DLPC3479: With single LED usage, failed to start projection.

user534742

Prodigy 175 points

Part Number: DLPC3479
Other Parts Discussed in Thread: DLPA3005

Hello,

Our designed board has only one led connected to CH1_GATE_CRL(pin19 of DLPA3005), and CH2/CH3(pin20, pin21) are open.

Under this condition, DLPA3005 seems to detect some error and doesn't go to active state, even if PROJ_ON is high.

Please advise what should we do.

Thank you for your cooperation.

over 5 years ago

0 Kyle Rakos over 5 years ago

TI__Mastermind 20045 points

Hello,

Could you please confirm what version of firmware is being used? And is this seen on the EVM or a custom board? I believe latest versions of firmware will perform an LED connection test at startup. We should be able to find ways to run with one LED though after you confirm the above questions.

Thanks,

Kyle

0 user534742 over 5 years ago in reply to Kyle Rakos

Prodigy 175 points

Hello Kyle,

- DLPC firmware version is v1.1.0.

- We are using a custom board.

>I believe latest versions of firmware will perform an LED connection test at startup.

That is exactly what I think! Waitng for a solution.

Thanks.

0 user534742 over 5 years ago in reply to user534742

Prodigy 175 points

I'm sorry, but we are in a hurry.

Let me know when you can provide us a solution.

Thanks.

0 Kyle Rakos over 5 years ago in reply to user534742

TI__Mastermind 20045 points

Hello,

Are you able to change your autoinit batch file using the GUI to only turn on the needed LEDs? As long as you only ever enable your connected LEDs this issue shouldn't occur.

Thanks,

Kyle

0 user534742 over 5 years ago in reply to Kyle Rakos

Prodigy 175 points

Hello Kyle,

I was able to solve the problem with your advice.

Thank you.

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DLPC3479: With single LED usage, failed to start projection.