DSP 烧写程序进入非法中断

CLBuu · 发表于 2022-1-10 10:36

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编写DSP程序时，由于代码较长，超过片内RAM空间，所以改为烧写flash
   开始烧写代码，运行程序，结果均正常；然后在此基础上添加一段代码（代码内容类似，没有错误），结果运行程序后，程序跳入非法中断 interrupt void ILLEGAL_ISR(void)，不知为何。仅仅是添加一段代码，结果出现非法中断，百思不得其解，请高手指点一下。多谢多谢。
   程序中cmd文件如下：
MEMORY
{
PAGE 0: /* Program Memory */
         /* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE1 for data allocation */

ZONE0    : origin = 0x004000, length = 0x001000    /* XINTF zone 0 */
RAML0    : origin = 0x008000, length = 0x005000    /* on-chip RAM block L0 */
/*RAML1    : origin = 0x009000, length = 0x001000*/    /* on-chip RAM block L1 */
/*RAML2    : origin = 0x00A000, length = 0x001000*/    /* on-chip RAM block L2 */
/*RAML3    : origin = 0x00B000, length = 0x001000*/    /* on-chip RAM block L3 */
ZONE6    : origin = 0x0100000, length = 0x100000 /* XINTF zone 6 */
ZONE7A    : origin = 0x0200000, length = 0x00FC00 /* XINTF zone 7 - program space */
FLASHH    : origin = 0x300000, length = 0x008000    /* on-chip FLASH */
/*FLASHG    : origin = 0x308000, length = 0x008000*/    /* on-chip FLASH */
/*FLASHF    : origin = 0x310000, length = 0x008000*/    /* on-chip FLASH */
/*FLASHE    : origin = 0x318000, length = 0x008000*/    /* on-chip FLASH */
/*FLASHD    : origin = 0x320000, length = 0x008000*/    /* on-chip FLASH */
/*FLASHC    : origin = 0x328000, length = 0x008000*/    /* on-chip FLASH */
FLASHA    : origin = 0x308000, length = 0x012000    /* on-chip FLASH */
CSM_RSVD : origin = 0x33fF80, length = 0x000076    /* Part of FLASHA.  Program with all 0x0000 when CSM is in use. */
BEGIN    : origin = 0x33FFF6, length = 0x000002    /* Part of FLASHA.  Used for "boot to Flash" bootloader mode. */
CSM_PWL    : origin = 0x33FFF8, length = 0x000008    /* Part of FLASHA.  CSM password locations in FLASHA */
OTP       : origin = 0x380400, length = 0x000400    /* on-chip OTP */
ADC_CAL    : origin = 0x380080, length = 0x000009    /* ADC_cal function in Reserved memory */

IQTABLES : origin = 0x3FE000, length = 0x000b50    /* IQ Math Tables in Boot ROM */
IQTABLES2 : origin = 0x3FEB50, length = 0x00008c    /* IQ Math Tables in Boot ROM */
FPUTABLES : origin = 0x3FEBDC, length = 0x0006A0    /* FPU 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 */
/*RAML4    : origin = 0x00C000, length = 0x001000*/    /* on-chip RAM block L1 */
RAML5    : origin = 0x00D000, length = 0x001000    /* on-chip RAM block L1 */
RAML6    : origin = 0x00E000, length = 0x001000    /* on-chip RAM block L1 */
RAML7    : origin = 0x00F000, length = 0x001000    /* on-chip RAM block L1 */
ZONE7B    : origin = 0x20FC00, length = 0x000400    /* XINTF zone 7 - data space */
ZONE7A    : origin = 0x210000, length = 0x010000
/*FLASHB    : origin = 0x330000, length = 0x008000*/    /* on-chip FLASH */
}

/* Allocate sections to memory blocks.
Note:
      codestart user defined section in DSP28_CodeStartBranch.asm used to redirect code
               execution when booting to flash
      ramfuncs  user defined section to store functions that will be copied from Flash into RAM
*/

SECTIONS
{

/* Allocate program areas: */
.cinit             : > FLASHA    PAGE = 0
.pinit             : > FLASHA,    PAGE = 0
.text             : > FLASHA    PAGE = 0
codestart          : > BEGIN    PAGE = 0
ramfuncs          : LOAD = FLASHA,
                     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             : > RAML5    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             : > FLASHA    PAGE = 0                /* Math Code */
IQmathTables    : > IQTABLES,  PAGE = 0, TYPE = NOLOAD
IQmathTables2 : > IQTABLES2, PAGE = 0, TYPE = NOLOAD
FPUmathTables : > FPUTABLES, PAGE = 0, TYPE = NOLOAD

/* Allocate DMA-accessible RAM sections: */
DMARAML4       : > RAML5,    PAGE = 1
DMARAML5       : > RAML5,    PAGE = 1
DMARAML6       : > RAML6,    PAGE = 1
DMARAML7       : > RAML7,    PAGE = 1

/* Allocate 0x400 of XINTF Zone 7 to storing data */
data                               : > ZONE7A, PAGE = 1
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

}