LightCrafter Boot with Optics Removed

Yes, that was the problem.  Now it works with the old v2.5 firmware. 

Thanks for your help,

Jeremy

Pascal,

I think if R60 is removed, the issue will also be averted. However, it removes the electronic detection of the LED voltage level.

- Adam

Keynote Photonics

Hello,

I am having the same issue. How do I go about downgrading the firmware if the Lightcrafter does not finish booting?

You have to reconnect the large ribbon cable and use the GUI to install older firmware.

I've tried the latest software release (Version 2.0.1) and they did not fix the problem. 

My guess is they either forgot about this problem or they don't know how to fix it.

Jeremy

Hi Jeremy,

Thank you for your response. We continuously improve our products based on feedback we receive from customers like yourself. Previous software releases did allow the light engine to be removed. As we added features, based on customer feedback, the ability to remove the light engine was affected. The capability to operate the LightCrafter without its light engine is a feature we are considering for a future software release. 

Best regards,

Blair 

Dear Pascal,

could you please provide some more details on the steps needed for the downgrade.

I never managed to get my DLP module to connect to the PC (RNDIS or any other device never appeared in device manageer) probably because of the lack of the light engine.

However, reattaching the light engine did not get me any further than the 4th screen (about 95% in the boot sequence, i.e. no difference) and no USB device recognized.

In fact, all I want from my DLP module is to be able to revert to HDMI input with no light engine attached.

Best,

Rodrigo

Dear Pascal,

thank you for your reply.

I'm afraid using either the power supply recommended for Lightcrafter (from digikey 5V 3A) or a programmable power supply with the same settings (the HAMEG HM7044 indicated only 0.69A were consumed at 5V) produced the same results. That is, the booting sequence stops at the fourth screen at about 95%. The boot switch is set towards the DM365 (but the same result is obtained on the other position). The led next to the DM365 is constantly red whereas the others are constantly green.

Connecting a USB cable produces no change on the board or PC. I also could not retrieve any log from the UART at 115200 baud rate (the cable I prepared connects a DB9 pin 2 to the tip of the 2.5mm plug, pin 3 to the intermediate section and pin 5 to the base, but I'm not sure if that is what is required).

The color stripes are only visible in the photo, to the naked eye the projection looks fine. This is the point at which the boot freezes.

Please let me know if you have any ideas on how to get this board to finish the boot sequence (or just switch to HDMI input)

Best,

Rodrigo

Hi Pascal,

here's the log I just got

-----------------------------------------------
LightCrafter - NAND Boot
-----------------------------------------------
nand_size=134217728
u-boot src=0x00320800
nand_read block_idx=0x00000019 page_idx=0x00000001 len=0x00028000
block=0000001A
kernel src=0x00400000
nand_read block_idx=0x00000020 page_idx=0x00000000 len=0x00400000
block=00000040
file-system src=0x00800000
nand_read block_idx=0x00000040 page_idx=0x00000000 len=0x00500000
block_idx=0x00000042 page_idx=0x00000027 Read failed!
block=00000068
uboot read failed

does that help?

Hi Rodrigo,

Thanks for the log. Were you booting from SD this time?

If not, can you copy the dm365 image booting from SD card and boot the LightCrafter from SD card. The D1 LED next to DM365 should be green. If this fixes the issue, then you can upgrade the dm365 booting from NAND. From your log, it looks the DM365 is not getting the right data from NAND.

Regards,

Divya

Hi Divya,

That worked. The boot, from the SD card with dm3xx_sd.dat, was successful this time, there are blue, green and red vertical bars appearing after the 4 images from the boot process and the USB connection seems to work fine now.

The HDMI input however does not show more than a black screen or a black screen with a red outline.

I guess this is a resolution problem (can't get my PC resolution to go below 800x600) and apparently DLP3000 only supports input Resolutions 608x684, 864x480,854x480 (WVGA), 640x480 (VGA), 320x240. 

Any suggestions of how to generate a valid signal for the HDMI? (Harware/software)

Best,

Rodrigo

Hi Rodrigo,

Thanks for the update.

When you change the display mode to "HDMI Video", you will see the black image with red outline. You have to change the Graphical properties on your host machine to "Extend" or "Clone" the display.

On the resolution, there are two different EDIDs on LightCrafter. The EDID_LightCrafter_608x684.bin file supports the above mentioned resolutions and this is the default file on LightCrafter. The EDID_LightCrafter_864x480.bin file supports several other resolutions. You will have to upgrade the LightCrafter with this EDID from the "Solutions/Upgrade" tab on the GUI.

Since you are intending to remove the LightCrafter, downgrade the MSP430 to v2.5.

Regards,

Divya

Hi Jeremy,

I have v2.7 and it seems removing optics is still a problem with v2.7 and I am having trouble locating the version on ti's website. Where did you get the older v2.5 ?

Thanks in advance,

Nisar

There is a link to the older version but it appears that the software download is not working.  I have the file DLPLightCrafter_FW_SW_v1.0_2012_01_23.zip  I think this is what you need.

Jeremy

Jeremy,

Thanks for actively helping the LightCrafter Community.

You are right, the MSP430 v2.5 is part of the DLP LightCrafter Firmware and Software Bundlev1.1

I have double checked and the download link is working.

Regards,

Divya

Dear Divya,

thank you for the EDID information, I changed it to 864x480 and the MSP430 to version 2.5.

Unfortunately I still don't get the video projected properly (using a monitor i see it fine - 'Extend' was ok). The most basic output from the PC is 800x600 (16-bit, Windows 7 only offers 16 or 32 bit as options).  Could this be the problem?

Best,

Rodrigo

Dear Rodrigo,

Sorry for a delayed response.

I think it also depends on what resolutions your host machine supports. From your message it looks like you were able to stream the video when you extended the display, is that right?

Can you post your GUI settings and your display settings?

Thanks,

Divya