Comment out U-Boot Installation section for now.
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@ -585,59 +585,60 @@ compilation).
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%FIXME: dg: can you get me a screen shot for the Kernel Log above, and paste
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%FIXME: dg: can you get me a screen shot for the Kernel Log above, and paste
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%in the output of running busybox ?
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%in the output of running busybox ?
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\section{U-Boot Installation}
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The U-Boot installation process is substantially more complicated than the
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%% \section{U-Boot Installation}
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firmware update. The investigator purchased the optional a serial cable
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along with the TPE-NWIFIROUTER, in order to complete the U-Boot installation
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per the instructions in'' -boot\verb0_0reflash''.
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However, we were
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%% The U-Boot installation process is substantially more complicated than the
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only able to read data from the serial port; we were unable to interrupt the
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%% firmware update. The investigator purchased the optional a serial cable
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boot process or access the U-Boot console to complete the U-Boot re-flash. Here
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%% along with the TPE-NWIFIROUTER, in order to complete the U-Boot installation
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are the steps we tried:
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%% per the instructions in'' -boot\verb0_0reflash''.
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* We found the serial cable included was a USB serial adapter that had a male
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%% However, we were
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USB type A connector on one end and 4 female jumper wires at the other end.
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%% only able to read data from the serial port; we were unable to interrupt the
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These female jumper wires were red, black, white, and green.
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%% boot process or access the U-Boot console to complete the U-Boot re-flash. Here
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* The instructions did not specify how to connect these wires, but we were able
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%% are the steps we tried:
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to determine this in part using the "v8.4" image (close to our "v8.2" router)
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at \url{http://wiki.openwrt.org/toh/tp-link/tl-wr841nd#serial.console} . Aside from
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%% * We found the serial cable included was a USB serial adapter that had a male
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power and ground (red and black), we did have to guess which of the wires was
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%% USB type A connector on one end and 4 female jumper wires at the other end.
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RX and TX. By experimentation we found that green was RX and white was TX.
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%% These female jumper wires were red, black, white, and green.
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When we tried the other way, we received no data to our serial console at boot
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%% * The instructions did not specify how to connect these wires, but we were able
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time.
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%% to determine this in part using the "v8.4" image (close to our "v8.2" router)
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* We did have to use the included jumper pin gender changer with the USB serial
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%% at \url{http://wiki.openwrt.org/toh/tp-link/tl-wr841nd#serial.console} . Aside from
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adapter, which we put through the holes on the router's mainboard and then
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%% power and ground (red and black), we did have to guess which of the wires was
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connected to the USB serial adapter. The fit was fairly loose so it would be
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%% RX and TX. By experimentation we found that green was RX and white was TX.
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nice if future router versions included a tighter gender changer or (ideally)
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%% When we tried the other way, we received no data to our serial console at boot
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had the jumper pins soldered onto the board to begin with (so no gender
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%% time.
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changer would be required).
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%% * We did have to use the included jumper pin gender changer with the USB serial
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* We used 115200 8N1 as our serial console settings (with no hardware or
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%% adapter, which we put through the holes on the router's mainboard and then
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software flow control). This was tested with both the minicom and screen
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%% connected to the USB serial adapter. The fit was fairly loose so it would be
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commands. We found that if we connected all 4 wires on the USB serial adapter
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%% nice if future router versions included a tighter gender changer or (ideally)
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that the router would start without additional power and our console would
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%% had the jumper pins soldered onto the board to begin with (so no gender
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receive the startup messages. We could replicate the same behavior by
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%% changer would be required).
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omitting the power cable from the USB serial adapter (red wire) and connecting
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%% * We used 115200 8N1 as our serial console settings (with no hardware or
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the main power adapter to the router instead.
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%% software flow control). This was tested with both the minicom and screen
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* While we did see the U-Boot and kernel boot logs in our serial console, we
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%% commands. We found that if we connected all 4 wires on the USB serial adapter
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were unable to interrupt the boot process as u-boot\verb0_0reflash indicated we
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%% that the router would start without additional power and our console would
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should. We suspect this is a misconfiguration of our serial console, but it's
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%% receive the startup messages. We could replicate the same behavior by
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unclear exactly how it is misconfigured, as we were able to receive data fine
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%% omitting the power cable from the USB serial adapter (red wire) and connecting
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(we just couldn't send data to the router).
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%% the main power adapter to the router instead.
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* As a result, we were unable to complete the U-Boot installation test. We did
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%% * While we did see the U-Boot and kernel boot logs in our serial console, we
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appreciate that installation instructions were included, though these
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%% were unable to interrupt the boot process as u-boot\verb0_0reflash indicated we
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instructions should be updated to include more specifics about connecting the
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%% should. We suspect this is a misconfiguration of our serial console, but it's
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serial cable. Since ThinkPenguin does have the option to ship a serial
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%% unclear exactly how it is misconfigured, as we were able to receive data fine
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adapter with the router, it would be helpful if instructions specific to that
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%% (we just couldn't send data to the router).
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adapter were included, as the wiring configuration one should use was unclear.
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%% * As a result, we were unable to complete the U-Boot installation test. We did
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* Additionally, instructions for removing the router's case should be included.
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%% appreciate that installation instructions were included, though these
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We found that the two screws that needed removal to open the case were hidden
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%% instructions should be updated to include more specifics about connecting the
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underneath rubber feet on the case. Indicating which feet need removal to
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%% serial cable. Since ThinkPenguin does have the option to ship a serial
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unscrew the case would be helpful. The instructions should also note that the
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%% adapter with the router, it would be helpful if instructions specific to that
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case needs to be carefully separated once the screws are removed; it
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%% adapter were included, as the wiring configuration one should use was unclear.
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effectively snaps apart, but care must be taken to avoid breaking the plastic
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%% * Additionally, instructions for removing the router's case should be included.
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fasteners that keep the case together after the screws are removed.
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%% We found that the two screws that needed removal to open the case were hidden
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%% underneath rubber feet on the case. Indicating which feet need removal to
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%% unscrew the case would be helpful. The instructions should also note that the
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%% case needs to be carefully separated once the screws are removed; it
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%% effectively snaps apart, but care must be taken to avoid breaking the plastic
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%% fasteners that keep the case together after the screws are removed.
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\section{Firmware Comparison}
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\section{Firmware Comparison}
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