# \#trace **URL:** https://forums.freertos.org/tag/trace/3.md [Latest](https://forums.freertos.org/latest.md) · [Categories](https://forums.freertos.org/categories.md) · [Tags](https://forums.freertos.org/tags.md) --- ## [Differences Between GPS Heading Data and Online Compass Readings](https://forums.freertos.org/t/differences-between-gps-heading-data-and-online-compass-readings/25099)
**Author:** [@im\_Irja](https://forums.freertos.org/u/im_Irja)\ **Replies:** 1\ **Last updated:** [July 28, 2026, 1:59pm UTC](https://forums.freertos.org/t/differences-between-gps-heading-data-and-online-compass-readings/25099 "2026-07-28T13:59:59Z")
I am using a device with FreeRTOS that receives GPS information, and I have noticed that the direction values do not always match when I compare them with an online compass tool. The online compass uses the device’s GPS … --- ## [New free trace tool from Percepio](https://forums.freertos.org/t/new-free-trace-tool-from-percepio/22678)
**Author:** [@johankraft](https://forums.freertos.org/u/johankraft)\ **Replies:** 4\ **Last updated:** [July 16, 2026, 8:31am UTC](https://forums.freertos.org/t/new-free-trace-tool-from-percepio/22678 "2026-07-16T08:31:12Z")
Percepio has just released Percepio View, a new simplified version of Percepio Tracealyzer, provided free of charge also for commercial use. No registration is required. A reference project for Percepio View is found… --- ## [SEGGER Ozone FreeRTOS Awareness Plugin for TMS570LC4357 (Cortex-R5F) - Example Projects or Resources](https://forums.freertos.org/t/segger-ozone-freertos-awareness-plugin-for-tms570lc4357-cortex-r5f-example-projects-or-resources/25039)
**Author:** [@Electronics](https://forums.freertos.org/u/Electronics)\ **Replies:** 1\ **Last updated:** [June 10, 2026, 10:33am UTC](https://forums.freertos.org/t/segger-ozone-freertos-awareness-plugin-for-tms570lc4357-cortex-r5f-example-projects-or-resources/25039 "2026-06-10T10:33:18Z")
Hi All I am planning to use SEGGER J-Trace PRO with Ozone for real-time trace and RTOS awareness debugging on TI TMS570LC4357 MCU. I understand that Ozone’s built-in FreeRTOS awareness plugins do not natively support C… --- ## [Need to increase the duration of trace data using CCS-percepio Using Snapshotmode](https://forums.freertos.org/t/need-to-increase-the-duration-of-trace-data-using-ccs-percepio-using-snapshotmode/23848)
**Author:** [@Namana](https://forums.freertos.org/u/Namana)\ **Replies:** 14\ **Last updated:** [September 14, 2025, 3:38pm UTC](https://forums.freertos.org/t/need-to-increase-the-duration-of-trace-data-using-ccs-percepio-using-snapshotmode/23848 "2025-09-14T15:38:01Z")
Hi, I’m using AM6442, R5 core as a main processor to communicate with percepio-CCS. #define TRC\_CFG\_STREAM\_PORT\_BUFFER\_SIZE 1024 \* 29 when I’m trying to save the snapshot trace in CCS tool. I’m able to save the buffe… --- ## [Can I write Driver function access gpio at constant rate in task handler function](https://forums.freertos.org/t/can-i-write-driver-function-access-gpio-at-constant-rate-in-task-handler-function/23069)
**Author:** [@varma](https://forums.freertos.org/u/varma)\ **Replies:** 1\ **Last updated:** [May 8, 2025, 12:58pm UTC](https://forums.freertos.org/t/can-i-write-driver-function-access-gpio-at-constant-rate-in-task-handler-function/23069 "2025-05-08T12:58:51Z")
Can I write Driver function access gpio at constant rate in task handler function If i write so, is there any problem for switching or yielding of the task --- ## [Preemptive Scheduling without time slicing](https://forums.freertos.org/t/preemptive-scheduling-without-time-slicing/22984)
**Author:** [@varma](https://forums.freertos.org/u/varma)\ **Replies:** 3\ **Last updated:** [April 29, 2025, 4:29pm UTC](https://forums.freertos.org/t/preemptive-scheduling-without-time-slicing/22984 "2025-04-29T16:29:00Z")
I have created three tasks Task1 , Task2, Task3 Task1 has highest priority 3, Task2 has second highst priority 2 Task3 has third priority 1 Freertos Configurations: #define configUSE\_PREEMPTION 1 … --- ## [Does freertos tasks switch based on that tick?](https://forums.freertos.org/t/does-freertos-tasks-switch-based-on-that-tick/22960)
**Author:** [@varma](https://forums.freertos.org/u/varma)\ **Replies:** 3\ **Last updated:** [April 21, 2025, 2:36pm UTC](https://forums.freertos.org/t/does-freertos-tasks-switch-based-on-that-tick/22960 "2025-04-21T14:36:29Z")
Difference between vTaskDelay(1) and vTaskDelay( pdMS\_TO\_TICKS( 1 ) ); How both will work ? Does freertos tasks switch based on that tick ? or not ? Suppose, I have three tasks 1ms , 5ms and 10ms tasks, how tasks will… --- ## [Tasks aren't switching](https://forums.freertos.org/t/tasks-arent-switching/22947)
**Author:** [@varma](https://forums.freertos.org/u/varma)\ **Replies:** 10\ **Last updated:** [April 17, 2025, 4:00pm UTC](https://forums.freertos.org/t/tasks-arent-switching/22947 "2025-04-17T16:00:48Z")
I created three tasks with 1ms, 5ms and 10ms Priorities 1st scenario : 1ms - 1st task has highest priority 5ms - 2nd Priority 10ms - 3rd priority Tasks aren’t switching after 1ms task, only 1ms task is running and … --- ## [Getting this error IfxCpu\_Trap\_contextManagementError](https://forums.freertos.org/t/getting-this-error-ifxcpu-trap-contextmanagementerror/22853)
**Author:** [@varma](https://forums.freertos.org/u/varma)\ **Replies:** 1\ **Last updated:** [April 7, 2025, 5:46am UTC](https://forums.freertos.org/t/getting-this-error-ifxcpu-trap-contextmanagementerror/22853 "2025-04-07T05:46:58Z")
I am trying port freertos to the TC233 Controller on HighTec IDE, I am getting this error at TriCore\_\_mtcr( TRICORE\_CPU\_ICR, ulICR ); /\* Load the lower context, upper context is loaded through the return \*/ TriC… --- ## [I have encountered some issues while debugging freertos tasks](https://forums.freertos.org/t/i-have-encountered-some-issues-while-debugging-freertos-tasks/22814)
**Author:** [@varma](https://forums.freertos.org/u/varma)\ **Replies:** 2\ **Last updated:** [March 26, 2025, 10:37am UTC](https://forums.freertos.org/t/i-have-encountered-some-issues-while-debugging-freertos-tasks/22814 "2025-03-26T10:37:51Z")
1.selected tc233 controller and created a new project on Aurix Development studio 2. downloaded freertos and Imported the FreeRTOS source code to newly created project. 3.I made some modifications to the FreeRTOS setti… --- ## [Analyzing FreeRTOS trace recorder data with Trace Compass](https://forums.freertos.org/t/analyzing-freertos-trace-recorder-data-with-trace-compass/20655)
**Author:** [@bitsnstuff](https://forums.freertos.org/u/bitsnstuff)\ **Replies:** 12\ **Last updated:** [March 13, 2025, 7:28am UTC](https://forums.freertos.org/t/analyzing-freertos-trace-recorder-data-with-trace-compass/20655 "2025-03-13T07:28:59Z")
I made a tool to convert FreeRTOS trace recorder traces to CTF, primarily to take advantage of the existing LTTng kernel analyses in trace compass for a personal project. It’s still very much in the prototype stage, an… --- ## [How to view freeRTOS Statistics (Trace) on Kiel uVision?](https://forums.freertos.org/t/how-to-view-freertos-statistics-trace-on-kiel-uvision/22695)
**Author:** [@botta](https://forums.freertos.org/u/botta)\ **Replies:** 3\ **Last updated:** [March 12, 2025, 1:28pm UTC](https://forums.freertos.org/t/how-to-view-freertos-statistics-trace-on-kiel-uvision/22695 "2025-03-12T13:28:10Z")
Hi, I use Keil uVision to develop Microcontroller Softwares. I use freeRTOS as default RTOS and I wanted to know if there is a way to view freeRTOS statistics like current threads, memory usage, etc… I know that using … --- ## [Does Freertos support on TC233L controller](https://forums.freertos.org/t/does-freertos-support-on-tc233l-controller/22715)
**Author:** [@varma](https://forums.freertos.org/u/varma)\ **Replies:** 1\ **Last updated:** [March 12, 2025, 1:21pm UTC](https://forums.freertos.org/t/does-freertos-support-on-tc233l-controller/22715 "2025-03-12T13:21:28Z")
I wanted to port freertos on Aurix TC233L controller, Does it support freertos If supports which Development IDE do we need to use --- ## [Guide on FreeRTOS 11 SMP tracing with Tracealyzer (TI AM62x example)](https://forums.freertos.org/t/guide-on-freertos-11-smp-tracing-with-tracealyzer-ti-am62x-example/21905)
**Author:** [@johankraft](https://forums.freertos.org/u/johankraft)\ **Replies:** 1\ **Last updated:** [December 3, 2024, 8:27pm UTC](https://forums.freertos.org/t/guide-on-freertos-11-smp-tracing-with-tracealyzer-ti-am62x-example/21905 "2024-12-03T20:27:00Z")
FreeRTOS 11 introduced symmetric multi-processing (SMP) support in the mainline kernel, meaning a single FreeRTOS kernel is managing multiple processor cores. This allows for high performance but also makes the runtime s… --- ## [CLI tool for FreeRTOS TraceRecorder streaming port (psf) trace data files](https://forums.freertos.org/t/cli-tool-for-freertos-tracerecorder-streaming-port-psf-trace-data-files/21924)
**Author:** [@bitsnstuff](https://forums.freertos.org/u/bitsnstuff)\ **Replies:** 2\ **Last updated:** [November 21, 2024, 4:48am UTC](https://forums.freertos.org/t/cli-tool-for-freertos-tracerecorder-streaming-port-psf-trace-data-files/21924 "2024-11-21T04:48:03Z")
I often find myself wanting to do quick sanity checks using FreeRTOS trace data so I wrote a little CLI for printing TraceRecorder streaming data files (events, symbol table, runtime stats, etc). --- ## [Tracealyzer Tips and Tricks for FreeRTOS users](https://forums.freertos.org/t/tracealyzer-tips-and-tricks-for-freertos-users/21750)
**Author:** [@johankraft](https://forums.freertos.org/u/johankraft)\ **Replies:** 0\ **Last updated:** [October 31, 2024, 1:28pm UTC](https://forums.freertos.org/t/tracealyzer-tips-and-tricks-for-freertos-users/21750 "2024-10-31T13:28:45Z")
There have been significant improvements in Tracealyzer over the last years. If you haven’t tried it in a while—or if you’re just getting started—here are some tips and tricks that can be handy when analyzing your FreeRT… --- ## [Trace Hook Macros and MPU](https://forums.freertos.org/t/trace-hook-macros-and-mpu/21669)
**Author:** [@HenryC](https://forums.freertos.org/u/HenryC)\ **Replies:** 2\ **Last updated:** [October 21, 2024, 5:17am UTC](https://forums.freertos.org/t/trace-hook-macros-and-mpu/21669 "2024-10-21T05:17:26Z")
Hello, I am a university student and I am investigating security hardening capabilities on FreeRTOS for my thesis. I am planning to use an MPU to separate the kernel and application code into privileged and unprivileged… --- ## [FreeRTOS Trace Macros Usage](https://forums.freertos.org/t/freertos-trace-macros-usage/21586)
**Author:** [@bragin-d](https://forums.freertos.org/u/bragin-d)\ **Replies:** 3\ **Last updated:** [October 10, 2024, 5:50am UTC](https://forums.freertos.org/t/freertos-trace-macros-usage/21586 "2024-10-10T05:50:23Z")
Hello, everyone! I have a problem with the trace macros. The goal is to be able to record the logs when the tasks are switched or created/deleted, and then visualise it in chrome://tracing. The idea was to define the mac… --- ## [Saving FreeRTOS traces with GDB or Eclipse](https://forums.freertos.org/t/saving-freertos-traces-with-gdb-or-eclipse/20803)
**Author:** [@johankraft](https://forums.freertos.org/u/johankraft)\ **Replies:** 0\ **Last updated:** [June 23, 2024, 6:49pm UTC](https://forums.freertos.org/t/saving-freertos-traces-with-gdb-or-eclipse/20803 "2024-06-23T18:49:07Z")
New video tutorial on how to use Percepio Tracealyzer and GDB for easy FreeRTOS tracing. For those using an Eclipse-based IDE, the video also shows how to use the Trace Exporter plugin. --- ## [TCP connection issue (SYN lost)](https://forums.freertos.org/t/tcp-connection-issue-syn-lost/20716)
**Author:** [@pistoletov1974](https://forums.freertos.org/u/pistoletov1974)\ **Replies:** 14\ **Last updated:** [June 19, 2024, 11:03am UTC](https://forums.freertos.org/t/tcp-connection-issue-syn-lost/20716 "2024-06-19T11:03:28Z")
I try to run MQTT agent demo with plain\_text transport on my cortex m4 board. Board succesfully receive DHCP, DNS requests but i did not see any SYN packets in wireshark. How i can trace more detailed my issue? This p… --- ## [For STM32 users, new guide on Tracealyzer setup with STM32CubeIDE](https://forums.freertos.org/t/for-stm32-users-new-guide-on-tracealyzer-setup-with-stm32cubeide/20683)
**Author:** [@johankraft](https://forums.freertos.org/u/johankraft)\ **Replies:** 0\ **Last updated:** [June 12, 2024, 6:53am UTC](https://forums.freertos.org/t/for-stm32-users-new-guide-on-tracealyzer-setup-with-stm32cubeide/20683 "2024-06-12T06:53:33Z")
Updated guide for setting up tracing with Tracealyzer on STM32, including a new video and instructions for new GDB integration. --- ## [Tracing Improvements](https://forums.freertos.org/t/tracing-improvements/20097)
**Author:** [@schilkp](https://forums.freertos.org/u/schilkp)\ **Replies:** 16\ **Last updated:** [June 10, 2024, 6:47am UTC](https://forums.freertos.org/t/tracing-improvements/20097 "2024-06-10T06:47:00Z")
Hi! After my last post and pr I have continued to work with the tracing API and found a few more details that I would like to address. Please let me know if you would be interested in PRs. As a little background: I am … --- ## [FreeRTOS V11 SystemView Tracing - Function # Event Meaning](https://forums.freertos.org/t/freertos-v11-systemview-tracing-function-event-meaning/20141)
**Author:** [@linusdecker](https://forums.freertos.org/u/linusdecker)\ **Replies:** 4\ **Last updated:** [May 27, 2024, 6:49am UTC](https://forums.freertos.org/t/freertos-v11-systemview-tracing-function-event-meaning/20141 "2024-05-27T06:49:42Z")
This is very possibly a question for SEGGER & not you guys but I can’t find anything in their documentation. Using FreeRTOS V11 and SEGGER SystemView, there is 1 event type called “Function #”. The detail column says “R… --- ## [Queue tracing](https://forums.freertos.org/t/queue-tracing/20054)
**Author:** [@schilkp](https://forums.freertos.org/u/schilkp)\ **Replies:** 4\ **Last updated:** [May 17, 2024, 5:28pm UTC](https://forums.freertos.org/t/queue-tracing/20054 "2024-05-17T17:28:56Z")
Hi! Thank you for the amazing software. I have been using FreeRTOS for many years. For a course I am developing I was playing around with the tracing hooks, and after spending some time with it I don’t see a ‘proper’ w… --- ## [FreeRTOS Timer Hard Fault Stm32](https://forums.freertos.org/t/freertos-timer-hard-fault-stm32/19644)
**Author:** [@Tumyq](https://forums.freertos.org/u/Tumyq)\ **Replies:** 17\ **Last updated:** [April 9, 2024, 4:28am UTC](https://forums.freertos.org/t/freertos-timer-hard-fault-stm32/19644 "2024-04-09T04:28:28Z")
Hello Dear Community, Recently I’ve faced with an unpredictable issue. I was working on my project with a few tasks, queues and timers and caught a happy HARD FAULT!!! I’ve spend days to analyze what could be wrong wi… --- ## [xQueueCreate and Que Operations](https://forums.freertos.org/t/xqueuecreate-and-que-operations/19505)
**Author:** [@Manu1](https://forums.freertos.org/u/Manu1)\ **Replies:** 1\ **Last updated:** [March 9, 2024, 5:16am UTC](https://forums.freertos.org/t/xqueuecreate-and-que-operations/19505 "2024-03-09T05:16:22Z")
Hi we have created 2 RAM\_D1 and RAM\_D2 we have used RAM\_D1. We need to use RAM\_D2 in STM32CubeIde. We need to use Queue in freeRTOS where we have to use RAM\_D2. can we create Queue by using xQueue Create in RAM\_D2 seci… --- ## [Possible to build Posix blinky without configUSE\_TRACE\_FACILITY?](https://forums.freertos.org/t/possible-to-build-posix-blinky-without-configuse-trace-facility/19432)
**Author:** [@PwnVerse](https://forums.freertos.org/u/PwnVerse)\ **Replies:** 4\ **Last updated:** [March 4, 2024, 1:10pm UTC](https://forums.freertos.org/t/possible-to-build-posix-blinky-without-configuse-trace-facility/19432 "2024-03-04T13:10:29Z")
Hi, I want to compile FreeRTOS Posix Blinky without the configUSE\_TRACE\_FACILITY set, this is because I want to use the compiled object files for some dynamic instrumentation I’ve been meaning to do for one of my project… --- ## [Behaviour of FreeRTOS when a task crashes](https://forums.freertos.org/t/behaviour-of-freertos-when-a-task-crashes/18386)
**Author:** [@EswarKeshav](https://forums.freertos.org/u/EswarKeshav)\ **Replies:** 15\ **Last updated:** [October 23, 2023, 12:47pm UTC](https://forums.freertos.org/t/behaviour-of-freertos-when-a-task-crashes/18386 "2023-10-23T12:47:28Z")
Hello all, I want to know the behavior of the microcontroller/ Freertos under the below hypothetical situation. If i am running two tasks on same or different priority.When one tasks get crashed because of stack overfl… --- ## [Add tracing functionality for all API calls](https://forums.freertos.org/t/add-tracing-functionality-for-all-api-calls/18007)
**Author:** [@Sebastian](https://forums.freertos.org/u/Sebastian)\ **Replies:** 8\ **Last updated:** [September 8, 2023, 1:09pm UTC](https://forums.freertos.org/t/add-tracing-functionality-for-all-api-calls/18007 "2023-09-08T13:09:34Z")
Hi, I would like to propose some additions to the Kernel, so different trace tools can be supported out-of-the-box. Current implementations usually only trace a few specific cases, which do not show much about the work… --- ## [WFI or WFE in place of idle loop](https://forums.freertos.org/t/wfi-or-wfe-in-place-of-idle-loop/17798)
**Author:** [@mastupristi](https://forums.freertos.org/u/mastupristi)\ **Replies:** 1\ **Last updated:** [July 12, 2023, 1:30am UTC](https://forums.freertos.org/t/wfi-or-wfe-in-place-of-idle-loop/17798 "2023-07-12T01:30:34Z")
For research purposes, trace, and to learn, I would like to try replacing the idle loop with WFI or WFE instructions. I usually have: configUSE\_PREEMPTION 1 configIDLE\_SHOULD\_YIELD 1 configUSE\_IDLE\_HOOK 0 config… [Next page](https://forums.freertos.org/tag/trace/3.md?match_all_tags=true&page=1&tags%5B%5D=trace)