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prod/doc/index.html: split into one file per topic
This commit is contained in:
Werner Almesberger
parent
81a8e138c7
commit
e11d7b15cc
86
prod/doc/analysis.html
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86
prod/doc/analysis.html
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@ -0,0 +1,86 @@
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<TITLE>Production and testing: Fault analysis</TITLE>
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<BODY>
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<HTML>
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<H1>Production and testing: Fault analysis</H1>
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<!-- ---------------------------------------------------------------------- -->
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<H3>Component placement and orientation</H3>
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<!-- ---------------------------------------------------------------------- -->
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<H3>Supply voltages</H3>
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<!-- ---------------------------------------------------------------------- -->
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<H3>Clock frequency</H3>
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The flawless performance of the crystal oscillator is crucial for
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operation. Anomalies are easy to detect with even a low-cost oscilloscope
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and pinpoint specific problems and help to select further analysis steps.
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<P>
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The crystal used in <B>atben</B> and <B>atusb</B> has a nominal tolerance
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of +/- 15 ppm at 22-28 C. Low-cost oscilloscopes typically have a timing
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accuracy of
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+/- 100 ppm, which means that only major excursions can be detected by
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measuring the clock output with such an instrument. Full-speed USB only
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requires an accuracy of +/- 2500 ppm.
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We can therefore consider all results within a range of +/- 1000 ppm as
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sufficient, and perform more precise measurements by other means. This
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applies to <B>atben</B> as well as to <B>atusb</B>.
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<P>
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<H4>Measuring the clock on atben</H4>
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<B>atben</B> normally does not output a clock signal. A 1 MHz clock
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can be enabled with the following command:
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<PRE>
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atrf-txrx -d net:ben -C 1
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</PRE>
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This configures <B>atben</B> as a promiscuous receiver. The reception
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of any IEEE 802.15.4 frame or pressing Ctrl-C will terminate the command.
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<P>
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<TABLE>
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<TR><TH align="left">Clock<TH align="left">Action
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<TR><TD>0 Hz<TD>Check voltages; check that the clock is enabled;
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check for shorts around crystal; check connectivity of crystal
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<TR><TD>0.999-1.001 MHz, ~3.3 Vpp<TD>Perform precision measurement with
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<B>atrf-xtal</B>
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<TR><TD>Other<TD>Check voltages; check for contamination around crystal
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</TABLE>
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<P>
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<H4>Measuring the clock on atusb</H4>
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The transceiver provides the clock for the microcontroller in <B>atusb</B>.
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A clock signal is therefore always available. Immediately after reset,
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the transceiver generates a 1 MHz clock. When the microcontrolled comes out
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of reset, it raises the transceiver's clock output to 8 MHz and then
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enables USB.
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<P>
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<TABLE>
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<TR><TH align="left">Clock<TH align="left">Action
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<TR><TD>0 Hz<TD>Check voltages; check for shorts around crystal; check
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connectivity of crystal
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<TR><TD>0.999-1.001 MHz, ~3.3 Vpp<TD>Check presence of firmware; check for
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shorts on SPI signals; check connectivity of SPI signals
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<TR><TD>7.992-8.008 MHz, ~3.3 Vpp<TD>Perform precision measurement with
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<B>atrf-xtal</B>
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<TR><TD>Other<TD>Check voltages; check for contamination around crystal
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</TABLE>
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<H4>Precision measurements</H4>
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<P>
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<HR>
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Last update: 2011-05-18 <I>Werner Almesberger</I>
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<HR>
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</BODY>
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</HTML>
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33
prod/doc/flash.html
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33
prod/doc/flash.html
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@ -0,0 +1,33 @@
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<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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(atusb only)
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<!-- ---------------------------------------------------------------------- -->
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<H3>Flashing the boot loader</H3>
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<P>
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<IMG src="setup-C.png">
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<P>
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<!-- ---------------------------------------------------------------------- -->
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<H3>Flashing the application</H3>
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<P>
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<IMG src="setup-D.png">
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<P>
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<P>
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<HR>
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Last update: 2011-05-18 <I>Werner Almesberger</I>
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<HR>
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</BODY>
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</HTML>
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@ -79,251 +79,18 @@ Defective devices can be discarded or retained for a deeper analysis.
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<!-- ====================================================================== -->
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<!-- ====================================================================== -->
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<H2>Software setup</H2>
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<H2>Detailed description</H2>
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Before performing any production tests, various pieces of software
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The following pages describe the preparation and the execution of the
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need to be installed on Ben and PC, and configuration settings
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production and test process:
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@@@
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<UL>
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<LI><A href="setup.html">Software setup</A>
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<LI><A href="flash.html">Flashing (<B>atusb</B> only)</A>
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<LI><A href="test.html">Functional test</A>
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<LI><A href="analysis.html">Fault analysis</A>
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</UL>
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<!-- ---------------------------------------------------------------------- -->
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<H3>PC software installation</H3>
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@@@
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<H4>Install ben-wpan tools</H4>
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@@@
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<H4>Register Ben host name</H4>
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To simplify accessing the Ben via TCP/IP, its IP address should be
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registered in the hosts file on the PC. If the Ben is running OpenWrt,
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use the following command:
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<PRE>
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echo 192.168.254.101 ben >>/etc/hosts
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</PRE>
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<P>
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If the Ben is running Jlime, the address would be as follows:
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<PRE>
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echo 192.168.1.202 ben >>/etc/hosts
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</PRE>
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<P>
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If using the same PC with Bens running OpenWrt and Jlime, one may choose
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different host names depending on the distribution, and adapt the commands
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used in the production and testing process accordingly. For example,
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<PRE>
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echo 192.168.254.101 ben >>/etc/hosts
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echo 192.168.1.202 jlime >>/etc/hosts
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</PRE>
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<!-- ---------------------------------------------------------------------- -->
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<H3>Ben system setup</H3>
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The configuration setting described in this section are lost on each
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reset or reboot and either need to be entered again or a setup script
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running at boot time has to
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This needs to be done each time the Ben is booted.
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<H4>Enable network access</H4>
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Once the Ben has booted and started USB networking, the interface
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on the PC side is configured as follows:
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<PRE>
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ifconfig usb0 192.168.254.100 up
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</PRE>
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<P>
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These are the settings for OpenWrt, assuming the network device is
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called "usb0". If using Jlime, the command would be as follows:
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<PRE>
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ifconfig usb0 192.168.1.200 up
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</PRE>
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<H4>Silence other 8:10 card users</H4>
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Before running any of the ben-wpan utilities, other users of the 8:10
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card slot have to be disabled. In a Ben running the regular OpenWrt or
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Jlime distribution, the only such user that is automatically started
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is the MMC kernel driver. The following command disables it:
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<PRE>
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echo jz4740-mmc.0 >/sys/bus/platform/drivers/jz4740-mmc/unbind
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</PRE>
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<P>
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If a WPAN-enabled kernel has been installed, the AT86RF230 driver takes
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the place of the MMC driver. To disable it, run
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<PRE>
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echo spi2.0 >/sys/bus/spi/drivers/at86rf230/unbind
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</PRE>
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<H4>Start atrf-proxy</H4>
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On the Ben, launch the proxy daemon. We pass the option -b to background it:
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<PRE>
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atrf-proxy -b
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</PRE>
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<!-- ---------------------------------------------------------------------- -->
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<H3>Ben software installation</H3>
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<H4>Password-less remote access</H4>
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To enable password-less remote access from the PC, setup to betwork
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access to the Ben and run the following command:
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<PRE>
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ssh ben 'cat >>/etc/dropbear/authorized_keys' <~/.ssh/id_rsa.pub
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</PRE>
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<!-- ---------------------------------------------------------------------- -->
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<H3>Test profiles</H3>
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<!-- ====================================================================== -->
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<H2>Flashing (atusb only)<H2>
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<!-- ---------------------------------------------------------------------- -->
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<H3>Flashing the boot loader</H3>
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<P>
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<IMG src="setup-C.png">
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<P>
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<!-- ---------------------------------------------------------------------- -->
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<H3>Flashing the application</H3>
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<P>
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<IMG src="setup-D.png">
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<P>
|
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<!-- ====================================================================== -->
|
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<H2>Functional test</H2>
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<!-- ---------------------------------------------------------------------- -->
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<H3>Test setup for atben</H3>
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<P>
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<IMG src="setup-A.png">
|
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<P>
|
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<!-- ---------------------------------------------------------------------- -->
|
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<H3>Test setup for atusb</H3>
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<P>
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<IMG src="setup-B.png">
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<P>
|
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<!-- ---------------------------------------------------------------------- -->
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<H3>Test procedure</H3>
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<!-- ====================================================================== -->
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<H2>Fault analysis</H2>
|
|
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|
|
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<!-- ---------------------------------------------------------------------- -->
|
|
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|
|
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|
|
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<H3>Component placement and orientation</H3>
|
|
||||||
|
|
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<!-- ---------------------------------------------------------------------- -->
|
|
||||||
|
|
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|
|
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<H3>Supply voltages</H3>
|
|
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|
|
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<!-- ---------------------------------------------------------------------- -->
|
|
||||||
|
|
||||||
|
|
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<H3>Clock frequency</H3>
|
|
||||||
|
|
||||||
The flawless performance of the crystal oscillator is crucial for
|
|
||||||
operation. Anomalies are easy to detect with even a low-cost oscilloscope
|
|
||||||
and pinpoint specific problems and help to select further analysis steps.
|
|
||||||
<P>
|
|
||||||
The crystal used in <B>atben</B> and <B>atusb</B> has a nominal tolerance
|
|
||||||
of +/- 15 ppm at 22-28 C. Low-cost oscilloscopes typically have a timing
|
|
||||||
accuracy of
|
|
||||||
+/- 100 ppm, which means that only major excursions can be detected by
|
|
||||||
measuring the clock output with such an instrument. Full-speed USB only
|
|
||||||
requires an accuracy of +/- 2500 ppm.
|
|
||||||
We can therefore consider all results within a range of +/- 1000 ppm as
|
|
||||||
sufficient, and perform more precise measurements by other means. This
|
|
||||||
applies to <B>atben</B> as well as to <B>atusb</B>.
|
|
||||||
<P>
|
|
||||||
|
|
||||||
|
|
||||||
<H4>Measuring the clock on atben</H4>
|
|
||||||
|
|
||||||
<B>atben</B> normally does not output a clock signal. A 1 MHz clock
|
|
||||||
can be enabled with the following command:
|
|
||||||
<PRE>
|
|
||||||
atrf-txrx -d net:ben -C 1
|
|
||||||
</PRE>
|
|
||||||
This configures <B>atben</B> as a promiscuous receiver. The reception
|
|
||||||
of any IEEE 802.15.4 frame or pressing Ctrl-C will terminate the command.
|
|
||||||
<P>
|
|
||||||
<TABLE>
|
|
||||||
<TR><TH align="left">Clock<TH align="left">Action
|
|
||||||
<TR><TD>0 Hz<TD>Check voltages; check that the clock is enabled;
|
|
||||||
check for shorts around crystal; check connectivity of crystal
|
|
||||||
<TR><TD>0.999-1.001 MHz, ~3.3 Vpp<TD>Perform precision measurement with
|
|
||||||
<B>atrf-xtal</B>
|
|
||||||
<TR><TD>Other<TD>Check voltages; check for contamination around crystal
|
|
||||||
</TABLE>
|
|
||||||
<P>
|
|
||||||
|
|
||||||
|
|
||||||
<H4>Measuring the clock on atusb</H4>
|
|
||||||
|
|
||||||
The transceiver provides the clock for the microcontroller in <B>atusb</B>.
|
|
||||||
A clock signal is therefore always available. Immediately after reset,
|
|
||||||
the transceiver generates a 1 MHz clock. When the microcontrolled comes out
|
|
||||||
of reset, it raises the transceiver's clock output to 8 MHz and then
|
|
||||||
enables USB.
|
|
||||||
<P>
|
|
||||||
<TABLE>
|
|
||||||
<TR><TH align="left">Clock<TH align="left">Action
|
|
||||||
<TR><TD>0 Hz<TD>Check voltages; check for shorts around crystal; check
|
|
||||||
connectivity of crystal
|
|
||||||
<TR><TD>0.999-1.001 MHz, ~3.3 Vpp<TD>Check presence of firmware; check for
|
|
||||||
shorts on SPI signals; check connectivity of SPI signals
|
|
||||||
<TR><TD>7.992-8.008 MHz, ~3.3 Vpp<TD>Perform precision measurement with
|
|
||||||
<B>atrf-xtal</B>
|
|
||||||
<TR><TD>Other<TD>Check voltages; check for contamination around crystal
|
|
||||||
</TABLE>
|
|
||||||
|
|
||||||
|
|
||||||
<H4>Precision measurements</H4>
|
|
||||||
|
|
||||||
<P>
|
<P>
|
||||||
<HR>
|
<HR>
|
||||||
Last update: 2011-05-18 <I>Werner Almesberger</I>
|
Last update: 2011-05-18 <I>Werner Almesberger</I>
|
||||||
|
|||||||
121
prod/doc/setup.html
Normal file
121
prod/doc/setup.html
Normal file
@ -0,0 +1,121 @@
|
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|
<TITLE>Production and testing: Software setup</TITLE>
|
||||||
|
<BODY>
|
||||||
|
<HTML>
|
||||||
|
<H1>Production and testing: Software setup</H1>
|
||||||
|
|
||||||
|
Before performing any production tests, various pieces of software
|
||||||
|
need to be installed on Ben and PC, and configuration settings
|
||||||
|
@@@
|
||||||
|
|
||||||
|
|
||||||
|
<!-- ---------------------------------------------------------------------- -->
|
||||||
|
|
||||||
|
|
||||||
|
<H3>PC software installation</H3>
|
||||||
|
|
||||||
|
@@@
|
||||||
|
|
||||||
|
<H4>Install ben-wpan tools</H4>
|
||||||
|
|
||||||
|
@@@
|
||||||
|
|
||||||
|
<H4>Register Ben host name</H4>
|
||||||
|
|
||||||
|
To simplify accessing the Ben via TCP/IP, its IP address should be
|
||||||
|
registered in the hosts file on the PC. If the Ben is running OpenWrt,
|
||||||
|
use the following command:
|
||||||
|
<PRE>
|
||||||
|
echo 192.168.254.101 ben >>/etc/hosts
|
||||||
|
</PRE>
|
||||||
|
<P>
|
||||||
|
If the Ben is running Jlime, the address would be as follows:
|
||||||
|
<PRE>
|
||||||
|
echo 192.168.1.202 ben >>/etc/hosts
|
||||||
|
</PRE>
|
||||||
|
<P>
|
||||||
|
If using the same PC with Bens running OpenWrt and Jlime, one may choose
|
||||||
|
different host names depending on the distribution, and adapt the commands
|
||||||
|
used in the production and testing process accordingly. For example,
|
||||||
|
<PRE>
|
||||||
|
echo 192.168.254.101 ben >>/etc/hosts
|
||||||
|
echo 192.168.1.202 jlime >>/etc/hosts
|
||||||
|
</PRE>
|
||||||
|
|
||||||
|
|
||||||
|
<!-- ---------------------------------------------------------------------- -->
|
||||||
|
|
||||||
|
|
||||||
|
<H3>Ben system setup</H3>
|
||||||
|
|
||||||
|
The configuration setting described in this section are lost on each
|
||||||
|
reset or reboot and either need to be entered again or a setup script
|
||||||
|
running at boot time has to
|
||||||
|
This needs to be done each time the Ben is booted.
|
||||||
|
|
||||||
|
|
||||||
|
<H4>Enable network access</H4>
|
||||||
|
|
||||||
|
Once the Ben has booted and started USB networking, the interface
|
||||||
|
on the PC side is configured as follows:
|
||||||
|
<PRE>
|
||||||
|
ifconfig usb0 192.168.254.100 up
|
||||||
|
</PRE>
|
||||||
|
<P>
|
||||||
|
These are the settings for OpenWrt, assuming the network device is
|
||||||
|
called "usb0". If using Jlime, the command would be as follows:
|
||||||
|
<PRE>
|
||||||
|
ifconfig usb0 192.168.1.200 up
|
||||||
|
</PRE>
|
||||||
|
|
||||||
|
|
||||||
|
<H4>Silence other 8:10 card users</H4>
|
||||||
|
|
||||||
|
Before running any of the ben-wpan utilities, other users of the 8:10
|
||||||
|
card slot have to be disabled. In a Ben running the regular OpenWrt or
|
||||||
|
Jlime distribution, the only such user that is automatically started
|
||||||
|
is the MMC kernel driver. The following command disables it:
|
||||||
|
<PRE>
|
||||||
|
echo jz4740-mmc.0 >/sys/bus/platform/drivers/jz4740-mmc/unbind
|
||||||
|
</PRE>
|
||||||
|
<P>
|
||||||
|
If a WPAN-enabled kernel has been installed, the AT86RF230 driver takes
|
||||||
|
the place of the MMC driver. To disable it, run
|
||||||
|
<PRE>
|
||||||
|
echo spi2.0 >/sys/bus/spi/drivers/at86rf230/unbind
|
||||||
|
</PRE>
|
||||||
|
|
||||||
|
|
||||||
|
<H4>Start atrf-proxy</H4>
|
||||||
|
|
||||||
|
On the Ben, launch the proxy daemon. We pass the option -b to background it:
|
||||||
|
<PRE>
|
||||||
|
atrf-proxy -b
|
||||||
|
</PRE>
|
||||||
|
|
||||||
|
|
||||||
|
<!-- ---------------------------------------------------------------------- -->
|
||||||
|
|
||||||
|
|
||||||
|
<H3>Ben software installation</H3>
|
||||||
|
|
||||||
|
<H4>Password-less remote access</H4>
|
||||||
|
|
||||||
|
To enable password-less remote access from the PC, setup to betwork
|
||||||
|
access to the Ben and run the following command:
|
||||||
|
<PRE>
|
||||||
|
ssh ben 'cat >>/etc/dropbear/authorized_keys' <~/.ssh/id_rsa.pub
|
||||||
|
</PRE>
|
||||||
|
|
||||||
|
|
||||||
|
<!-- ---------------------------------------------------------------------- -->
|
||||||
|
|
||||||
|
|
||||||
|
<H3>Test profiles</H3>
|
||||||
|
|
||||||
|
|
||||||
|
<P>
|
||||||
|
<HR>
|
||||||
|
Last update: 2011-05-18 <I>Werner Almesberger</I>
|
||||||
|
<HR>
|
||||||
|
</BODY>
|
||||||
|
</HTML>
|
||||||
36
prod/doc/test.html
Normal file
36
prod/doc/test.html
Normal file
@ -0,0 +1,36 @@
|
|||||||
|
<TITLE>Production and testing: Functional test</TITLE>
|
||||||
|
<BODY>
|
||||||
|
<HTML>
|
||||||
|
<H1>Production and testing: Functional test</H1>
|
||||||
|
|
||||||
|
|
||||||
|
<!-- ---------------------------------------------------------------------- -->
|
||||||
|
|
||||||
|
|
||||||
|
<H3>Test setup for atben</H3>
|
||||||
|
|
||||||
|
<P>
|
||||||
|
<IMG src="setup-A.png">
|
||||||
|
<P>
|
||||||
|
|
||||||
|
<!-- ---------------------------------------------------------------------- -->
|
||||||
|
|
||||||
|
|
||||||
|
<H3>Test setup for atusb</H3>
|
||||||
|
|
||||||
|
<P>
|
||||||
|
<IMG src="setup-B.png">
|
||||||
|
<P>
|
||||||
|
|
||||||
|
<!-- ---------------------------------------------------------------------- -->
|
||||||
|
|
||||||
|
|
||||||
|
<H3>Test procedure</H3>
|
||||||
|
|
||||||
|
|
||||||
|
<P>
|
||||||
|
<HR>
|
||||||
|
Last update: 2011-05-18 <I>Werner Almesberger</I>
|
||||||
|
<HR>
|
||||||
|
</BODY>
|
||||||
|
</HTML>
|
||||||
Loading…
Reference in New Issue
Block a user