Ashling: solving critical bugs with Ultra-XD trace probe

Imagine a scenario where you have issues debugging your hardware immediately after a reset or power-up. For example, a complex bug occurs immediately after the target hardware is powered-up, and only happens when executing code in real-time from reset. Using a strategy like setting a breakpoint immediately after reset and then stepping through the code, will not help solve the problem because in this case the breakpoint causes the bug to disappear.  Even halting immediately after reset and activating real-time trace will not solve it, because halting the code execution to allow trace activation causes the malfunction to disappear. This bug is difficult to resolve so the engineer needs to use the full power of a debugger to fix it. 

The Ashling Ultra-XD trace probe for Synopsys DesignWare ARC HS and EM Processors allows you to solves debug issue efficiently, by ensuring real time trace is active from the moment the processor is reset or powered on. By having the trace feature activated and collecting trace code and data from power-up or following a reset, engineers can debug complex bugs which occur during this critical phase, in the same way as during all other phases of code execution. In fact, having the ability to record real-time trace from power-up, is essential in many embedded applications, not only for solving bugs but also in safety-critical and performance-critical applications where the developer requires full visibility of all code executed, including the code executing immediately after a reset. This visibility is now available if using Ashling’s Ultra-XD trace probe together with Synopsys DesignWare ARC RTT trace technology.

There are many other embedded debug scenarios where it is more effective (and sometimes the only way) to debug using real time trace, instead of relying solely on breakpoints and stepping. 

The Ultra-XD supports real-time tracing for all EM and HS DesignWare processors and offers many useful features including: single or multi-core capable real-time Nexus-based tracing; parallel trace capture from program counter, memory R/W and register R/W; tracing execution code, data, exceptions, interrupts etc.; trace filters for tracing only the areas of code and/or data of interest; triggering on complex, conditional conditions.

Key advantages of the Ultra-XD trace probe include large capacity 4GB trace buffer for tracing large volumes of real-time data; non-intrusive trace capture for detecting problems during full-speed real-time execution including interrupt handlers, exceptions etc.; seamless integration of Synopsys MetaWare debugger and Ashling Ultra-XD trace probe provides a high- performance debug environment.


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