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Observer josecm
Observer
665 Views

vcu1525 status leds

Hello, I've been trying to use the status leds (DS3) visible through a cut-out in the PCIe end bracket IN A VCU1525 to get some feedback. However, I've not had any success. I've believed the design is being correctly programmed in the device as the driver recognizes de PCIe device with the configured device and vendor ids. In desperation I've tried to apply a constant high value to the pins related to these leds (BA20, BB21, BC21) to see if the leds will be always on or off (depending if they're active low or high), but the yellow leds is constant, the green one is blinking and the red one is turned off. Below I show the block design an io assignment for this test. What I'm doing wrong? I'm I even able to control these leds?

 

Thank you in advance

Screenshot_2.png
Screenshot_1.png
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4 Replies
Moderator
Moderator
565 Views

Re: vcu1525 status leds

Hello @josecm,

 

Yes, you can use these LEDs for status indication.

Can you please share how you have applied constraints for these LEDs ?

ds3.JPG

they should be something like above. you can refer master constraint file given under user guide.

 

Thank you.

 

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Observer josecm
Observer
553 Views

Re: vcu1525 status leds

@kvasantr thank you for your answer- Above I already show the I/O ports tab which I believe has these constraints. Nevertheless, below I show a screenshot of the xdc file with the led constraints.

Screenshot_3.png
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Visitor mzofchak
Visitor
523 Views

Re: vcu1525 status leds

I observe the same behavior as josecm when trying to write to the Status LED's (DS3).

 

I get a blink on Green and Red is always off.  I have not yet tried to drive the yellow LED.

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Observer abilashjoseph
Observer
268 Views

Re: vcu1525 status leds

I also observe the same behavior. We are not able to access the Red, Green and Yellow LED's from the FPGA.

How should we control these LED's from FPGA?

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