[Analog Discovery 2 on Raspberry Pi 4 with Windows 11 (ARM64)]

Szia @Andras

The software is not available natively for Windows ARM64, only for Windows 32/64bit, Linux 32/64 bit intel/arm (x86, amd64, armhf, arm64) and MacOS 32/64.
It is also working with MacOS M1/ARM seamlessly with emulation. 

As I read, Windows ARM also provides intel emulation:
https://blogs.windows.com/windows-insider/2020/12/10/introducing-x64-emulation-in-preview-for-windows-10-on-arm-pcs-to-the-windows-insider-program/

The error is complaining about "Visual C++ Redistributable for Visual Studio 2015".
This is included in the WF installer but WinARM may need a different variant. Please try installing it manually:
https://www.microsoft.com/en-us/download/details.aspx?id=48145
https://answers.microsoft.com/en-us/windows/forum/all/unable-to-install-programs-due-to-vcruntime140dll/3a9cba87-6dfd-4591-94d6-08c347e2db39

[WaveForms SDK: Silent Crash (Multiple Analog Discovery II's)]

Hi @maling

I run the following code with 10 device for more than 10minutes several times without any problem.
multi.py similar to your GetSpectra()

 

I only got error when disconnecting the USB cable:

At which function it fails for you?
For the error message use print(szerr.value) or cast the C string.

from ctypes import *
import sys
import time
from dwfconstants import *

if sys.platform.startswith("win"):
    dwf = cdll.dwf
elif sys.platform.startswith("darwin"):
    dwf = cdll.LoadLibrary("/Library/Frameworks/dwf.framework/dwf")
else:
    dwf = cdll.LoadLibrary("libdwf.so")

szerr = create_string_buffer(512)

def FDwf(fun, args):
    if fun(*args) == 0:
        dwf.FDwfGetLastErrorMsg(szerr)
        print(szerr.value)
        raise

#dwf.FDwfParamSet(DwfParamOnClose, c_int(1)) # 0 = run, 1 = stop, 2 = shutdown

cDevice = c_int()
dwf.FDwfEnum(c_int(0), byref(cDevice))
print("Devices: "+str(cDevice.value))

hdwfs = []
for k in range(cDevice.value):
    hdwf = c_int()
    FDwf(dwf.FDwfDeviceOpen, [c_int(k), byref(hdwf)])
    hdwfs.append(hdwf)

for k in range(len(hdwfs)):
    FDwf(dwf.FDwfAnalogImpedanceReset, [hdwfs[k]])
    FDwf(dwf.FDwfAnalogImpedanceModeSet, [hdwfs[k], c_int(8)]) # 0 = W1-C1-DUT-C2-R-GND, 1 = W1-C1-R-C2-DUT-GND, 8 = AD IA adapter
    FDwf(dwf.FDwfAnalogImpedanceReferenceSet, [hdwfs[k], c_double(1e3)]) # reference resistor value in Ohms
    FDwf(dwf.FDwfAnalogImpedanceFrequencySet, [hdwfs[k], c_double(1e3)]) # frequency in Hertz
    FDwf(dwf.FDwfAnalogImpedanceAmplitudeSet, [hdwfs[k], c_double(1)]) # 1V amplitude = 2V peak2peak signal
    FDwf(dwf.FDwfAnalogImpedanceConfigure, [hdwfs[k], c_int(1)]) # start

tstart = time.time()
sts = c_byte()
for j in range(100): # repeat
    for i in range(100): # steps
        for k in range(len(hdwfs)): # device
            print("repeat: "+str(j)+"  step: "+str(i)+"  dev: "+str(k))
            FDwf(dwf.FDwfAnalogImpedanceFrequencySet, [hdwfs[k], c_double(1e3+99e3*i/99)]) # frequency in Hertz # Once you set a value, it will start its measurement routine automatically
        time.sleep(0.01)
        for k in range(len(hdwfs)):
            FDwf(dwf.FDwfAnalogImpedanceStatus, [hdwfs[k], None]) # ignore last capture since we changed the frequency

        # Read the result from each of the devices, once they complete.
        for k in range(len(hdwfs)):
            hdwf = hdwfs[k]
            while True:
                FDwf(dwf.FDwfAnalogImpedanceStatus, [hdwf, byref(sts)])
                if sts.value == 2:
                    break
            # Compute the resistance and reactance from the harvested values
            resistance = c_double()
            reactance = c_double()
            FDwf(dwf.FDwfAnalogImpedanceStatusMeasure, [hdwf, DwfAnalogImpedanceResistance, byref(resistance)])
            FDwf(dwf.FDwfAnalogImpedanceStatusMeasure, [hdwf, DwfAnalogImpedanceReactance, byref(reactance)])

print("Done with "+str(len(hdwfs))+" devices in "+str(time.time()-tstart)+"s")
dwf.FDwfDeviceCloseAll()

 

[Pattern generator frequency - Digital Discovery]

Hi @Limitha

It is possible to configure it up to 50MHz or the set system frequency / 2.
The FDwfDigitalOutDividerSet specifies the prescaler from 100MHz and FDwfDigitalOutCounterSet the low and high counts.
See the WF SDK manual and the samples/ py/ DigitalOut_Clock.py DigitalOut_Duty.py ... examples

[waveforms: undefined symbol: DmgrSetNetworkConnTimeout]

Hi @davorin

It requires digilent.adept.runtime >= 2.26
https://digilent.com/reference/software/adept/start

[HDMI CEC protocol decode?]

Hi @ca_michelle

The next version will show REJ for rejected broadcast messages.

Thank you for the observation.
 

[Analog Discovery 2 Multi-Device Sync]

Hi @CoreZ86

The oscilloscope in a device is one instrument. The scope channels are controlled together, one trigger, same rate... but you can use them for different purpose. The FDwfAnalogInStatus->FDwfAnalogInStatusSample returns the current ADC readings regardless of the capture state.
The wavegen channels are independent instruments.

See the following posts:

 

 

[How to control the power supply of Analog Discovery 2 on MATLAB?]

Hi @TheoMaria

As it is in the second example:
 If you are using the DAQ do not call FDwfDeviceOpen since the device can be opened only once at a time.
 The DAQ will open the device the hdwf will get value 1 and use this in the FDwf functions.

I've modified your example: Waveform_Generation2.m

...
%% Power Supply
% Load library, "hfile" is a variable that points to the location of the library

% dummy read to open device
data = read(dq, seconds(1));

if ~libisloaded('dwf')
    loadlibrary('dwf', 'C:/Program Files (x86)/Digilent/WaveFormsSDK/inc/dwf.h');
end

if calllib('dwf','FDwfAnalogIOStatus', 1) == 0 % see if device is connected
    disp('No opened device')
    return
else
    disp('Enable PS')
    calllib('dwf','FDwfAnalogIOChannelNodeSet', 1, 0, 0, 1.0); % V+ enable
    calllib('dwf','FDwfAnalogIOChannelNodeSet', 1, 0, 1, 5.0); % V+ 5V
    calllib('dwf','FDwfAnalogIOChannelNodeSet', 1, 1, 0, 1.0); % V- enable
    calllib('dwf','FDwfAnalogIOChannelNodeSet', 1, 1, 1, -5.0); % V- -5V
    calllib('dwf','FDwfAnalogIOEnableSet', 1, 1); % master enable
    pause(1) % wait to settle
end

unloadlibrary('dwf')

%% Generate a Periodic Waveform and Record Input
...

 

[HDMI CEC protocol decode?]

Hi @ca_michelle

Protocol/CEC is added to the latest WF version:

 

[How to control the power supply of Analog Discovery 2 on MATLAB?]

Hi @TheoMaria

Probably you are using an old version of WF runtime 3.7.2 which is currently required by the DAQ AD support package.

If you are using the support package this will open the device then the other functions can be called, like this

function DWFtest2();

% make sure daq opens device
daqlist("digilent")
dq = daq("digilent")
ch_in = addinput(dq, "AD1", "1", "Voltage");
[singleReading, startTime] = read(dq)

% 32 bit system
%hfile = 'C:/Program Files/Digilent/WaveFormsSDK/inc/dwf.h';
%64 bit system
hfile = 'C:/Program Files (x86)/Digilent/WaveFormsSDK/inc/dwf.h';

if ~libisloaded('dwf')
    loadlibrary('dwf', hfile);
end

if calllib('dwf','FDwfAnalogIOStatus', 1) == 0 % see if device is connected
    disp('No opened device')
else
    disp('Enable PS')
    calllib('dwf','FDwfAnalogIOChannelNodeSet', 1, 0, 0, 1.0); % V+ enable
    calllib('dwf','FDwfAnalogIOChannelNodeSet', 1, 0, 1, 5.0); % V+ 5V
    calllib('dwf','FDwfAnalogIOChannelNodeSet', 1, 1, 0, 1.0); % V- enable
    calllib('dwf','FDwfAnalogIOChannelNodeSet', 1, 1, 1, -5.0); % V- -5V
    calllib('dwf','FDwfAnalogIOEnableSet', 1, 1); % master enable
end

unloadlibrary('dwf')

end

 

[External trigger signal not recognized]

Hi @Zeyu

If you don't want to post publicly you could sent a photo with the setup to me in private message, .

Yes, see the DigitalOut_Phase.py example and the parameters can be like this:

[Can the Analog Discovery device stream A to D samples to a host via USB2/3]

Hi @Richard Sharpe

The TM devices use USB HS (2.0) and the maximum streaming rate is around 1-2MSps.
The ADP3450/3250 has 1G Ethernet providing 1-4MSps. This device can also be used in embedded Linux mode with much higher transfer rate and lower latency.
For embedded/FPGA development system see the Eclypse Z7 with Zmod.

 

[How to control the power supply of Analog Discovery 2 on MATLAB?]

Hi @TheoMaria

See the following:DWFtest.zip
The server does not allow me to add m code or m file, here you have a picture:

    calllib('dwf','FDwfParamSet', 4, 0); % DwfParamOnClose continue on Run
    calllib('dwf','FDwfDeviceAutoConfigureSet', phdwf.Value, 0); 
    calllib('dwf','FDwfAnalogIOChannelNodeSet', phdwf.Value, 0, 0, 1.0); % V+ enable
    calllib('dwf','FDwfAnalogIOChannelNodeSet', phdwf.Value, 0, 1, 5.0); % V+ 5V
    calllib('dwf','FDwfAnalogIOChannelNodeSet', phdwf.Value, 1, 0, 1.0); % V- enable
    calllib('dwf','FDwfAnalogIOChannelNodeSet', phdwf.Value, 1, 1, -5.0); % V- -5V
    calllib('dwf','FDwfAnalogIOEnableSet', phdwf.Value, 1); % master enable
    calllib('dwf','FDwfAnalogIOConfigure', phdwf.Value); % configure device

 

[AD2 Network analyser]

Hi @Malcolm

It should be able to measure the phase. The NA can use FFT mag/phase averaging and in the latest beta version added coherent average mode for testing.

See a related post:

 

[External trigger signal not recognized]

Hi @Zeyu

The RPI GPIOs are 0/3.3V signals so these won't reach the specified 3.5V trigger level, reduce this to 1.5V.
You could also generate the square signal with the other Wavegen channel or with any DIO 0/3.3V clock/pulse signal.

[Externally Triggering both Analog In and Analog Out signals]

Hi @LiamP

What do you mean by "DC offset to trigger" ?

For each instrument it can be specified the trigger slope, like rising, falling or either edge of external trigger, or wavegen rise when this starts and fall when stops.
FDwfAnalogInTriggerConditionSet, FDwfAnalogOutTriggerSlopeSet, FDwfDigitalInTriggerSlopeSet, FDwfDigitalOutTriggerSlopeSet

[ADP3450 galvanic isolation]

Duten tag @Fonso!

Yes, the Ethernet phy provides isolation as well a WiFi dongle.
For USB external isolator can be used. The cheaper ones, based on ADUM4160 are USB FS and will reduce the transfer rate. This will be mostly noticeable when streaming data, when using Scope/Logic record and Wavegen play modes.

Isolation is recommended for safety when using multiple socket powered instrument and to reduce ground loops that could cause ringing, oscillation... in measurements.
A self/battery powered tool is isolated so it is safe to use.

[WaveForms SDK: Silent Crash (Multiple Analog Discovery II's)]

Hi @maling

It would be great if you could provide a description or code/script to reproduce the issue.

The timeout failure should set some error message "API lock timeout", "Device lock timeout",...

[Precise meaning of FDwfDigitalOutPlayDataSet arguments?]

Hi @reddish

The bitPerSample specifies the sample size, the number of DIO channel to control. Like 1: will output on DIO-0 the given bit array, 2: groups of 2 bits on DIO-0-1, ...

[External trigger signal not recognized]

Hi @Zeyu

I've set to trigger and capture the same channel 2 to verify the trigger correctness.
You can get the data from the channel 1 as well:
dwf.FDwfAnalogInStatusData16(hdwf, c_int(0), byref(rgSamples1, sizeof(c_int16)*iSample), c_int(iBuffer), c_int(cSamples)) # get channel 1 data
dwf.FDwfAnalogInStatusData16(hdwf, c_int(1), byref(rgSamples2, sizeof(c_int16)*iSample), c_int(iBuffer), c_int(cSamples)) # get channel 2 data
 

[How can I do Frequency-Modulation with the AD2?]

Hi @blipton

Something like this?

[Externally Triggering both Analog In and Analog Out signals]

Hi @LiamP

Similar as it is done in the Device_Synchronization.py example, first configure each input and output channels (or the needed ones) in each device, and arm them, wait each to finish and get the data.

for iDevice in range(cDevice.value): # open and configure
  dwf.FDwfDeviceOpen(c_int(iDevice), byref(hdwf))
  ...
  rghdwf.append(hdwf.value)
  
  dwf.FDwfAnalogIn... # configure range, offset... for channels, frequency, trigger position...
  dwf.FDwfAnalogInTriggerSourceSet(rghdwf[iDevice], trigsrcExternal1) 
  dwf.FDwfAnalogInConfigure(rghdwf[iDevice], c_bool(False), c_bool(True)) # arm inputs
  
  dwf.FDwfAnalogOutCount(hdwf, byref(cChannel))
  for iChannel in range(cChannel.value):
    dwf.FDwfAnalogOut... # configure signal, amplitude, offset... run length...
    dwf.FDwfAnalogOutTriggerSourceSet(rghdwf[iDevice], c_int(iChannel), trigsrcExternal1)
    dwf.FDwfAnalogOutConfigure(rghdwf[iDevice], c_int(iChannel), c_bool(True)) # arm outputs

while True: # wait for each device capture
  fDone = True
  for iDevice in range(len(rghdwf)):
    dwf.FDwfAnalogInStatus(rghdwf[iDevice], c_int(0), byref(sts))
    if sts.value != dwfstateDone
      fDone = False
      break
  if fDone:
    break
  
for iDevice in range(len(rghdwf)): # fetch and get data
    dwf.FDwfAnalogInStatus(rghdwf[iDevice], c_int(1), None)
    dwf.FDwfAnalogInChannelCount(rghdwf[iDevice], byref(cChannel))
    for iChannel in range(cChannel.value):
        dwf.FDwfAnalogInStatusData(rghdwf[iDevice], c_int(iChannel), ...

dwf.FDwfDeviceCloseAll()

 

[HDMI CEC protocol decode?]

Hi @ca_michelle

1. Could it be the "Start interpreter form here" was set to T0 ?
Try right click and "Reset starts"

 

2. You could use Record mode to capture up to 100M samples in Logic Analyzer.
The Protocol/CEC is on the to-do list.

 

[ADP 3250 Calibration]

Hi @tmk2z

Each device is calibrated during the factory testing process. This should provide suffice precision but if you want you can recalibrate it with the WF app.

[External trigger signal not recognized]

Hi @Zeyu

The default settings for channel 2 should be fine, 50Vpk2pk 0Voff. 

Here I have connected W1 to C2 and it triggers with your slightly modified script: t2.py

[DD2 WaveForm question about displaying bus signals]

Hi @bitstre@m

In the next software version workspaces/projects will remember the expanded/collapsed state of groups (Bus, SPI...)

Thank you for the observation.