Digital Discovery Kit Script example code

[sushant]

Hello,

I am using the Digital Discovery kit and below are few questions i have,

1. Can i record the logic analyser for 5s in 32 channel configuration and sampling frequency 100MHz?

2. I need a sample trigger script to trigger on two bus (like BUS1 = xx and BUS2= YY then trigger) and after trigger record the results for 2s.

3. After running the Script outputs should time stamps.

 

Thanks & Regards

 

[attila]

Hi @sushant

The Digital Discovery has 256MiB of RAM, so the length for 32bit @ 100MHz is ~0.671sec
https://digilent.com/reference/test-and-measurement/digital-discovery/start

[bryan78]

18 hours ago, attila said:

Hi @sushant

The Digital Discovery has 256MiB of RAM, so the length for 32bit @ 100MHz is ~0.671sec
https://digilent.com/reference/test-and-measurement/digital-discovery/start

If you have multiple devices is it possible to have another record where the other stops? Like a trigger out for data full?

[attila]

Hi @bryan78

It would be possible if all trigger at the same event and use different trigger positions, but each device having its own oscillator the captures may be shifted by a few samples.

[sushant]

Can you please share me sample script where two triggers on different signal is used?

[attila]

Hi @sushant

# for Digital Discovery bit order with 32 bit sampling [DIN-0:23 - DIO-24:31]
dwf.FDwfDigitalInInputOrderSet(hdwf, c_int(0))

dwf.FDwfDigitalInTriggerSet(hdwf, c_uint(0), c_uint(0), c_uint(0), c_uint(1<<6)) # DIN6 falling edge
or
dwf.FDwfDigitalInTriggerSet(hdwf, c_uint(0), c_uint(0), c_uint(1<<7), c_uint(0)) # DIN7 rising edge

# for Digital Discovery bit order with 32 bit sampling [DIO-24:39 - DIN-0:15]
dwf.FDwfDigitalInInputOrderSet(hdwf, c_int(1))

dwf.FDwfDigitalInTriggerSet(hdwf, c_uint(0), c_uint(0), c_uint(0), c_uint(1<<6)) # DIO6 (for Digital Discovery +24 DIO-30) falling edge
or
dwf.FDwfDigitalInTriggerSet(hdwf, c_uint(0), c_uint(0), c_uint(1<<7), c_uint(0)) # DIO7 (for Digital Discovery +24 DIO-31) rising edge

See the examples and manual: