RTOS/TM4C129XNCZAD: It seems that my application is both SYS/BIOS and Non SYS/BIOS

Shlomo Hecht

Intellectual 330 points

Part Number: TM4C129XNCZAD
Other Parts Discussed in Thread: SYSBIOS

Tool/software: TI-RTOS

Hello. I am re-opening my question here: http://e2e.ti.com/support/microcontrollers/other/f/908/t/743426

it seems that my application is both SYS/BIOS and Non SYS/BIOS.

I have both heapmem and sysmem.

all dynamic allocations are going through sysmem. including some that I cannot trace.

the heapmem area is used a little right after start up, and then no new allocations are made.

I do want to trace the sysmem usage, because on some occasions I lose all my dynamic memory, and I do not know why. (the free list pointer has less than a 100 bytes).

what I define, what I see in the memory allocation

CFG:
BIOS.heapSize = 18000; // bios heapmem
Program.heap = 40000;
Program.stack = 4096;

memory allocation:
ti_sysbios_heaps_HeapMem_Instance_State_0_buf__A 18000
.sysmem 40000
.stack 4096

=======================
CFG:
BIOS.heapSize = 40000; // bios heapmem
//Program.heap = 40000;
Program.stack = 4096;

memory allocation:
ti_sysbios_heaps_HeapMem_Instance_State_0_buf__A 40000
.sysmem 4096
.stack 4096
===================
CFG:
BIOS.heapSize = 40000; // bios heapmem
//Program.heap = 40000;
//Program.stack = 4096;

memory allocation:
ti_sysbios_heaps_HeapMem_Instance_State_0_buf__A 40000
.sysmem 4096
.stack 4096
====================
CFG:
//BIOS.heapSize = 40000; // bios heapmem
Program.heap = 40000;
//Program.stack = 4096;
memory allocation:
ti_sysbios_heaps_HeapMem_Instance_State_0_buf__A 40000
.sysmem 40000
.stack 4096Embedded.cfg

over 6 years ago

0 Shlomo Hecht over 6 years ago

Intellectual 330 points

also, when tracing into malloc on run time I am directed to C:\ti\ccsv7\tools\compiler\ti-cgt-arm_16.9.6.LTS\lib\src\memory.c.
but, on the edit window I am directed to C:\Twine Code\Tango\software\Embedded_SW\Embedded\Debug\configPkg\package\cfg\embedded_pem4f.c, which includes a tottaly different funnction, imported from ti.sysbios.rts.MemAlloc

0 ToddMullanix over 6 years ago in reply to Shlomo Hecht

TI__Guru* 96960 points

Shlomo,

I tried your .cfg and don't see a .sysmem section. Can you attach your application linker file? Also what TI-RTOS version are you using and what compiler (and version) are you using?

Todd

0 ToddMullanix over 6 years ago in reply to ToddMullanix

TI__Guru* 96960 points

Did this get resolved?

0 Shlomo Hecht over 6 years ago in reply to ToddMullanix

Intellectual 330 points

I have removed Heapstd, Heapmem and memory from the cfg file, as well as the definitions for program.heap and program.stack

now I have only the heap without sysmem, memory is allocated only there through the xdc malloc function.

I do have a problem with DFU detach, which might be related.

anyway, I saved myself some precious 30k of RAM, and many of the SW crashes have gone.

I would still be very happy to understand better what is going on under the hood.

0 ToddMullanix over 6 years ago in reply to Shlomo Hecht

TI__Guru* 96960 points

Hi Shlomo,

I'd like to understand it also, but I could not reproduce it:( I'm going to mark this as TI Thinks Resolved since I don't know what else I can do.

Todd

0 Shlomo Hecht over 6 years ago in reply to ToddMullanix

Intellectual 330 points

As of now, I do agree that the subject is resolved.

I can upload the project file, or if you visit Israel anytime soon...

I will reopen it if there are any other questions.

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RTOS/TM4C129XNCZAD: It seems that my application is both SYS/BIOS and Non SYS/BIOS