Dead board

GoogleGroups
1

Hi!

I've received my board yesterday and immediately tried to get it
working.
I created the MMC card according to http://wiki.davincidsp.com/index.php?title=MMC_Boot_Format
and used the SW from http://code.google.com/p/beagleboard/wiki/BeagleSourceCode.
I had no serial cable then and simply tried to boot it by holding down
the USER button, soon all led lit up but the board did not reappear on
the usb bus.
Later i tried it with a serial cable (straight trough, 115200 8N1).
Now i get nothing on the serial console and only the PWR led is on. I
also tried audio and HDMI; nothing...
Also on the host it doesn't show up as a usb device anymore.

Is there anything i overlooked?

Jan

2

Jan Lübbe wrote:

Hi!

I've received my board yesterday and immediately tried to get it
working.
I created the MMC card according to http://wiki.davincidsp.com/index.php?title=MMC_Boot_Format
and used the SW from http://code.google.com/p/beagleboard/wiki/BeagleSourceCode.
I had no serial cable then and simply tried to boot it by holding down
the USER button, soon all led lit up but the board did not reappear on
the usb bus.
Later i tried it with a serial cable (straight trough, 115200 8N1).
Now i get nothing on the serial console and only the PWR led is on. I
also tried audio and HDMI; nothing...
Also on the host it doesn't show up as a usb device anymore.

First, I think we should get your serial connection to work:

To verify that your PC and terminal program (which?) basically works: Do you have any other board or anything else to try to get any output from it at 115200 8N1? Then, depending on your local configuration, you will need a 1:1 or NullModem serial cable. I use a serial USB adapter which needs a NullModem cable. To connect to BeagleBoard you then need something like a IDC10 to DB9M adapter. See

http://elinux.org/BeagleBoard#RS232

and HW manual for more datails.

Goal ist to get something like "...40T..." in terminal program once the board is powered up (even without SD card). Normally, this should happen without pressing any button, just at power up. If this doesn't work press user button while powering the board and check if this changes something.

Try to use various combinations of serial cables and maybe check wiring of your "IDC10 to DB9M" until you get 40T from OMAP3 bootrom.

Any success?

Dirk

3

Serial cable should be a null-modem configuration, not straight-
through. Adapter should be wired the same as the one listed on http://del.icio.us/tag/beagleboard%2Bperipheral%2Bverified
.

For audio, did you connect to the audio out jack and power on without
pressing the USER button? The boards should be flashed to output a
noise on boot.

4

Serial cable should be a null-modem configuration, not straight-
through. Adapter should be wired the same as the one listed on http://del.icio.us/tag/beagleboard%2Bperipheral%2Bverified
.

I meant that i used a "straight" adapter cable (like this:
12In DB9 To IDC10 Serial Port Everex Cable Bracket Add DB9 Port AT Motherboard) and then used a null-model from there
to my host.

For audio, did you connect to the audio out jack and power on without
pressing the USER button? The boards should be flashed to output a
noise on boot.

I connected normal headphones to the output jack and powered the board
via USB, no sound. :confused:

What should cause the other leds to light up (which they won't do
anymore)?

5

Jan,
    If you connect PC directly, you need cross serial cable.
    simple way to make the serial cable as below:

     DB9 1 2 3 4 5
                  6 7 8 9

      beagleboard: 2 4 6 8 10
                          1 3 5 7 9

     shortcut 1 & 2 on the beagle board, connect 1 to DB9-3, connect 3
to DB9-2 connect 5 to DB9-5, so you could make 3 line shortcut cable
to the male plugin.
     You could direct connect the DB9 plugin to PC and see the log, at
least you will see the "40T".

    Do not know what kind of SD card you are using, please follow this
instruction to make the bootable SD card:
http://code.google.com/p/beagleboard/wiki/BootingBeagleBoard

Best regards,
David

6

The other LEDs are under software control. Booting into x-load/u-boot would cause them to light up.

You might try booting from an SD card, in case something caused the content of your flash to go haywire.

Are you able to get "...40T..." over the serial port when holding the USER button during power-up? Do double-check the serial wiring, because "straight-through" is not how I would describe it. The DB-9 connections go in a circle, while the IDC10 connections go from side to side.