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Imagine you have full insights of what your embedded system is doing without impacting its real-time performance in any way, creating a record of each step along the way. You could determine the performance of your application and coverage data for certifying your safety critical application. You could bring your embedded designs to market faster and more reliably than ever, while creating a safer and more stable product. This is what trace-based debugging gives you.
Lauterbach’s selection of PowerTrace extension collect information while the system under examination is running normally, without interruption. You can instantly start examining the data, as it is translated and displayed, using the same TRACE32 PowerView GUI you already know from debugging. With this comes all of the control and scriptable actions you are used to from Lauterbach TRACE32 tools.
Traditional debugging is like taking snapshots of a car race as the cars speed past you: you miss most of what happens during the race. Trace based debugging is like having access to the car’s on-board telemetry, track conditions, and driver actions. Each action and its time is recorded.
Program flow data provided by our PowerTrace extensions shows you exactly which instructions have been executed and how long it took to execute them. By using real-time tracing, you can:
Many embedded processors are capable of providing this level of detail about the software being executed, without interfering with the application being tested. All you need are the right tools to collect any available information and to analyze it: Our PowerTrace.
Tap into over 40 years of trusted experience in capturing and analyzing trace data from Lauterbach’s long history. Continuous improvements, alongside close industry contacts, have allowed Lauterbach to create the best available tools for the embedded industry. Whatever your situation, TRACE32® tools have been optimized to meet your need.
Record those ‘one in a million’ events and discover why they happen. Save ultra long-term test data (hours, days or even weeks of run-time) by streaming the trace data to your local PC, providing almost unlimited sample lengths.
Simultaneously inspect any or all of: the hypervisor; all guest operating systems, including their device drivers, interrupt service routines, and middleware; and the application software running on any or all cores.
Record trace from several cores at the same time via the same trace port using a mix of heterogenous or homogenous processor architectures using a single trace tool.
Never miss a moment with buffer sizes of up to 8 GB and trace port bandwidths of up to 100 GBit/s. PowerTrace provides you with the fastest trace tools, supporting the most trace protocols available today.
Trace information can be stored in special on-chip memory buffers or spooled off-chip to be collected by dedicated trace tools. On-Chip memory buffers are located inside the chip and are made from fast, but expensive, on-chip memory, limiting their size to a few kilobytes. Off-chip trace interfaces allow for external tools with very large buffers (typically many Gigabytes) to collect the trace information. Of course, TRACE32 supports both off-chip and on-chip trace.
The PowerTrace extensions are part of our modular TRACE32 PowerDebug System. PowerTraces connect to the side of your PowerDebug X50 module, which provides the connection to your host PC either via USB 3 or Gigabit Ethernet. The older PowerDebug PRO and PowerDebug II will also benefit from a PowerTrace extension.
Similar to the debug probe plugged to the PowerDebug X50, you need a platform-specific connecting device between your PowerTrace and your target’s trace port – because trace ports come in all shapes and sizes. That connecting device is either a trace probe (aka. trace preprocessor) or – with PowerTrace Serial – it could be just a flex-cable or passive trace adapter.
In case your target board has a combined connector for debugging and tracing, you can connect the Debug Probe to your Lauterbach trace hardware, passing the debug signals through the trace connection.
Your chip’s transfer technology will determine the best match from our various PowerTrace module classes, parallel or serial trace. Both have been designed for your highest performance requirements and are capable of managing current and future generations of throughputs. Lauterbach provides industry leading, state of the art, adaptable tools that support nearly all transfer technologies and data formats emitted by embedded devices.
For low-speed CPUs or Arm Cortex-M cores we provide two compact and cost-effective debug and trace alternatives, our CombiProbe and µTrace modules.
Trace data emitted by embedded devices follow certain encoding formats, or trace protocols. TRACE32 understands a wide variety of standard and proprietary trace protocols for both system-level and program-flow traces. Below is an introduction to the most common protocols supported by TRACE32.
The Embedded Trace Macrocell (ETM) provides real-time traces of the program-flow and data-accesses. It is primarily used in Arm processors, but also with Hexagon, Ceva-X and Teak cores.
There are currently 4 versions: ETMv1, ETMv3, PFT and ETMv4.
The MIPI Trace Wrapper Protocol (TWP) was designed to combine the trace streams of multiple CPU cores to send them off-chip in a single trace stream. While it was originally designed for Arm's CoreSight debug and trace infrastructure it allows today the simulations tracing of Arm Cortex (ETM), Xtensa (TRAX), ARC (RTT) and many other architectures. Also, further trace sources like ITM/STM are supported.
Nexus trace (or IEEE-ISTO 5001) provides real-time traces of program-flow, data-accesses, and bus-activity. It is used with PowerPC, ARC (RTT), Xtensa (TRAX), RH850, and RISC-V.
For many years, Lauterbach has been a major contributor in the defining and shaping of the Nexus standard.
The System Trace Protocol (STP) is designed to analyze the dynamic behaviour of a real-time application on a higher level. System trace messages are either generated by an instrumentation in the software running on a processor or by components monitoring activities outside the processor. STP can support multiple trace streams and emit them directly via an off-chip port or STP can be wrapped in another protocol (TWP). Arm’s System Trace Macrocell (STM) implements such a system trace.