DLP4710EVM-LC: DLP4710 EVM connects to Basler USB camera external trigger

Derlin Chow

Part Number: DLP4710EVM-LC

Dear Friends

Does any one have experience on Basler USB camera external trigger (from EVM trigger 1 out) coding? Could you please lend me a hand?

I follow the instruction on Basler manual but fail to trigger the camera to grab images (patterns). Below is my setting:

Camera model aca1920-150UC (USB camera)

Camera.TriggerSelector.SetValue( TriggerSelector_FrameStart );
Camera.TriggerMode.SetValue( TriggerMode_On );
Camera.TriggerSource.SetValue ( TriggerSource_Line1 );
Camera.TriggerActivation.SetValue( TriggerActivation_RisingEdge );
Camera.TriggerDelay.SetValue(0);
Camera.ExposureMode.SetValue( ExposureMode_Timed );
Camera.ExposureTime.SetValue( 8000.0 );
Camera.AcquisitionStart.Execute( );

What shall I do next?

Thank you in advance!

Derlin

over 5 years ago

0 Kyle Rakos over 5 years ago

TI__Mastermind 20045 points

Hello Derlin,

Are you connecting your camera input to the EVM trigger output? What is the voltage level of the camera? I do not think we have personally used this camera before.

Thanks,

Kyle

0 Derlin Chow over 5 years ago in reply to Kyle Rakos

Intellectual 525 points

Hi Kyle,

I connect EVM trigger 1 (pin4) and ground (pin1) to Basler USB camera GPIO Opto-Isolated input - Line1. The voltage shall be ok because camera accepts 3.3 to 30v.

I know EVM output can be set to 5V, can't it?

Thanks!

Derlin

0 Derlin Chow over 5 years ago in reply to Derlin Chow

Intellectual 525 points

Ops, J7 can only set trigger voltage to 3.3 or 1.8V. But I think 3.3v is ok because when I use Basler App (GUI viewer) I can see the camera is grabbing images. Just don't know how to grab the images using c++ code.

Another question, if I want to use trigger in to start pattern projection. Shall I use I2C command to set it up? How shall I do it?

Thanks!

Derlin

0 Derlin Chow over 5 years ago in reply to Derlin Chow

Intellectual 525 points

Hello Kyle/TI

Is J8 of my EVM is set to accept output trigger or display? I am not sure how you define the pin number.

If I set the jumper correct, I can send a trigger signal to start the pattern projection?

Thanks!

Derlin

0 Navneet Singh over 5 years ago in reply to Derlin Chow

TI__Expert 4610 points

Hi Derlin,

Yes you need to setup the J8 and J9 jumper to setup the trigger in on 3DR pin as mentioned in the user guide page no.10 : http://www.ti.com/lit/ug/dlpu079a/dlpu079a.pdf

Thanks,

Navneet

0 Derlin Chow over 5 years ago in reply to Navneet Singh

Intellectual 525 points

Hi Kyle and Navneet,

I am able to use EVM trigger 2 out to sync with my Basler camera. Thank you!

I also want to try trigger in of EVM to project patterns, it seems like the current jumper setting (out of box) is for "trigger in". Am I correct? The board does not mark the pin number.

Derlin

0 Navneet Singh over 5 years ago in reply to Derlin Chow

TI__Expert 4610 points

Hi Derlin,

I am not sure what default configuration comes out of box. You can check at the bottom, pin 1 would be different from pin 2 and pin 3 (pin 1 has the square mark, pin2 and pin3 has circular).

I hope this helps.

Thanks,

Navneet

0 Derlin Chow over 5 years ago in reply to Navneet Singh

Intellectual 525 points

Hi Navneet,

Yes, you are right, pin1 had square mark. My EVM is set to "trigger in" mode.

Thank you!

Derlin

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DLP4710EVM-LC: DLP4710 EVM connects to Basler USB camera external trigger