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 Firmware Analytics

Execution Pie Chart

This Pie chart visualizes the Total time of executing a main outer loop, and the % of time that belongs to the various functions or Slices inside of the loop.

• See Slice cycles vs TOTAL cycles as a multi-color Pie Chart
• Pie Charts can be animated as the TRACE listing is being analyzed during Run or Single Step
• Same data can be shown in a Bar graph form

ClearView Firmware Analytics works by revealing your program’s execution and operating statistics using a number of visualization graphs and cycle time measurements. All visualizations can be animated as the program is being analyzed during Run, Single Step, or Multi-Step.

• Measures: Duration (cycles), Elapsed Time (sec), Bandwidth (Hz), Repetition Rate (Hz), % of Totals (%)
• Visualize instruction execution using digital logic Waveforms, Pie Charts, Bar Graphs, Signal Waveforms

• Specialized instruction execution Visualizers for different measurement points of view
• Conveniently measure the elapsed time and bandwidth of your program… perfect for real-time applications

• Firmware Analytics (and Virtual Hardware Models) perfect for developing combination software / hardware algorithms

Function Analyzer Visualization

The Function Analyzer is one of the visualization tools in the ClearView Analytics package. It works with the Simulator’s Timer Manager to analyze and represent the instruction execution statistics as a set of logic waveforms similar to a Digital Logic Analyzer display. Like a Logic Analyzer, the Function Analyzer measures instruction execution based on automatic and user-defined Timer trigger points.

Using the Function Analyzer waveforms, the instruction execution sequence and the elapsed time of different functions is easy to follow for both development and debugging, providing greater efficiencies in real-time embedded firmware development.

With the Function Analyzer:

• Waveform visualizations and statistics tables support automatic and user-defined Timer trigger points
• Program execution is easy to follow with CALLs and RETURNs interactions
• Very easy to exactly measure how long a function takes to execute in clock cycles
• More…

Embedded Firmware Developers, when writing real-time firmware, did you ever:

• Need to know exactly how many clock cycles your software function takes to execute?
• Need to know the bandwidth of a function, but had no convenient way to measure it?

• Wished you could conveniently generate the elapsed time and bandwidth measurements of all of the functions in your program?

There are 3 executing functions being analyzed above: “start” (blue trace), “Function1” (gold trace), “Function2” (red trace). A high level on the waveform means a function is executing, low level means it is not executing. The waveforms are stacked in sequential order.

Loop Bar Graph Visualization

The Loop Bar Graph represents the number cycles a software loop takes when repeating the loop. It uses 100’s of repeating loops to analyze the program.

• The height of the bar represents the number of cycles the loop took to complete
• The X-axis represent the number times the loop repeated
• Use the Loop Bar Graph to tweak software loops for the highest bandwidth
• Create more efficient software loops

Software Jitter Waveform Visualization

This visualization is used to show how much a repeating loop cycle count varies from one pass to another.

The more jagged the waveform looks, the more the cycle count for the loop varies, and the more that the bandwidth of the loop is being affected.

• The waveform represents the ending loop cycle count for each pass of the loop
• Isolate problem loops that affect the overall bandwidth of a function
• Verify interaction of asynchronous interrupts

Function Bar Chart

The Function Bar Chart visualizes the Total time of executing a main outer loop, and the % of time that belongs to the various functions inside of the loop. Uses the same data as the Pie Chart.

• See function cycles vs Total cycles as a multi-color Bar Chart
• Bar Charts can be animated as the TRACE listing is being analyzed during Run or Single Step
• Same data from the Pie Chart expressed as side by side bar graphs