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Written by Nicholas McClanahan
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Sunday, 22 August 2010 14:02 |
 Looking for a free Logic Analyzer?
Logic Analyzers are great for understanding & debugging digital signals - like when analyzing a protocol or timing. To use them, you define a trigger event (e.g., when probe 1 is high and probe 2 goes low) and the analyzer will capture the subsequent signals and display them for you.
User Jazzed on the Parallax Forums has put up the Propalyzer, a free Propeller-based Logic Analyzer with some awesome features. First, here's how he describes it;
Purpose:
To provide a serial interface logic analyzer GUI for a Propeller running capture code.
Propalyzer is a Logic Analyzer, not an Oscilloscope. This means it will not dynamically display data available on the Propeller pins. Use other programs for Oscilloscope function.
Propalyzer is designed with HP analyzers in mind. Specifically, the timing diagram is displayed in the main window. Users have control over triggers with a bit mask and an arm state. Users can define groups for making data more meaningful.
Features:
- Serial communications with Propeller
- Compile and Download Propeller with Propellent program
- Flexible serial port settings
- Base clock period (12.5ns default) to 2 second sample rate
- Configurable Propeller clock frequency for display.
- Easy to use Mask, Arm, Trigger, Display settings
- Two waveform display variants
- A state list window with filtering
- Pin Group definitions
- Display context controls
- Key stroke display controls
- 12ns sampling rate
Here's a screenshot from the Propalyzer windows application:
Be sure to check Propalyzer out - Grab it here!
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