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So far Percepio has created 168 blog entries.

ARM’s new RTOS gets visualization from Percepio

PRESS RELEASE Västerås, Sweden, 14th March 2017 *** Percepio AB, the leading specialist in software tracing tools for real-time operating systems, has been working closely with ARM to develop Tracealyzer for ARM® Keil® RTX5, the new RTOS in Keil MDK and ARM mbed™ OS. Tracealyzer for RTX5 is based on Percepio’s latest Tracealyzer v3.1 platform [...]

March 14th, 2017|Categories: Blog, News|

Tracealyzer for ThreadX and Renesas Synergy

Leading software tracing tool soon available for the ThreadX RTOS and Renesas Synergy PRESS RELEASE Västerås, Sweden, 14th March 2017 - Percepio AB, the leading specialist in software tracing tools for real-time operating systems has been working closely with Express Logic to develop Tracealyzer for ThreadX. ThreadX from Express Logic is a leading embedded RTOS [...]

March 14th, 2017|Categories: Blog, News|

Industry leaders form the Embedded Tools Alliance

PRESS RELEASE London, UK: Wed 8th March 2017 Today a number of industry leading companies in the embedded tools industry announce a new milestone in embedded system development - the Embedded Tools Alliance (ETA). The embedded developers' toolbox is complex and involves many components: IDE (Integrated Development Environment), compilers, debuggers, trace tools, test tools, debug [...]

March 8th, 2017|Categories: Blog, News|

Tracealyzer v3.1.1 – better Eclipse support!

Tracealyzer for FreeRTOS version 3.1.1 is now available on the download page. This is a maintenance release, following up the big v3.1.0 release in december. The main functional improvement is a new Eclipse plugin, making it more convenient to use Tracealyzer with Eclipse-based IDEs like SOMNIUM DRT, Simplicity Studio, and others. The plugin allows for reading trace snapshots via any debug [...]

March 3rd, 2017|Categories: Blog, News|

Common RTOS-related Bugs – How Avoid and Detect

Last month at Embedded Conference Scandinavia, Percepio founder Dr. Johan Kraft made a very well received presentation called "Common RTOS-related bugs – How to Avoid and Detect". The presentation covered RTOS basics, the motivations and challenges of using an RTOS, then dived into specific RTOS-related problems - their symptoms, how to avoid them and means [...]

December 14th, 2016|Categories: Blog|

Upgrading the Trace Recorder to v3.1

The improved trace recorder library is the biggest change in Tracealyzer v3.1, at least for FreeRTOS, Micrium and SafeRTOS. We have merged snapshot and streaming support into a single recorder module that support both modes, and improved the API and documentation to make it easier to use. If you are using an older version of the [...]

November 22nd, 2016|Categories: FAQ|Tags: , , , , , |

ECS 2016: Common RTOS-related Bugs – How Avoid and Detect

Join us as Embedded Conference Scandinavia (ECS), in Kista (Stockholm, Sweden), November 22-23. Percepio founder Dr. Johan Kraft will give a presentation titled "Common RTOS-related Bugs - How Avoid and Detect". The presentation is on the 23rd, at 09:15 - 10:00 (track 1/M1). See you there!   Abstract: Real-time [...]

November 17th, 2016|Categories: Blog|

The RTOS trend and the challenges of using an RTOS

Using an RTOS, or perhaps considering an RTOS for your next project? In that case, we recommend reading our article RTOS Trends and Challenges by Percepio founder Dr. Johan Kraft, featured on Embedded.com. The article discusses the strong RTOS trend in the embedded industry, including the motivations and fundamental challenges of using an RTOS, pitfalls that even caused NASA's JPL some serious problems during the [...]

October 27th, 2016|Categories: Blog|Tags: , , , |

RTOS Tracing, your way

When debugging an RTOS-based system, tracing can often give a better understanding that makes life easier. Percepio Tracealyzer provides two main types of RTOS tracing, snapshot and streaming, with sophisticated visualization. Both types of tracing have several options that allow developers to adjust the tracing setup to fit their target system and their analysis needs. [...]

October 5th, 2016|Categories: Blog|

RTOS 101: Semaphores and Queues

The use of a Real-Time Operating System (RTOS) is increasingly common in embedded software designs. An RTOS makes it easy to divide your code into smaller blocks, tasks, which execute seemingly in parallel and independent of each other, as described in the first article in the RTOS 101 series. Having fully independent tasks is [...]

August 11th, 2016|Categories: Blog|Tags: |

Tracealyzer for Micrium µC/OS-III

We are proud to announce the availability of Tracealyzer for µC/OS-III, targeting embedded software developers using Micrium's popular RTOS. In collaboration with Micrium we have also integrated support for Tracealyzer in the latest version of µC/OS-III (v3.0.6) which makes it very easy to get started. Tracealyzer for µC/OS-III visualizes the real-time behavior of the firmware running Micrium µC/OS-III and [...]

July 7th, 2016|Categories: Blog, News|Tags: , |

Customer Case: Mysterious Watchdog Reset

We collect examples of how Tracealyzer has been of used by our customers and have recreated these cases to illustrate the benefits of trace visualization for embedded software developers. In this case, a customer had an issue with a randomly occurring reset. By placing a break point in the reset exception handler, they figured out that it was [...]

June 29th, 2016|Categories: Blog|Tags: |

Using ST-Link for RTOS trace streaming

Have you ever tried recording what happens in an RTOS-based firmware to find some bug or tune the performance? You will quickly find that there is a lot of interesting stuff going on, like in the below view from Tracealyzer showing a 50 millisecond section of a much longer trace. There are plenty of interrupts and [...]

June 16th, 2016|Categories: Blog|Tags: , , |

ARM ITM: why you need a fast debug probe!

When developing embedded software, a good understanding of the real-time behavior is vital. At Percepio we develop the Tracealyzer tools for RTOS trace visualization, but this post is about a related technology from ARM that we believe is of general interest to any developer using ARM-based MCUs. Having some form of diagnostic logging/tracing is necessary in most [...]

June 9th, 2016|Categories: Blog|Tags: |

New website

We have just published our updated website, I hope you like the new design! There are a few issues remaining, especially the product pages don't look great at the moment. This will be fixed within the next days.

June 7th, 2016|Categories: Blog|

Tracing Exceptions on ARM Cortex-M MCUs

Software tracing comes in two main flavors, software-defined trace and hardware-defined trace. Hardware-defined trace means that the processor outputs a trace of low-level software events, such as control-flow branches and exceptions/interrupts. The resulting trace is very detailed and can therefore be overwhelming - you don't see the forest for all the trees! Software-defined trace means [...]

May 4th, 2016|Categories: Blog|Tags: |

Starting with FreeRTOS and Tracealyzer using STM32CubeMX

Welcome to the first post on getting started with using a Real-Time Operating System (RTOS) and Percepio Tracealyzer. In earlier posts we have talked a lot about how you can use Tracealyzer to find unwanted behavior in your RTOS-based system, but here and in a few later articles we will discuss how to actually do [...]

April 28th, 2016|Categories: Blog|Tags: |

How debug an Electric Race Car

If you have kids and like to build stuff, you might have built a soapbox car at some point. At least I did last summer. For me, an obvious next step was to consider adding an electric motor. I never found the time, but would have loved a project like that. I therefore got quite [...]

April 20th, 2016|Categories: Blog, News|Tags: |

Great success at Embedded World

In the end of February we exhibited at Embedded World, which is the largest Embedded Systems trade show in the world with about 1000 exhibitors and 25,000 visitors. The show was very successful for Percepio! We had a lot of interested visitors and we were approached by several major MCU vendors interested in collaboration. It [...]

March 11th, 2016|Categories: Blog, News|

Tracealyzer for FreeRTOS v3.0.6

An updated version is now available of Tracealyzer for FreeRTOS. This solves a minor issue with task names containing the substring "idle", which previously were mistakenly assumed to be the idle task (which is treated differently).

March 8th, 2016|Categories: Blog, News|

RTOS 101: Performance analysis with Tracealyzer

When developing firmware using a Real-Time Operating System (RTOS), how do you measure the software performance? One important aspect of performance analysis is response time, the time from point A to point B in the code, e.g., from when a task is activated until it is completed. This can be measured in many ways, e.g., [...]

February 19th, 2016|Categories: Blog|Tags: |

Tracealyzer for FreeRTOS v3.0.4

We are proud to announce the availability of an updated Tracealyzer for FreeRTOS, version 3.0.4. Updated versions for other platforms will follow shortly. Changes include: Support for Atmel Studio 7 The Tracealyzer extension for Atmel Studio ("FreeRTOS+Trace" found in Atmel Gallery) now supports trace upload via Atmel Studio 7. For technical reasons we had to [...]

February 17th, 2016|Categories: Blog, News|

Percepio and FreeRTOS creator Richard Barry at Embedded World

Next week is Embedded World in Nürnberg, Germany, the largest embedded industry trade show in the world. This year Percepio is participating in a big way. We will have two stands demonstrating our Tracealyzer products and some very cool presentations together with Mr. Richard Barry, creator and maintainer of FreeRTOS.   Percepio home base will [...]

February 16th, 2016|Categories: Blog, News|

Percepio raises expansion capital

PRESS RELEASE Percepio AB, the Swedish developer of visualization tools for embedded software developers, has secured a new investment round to accelerate expansion, and focus on development and marketing of its Tracealyzer software. The main investors are Stockholms Affärsänglar and Professionell Ägarstyrning AB, the latter is a new investor in Percepio and now joins the [...]

February 11th, 2016|Categories: Blog, News|

Job opening – C# developer / Data Visualization

Percepio develops visualization software, Tracealyzer, which is used by embedded systems developers worldwide in development, validation and troubleshooting of all sorts of advanced software-controlled products, from vacuum cleaners to industrial robots and electric cars. We are now hiring a skilled C# developer.   Percepio is an innovative all-star team that puts great value in your [...]

February 3rd, 2016|Categories: Blog, News|

How much processor time is used by the recorder?

Software-based tracing always means some processing overhead, where the exact amount is f x e, where f is the average event frequency and e is the average execution time for storing an event. This is very dependent on your application and processor. The more RTOS calls, the larger overhead. The faster processor, the less overhead. Let's put in some [...]

February 3rd, 2016|Categories: FAQ|Tags: , , |

RTOS 101: Tasks, Priorities and Analysis

The use of Real-Time Operating System (RTOS) is increasingly common in embedded software designs, as an RTOS makes it easy to divide your code into smaller blocks, tasks, which execute seemingly in parallel and independent of each other. An RTOS provides multi-tasking, in a reliable and maintainable manner, which makes it easier to design applications [...]

January 28th, 2016|Categories: Blog|Tags: |

Improved J-Link trace streaming

Our latest version of Tracealyzer supports continuous streaming trace via SEGGER J-Link debuggers for FreeRTOS and SEGGER embOS. This is based on the J-Link's Real-Time Transfer feature (RTT) that allows for transferring data between host and target at high speeds in a non-intrusive manner. Our RTOS monitoring just needs to write the data into a [...]

October 27th, 2015|Categories: Blog|

Tracealyzer for FreeRTOS v3.0.2

Today we released a minor improvement of Tracealyzer for FreeRTOS. Changes: - Improved User Manual - updated chapter about the trace recorder library. - Bug fix in the streaming recorder, related to tracing of nested ISRs.

September 29th, 2015|Categories: Blog, News|

The Value of Runtime Visualization

ABB Robotics is a leading developer of industrial robots and robot control systems. They have been using Tracealyzer systematically since 2005. Their highly sophisticated control system has a software trace recorder active at all times, also during customer operation.   We let the Tracealyzer users at ABB Robotics answer a survey regarding the value of [...]

September 27th, 2015|Categories: Blog, News|

Embedded Conference Scandinavia

Percepio founder Dr. Johan Kraft will present "Runtime visualization on ARM Cortex-M devices" at Embedded Conference Scandinavia (ECS 2015). The presentation is on November 4 at 11:30, in the "Debug" session. Abstract With increasing software complexity, runtime visualization becomes increasingly important for development productivity and product quality. Visualization allows embedded software developers to quickly gain [...]

September 17th, 2015|Categories: Blog, News|

Tracealyzer v3.0

PRESS RELEASE Percepio AB, the Swedish developer of RTOS visualization tools, today announced the availability of Tracealyzer v3.0, initially supporting FreeRTOS and SEGGER embOS. The new generation Tracealyzer offers continuous trace streaming, allowing for essentially unlimited traces of task scheduling, interrupts, and application logging. Trace streaming is supported via SEGGER J-Link debug probes, which offers [...]

September 8th, 2015|Categories: Blog, News|

Using Tracealyzer on STM32

Tracealyzer gives unprecedented insight into embedded software’s real-time behavior. Tracealyzer targets RTOS-based systems and is available for FreeRTOS, Wittenstein SafeRTOS, Micrium µC/OS-III, Segger embOS, Wind River VxWorks, and also for Linux. The Tracealyzer family includes "FreeRTOS+Trace", Wittenstein's "SafeRTOS+Trace" and Micrium's "µC/Trace". This page explains how to get started with Tracealyzer on STM32 and FreeRTOS. Tracealyzer [...]

August 27th, 2015|Categories: Blog|

FreeRTOS+Trace for PIC32 MCUs

We are proud to announce a new version of FreeRTOS+Trace targeting Microchip PIC32 and Microchip MPLAB® X IDE. FreeRTOS+Trace is the Tracealyzer for FreeRTOS. FreeRTOS+Trace visualizes run-time behavior of your embedded software through 20+ interactive views that complement the debugger perspective with the “big picture”. You may have used some trace tool before, but this [...]

August 18th, 2015|Categories: Blog, News|

FreeRTOS+Trace now with Task Notifications

FreeRTOS+Trace v2.7.7 is now available on the Downloads page. The main improvement is support for tracing and viewing Task Notifications. This is a lightweight mechanism for task communication and synchronization, introduced in FreeRTOS v8.2.0. Read more at FreeRTOS.org. Task Notifications tracing requires FreeRTOS v8.2.2 or newer. Other improvements include: - Updated plugin for Microchip MPLAB [...]

August 12th, 2015|Categories: Blog, News|

New distributor – Italsoft

We are happy to introduce a new member of our expanding reseller network, Italsoft, now representing Percepio in Italy. So if you are interested in the Percepio Tracealyzer tools and live in Italy, please contact our new partner! For distributors in other countries, please check Partners page.

June 2nd, 2015|Categories: Blog, News|

Customer Case: Increased response time?

This Tracealyzer user developed a networked system, containing a TCP/IP stack, a flash file system, and an RTOS running on an ARM Cortex-M4 microcontroller. The system contained several RTOS tasks, including a server-style task that responds to network requests, and a log file spooler task. The response time on network requests had often been an [...]

June 1st, 2015|Categories: Blog|Tags: |

Three new distributors

We are seeing increased interest for Percepio Tracealyzer all over the world and strive to provide local distributors on all markets. We are therefore happy to present the three new distributors in our expanding reseller network: Dioiz covering Korea. Indes covering Benelux. Macro Dynamics covering Australia and New Zealand.   If you are interested in [...]

May 20th, 2015|Categories: Blog, News|

Tracealyzer for Linux Tutorial

Check out our new Tracealyzer for Linux Tutorial, explaining how runtime visualization can improve software development efficiency and software quality, showing how Tracealyzer for Linux can visualize runtime Linux systems, and especially how to get started with Tracealyzer and LTTng.   Tracealyzer for Linux provides unprecedented runtime visualization for developers of multi-threaded Linux applications and [...]

May 14th, 2015|Categories: Blog|

embOS-Trace video with J-Link streaming

Check out our new embOS-Trace video, demonstrating the first Tracealyzer product to offer continuous trace streaming on SEGGER J-Link debug probes. This works on any SEGGER J-Link debug probe and any ARM Cortex-M device. The new Tracealyzer support for J-Link streaming has initially been released for SEGGER embOS. Learn more on the embOS-Trace product page. [...]

May 12th, 2015|Categories: Blog, Videos|

embOS-Trace v2.8.3

We have released embOS-Trace v2.8.3, just a small bug fix related to User Event formatting. The new version is available on the Downloads page.

May 8th, 2015|Categories: Blog, News|

Updated Tracealyzers – v2.7.5 and v2.8.2

Today we released updated versions of all Percepio Tracealyzer tools, version 2.8.2 for embOS-Trace and version 2.7.5 of other Tracealyzer tools. Changes v2.7.4 -> v2.7.5 * Corrected Mono/Linux support. * Corrected "Export Actor Data" - now respects time-formatting. * Simplified signup for evaluation, opens "enter license key" after registration. Note: The recorder library has not [...]

April 30th, 2015|Categories: Blog, News|

Sightsys new distributor in Israel

Percepio has today signed with Sightsys LTD as sole distributor in Israel. Percepio founder and CEO, Dr. Johan Kraft comments: "We offer the Tracealyzer products for several leading real-time operating systems and Sightsys is a very suitable partner with matching focus. We are happy to welcome Sightsys as a Percepio partner and reseller."

April 27th, 2015|Categories: Blog, News|

embOS-Trace v2.8.1 available

An updated version of embOS-Trace is now available in the downloads section. - Latest J-Link drivers, with bug fixes regarding SEGGER RTT (on some older J-Link models, onlu buffer 0 could be used). - Missing defines embOS "rtos.h" added in "trcRecorder.c" as hotfix, until embOS is updated with the missing defines.

April 24th, 2015|Categories: Blog, News|

embOS-Trace v2.8.0 available

We are proud to announce the availablity of embOS-Trace, the Tracealyzer for SEGGER embOS. Download and try it today! There is a demo trace included that allows for trying the visualizations without any setup required. This is the first Tracealyzer to feature trace streaming, allowing for essentially unlimited durations of RTOS-level tracing. This uses SEGGER [...]

April 20th, 2015|Categories: Blog, News|

FreeRTOS+Trace for Renesas V850ES

We now offer a port of FreeRTOS+Trace for Renesas V850, including a demo project for IAR Embedded Workbench. See the "Contributed Ports" section: https://percepio.com/tz/downloads/?dir=L0NvbnRyaWJ1dGVkIFBvcnRz.

April 20th, 2015|Categories: Blog, News|

Customer Case: Mysterious Watchdog Reset

We collect examples of how Tracealyzer has been of useful to our customers and have recreated similar issues to illustrate the benefits of our Tracealyzer tools for embedded software developers. In this case, a customer had an issue with a randomly occurring reset. By placing a breakpoint in the reset exception handler, they figured out [...]

April 20th, 2015|Categories: Blog|Tags: |

FreeRTOS+Trace v2.7.4

We are happy to announce an updated version of FreeRTOS+Trace. This is a minor update, so updating is not strictly required, although recommended. This will most likely be the last v2.7 release, we now focus on finalizing version 2.8. Changes v2.7.0 -> v2.7.4 - Improved integration with Atmel Studio, making it very convenient to use [...]

April 16th, 2015|Categories: Blog, News|Tags: |

Percepio in “Dagens Industri”

Percepio recently appeared in the Swedish business newspaper "Dagens Industri". Below is a scan for those who understand Swedish. The text describes (briefly) the challenges of embedded software development, how developers can benefit from run-time visualization tools, how the company got started, etc. (Click to enlarge.)

April 7th, 2015|Categories: Blog|

Percepio AB Joins ARM Connected Community

PRESS RELEASE Västerås, Sweden 2 April 2015. Percepio AB today announced it is a new member in the ARM® Connected Community, the industry’s largest ecosystem for ARM-based technology and services. As part of the ARM Connected Community, Percepio will gain access to a full range of resources to help it market and deploy innovative solutions [...]

April 1st, 2015|Categories: Blog, News|

Streaming trace on SEGGER J-Link

A major limitation with our previous Tracealyzer tools has been the limited trace length and/or large RAM requirements. The recorder could only store as much trace as its RAM buffer allowed. This could at most give a few seconds of trace on most microcontrollers. Can be very valuable, but also rather restricted in many cases. [...]

March 11th, 2015|Categories: Blog|

Presenting at ECS-Syd

Today, march 10th, Percepio founder and CEO Dr. Johan Kraft is giving a presentation at Embedded Conference Scandinavia Syd (in Malmö. Sweden) with the title Visualizing the Runtime World of Embedded Software - Benefits and Examples. Abstract Source code alone does not tell the full story, as software behavior also depends on inputs, code timing [...]

March 10th, 2015|Categories: Blog|

Customer Case: Unexpected Timing

We collect examples of how Tracealyzer has been of useful to our customers and have recreated similar issues to illustrate the benefits of our Tracealyzer tools for embedded software developers. In this case, a customer had an issue with a periodic task not running as expected, here called SamplerTask. This was the highest priority task [...]

March 4th, 2015|Categories: Blog|Tags: |

Visit us at Embedded World

If you are at the Embedded World show, make plans to visit the Percepio team in Atmel's booth (4A/230) for a demo of Percepio's latest visualization tools, integrated with Atmel Studio. And don't miss "Visualising the Runtime World of Embedded Software - Benefits and Examples", given by Percepio founder Dr. Johan Kraft. The presentation will [...]

February 24th, 2015|Categories: Blog|

Introducing embOS-Trace and J-Link streaming

We are delighted to announce a new Tracealyzer targeting SEGGER embOS. The new Percepio embOS-Trace has been developed in collaboration with SEGGER to provide an unprecedented insight into the run-time world of SEGGER embOS applications. Percepio embOS-Trace is designed for use with SEGGER J-Link debuggers and allow for continuous trace streaming on any J-Link debugger, [...]

February 23rd, 2015|Categories: Blog, News|

Support for all Atmel debuggers

We are happy to announce an update of FreeRTOS+Trace in Atmel Gallery. FreeRTOS+Trace now integrates much tighter with Atmel Studio and allowing for downloading the trace buffer using any debugger supported by Atmel Studio, both for ARM and AVR32. To use this feature, install the Atmel Gallery version and launch FreeRTOS+Trace from the "Tools" menu [...]

February 10th, 2015|Categories: Blog, News|

How does the floating licenses work?

Floating network licenses offer a flexible licensing solution for most development teams. With a floating license, you can install the tool on any number of computers, but the number of concurrent users is limited by the license server. Our floating licenses have a linger time, i.e., minimum lockout time of 2 hours, intended for very small [...]

January 30th, 2015|Categories: FAQ|Tags: , , , , , , |

Tutorial with FreeRTOS founder Richard Barry

At Embedded Conference Scandinavia in early november 2014, Dr. Johan Kraft from Percepio and FreeRTOS founder Richard Barry gave a tutorial on FreeRTOS and FreeRTOS+Trace, using Atmel Studio and Atmel boards for the labs. The tutorial, "Getting Started with FreeRTOS and FreeRTOS+Trace", was a two hour hands-on workshop and we only had room for 20 [...]

January 23rd, 2015|Categories: Blog, Videos|

Got error “uiTraceGetPriorityProperty: Invalid value for id”

If asserts are enabled the recorder configuration (trcConfig.h), this error is generated in uiTraceGetPriorityProperty when a task has an "object handle" value larger than expected. Our FreeRTOS recorder assignes each task an 8-bit "object handle" (the "id" parameter in uiTraceGetPriorityProperty), which should be in the range [1..NTask]. The NTask constant is defined in trcConfig.h and [...]

December 19th, 2014|Categories: FAQ|Tags: , , |

Tracing virtual hardware using Emul8 and Tracealyzer

At Embedded Conference Scandinavia, in November 2014, Percepio founder Dr. Johan Kraft presented a pilot project on integrating our tracing technology with Emul8, a system simulator providing virtual hardware platforms for embedded systems development. See the presentation (.pdf) Abstract Using a system simulator as a virtual hardware platform has several benefits for embedded software developers. [...]

December 19th, 2014|Categories: Blog|

Tips’n’tricks in new v2.7

Today we released v2.7 of our Tracealyzer tools. Apart from the key improvements, there are several smaller fixes that you can benefit from. Some are not that obvious, so here are some pointers: Easier selection in legend of horizontal views: The horizontal graphs offers a legend showing the color/name mapping. This also allows you to [...]

December 8th, 2014|Categories: Blog|

Tracealyzer 2.7

We are proud to announce the availability of Tracealyzer version 2.7, including FreeRTOS+Trace, Tracealyzer for Linux, Tracealyzer for VxWorks, and Tracealyzer for On Time RTOS-32. This is the largest update in two years! Key improvements include: Linux support: The Percepio Tracealyzer tools now also run on Linux, through Mono, an open source .NET framework supported [...]

December 8th, 2014|Categories: Blog, News|

Academic Users Everywhere

We offer free academic licenses for all our products, which mainly has been requested for our FreeRTOS version of Tracealyzer, FreeRTOS+Trace. On our last count, we have FreeRTOS+Trace users with academic licenses at 26 universities. It is great to see that so many students and researchers are seeing the value of software tracing! Germany seems [...]

December 4th, 2014|Categories: Blog|

Integration with MPLAB X IDE

We are pleased to announce an integration with Microchip MPLAB X IDE, which makes it much easier to use FreeRTOS+Trace with Microchip debuggers and boards. From v2.7 we also provide MPLAB demonstration projects for both PIC32MX and PIC32MZ. The integration is an MPLAB plugin that extract the trace data from the target system (from the [...]

November 19th, 2014|Categories: Blog, News|

How to define critical sections for the trace recorder?

Our Tracealyzer versions for microcontroller RTOS uses Percepio's own recorder library, which uses separate definitions for critical sections within the recorder. This since the standard critical sections offered by some RTOS kernels, like portENTER_CRITICAL/portEXIT_CRITICAL in FreeRTOS, might not safe to use from interrupt (kernel) context. Some recorder functions are called both from task-level and interrupt-level [...]

October 27th, 2014|Categories: FAQ|Tags: , , |

Presenting at ECS 2014

This year, we give two presentations at Embedded Conference Scandinavia. Day 1 (Nov. 4) at 09.30: Get started with FreeRTOS and FreeRTOS+Trace (with Richard Barry) Day 2 (Nov. 5) at 09.30 (yes, same time): Software tracing on virtual hardware using Emul8 and Tracealyzer   To participate in the 2-hour FreeRTOS hands-on workshop, you need to sign up. There are [...]

October 15th, 2014|Categories: Blog, News|

How to upload traces from RAM in Keil µVision?

The upcoming version 2.7 of FreeRTOS+Trace contains a demo project for Keil µVision and the STM32F400. Related to this, we like to highlight a smart solution for how to save the trace data in Keil µVision, provided by our partner Antycip. Many thanks, Julien! If you don't have a J-Link or Atmel SAM-ICE debugger (for [...]

August 22nd, 2014|Categories: FAQ|Tags: , , |

Article in Design & Elektronik

Our recent article about Linux tracing with LTTng and Tracealyzer was recently published in a German translation by the leading publication Design & Elektronik. You find the article here.

August 15th, 2014|Categories: Blog|

Press Release: Carnica Technology new Percepio Reseller

PRESS RELEASE June 19th, 2014. Västerås, Sweden and Hermagor, Austria. CARNICA TECHNOLOGY® (http://www.carnica-technology.com), the Austrian specialist for embedded development solutions today announced the extension of its solutions portfolio through the distribution alliance with the Swedish company PERCEPIO (https://www.percepio.com), an internationally leading developer of visual trace diagnostics tools for embedded software development. Carnica Technology offers the [...]

June 19th, 2014|Categories: Blog, News|

Article in Elektroniktidningen

We recently contributed an article to the Swedish electronics magazine Elektroniktidningen, on the subject of software-based trace in Linux using LTTng and Tracealyzer. This is an extended version of the earlier article in Electronics Weekly, and in Swedish this time. The article is available here (PDF, 2.75 MB), with permission from Elektroniktidingen. I hope you [...]

May 7th, 2014|Categories: Blog|

Article in Electronics Weekly

We contributed an article on Linux tracing in the March edition of Electronics Weekly. The article is available online. We hope you like it. If you do, feel free to share the link!

May 5th, 2014|Categories: Blog|Tags: |

Phaedrus Systems new UK Reseller

Västerås, Sweden and Tamworth, England, 28th April 2014 Percepio is happy to welcome Phaedrus Systems as the official reseller in the UK for the company’s Tracealyzer software tools. Tracealyzer is a family of highly visual diagnostics tools for embedded and Linux-based software that lets you look inside the runtime system in a new way. There [...]

April 28th, 2014|Categories: Blog, News|

New FreeRTOS+Trace Edition

FreeRTOS+Trace gives an unprecedented level of insight into the run-time world of embedded software based on FreeRTOS and OpenRTOS. This allows you to solve complex software problems in a fraction of the time otherwise needed, develop more robust designs to prevent future problems and find new ways to improve your software’s performance. We are now [...]

April 4th, 2014|Categories: Blog, News|

Press Release: Percepio partners with Antycip

PRESS RELEASE VÄSTERÅS, Sweden and PARIS, France, March 27th, 2014. Tracealyzer developer Percepio partners with Antycip Swedish trace tool developer Percepio is partnering with Antycip for distribution in France regarding Tracealyzer for Linux and FreeRTOS+Trace, the Tracealyzer for FreeRTOS. Percepio's Tracealyzer tools provide a new level of insight into embedded software’s run-time behavior during development, [...]

March 27th, 2014|Categories: Blog, News|

How to set ISR_TAILCHAINING_THRESHOLD?

To trace the execution of exception/interrupt handlers (ISRs), you need to call vTraceStoreISRBegin and vTraceStoreISREnd in the beginning and in the end of the handler function. The vTraceStoreISREnd routine normally assumes a return to the previously executing task. But sometimes another ISR is pending and executes in direct sequence, making this assumption incorrect. For instance, ARM Cortex-M devices [...]

March 21st, 2014|Categories: FAQ|Tags: |

FreeRTOS+Trace v2.6 released!

We are really excited to present our latest version of FreeRTOS+Trace, the Tracealyzer for FreeRTOS. This release of version 2.6 is the largest update in over a year (since v2.3) and includes support for FreeRTOS 8 and several other improvements. Apart from the new features, we are also introducing a new mid-level premium version, Standard [...]

March 7th, 2014|Categories: Blog, News|

Why do I get “error: ‘uxPendedTicks’ undeclared”?

If you get this error when compiling the recorder, you are probably using an older version of FreeRTOS (v7.5.x or earlier) together with a newer version of the recorder library. The FreeRTOS variable 'uxPendedTicks' was before v7.5.2 named 'uxMissedTicks', so you need to replace uxPendedTicks with uxMissedTicks in the definition of traceTASK_INCREMENT_TICK in trcKernelPort.h Update: [...]

March 6th, 2014|Categories: FAQ|Tags: |

Why do I get “Failed to load trace: Invalid control marker value (debug marker 1)”

This means that something that appears to be trace data was found in the RAM dump, but with some difference in the expected data format. This typically occurs if you are using an older version of the application (e.g, FreeRTOS+Trace or µC/Trace) with a newer version of the recorder. We have received several questions about [...]

March 4th, 2014|Categories: FAQ|Tags: , , |

Atmel Studio 6.2 comes with Percepio Trace

Embedded World exhibition, Nuremberg Feb 26, 2014 Atmel Corporation, a leading developer of micro-controllers, today announced the integration of Percepio Trace in Atmel Studio 6.2, a free development environment for Atmel micro-controllers now available in a Beta release. Percepio Trace allow developers to better understand, analyze and optimize their embedded software without having to add [...]

February 26th, 2014|Categories: Blog, News|

Press Release: New Investors

Press Release Dec. 10, 2013, Västerås, Sweden. Major Players invest in Percepio Percepio AB develops the Tracealyzer software, an analysis tool for developers of embedded and Linux-based software systems. Tracealyzer visualizes the internal behavior of the target system through more than 20 graphical views, interconnected in intuitive ways. This gives developers a new level of [...]

December 10th, 2013|Categories: News|

Introducing Tracealyzer for VxWorks and Linux

Nov. 13, 2013. Västerås, Sweden. Percepio today announces the availability of Tracealyzer for VxWorks and Tracealyzer for Linux. Percepio's Tracealyzer tools provide an unprecedented level of insight into the run-time world of embedded software systems during development, verification and maintenance. This allows you to solve complex software problems in a fraction of the time otherwise [...]

November 13th, 2013|Categories: Blog, News|

How does Tracealyzer for VxWorks relate to Wind River Workbench?

Tracealyzer for VxWorks uses the same data source as System Viewer in Wind River Workbench, but provides a more powerful visualization featuring over 20 different views that all are interconnected in clever ways. Tracealyzer is more intuitive to use and gives a much better understanding of your system. Some unique features of Tracealyzer are: Trace [...]

November 11th, 2013|Categories: FAQ|Tags: |

FreeRTOS+Trace v2.5.1

An update of FreeRTOS+Trace is now available, version 2.5.1, download it here. Added/improved recorder ports for Texas Instruments MSP430, NXP LPC21xx, Atmel AVR32 and Xilinx Microblaze. Fixed an issue related to tracing of FreeRTOS low-power mode/tickless idle. This works as intended now. The End User License Agreement was shown every time the application starts, if [...]

November 2nd, 2013|Categories: Blog, News|

What hardware platforms are supported?

The recorder library can be used on any 32-bit microcontroller system that meets the following requirements: Contains a high resolution time source (a timer/counter or similar). Only read access is required, so the OS tick timer can be used. 16 KB of Flash available (can be scaled down to 6 KB in minimum configuration) At [...]

October 21st, 2013|Categories: FAQ|Tags: , , |

What debuggers are supported?

If you have a J-Link debug probe, the viewer application can access this directly to download the trace. In other case, most debugger are able to store RAM contents to a file that can be read by FreeRTOS+Trace, SafeRTOS+Trace and µC/Trace. Binary (".bin"), Intel Hex (".hex") and ".mch" formats are supported. These can be generated [...]

October 20th, 2013|Categories: FAQ|Tags: , , |

How much FLASH does the trace recorder need?

The below table shows an example, using version 2.5.1 of the recorder library, compiled for ARM Cortex M4 (Atmel SAM4S16C) using ARM GCC v4.7.3. Recorder configuration Compiler optimization Flash usage Basic features -Os (minimum size) 5,788 byte Basic features -O3 (maximum speed) 6,840 byte All features -Os (minimum size) 13,368 byte All features -O3 (maximum [...]

October 18th, 2013|Categories: FAQ|Tags: , , |

How do I enable tracing of interrupt handlers?

Interrupt handlers (ISRs) are not recorded by default. To record ISRs, you need to add two calls in the interrupt handlers you wish to record, vTraceStoreISRBegin in the very beginning and vTraceStoreISREnd in the very end. See trcUser.h for further information. The parameter of vTraceStoreISRBegin is a unique numeric ISR ID that you select yourself, [...]

October 17th, 2013|Categories: FAQ|Tags: , , |

What does the label “ISR using …” mean?

If you have interrupt handlers using interrupt-level kernel functions, but are not calling vTraceStoreISRBegin and vTraceStoreISREnd, the recorder assumes that the kernel call was made from an interrupt handler, but does not know the identity of the interrupt handler. In this case, the name is set to "ISR using ", where is the queue or [...]

October 15th, 2013|Categories: FAQ|Tags: , , |

How do I set custom names for queues (and other kernel objects), instead of the default names (“Queue #1” etc.)

Use vTraceSetQueueName, vTraceSetSemaphoreName or vTraceSetMutexName, as in the below example: actuatorQ = xQueueCreate(3, sizeof(QueueMessage) ); if (actuatorQ != NULL) { vTraceSetQueueName(actuatorQ, "ActuatorQueue"); // Set the name ... } else { ... // Error handling }

October 14th, 2013|Categories: FAQ|Tags: , , |

The trace does not load correctly, what is wrong?

Check the following things: 0) Are you using an updated OS kernel with the instrumentation needed by the recorder? 1) Has the trace initialization function been called? This must be called early, before calling any kernel or recorder function. 2) Has the trace recorder been started/triggered? 3) Have you integrated the recorder properly in your [...]

October 13th, 2013|Categories: FAQ|Tags: , , |

Some trace files can’t be opened, what is wrong? (ARM Cortex-R4)

If using memory protection (MPU) on ARM Cortex-R4 devices, the debugger can't read kernel-space data (including the trace data) when in user-space code. If this is the case, your trace file (RAM dump) will only contain the byte pattern 0xBAD0BAD0 instead of the trace data. If you experience this problem, make sure to break the [...]

October 12th, 2013|Categories: FAQ|Tags: , , |