Digital Discovery - Digital Out SPI

[bobql]

Hello,

In the code snippet below I can output SPI at a frequency that I need.  However, I can only output 1 continuous command.  I would like to be able to burst more that 1 command at a time at a 1000Hz frequency.  For example, instead of sending rgdData only, i would like to send  (rgdData, rgdData2, rgdData3, rgdData4 ) and repeat.  Is there any way to do this in python?  I am trying to mimic the sensor feature in the waveforms GUI.  I can do it there but not in python.    I've also attached my full python code.

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# data sent out LSB first
dwf.FDwfDigitalOutDataSet(hdwf, c_int(2), byref(rgdData), c_int(cBits))

dwf.FDwfDigitalOutWaitSet(hdwf, c_double(spi_delay(hzFreq, 1e-5)))
dwf.FDwfDigitalOutRepeatSet(hdwf,0)

dwf.FDwfDigitalOutConfigure(hdwf, c_int(1))
print("Generating output for 5 seconds...")
time.sleep(5)

dwf.FDwfDeviceCloseAll()

DigitalOut_SPI v5 32bit works.py

[attila]

Hi @bobql

Concatenate rgData1,2,3,4 and insert idle bit(s) between. Use custom pattern also for CS to activate/deactivate this, and for clock if this needs to stop in inactive state.

[bobql]

Hi Attila,

Do you have an example of how to do this?

[bobql]

On 4/30/2024 at 4:36 AM, attila said:

Hi @bobql

Concatenate rgData1,2,3,4 and insert idle bit(s) between. Use custom pattern also for CS to activate/deactivate this, and for clock if this needs to stop in inactive state.

Hi @attila,

Do you have an example in python to do this?

[attila]

Hi @bobql

See the following: DigitalOutIn_SensorPmodACLB.py

[bobql]

18 hours ago, attila said:

Hi @bobql

See the following:  DigitalOutIn_SensorPmodACLB.py 7.52 kB · 0 downloads

Perfect!  Thank you so much!