Propeller Education Kit Labs - Fundamentals (Book)

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Includes the latest version of the listed in this section plus introductory material and updated source code. 

 

Propeller <-> PC Terminal Communication - Added (4/6/09)

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The Parallax Serial Terminal is a useful tool for testing code and displaying messages that include status indicators, variable values, I/O pin states and more.  It is also useful for sending messages that choose between different options or set variable values.  This article introduces “Hello Parallax Serial Terminal.spin”, an object to keep handy for adding Parallax Serial Terminal functionality to your applications.

 

Debug LITE for the Parallax Serial Terminal -  New (5/3/09)

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The PST Debug LITEobject is a simple and convenient tool for debugging Spin code with the Parallax Serial Terminal.  Figure 1 shows an example debug display, paused at a breakpoint during a debugging session.  The display features I/O pin directions and states next to a list of variables and their values.  There’s also a message at the bottom prompting to press Enter to continue from the breakpoint. 

  

Measure Resistance and Capacitance - Added (3/12/09)

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Propeller microcontroller applications that need to measure resistors or capacitors can use the MeasureTime object and a resistor capacitor (RC) circuit to determine their values.  Since there’s a myriad of sensors whose resistances or capacitances respond to physical properties such as light, rotation, humidity and pressure (to name a few), the simple, inexpensive circuits and easy-to-use object featured in this PE Kit Tools article opens up a whole world of measurement possibilities.

 

Transmit Square Wave Frequencies - Added (4/14/09)

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Each Propeller microcontroller cog can configure either or both of its counter modules for transmitting square waves in the background.  This approach is especially useful since it allows the Spin code to move on to other tasks while the counter module transmits the square wave.  The SquareWave object has methods that reduce all the counter module configuration legwork to a few simple method calls.  These methods can configure a given cog’s counter module(s) to transmit either single-ended or differential square waves at integer frequencies up to 128 MHz. 

 

EEPROM Datalogging

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HyperTerminal application for testing the Propeller Eeprom object’s VarBackup, VarRestore, FromRam, and ToRam methods.  It allows you define values stored by selected array elements and then copy the array from main RAM to EEPROM and visa versa.

 

Servo Control

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This application of the Counter Modules and Circuit Applications lab can be used to precisely control up to 14 servos in a separate cog.  All objects written in spin.

 

Coming Soon

  Measure:

     - Pulses

     - Duty Cycle

     - A/D Conversion

  Generate:

     - Square Waves

     - D/A Conversion