Other Parts Discussed in Thread: TMDXEVM3358
Hi!
I just got my TMDXEVM3358 (AM335x General Purpose EVM), followed the Quick Setup guide:
Steps:
1 & 2: verified the DIP switches were set according to the photo (they were set that way out of the box).
3: plugged in supplied serial null-modem to a known-working port on my computer (USB to Serial device).
4: skipped (I did NOT plug in an Internet-enabled Ethernet, knowing I could do this later if I wanted to demo the browser).
5: skipped (I did not remove the plastic from the LCD touch screen though I know I will need to later for best capacitive-touch response).
6: I inserted the supplied Linux SD card into the EVM baseboard as shown (conductor-side facing the board, picture side facing away from board).
7: Plugged in the power cable from the supplied power supply (verified to be 5V x 3A power supply, part number EMSA050300-P6P-SZ).
8: switched on power.
The LED labeled "POWER" came on (on the LCD board), and the 2 lower-left LEDs in the grid of 8 LEDs came on (on the daughter board). The backlight on the LCD display flickered within a few milliseconds of the power switch going on. However, no image has yet displayed on the LCD display. (It's black.) I waited several minutes, with no change.
I checked the voltage on the backlight (red/black wire pair going to lower-left corner of LCD display: 7.68V).
The, on a hunch, I powered the EVM down and took at a look at the software on the SD card by plugging it into my PC. The LABEL on the SD card indeed shows "AM335x EVM" with a Linux penguin on it. However, the VOLUME label on the SD card is "BeagleBone" with the TI icon! That much doesn't look right. The files on the card are:
X:\>dir /s
Volume in drive X is boot
Volume Serial Number is 364E-7031
Directory of X:\
05/23/2012 02:00 PM 37,403 MLO
05/23/2012 02:00 PM 140 autorun.inf
05/23/2012 02:00 PM 176,621 beaglebone-quickstartguide.pdf
05/23/2012 02:00 PM 2,371,014 quickstartguide.pdf
05/23/2012 02:00 PM 231,388 u-boot.img
05/23/2012 02:00 PM 3,061,672 uImage
05/23/2012 02:00 PM <DIR> windows_users
04/11/2012 08:27 AM 53 pointercal
04/11/2012 08:29 AM 1 .ipaddr
8 File(s) 5,878,292 bytes
Directory of X:\windows_users
05/23/2012 02:00 PM <DIR> .
05/23/2012 02:00 PM <DIR> ..
05/23/2012 02:00 PM 3,491 windows_users.htm
05/23/2012 02:00 PM 175,616 BeagleBoneWindows.exe
2 File(s) 179,107 bytes
Total Files Listed:
10 File(s) 6,057,399 bytes
3 Dir(s) 66,779,136 bytes free
The SIZE column is in BYTES.
So there is 6 MB on an 8 GB SD card, and this seems to be the files intended to be on a boot SD for the BeagleBone, not the AM335x Linux demo SD!
Further discrepancy: I downloaded the am335x-evm-02.00.01.07.img.zip from the http://software-dl.ti.com/processor-sw/esd/PROCESSOR-SDK-LINUX-AM335X/latest/index_FDS.html page (that I found looking for the SD-card files), and uncompressed, it is right around 4 GB (not 6 MB) uncompressed!
(Alert to TI staff: if my diagnosis is correct thus far, someone should look into this quickly, because this SD card is the one and only SD card in the box, and it is labeled as "AM335x EVM", but the contents of the SD card is in error! Could be a mis-labeled batch of SD cards!)
I am about to go out and purchase a few 8 GB SD cards so I can write the image to an SD card (without altering the contents of the supplied SD card). I'll report in here after I have the image on the new SD cards with file comparisons.
If anyone has any other advice, please chime in. :-)
Kind regards,
Vic
