CCS/MSP432P401R: How to increase stack size of the RTOS application.

Keshav Aggarwal

Part Number: MSP432P401R

Tool/software: Code Composer Studio

Hello All,

I'm working on MSP432P401R TI-RTOS application. I'm unable to increase stack size for my application thread.

I have tried changing from linker options, MSP_EXP432P401R_TIRTOS.cmd file and THREADSTACKSIZE as well but nothing worked. It's showing 504 all the time. When I hover the cursor on mainThread it shows 504 out of 504 bytes used (100%).

Please correct me if I am wrong.

Please find the attached screenshots.

Regards,

Keshav Aggarwal

over 5 years ago

0 ToddMullanix over 5 years ago

TI__Guru* 96960 points

Hi Keshav,

First let's make sure we are talking about the right stack. There are two different types of stacks with TI-RTOS:

System stack: Used by interrupts
Task stacks: each task gets a dedicated stack.

Another point: a POSIX thread is really just a TI-RTOS task.

System Stack

The system stack can be set in two different methods:

1. Via the Program.stack setting in the .cfg file. Note: if this value is 0, the next method is used...

2. Via the --stack_size linker option. Note: we include this setting in the linker files for the examples and it overrides the project properties setting.

Task Stacks

Task stacks cannot be set via a compiler setting or via the linker file. The task stack size of a task is set at creation. For example:

    Task_Params_init(&taskParams);
    taskParams.stackSize = THREADSTACKSIZE;
    taskParams.priority = 1;
    consoleHandle = Task_create((Task_FuncPtr)consoleThread, &taskParams, Error_IGNORE);

Or if you are using the pthread APIS:

    pthread_attr_init(&attrs);

    ...
    retc |= pthread_attr_setstacksize(&attrs, THREADSTACKSIZE);
    ...
    retc = pthread_create(&thread, &attrs, mainThread, NULL);

Unless a task stack is provided (via Task_Params's stack or via pthread_attr_setstack), a stack will be allocated, by default, from the system heap.

Here is some more training about stack usage: https://training.ti.com/debugging-common-application-issues-ti-rtos

Todd

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CCS/MSP432P401R: How to increase stack size of the RTOS application.