RTOS/CC2650: App/BLE Stack change priority of ICall_init(), and GAP

Intellectual 450 points
Anthony Andreoli

Part Number: CC2650

Tool/software: TI-RTOS

Hello,

I would like to change the priority of  ICall_createRemoteTasks(); from 5 to a number higher, and insert some of my own custom RTOS tasks of lower priority. The way main.c (that comes with sample peripheral) is written, priorities 5, 3, and 1 are already taken, not leaving much for custom tasks (especially considering that we are advised to not have any tasks with a priority higher than the BLE task). I have two tasks, a sensor controller data retrieval task (higher priority), and a data processing task (lower priority). How can i add these into the app/ble stack projects successfully if the maximum priority we have access to is 4? (AKA - can we change the priority of the predefined tasks?) Thanks

 /* Initialize ICall module */
  ICall_init();
 
  /* Start tasks of external images - Priority 5 */
  ICall_createRemoteTasks();
 
  /* Kick off profile - Priority 3 */
  GAPRole_createTask();
 
  SimpleBLEPeripheral_createTask();
 
  /* enable interrupts and start SYS/BIOS */
  BIOS_start();
 

 

Intellectual 450 points
Anthony Andreoli
  • Guru 83255 points
    JXS
    Hello,

    The number of task priorities is defined in the RTOS configuration file, e.g., appBLE.cfg for BLE projects.
    Note that adding more tasks requires more RAM for task stacks and RTOS objects.

    Best wishes

    Please see the TI BLE Wiki www.ti.com/ble-wiki and sticky forum threads for additional examples & answers to most common questions!

    Thank you for marking the thread as answered if your question was answered :)

  • Intellectual 450 points
    Anthony Andreoli

    In reply to JXS:

    I understand i can change the number of tasks, but how do i change the piority of the predefined ICall_createRemoteTasks(). Can you please refer me to some decent documentation on this subject because it is furstratingly thick and non-user friendly
  • Guru 83255 points
    JXS

    In reply to Anthony Andreoli:

    Hello Anthony,

    We do not publish documentation on how to change the ICall (BLE) task priority, however, with a quick "find in files" search, you can find this entry in icall_addrs.h:

    **
    * Initializer for an array of thread priorities.
    * Each element of the array corresponds to TI-RTOS specific
    * thread priority value given to a thread to be created
    * per the entry function defined in @ref ICALL_ADDR_MAPS
    * initializer, in the same sequence.
    */
    #define ICALL_TASK_PRIORITIES { 5 }

    Changing this param will change the task priority that is used to create the task. It is still YMMV as we do not recommend (or test) changing the priority of the BLE task.

    Best wishes

    Please see the TI BLE Wiki www.ti.com/ble-wiki and sticky forum threads for additional examples & answers to most common questions!

    Thank you for marking the thread as answered if your question was answered :)

  • Intellectual 450 points
    Anthony Andreoli

    In reply to JXS:

    That is very clear, however, how does TI expect users to run OTHER tasks  to run in threads alongside the Bluetooth tasks(like pulling data from the sensor controller, and processing this data) if running Bluetooth requires 1) Not altering pre-defined priorities 2) No priorities are allowed to be above the BLE protocol priority {5} 3) Only having priorities 2 and 4 remaining as Bluetooth uses 1, 3, and 5.

  • Guru 83255 points
    JXS

    In reply to Anthony Andreoli:

    It's not practical to run more than 2 additional RTOS tasks due to memory resource requirements, mostly on the task stack size. You can move GAPRole task to priority 4 without any issues in the default sample applications.

    Best wishes

    Please see the TI BLE Wiki www.ti.com/ble-wiki and sticky forum threads for additional examples & answers to most common questions!

    Thank you for marking the thread as answered if your question was answered :)

All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.

Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Terms of Use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of Use of this site. TI, its suppliers and providers of content reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.

TI Worldwide | Contact Us | my.TI Login | Site Map | Corporate Citizenship | mobile m.ti.com (Mobile Version)

TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs and
embedded processors, along with software, tools and the industry’s largest sales/support staff.

© Copyright 1995-2017 Texas Instruments Incorporated. All rights reserved.
Trademarks | Privacy Policy | Terms of Use