TMS570LC4357: How to read stack overflow in the SW

Hi Manoraj Selvaraj,

If you are using TI Code Composer Studio, it offers a Stack Usage view option as shown on this page: Stack Usage View in CCS (ti.com)., viewable using View menu on CCS v12

.

Other options such as Watchpoint Breakpoints are also available in CCS to use in order to track for this purpose as detailed for unrelated products on Checking for Stack Overflow with CCS (ti.com).

I hope it helps with checking Stack Overflow on CCS with your Hercules MCU.

Hi Manoraj, 

You can use MPU overlapping regions and subregions for stack protection.

Please refer to section 7.1.2 of ARM Cortex-R5 TRM

https://developer.arm.com/documentation/ddi0460/latest/

Thanks QJ Wang

QJ Wang,

How to set the least-significant subregion disable bit( like below configuration)?

Regards,

Manoraj Selvaraj

Hi QJ Wang

okay.

what is background fault ?

is this background fault?

Regards,

Manoraj Selvaraj

It indicates that a data abort happens. I am not sure it is MPU background fault or not.

 An access to a memory address in a disabled sub-region uses the attributes and permissions of a lower priority region or generates a background fault if no other regions overlap at that address. 

Please check the value of C15 Data Fault Status Register (DFSR).

Okay QJ Wang

Then where to see  background fault?

Regards,

Manoraj Selvaraj

It may be a data abort. You can check the fault flag in DFSR register.