TMS320F28027: Error on debug : Break at address "0x3ff7eb" with no debug information available, or outside of program code

Hi Richa,

Can you narrow down the specific line of code within your function is causing the break to occur? Please use breakpoints and single stepping (F5 key) to find the specific line of code. Also, checking the disassembler after the issue occurs does it show an ITRAP?

https://processors.wiki.ti.com/index.php/Interrupt_FAQ_for_C2000#The_ITRAP_Interrupt

best,

Kevin

Hey Kevin,

Thanks for your prompt reply!

I have attached the snap of my Code initialization.

Actually, after executing the FLASH_SETTING function, which contains the Flash API actions i.e. Version verification, Erase, Write, Verify, I am getting the error mentioned above.

As you rightly said, after checking the disassembler when the issue occurred I got this window:

3ff7e5:   561F        SETC         OBJMODE
3ff7e6:   7622        EALLOW       
3ff7e7:   B9C0        MOVZ         DP, #0x1c0
3ff7e8:   28290028    MOV          @0x29, #0x0028
3ff7ea:   761A        EDIS         
3ff7eb:   6F00        SB           0, UNC
3ff7ec:   FFFF        ITRAP1       
3ff7ed:   FFFF        ITRAP1       
3ff7ee:   FFFF        ITRAP1       
3ff7ef:   FFFF        ITRAP1       
3ff7f0:   FFFF        ITRAP1       
3ff7f1:   FFFF        ITRAP1       
3ff7f2:   FFFF        ITRAP1       
3ff7f3:   FFFF        ITRAP1       
3ff7f4:   FFFF        ITRAP1       
3ff7f5:   FFFF        ITRAP1       

• Initialization Code Snap

InitSysCtrl();

// Step 2. Initalize GPIO:
   Gpio_setup1();
   read__flash_location();
   FLASH_SETTINGS();

   EALLOW;
   SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0;
   EDIS;
   
   ConfigurePWM();
   SetPwmLow();
   
   EALLOW;
   SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1;
   EDIS;

   INIT_INTERRUPT();
   INIT_PERIPHERALS();

   CpuTimer0Regs.TCR.all = 0x4001;
   CpuTimer2Regs.TCR.all = 0x4001;

//   read__flash_location();

   INIT_VARIABLE();

   I2CA_Init();
   I2caRegs.I2CSAR = SLAVE_ADD;
   Init_Lcd();
   LcdBlank();
   Lcd_Position(0, 0);

Meanwhile I am going through the link mentioned regarding the ITRAP. 

I humbly request you to help me out for the mentioned issue.

Regards,

Richa

Richa,

I think this would be related to the below line from the Wiki page I linked:

• Make sure that if any code is being loaded into flash and run from RAM that it is properly copied to RAM before the function is called.

Do you perform a Memcpy before the FLASH_SETTING function call, to move the relevant functions from Flash to RAM for execution? Note that the Flash API functions must be run from zero wait-state RAM.

Best,

Kevin