UmTRX Diagnostic Port

OK my Fairwaves (http://fairwaves.ru/) UmTRX (http://code.google.com/p/umtrx/) lab environment has arrived so this will be the first of many blog posts!

Here is a picture of what comes in the box:

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Below is the schematic of the USB diagnostic port:

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The USB to serial UART interface is provided by a FTDI FT232R (http://www.ftdichip.com/Products/ICs/FT232R.htm)

So firstly we need to install the FTDI Virtual COM port (VCP) drivers from here:
http://www.ftdichip.com/Drivers/VCP.htm

Then we connect with a mini-B USB cable (USB B-M5-SMD) and run a terminal emulator such as Real Term. The COM port settings need to be:

  • Baud = 230400
  • Stop Bits = 1
  • Parity = None
  • Flow Control = Off

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When the UmTRX is reset we get output on the diagnostic port:

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More soon!

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