Software trigger

[Kev' Ttn]

Hi everyone,

Today, I wanted to implement a new functionality on my RP, I wanted to save into memory the value of a timer with the FPGA when a trigger happens.

Unfortunately, I don't know how the FPGA part knows when a trigger happens. I saw into the scope part (in the vivado project) a value adc_trig. Is it the one I have to use to check if a trigger happens ?

Thank you in advance.

Regards.

Kevin.

[Nils Roos]

Hi Kevin,

The adc_trig register is indeed the one that is set when the trigger condition is met. It will remain 1 for one adc_clk_i cycle.

Cheers, Nils

[Kev' Ttn]

Hi Nils,

Thank you very much for your quick answer ! You're the best

Regards.

Kevin

[Kev' Ttn]

I have another question ... Can I light on the LEDs from a different module that housekeeping ?

[Nils Roos]

Sure, you just need to make sure that the led_o[x] line in question is only connected to one module at a time.
(Or introduce some logic to arbitrate mutliple driving modules^^)

[Kev' Ttn]

OK, I'll try to apply your advices.

Thank you very much.

[Kev' Ttn]

Hi Nils,

I just want to thank you again ! After I have applied your advices, it works great and I learnt a lot in Verilog and in FPGA

Regards

Kevin.

[Nils Roos]

You are very welcome.
If you build something that might be useful or interesting for others, don't hesitate to share