Parallax Lab PE Platform Setup Download Page 1

 
 

 

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Copyright © Parallax Inc.  

  PE Platform Setup v1.0  

  11/2/2006   

  Page 1 of 12 

PE Platform Setup 

P

ROPELLER 

E

DUCATION 

K

IT 

L

AB 

S

ERIES

 

Introduction 

The Propeller Education (PE) Kit Platform and Propeller Plug USB to serial converter/programming 
tool are shown in Figure 1.  The PE Platform is an array of breadboards with a Propeller

TM

 

microcontroller in the center along with support circuits that make it a convenient and reusable 
project platform.  The support circuits include: 
 

 

5.0 V and 3.3 V voltage regulators 

 

EEPROM for non-volatile program storage 

 

5 MHz external crystal oscillator for precise clock signal 

 

Reset button for manual program restarts 

 

LED power indicator 

 

9 V battery-to-breadboard connector 

 

4-pin Propeller Plug header for program downloads and bidirectional communication with the 
PC. 

 
In this lab, you will assemble the PE Platform and run a test program to verify that the platform is 
correctly wired and fully functional.  If there is a wiring error, you will also perform the trouble-
shooting steps necessary to find and correct the error.    
 

Figure 

1: PE Kit Platform 

 

Summary of Contents for Lab PE Platform

Page 1: ...nter along with support circuits that make it a convenient and reusable project platform The support circuits include 5 0 V and 3 3 V voltage regulators EEPROM for non volatile program storage 5 MHz external crystal oscillator for precise clock signal Reset button for manual program restarts LED power indicator 9 V battery to breadboard connector 4 pin Propeller Plug header for program downloads a...

Page 2: ...or use with future labs by following these steps Taking an inventory of equipment and parts Installing the Propeller Tool v1 0 or newer software Assembling the PE Platform Testing power and programming connections Testing the crystal oscillator and the programming connections to EEPROM Testing I O pins as both inputs and outputs Troubleshooting if necessary Since the PE Platform will be the microc...

Page 3: ...6 Bags of 10 Jumper Wires P8X32A D40 1 Propeller Chip P8X32A 40 pin DIP 120 00003 1 Propeller DIP pin map sticker 3 Take an inventory of the components in the Propeller DIP Plus Kit If anything is missing replacement parts can be obtained from www parallax com using the part numbers shown Software and Driver Installation The Propeller Tool software is available for download from the Parallax web s...

Page 4: ...ct circuits without having to worry about potentially removing a part or wire that s integral to the PE Platform L Recommended reading Propeller Manual v1 0 pages 13 17 3 Do not plug in the battery Propeller Plug or Propeller chip until instructed to do so 3 Connect the interlocking breadboards together as shown in Figure 3 making sure the numbers and letters are oriented the same way as in the fi...

Page 5: ...tter for the column and a number for the row For example the 9 V battery s positive terminal wire plugs into the center breadboard s L 1 column L row 1 and its negative terminal plugs into L 2 The 2 26 power rails rows line up with the numbers on the prototyping breadboards Red and black lines indicate the column designation in the power rails For example the coordinates of the LED s anode is RED ...

Page 6: ...d to the PE Platform s negative power rail This power rail is connected directly to the battery supply s negative terminal 3 Verify that the Power LED s anode terminal is connected to RED 10 Power Supply 3 Connect the battery to the battery holder as shown in Figure 3 The power LED should glow brightly If it does not unplug it immediately and go to Troubleshooting entry 2 on page 11 3 If you have ...

Page 7: ... chip By modifying both the test circuit and test program you will be able to verify all the PE Platform s subsystems Test the Programming Connection The first test uses the Propeller Tool software s Identify Hardware feature The battery should be connected and the Propeller Plug should be connected to the 4 pin header and your PC via the USB cable 3 Open the Propeller Tool then from the Run menu ...

Page 8: ... battery 3 Disconnect the LED wire from L 14 in Figure 5 and plug it into RED 13 on the power rail between the center and left prototyping breadboards The LED should light If it doesn t double check your wiring and especially check if the LED is plugged in backwards 3 Disconnect the wire from RED 13 and plug it into RED 12 on the leftmost power rail The LED should glow again 3 Disconnect the LED w...

Page 9: ... 10 Hz if the pushbutton connected to P18 is not pressed or at 4 Hz if it is pressed The fact that the LED blinks confirms the oscillator is working properly since the program causes the Propeller chip to use it for a clock signal Next the lead that connects P3 to the LED circuit can be connected to P0 then P1 etc through P15 and it should blink at 10 Hz at each probe point or 2 Hz if the button i...

Page 10: ...atively rewired to different I O pins on the right PushbuttonLedTest spin has to be modified and downloaded to the propeller to test each wiring change Once the left side has been tested as outputs and the right as inputs the circuits can be swapped so that the left side can be tested as inputs and the right side as outputs If any of these tests indicate that an I O pin is faulty refer to Troubles...

Page 11: ...rd backwards The battery s terminal should connect to L 1 and the terminal should connect to L 2 c There could be a wiring mistake causing a short circuit from one of the supply voltages to ground If you don t have a multimeter start visually checking your wiring again With a multimeter you can check the resistance between the battery s negative terminal and the 3 V power rail Repeat for 5 V regul...

Page 12: ...sure it is not inserted upside down Also verify that all the pins on the left side of the chip are tied to GND 9 If you hand entered the program download it from the Propeller Education Kit page instead Open it with the Propeller Tool software and use F11 to download it to EEPROM This will eliminate the possibility of a clerical error during program entry If the LED does not start flashing check t...

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