DLPDLCR3310EVM: DLPDLCR3310EVM: It suddenly crashed when I was in the middle of using it

Hello User,

Welcome back to the E2E forums and we hope to assist you with your questions.

Can you try the following action items:

1.)

Have you tried downloading and reprogramming the latest firmware onto your system?

2.)

So it looks like the two green LEDs you are seeing on the bottom board are D8 and D9 correct?

These LEDs are connected to the HOST_IRQ signal from the DLPC3437 controller.

From the DLPC3437 datasheet this is the description of HOST_IRQ.

Perhaps for some reason the HOST_IRQ is not being set low and the system goes into a state of initialization. 

Can you try to probe TP13 and TP34 from the above schematic and see what it reads if those signals are a logic high?

3.)

It looks like from your previous E2E posts you made some hardware modifications to the EVM correct? Can you provide more details?

4.)

In the GUI you can go to advanced mode in the top right corner.

Can you then go to System under projector control and read system status, does it show any errors?

Regards,

Alex Chan

A4:  I opened the software to see if any status prompts appeared, but no information appeared when the projector was abnormal. The only prompt was that the software asked me to turn on the projector, but my switch was on and the light status was the same as yesterday. 

A1:  I tried to update my EVM with the software you mentioned, but "vertify failed" appeared after the update progress bar ran out, and then my EVM situation got worse...

At present, the EVM cannot project at all, even if it is restarted, it cannot project. I am using updated software and it is in compliance with the regulations. I am using version 7.4 or later.

A2:  I noticed that after the update failed today, the lights D6, D7, D8, and D9 were all on. Yesterday, I mentioned that before and after the failure, D6 and D7 were on, and D8 and D9 were on.

A3:  The current modification I have made is to disassemble the original black bracket of the circuit board. The reason is that my current mechanism needs better space, but I am afraid that the circuit board will be overheated, so I installed a cooling fan and heat sink for it. , I use my own LED, and there is no problem with the supply of voltage and current, because the LED light signals are all normal.

The above is my reply, please help me solve it.
Thank you Alexander Chan

Hello User,

The firmware update may not be working with the GUI, you will have to follow these steps here:

https://e2e.ti.com/support/dlp-products-group/dlp/f/dlp-products-forum/1119952/faq-spi-flash-device-with-soic-clip-guide-for-corrupted-devices

Additionally did you ever try to measure TP34?

I tested this with a working system in the TI lab and it should be low during normal operation and high at the beginning when you switch PROJ_ON. This corresponds to the green LED D8. D8 will be on at the beginning when you switch on PROJ_ON and then turn off once the display turns on.

Regards,

Alex Chan

I tried testing the voltage at the location you provided

But no matter whether PROJ_ON is turned on or off, I see a reading value of 0

In addition, I saw that the updated document requires Test Clip SOIC 8 (2x4) 、SPI Host Adapter and software. Can I borrow this from you? I am in Taiwan.
Or will you provide it? I'm a little worried that it will be abnormal after the update. In fact, this one is the second EVM. The previous one was abnormal before I made any modifications to the machine.

Please help me solve it

Thank you Alexander Chan

I used an oscilloscope to view the waveform output of TP34. I tried turning PROJ_ON on and off, but I did not see any change in the waveform.I am very sure that when I turn PROJ_ON on or off, it will be like the picture below (D6-D9 are always on)

In addition, I will prepare software and equipment to try to update my EVM and reprogram the firmware onto my system.

Thank you Alex Chan

Hello User,

If TP34 is low, green LED D8 should not be on so there is something wrong there. Please keep me updated about the firmware update if you are able to make that work.

Regards,

Alex Chan

The following is my operation process and problems:

1.I found it on the EVM and fixed and wired it as directed

then load the Firmware I downloaded from the TI website

this code pops up in the software's Data

Choose my adapters

Select the target

Select Program and Verify in the upper left corner of the GUI

Then the following warning appears

Please help me solve it

Thank you Alex Chan

Hello User,

I do not think you are programming the right chip. You want to be programming U11 and U25 as we have a dual dlpc3437 controller setup each having their own flash. Please see schematic and image below:

Note that the part is 64Mbit not 32Mbit so you will have to adjust that in the flash center GUI.

Regards,

Alex Chan

Hello Alex, 

It's a pity that the test results are still the same today. Since the results are the same as yesterday, I don't have any special screenshots.

In addition, our boss has begun to doubt the stability of 3310. Do you have any other funds? Such EVM development kit is a relatively stable product in the long run. We are currently doing development, and the back-end equipment is almost complete, and it is stuck on the front-end. Projection equipment, we are pressed for time, please provide some relevant information.

Thank you Alex 

Hello User,

The 3310EVM is typically very stable. We can recommend other products if you would like. To do so we will need to know what specifications (such as resolution) and use case is important to you. However, I have hope that we can debug this EVM.

You mentioned previously that an LED was swapped out in one of your early messages on modifications. What LED was this? Is it possible to replace this LED with the original to test?

I would be curious as to the behavior of RESETZ as Proj_on is driven to high. This can be probed with TP16. Would you be able to provide an oscilloscope plot with RESETZ (TP16 on the display board), INTZ (TP5 on the display board), and PROJ_ON (TP7 on the system board) as PROJ_ON is driven high? You have mentioned that LED's are high that correspond with these signals, but it would be helpful to see if these are consistently high or if they are briefly driving low.

Is there any change in behavior without the fan attached? Due to its size I am considering that this may be creating EMI interfering with signal integrity on the EVM.

Regarding the flash process, it may be ideal to revisit reprogramming the EVM via the GUI given the difficulty of programming via SOIC clip. You may find this guide helpful.

Also, please provide your power supply details (voltage and current). Despite the LED activity, the supply may not be compatible with the EVM.

Regards,

Austin

Hello Alex&Austin,

I have always been able to set up the EVM as my second screen, no problem with that, but what I want to do is more like the "splash images" function in the GUI, where I can operate the GUI on the first screen of my computer and I choose my own pictures to project to the second screen (GUI), but after reading the technical guide you provided, I still don’t know what to do. Can you give me a more detailed operation process?

Thank you Alex&Austin

Hello Alex,

So I can’t just use the GUI or other programs to select pictures on the first screen and have them automatically be projected full-screen on the second screen?

Thank you Alex

The input image requires me to select an .img file, but I don’t have an img file, only the image file I want to use (png or jpg). I tried to select png but this error occurred. How can I solve it?

Thank you Alex

Hello Alex,

I downloaded the firmware image file according to your instructions and followed the instructions in the GUI, but in the end this warning popped up.

Thank you Alex

Hello User,

Did you get to this step? Was your flash image successfully created? Are you seeing that error after pressing "Yes" from the below picture?

After you get to this step, you will have to use the method Austin had mentioned previously by using the new flash image. https://e2e.ti.com/support/dlp-products-group/dlp/f/dlp-products-forum/1170082/faq-dlpc3430-corrupted-flash-debug

I am not sure if the method in the GUI works here to download the new created flash directly using the DLP lightcrafter display v7.4 3310EVM

Regards,

Alex Chan