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80 lines
2.3 KiB
HTML
80 lines
2.3 KiB
HTML
<TITLE>Production and testing: Flashing</TITLE>
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<BODY>
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<HTML>
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<H1>Production and testing: Flashing</H1>
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The microcontroller of <B>atusb</B> contains firmware that must be
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loaded before the testing process can commence. The firmware consists
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of the following two parts:
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<OL>
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<LI>The boot loader (via serial programming, using <B>avrdude</B>)
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<LI>The application (via DFU, using <B>dfu-util</B>)
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</OL>
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<P>
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Note that <B>atben</B> has no microcontroller and therefore does not need
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any flashing.
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<!-- ====================================================================== -->
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<H2>Flashing the boot loader</H2>
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The following image shows the setup for flashing the boot loader:
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<P>
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<IMG src="setup-C.png">
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<P>
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To flash the boot loader,
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<UL>
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<LI>insert the <B>atusb-pgm</B> board into the Ben
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<LI>place the <B>atusb</B> board (DUT) on the table near the Ben,
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without connecting it to USB
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<LI>place <B>atusb-pgm</B> on <B>atusb</B> as shown in the image below
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and gently push it on the contacts
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<P>
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<A href="atusb-programming.jpg"><IMG
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src="atusb-programming.jpg" width="250"></A>
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<P>
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<LI>finally, run
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<PRE>
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make flash
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</PRE>
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</UL>
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<P>
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The flashing takes about 20-30 seconds. If it should fail, make sure you
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properly placed <B>atusb-pgm</B> and try again. If it keeps on failing,
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remove <B>atusb-pgm</B> from the Ben and insert it again.
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If flashing fails despite numerous attempts, proceed to the
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<A href="analysis.html">fault analysis</A>.
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<!-- ====================================================================== -->
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<H2>Flashing the application</H2>
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The flashing script proceeds automatically to the flashing of the
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application. All you need to do is insert the <B>atusb</B> board
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into the PC:
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<P>
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<IMG src="setup-D.png">
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<P>
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The flashing script will wait up to 30 seconds for enumeration.
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Once the <B>atusb</B> board has been detected, the script transfers
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the application with DFU. After this, you can proceed with the
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<A href="test.html">functional test</A>.
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<P>
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If the board fails to enumerate, proceed with the
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<A href="analysis.html">fault analysis</A>.
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<P>
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<HR>
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Up: <A href="index.html">Production and testing</A>
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Prev: <A href="setup.html">Software setup</A>
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Next: <A href="test.html">Functional test</A>
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<HR>
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Last update: 2011-05-26 <I>Werner Almesberger</I>
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<HR>
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</BODY>
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</HTML>
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