TMS320F280049C-Q1: program enters interrupt void USER1_ISR(void) when using Flash API

Yale Li 李耀先

Hi Team,

The customer wants to know that when using the Flash API to operate the Flash, under what circumstances will the program enter the 'interrupt void USER1_ISR(void)'.

Because when he is debugging the code, there is no problem using the assembly stepping method, but after using run, it will enter the 'interrupt void USER1_ISR(void)'.

Thanks&Regards

Yale Li

over 3 years ago

+1 Vamsi Gudivada over 3 years ago

TI__Guru* 87105 points

Hi Yale,

Does this not occur if flash API is not used? Can you confirm?

Is the customer executing the ROM flash API? Or Did the customer embed the flash API in to the application and execute it from RAM?

Thanks and regards,

Vamsi

0 Yale Li 李耀先 over 3 years ago in reply to Vamsi Gudivada

TI__Expert 4660 points

Hi Vamsi,

Thanks for your continued support!

Yes, this not occur if flash API is not used.

The customer embed the flash API in to the application and execute it from RAM.

Thanks&Regards

Yale Li

0 Vamsi Gudivada over 3 years ago in reply to Yale Li 李耀先

TI__Guru* 87105 points

Hi Yale,

Can you attach the linker command file and map file?

Just curious: Why is the customer not using the ROM flash API?

Thanks and regards,

Vamsi

0 Yale Li 李耀先 over 3 years ago in reply to Vamsi Gudivada

TI__Expert 4660 points

Hi Vamsi,

Here's these files:

280049C_FLASH_lnk.cmd.txt

Fullscreen

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
MEMORY
{
PAGE 0 :
   /* BEGIN is used for the "boot to SARAM" bootloader mode   */
   /*
    0x80000 is also used as the boot address of the Bootloader.
    The address of APP BEGIN is also 0x80000 and the address of the program with bootloader is 0x86002
   */
   BEGIN            : origin = 0x080000, length = 0x000002
   RAMM0            : origin = 0x0000F5, length = 0x00030B
   RAMLS0           : origin = 0x008000, length = 0x000C00
   RAMLS3           : origin = 0x009800, length = 0x000800
   RAMLS4           : origin = 0x00A000, length = 0x002000
   RESET            : origin = 0x3FFFC0, length = 0x000002
/* Flash sectors */
   /* BANK 0 Bootloader Firmware*/
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

MEMORY
{
PAGE 0 :
   /* BEGIN is used for the "boot to SARAM" bootloader mode   */

   /*
    0x80000 is also used as the boot address of the Bootloader.
    The address of APP BEGIN is also 0x80000 and the address of the program with bootloader is 0x86002
   */
   BEGIN            : origin = 0x080000, length = 0x000002
   RAMM0            : origin = 0x0000F5, length = 0x00030B

   RAMLS0           : origin = 0x008000, length = 0x000C00
   RAMLS3           : origin = 0x009800, length = 0x000800
   RAMLS4           : origin = 0x00A000, length = 0x002000
   RESET            : origin = 0x3FFFC0, length = 0x000002

/* Flash sectors */
   /* BANK 0 Bootloader Firmware*/
   //FLASH_BANK0_SEC0  : origin = 0x080002, length = 0x000FFE	/* on-chip Flash */
   //FLASH_BANK0_SEC1  : origin = 0x081000, length = 0x001000	/* on-chip Flash */
   //FLASH_BANK0_SEC2  : origin = 0x082000, length = 0x001000	/* on-chip Flash */
   //FLASH_BANK0_SEC3  : origin = 0x083000, length = 0x001000	/* on-chip Flash */
   //FLASH_BANK0_SEC4  : origin = 0x084000, length = 0x001000	/* on-chip Flash */
   //FLASH_BANK0_SEC5  : origin = 0x085000, length = 0x001000	/* on-chip Flash */

   //FLASH_BANK0_SEC6  : origin = 0x086000, length = 0x001000	/* on-chip Flash */
   //FLASH_BANK0_SEC7  : origin = 0x087000, length = 0x001000	/* on-chip Flash */
   //FLASH_BANK0_SEC8  : origin = 0x088000, length = 0x001000	/* on-chip Flash */
   //FLASH_BANK0_SEC9  : origin = 0x089000, length = 0x001000	/* on-chip Flash */
   //FLASH_BANK0_SEC10 : origin = 0x08A000, length = 0x001000	/* on-chip Flash */
   //FLASH_BANK0_SEC11 : origin = 0x08B000, length = 0x001000	/* on-chip Flash */
   //FLASH_BANK0_SEC12 : origin = 0x08C000, length = 0x001000	/* on-chip Flash */
   //FLASH_BANK0_SEC13 : origin = 0x08D000, length = 0x001000	/* on-chip Flash */

   FLASH_BANK0_SEC6_SEC613 : origin = 0x086002, length = 0x007FFE
   FLASH_BANK0_SEC14 : origin = 0x08E000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC15 : origin = 0x08F000, length = 0x001000	/* on-chip Flash */

   /* BANK 1 */
   FLASH_BANK1_SEC0  : origin = 0x090000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC1  : origin = 0x091000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC2  : origin = 0x092000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC3  : origin = 0x093000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC4  : origin = 0x094000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC5  : origin = 0x095000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC6  : origin = 0x096000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC7  : origin = 0x097000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC8  : origin = 0x098000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC9  : origin = 0x099000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC10 : origin = 0x09A000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC11 : origin = 0x09B000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC12 : origin = 0x09C000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC13 : origin = 0x09D000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC14 : origin = 0x09E000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC15 : origin = 0x09F000, length = 0x001000	/* on-chip Flash */

PAGE 1 :

   BOOT_RSVD        : origin = 0x000002, length = 0x0000F3     /* Part of M0, BOOT rom will use this for stack */
   RAMM1            : origin = 0x000400, length = 0x000400     /* on-chip RAM block M1 */

   //RAMLS1           : origin = 0x008800, length = 0x000800
   RAMLS1           : origin = 0x008C00, length = 0x000400
   RAMLS2           : origin = 0x009000, length = 0x000800
   RAMLS5           : origin = 0x00A800, length = 0x000800
   RAMLS6           : origin = 0x00B000, length = 0x000800
   RAMLS7           : origin = 0x00B800, length = 0x000800

   RAMGS0           : origin = 0x00C000, length = 0x002000
   RAMGS1           : origin = 0x00E000, length = 0x002000
   RAMGS2           : origin = 0x010000, length = 0x002000
   RAMGS3           : origin = 0x012000, length = 0x002000

   CLA1_MSGRAMLOW   : origin = 0x001480, length = 0x000080
   CLA1_MSGRAMHIGH  : origin = 0x001500, length = 0x000080
}


SECTIONS
{
   .cinit           : > FLASH_BANK1_SEC0,     PAGE = 0, ALIGN(4)
   .text            : > FLASH_BANK0_SEC6_SEC613,   PAGE = 0, ALIGN(4)
   codestart        : > BEGIN       PAGE = 0, ALIGN(4)
   .stack           : > RAMM1        PAGE = 1
   .switch          : > FLASH_BANK1_SEC1,     PAGE = 0, ALIGN(4)

   .pinit           : > FLASH_BANK1_SEC4,       PAGE = 0,       ALIGN(4)
   .ebss            : >>RAMLS1 | RAMLS2 | RAMLS5 | RAMLS6 | RAMLS7 | RAMGS0 | RAMGS1 | RAMGS2 | RAMGS3 ,       PAGE = 1
   .esysmem         : > RAMLS6,       PAGE = 1
   .cio             : > RAMLS5,       PAGE = 1
   .econst          : > FLASH_BANK1_SEC5,    PAGE = 0, ALIGN(4)

   ramgs0           : > RAMGS0,    PAGE = 1
   ramgs1           : > RAMGS1,    PAGE = 1

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

    /* CLA specific sections */
    Cla1Prog        : LOAD = FLASH_BANK0_SEC14,
                      RUN = RAMLS0,
                      LOAD_START(_Cla1ProgLoadStart),
                      RUN_START(_Cla1ProgRunStart),
                      LOAD_SIZE(_Cla1ProgLoadSize),
                      PAGE = 0, ALIGN(4)

#if(1)
    SFRA_F32_Data    : > RAMLS5, ALIGN = 64, PAGE = 1
    FPUmathTables    : > FLASH_BANK1_SEC6,   PAGE =0
#endif

    Cla1ToCpuMsgRAM  : > CLA1_MSGRAMLOW,   PAGE = 1
    CpuToCla1MsgRAM  : > CLA1_MSGRAMHIGH,  PAGE = 1

   /* copy F021_API_F28004x_FPU32.lib to RAM, and RAMLS4 add to 0x2000kW  */
   GROUP{
      .TI.ramfunc
      {-l ../CSW_CODE/FlashDriverslib/lib/F021_API_F28004x_FPU32.lib}
   } LOAD = FLASH_BANK0_SEC15,
      RUN = RAMLS4,
      LOAD_START(_RamfuncsLoadStart),
      LOAD_SIZE(_RamfuncsLoadSize),
      LOAD_END(_RamfuncsLoadEnd),
      RUN_START(_RamfuncsRunStart),
      RUN_SIZE(_RamfuncsRunSize),
      RUN_END(_RamfuncsRunEnd),
      PAGE = 0, ALIGN(4)


   .scratchpad      : > RAMLS1,           PAGE = 1
   .bss_cla         : > RAMLS1,           PAGE = 1

   Cla1DataRam      : > RAMLS2,           PAGE = 1

   .const_cla      : LOAD = FLASH_BANK1_SEC7,
                      RUN = RAMLS3,
                      RUN_START(_Cla1ConstRunStart),
                      LOAD_START(_Cla1ConstLoadStart),
                      LOAD_SIZE(_Cla1ConstLoadSize),
                      PAGE = 0, ALIGN(4)
}

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

5383.map.zip

Because they used Flash API at the beginning, they don't want to modify it.

Thanks&Regards

Yale Li

0 Vamsi Gudivada over 3 years ago in reply to Yale Li 李耀先

TI__Guru* 87105 points

Yale,

You attached two map files - one says normal and another says trap. In both cases, flash API is copied to RAM and executed from RAM? Are both of those map files generated using the same linker cmd file (I understand there can be code changes)?

Are they erasing the flash sectors that have flash API in it?

Thanks and regards,

Vamsi

0 Yale Li 李耀先 over 3 years ago in reply to Vamsi Gudivada

TI__Expert 4660 points

Hi Vamsi,

Vamsi Gudivada said:
In both cases, flash API is copied to RAM and executed from RAM?

Yes.

Vamsi Gudivada said:
Are both of those map files generated using the same linker cmd file (I understand there can be code changes)?

Yes. The difference between these two program is:

The customer defined a empty function and this function is not called.

The program will enter into trap whatever he delete or comment this function in 'trap' program; But It will work normally when he keep it in 'norm' program.

No matter what he defines this function by any different name, the situation will not change.

Thanks&Regards

Yale Li

0 Vamsi Gudivada over 3 years ago in reply to Yale Li 李耀先

TI__Guru* 87105 points

Yale,

Ok.

Which sectors are they erasing?

Thanks and regards,
Vamsi

0 Yale Li 李耀先 over 3 years ago in reply to Vamsi Gudivada

TI__Expert 4660 points

Hi Vamsi,

They didn't perform the operation of erasing the flash.

Thanks&Regards

Yale Li

0 Vamsi Gudivada over 3 years ago in reply to Yale Li 李耀先

TI__Guru* 87105 points

Hi Yale,

Are they calling the memcpy() before calling any of the functions in the flash API?

Are they loading this code in to flash using the CCS flash plugin or some other tool?

Flash API usage has nothing to do with this.

Thanks and regards,

Vamsi

0 Yale Li 李耀先 over 3 years ago in reply to Vamsi Gudivada

TI__Expert 4660 points

Hi Vamsi,

Vamsi Gudivada said:
Are they calling the memcpy() before calling any of the functions in the flash API?

Yes.

Vamsi Gudivada said:
Are they loading this code in to flash using the CCS flash plugin or some other tool?

They are using CCS to load this program in to flash by default way.

Thanks & Regards,

Yale Li

0 Vamsi Gudivada over 3 years ago in reply to Yale Li 李耀先

TI__Guru* 87105 points

Yale,

Are they able to do step execution and find which instruction is causing the trap?

Thanks and regards,

Vamsi

0 Yale Li 李耀先 over 3 years ago in reply to Vamsi Gudivada

TI__Expert 4660 points

Hi Vamsi,

The customer has resolved this issue.

He compiled and linked both F021_ROM_API_F28004x_FPU32.lib and F021_API_F28004x_FPU32.lib in the project.

When he only keeps F021_ROM_API_F28004x_FPU32.lib, the program runs normally.

Thank you for your continued support!

Thanks & Regards

Yale Li

0 Vamsi Gudivada over 3 years ago in reply to Yale Li 李耀先

TI__Guru* 87105 points

Yale,

Thank you for the update. That's why I asked if the customer is using the ROM flash API. Glad it is known now.

Regards,

Vamsi

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F280049C-Q1: program enters interrupt void USER1_ISR(void) when using Flash API