Difference between revisions of "LeapFrog Pollux Platform: Hardwire Serial Connection"

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After some probing, I found the serial console (115200 8N1) comes out to the cartridge connector. Counting from the right, tx comes out on pin 12 and rx on pin 11.  The voltage level goes between 0 and 3.3 volts.  Hooking into a TTL to RS-232 converter, left over from another project, I can get to the console.
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The serial console (115200 8N1) comes out to the cartridge connector.
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*Counting from the right
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** tx comes out on pin 12
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** rx on pin 11.   
  
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The UART is using +3.3V TTL level which means you will need a [[RS232_Level_Shifter]] or use one of the following usb->rs232 breakout boards:
  
[File:didj-cart-pinout.jpg]
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* [http://www.dlpdesign.com/usb/usb232r.shtml FT232R from DLPDESIGN]
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* [http://www.sparkfun.com/commerce/product_info.php?products_id=718 FT232R from Sparkfun]
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* [http://www.sparkfun.com/commerce/product_info.php?products_id=8531 CP2102 from Sparkfun]
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[[File:didj-cart-pinout.jpg|thumb|500px|Picture of the pinout of the Diji cartridge slot (Underside).]]
 
Picture from [http://sites.google.com/site/claudeschwarz/didjhacking2 Claude Schwarz’s BLOG]
 
Picture from [http://sites.google.com/site/claudeschwarz/didjhacking2 Claude Schwarz’s BLOG]
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<br>
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[[File:didj-uart.jpg|thumb|500px|TX, RX, GND, and VCC soldered directly to the pins.]]
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<br>
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* Green UART-TX
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* Grey UART-RX
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* Black GROUND
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* Red +3.3V
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The +3.3V isn't needed for all Uart connections, however some of the USB->RS-232 breakout boards may require a +3.3V reference voltage.
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[[Category:Didj]]

Latest revision as of 20:05, 27 July 2011

The serial console (115200 8N1) comes out to the cartridge connector.

  • Counting from the right
    • tx comes out on pin 12
    • rx on pin 11.

The UART is using +3.3V TTL level which means you will need a RS232_Level_Shifter or use one of the following usb->rs232 breakout boards:

Picture of the pinout of the Diji cartridge slot (Underside).

Picture from Claude Schwarz’s BLOG


TX, RX, GND, and VCC soldered directly to the pins.


  • Green UART-TX
  • Grey UART-RX
  • Black GROUND
  • Red +3.3V

The +3.3V isn't needed for all Uart connections, however some of the USB->RS-232 breakout boards may require a +3.3V reference voltage.