /* Only Available on F28379D, F28377D, F28375D devices. Remove line on other devices. */

CPU2TOCPU1RAM : origin = 0x03F800, length = 0x000400
CPU1TOCPU2RAM : origin = 0x03FC00, length = 0x000400
}

SECTIONS
{
/* Allocate program areas: */
.cinit : > FLASHB PAGE = 0, ALIGN(4)
.pinit : > FLASHB, PAGE = 0, ALIGN(4)
.text : >> FLASHB | FLASHC | FLASHD | FLASHE PAGE = 0, ALIGN(4)
codestart : > BEGIN PAGE = 0, ALIGN(4)

/* Allocate uninitalized data sections: */
.stack : > RAMM1 PAGE = 1
.ebss : >> RAMLS5 | RAMGS0 | RAMGS1 PAGE = 1
.esysmem : > RAMLS5 PAGE = 1

/* Initalized sections go in Flash */
.econst : >> FLASHF | FLASHG | FLASHH PAGE = 0, ALIGN(4)
.switch : > FLASHB PAGE = 0, ALIGN(4)

.reset : > RESET, PAGE = 0, TYPE = DSECT /* not used, */

Filter_RegsFile : > RAMGS0, PAGE = 1

SHARERAMGS0 : > RAMGS0, PAGE = 1
SHARERAMGS1 : > RAMGS1, PAGE = 1
ramgs0 : > RAMGS0, PAGE = 1
ramgs1 : > RAMGS1, PAGE = 1
/*
#ifdef __TI_COMPILER_VERSION__
#if __TI_COMPILER_VERSION__ >= 15009000
.TI.ramfunc : {} LOAD = FLASHD,
RUN = RAMLS0 | RAMLS1 | RAMLS2 |RAMLS3,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
RUN_SIZE(_RamfuncsRunSize),
RUN_END(_RamfuncsRunEnd),
PAGE = 0, ALIGN(4)
// #else
*/
ramfuncs : LOAD = FLASHD,
RUN = RAMLS0 | RAMLS1 | RAMLS2 |RAMLS3,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
RUN_SIZE(_RamfuncsRunSize),
RUN_END(_RamfuncsRunEnd),
PAGE = 0, ALIGN(4)
// #endif
//#endif

/* The following section definitions are required when using the IPC API Drivers */
GROUP : > CPU1TOCPU2RAM, PAGE = 1
{
PUTBUFFER
PUTWRITEIDX
GETREADIDX
}

GROUP : > CPU2TOCPU1RAM, PAGE = 1
{
GETBUFFER : TYPE = DSECT
GETWRITEIDX : TYPE = DSECT
PUTREADIDX : TYPE = DSECT
}

/* The following section definition are for SDFM examples */
Filter1_RegsFile : > RAMGS1, PAGE = 1, fill=0x1111
Filter2_RegsFile : > RAMGS2, PAGE = 1, fill=0x2222
Filter3_RegsFile : > RAMGS3, PAGE = 1, fill=0x3333
Filter4_RegsFile : > RAMGS4, PAGE = 1, fill=0x4444
Difference_RegsFile : >RAMGS5, PAGE = 1, fill=0x3333
}

/*
//===========================================================================
// End of file.
//===========================================================================
*/

这是我临时编写的测试用例，cmd几乎没动，程序也很简单，但是0xD000~0xF000依然在debug时有大量数据

shuaitong chen 说：

.cinit : > FLASHB PAGE = 0, ALIGN(4)

你好，FLASHB后是否少了一个逗号。

吧里有人知道为什么吗?????等待大神，请确实知道原因且经过测试的人帮忙解答，谢谢！

你好，flashB后面加一个逗号后，观察memory现象还和以前一样

你好，调试复位会清除里面的内容吗，请试一下。