RTOS/EK-TM4C1294XL: RTOS/EK-TM4C1294XL

Neil Lu

Part Number: EK-TM4C1294XL

Tool/software: TI-RTOS

After downloading gpiointerrupt_EK_TM4C1294XL_TI project, I built and loaded the program into the board. Everything is fine, but the Stack Usage shows nothing and are all these functions, including main(), inline now?

over 6 years ago

0 Bob Crosby over 6 years ago

TI__Guru 72500 points

I am not sure how you determined the stack is not being used. When I compile that example with CGT 18.12.2, the main stack is 0x300 bytes from 0x20001858 to 0x20001B54. The stack RAM was initialized to 0xBEBEBEBE. After running to main(), I can see that the stack decremented down to 0x20001aa4. That shows 180 bytes of stack was used.

After running to "BIOS_start()", 416 bytes of stack was used.

0 Neil Lu over 6 years ago in reply to Bob Crosby

Intellectual 610 points

Great thanks, Bob, for 1) very fast response; 2) Use memory view to confirm the program does work well; 3) Maybe we find a bug in CCS now because when I was using "View/Stack Usage" in CCS, the Stack Usage show nothing. Can you try Stack Usage to see the CCS shows the same as you showed here.

When I use Stack Usage for blicky project without TI-RTOS, it works well, but if working on TI-RTOS, it shows nothing. can you show me the Stack Usage works with TI-RTOS? I am looking forward to hearing you soon. Thanks,

0 Bob Crosby over 6 years ago in reply to Neil Lu

TI__Guru 72500 points

Neil,
I am going to send this question to the TI-RTOS team. I know TI-RTOS uses separate stacks for each task.

0 Neil Lu over 6 years ago in reply to Bob Crosby

Intellectual 610 points

Thanks, Bob,

0 ToddMullanix over 6 years ago in reply to Neil Lu

TI__Guru* 96960 points

Hi Neil,

Take a look at the beginning of this training video/pdf. It covers how to see system and task stack usage in TI-RTOS: training.ti.com/debugging-common-application-issues-ti-rtos

Todd

0 Neil Lu over 6 years ago in reply to ToddMullanix

Intellectual 610 points

Hi, Todd, In your training instruction and In MEMORY ALLOCATION, you mentioned that "a smart heap on top of the system/default heap is called HeapTrack" and "HeapTack in ROV displays all the allocated blocks by the tasks that allocated the blocks and by the heap."

Q1. Do all the displayed data in ROV for the HeapMem and HeapBuf, such as, totalSize, totalFreeSize, etc. come from HeapTrack or is collected by HeapBuf? another word, It is the HeapMem that provides all the Memory heap information for ROV to display.

Q2. What is the relationship HeapTrack and ROV's HeapBuf and HeapMem ?

Q3. From the example of memory.c, it seems that system heap and HeapBuf & HeapMem are different memories. Is system heap only used by TI-RTOS? or application can molloc the system also? How applications allocate and use system heap?

Thanks,

Neil

0 ToddMullanix over 6 years ago in reply to Neil Lu

TI__Guru* 96960 points

I answered the questions in this thread: https://e2e.ti.com/support/microcontrollers/other/f/908/p/807651/2994854#2994854

I'm closing this one to remove duplication.

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RTOS/EK-TM4C1294XL: RTOS/EK-TM4C1294XL