ssm

thank you @attila for the reply, it is taking that much time, but the problem is that when I feed it for example 7fffffff, I am reading it as 7fff only, so it is as if I read the upper 16 bits only, how can I read the whole 32 bits? ssm

Hello everyone, I am trying to use the digital discovery board to read a series of raw 32 bits coming through pins 0 to 31. There are many examples I looked at, but all of them uses 16 bit int for the sample. I need to read them as samples, each 32 bits. I tried using the waveforms and it worked nicely. It even gave me the option to read them as unsigned numbers in decimal format which is what I need. any help is greatly appreciated, Here is a segment of my code: FDwfDigitalInInternalClockInfo(hdwf, &hzSys); FDwfDigitalInDividerSet(hdwf, hzSys/2e5); // sampling at 200KHz FDwfDigitalInSampleFormatSet(hdwf, 32); // so the size of the sample is 32 bits FDwfDigitalInBufferSizeInfo(hdwf, &cSamples); // default buffer size is set to maximum rgwSamples = new unsigned int[cSamples]; // here is the problem, the type is 16 bits, so I am reading 16 bit signed (although declared unsigned) // set trigger position to the middle FDwfDigitalInTriggerPositionSet(hdwf, cSamples/2); // not sure about this, it was in one of the examples // trigger on any pin transition FDwfDigitalInTriggerSourceSet(hdwf, trigsrcDetectorDigitalIn); FDwfDigitalInTriggerAutoTimeoutSet(hdwf, 10.0); //FDwfDigitalInTriggerSet(hdwf, 0,0,0xFFFFFFFF,0xFFFFFFFF); // I tried this, it did not work FDwfDigitalInConfigure(hdwf, true, false); // begin acquisition FDwfDigitalInConfigure(hdwf, false, true); // start do{ if(!FDwfDigitalInStatus(hdwf, true, &sts)) return 0; }while(sts != stsDone); // get the samples FDwfDigitalInStatusData(hdwf, rgwSamples, cSamples*sizeof(unsigned int)); // again the size of the sample here is 16 but this is the only thing the worked thank you Sam

but all these examples are with the AD2 not the DD board, are there any c coded examples on the digital discovery board? I am getting the following error: Open automatically the first available device Device open failed Device not supported. No compatible configuration found. Update Digilent WaveForms. FDwfDeviceOpenEx when I try to open using "FDwfDeviceConfigOpen"

working now, thanks a million

thank you for the reply, I installed the latest version 3.21.25, btw Waveforms is working well, it is the SDK that is showing the error. Compiling the code along with the link to dwf is working fine, it is just when I execute, it shows the error above. I have iMAC i5 processor with Sonoma 14.2.1. OS

Hi I am having problems running SDK on iMAC, Sonoma 14.2.1. The code is compiling fine but when I execute, I get the following: dyld[XXX]: Library not loaded: @rpath/dwf.framework/Versions/A/dwf Reference from: ... Reason: no LC_RPATH's found any ideas? thanks sm

thank you @attila

Hi @attila is there a place where I can download these SDK examples without the need to download the WF? I already have the WF working with AD2, thanks sm

thanks a million ssm

Hi @attila thank you for the great help, I am trying to compile my SDK code on a new linux ubuntu machine and I am getting the following: /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/11/../../../../lib/libdwf.so: undefined reference to `DmgtConfigureFPGA' /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/11/../../../../lib/libdwf.so: undefined reference to `DstmIO32' collect2: error: ld returned 1 exit status make: *** [Makefile:3: all] Error 1 any help is highly appreciated ssm

thank you for the help, it is working now I added Wait(2) after the two line: FDwfAnalogInChannelRangeSet(hdwf, 0, 50.0); FDwfAnalogInChannelOffsetSet(hdwf, 0, 5.0); wait(2)

thank you @attilafor your reply, should I do it like that? FDwfAnalogInChannelRangeSet(hdwf, 0, 50.0); wait(2) FDwfAnalogInChannelOffsetSet(hdwf, 0, 5.0); btw I am waiting 2 sec before configuration and after configuration

yes, that is correct, note that the signal is 5+/-0.1 V, since it is greater than 5v I put the range to be 50V, otherwise I am not using the full range of 50V additional note, the following is working fine: the signal pk2pk is +/- 0.1V and the offset is 4.8 V I am using the following code: FDwfAnalogInChannelRangeSet(hdwf, 0, 0.2); FDwfAnalogInChannelOffsetSet(hdwf, 0, 4.8);

thank you @attila for the great help, I have a sine wave signal with an offset, the signal pk2pk is +/- 0.1V and the offset is 5 V I am using the following code: FDwfAnalogInChannelRangeSet(hdwf, 0, 50.0); FDwfAnalogInChannelOffsetSet(hdwf, 0, 5.0); but I am getting the signal to be cropped at around the 5V the attached image shows the output signal

Hi @attila I have a question regarding this command line: FDwfAnalogInChannelRangeSet(hdwf, -1, 8); if I have my range to be between 3.5 V and 4 V, what value should I put here, 8V? will the bigger value, i.e. 8V instead of 4 V, reduce the precision of the value read by the scope? thank you for the help ssm

thank you @attila for the great help,

I have question regarding the connections, can I connect the WaveGen and V+/V- in series? in other words, if the ground black wire of the WaveGen global ground or ground used for the WaveGen only? if I connected V+ to GND black wire will it short the V+? please see attached image,

thank you @attila well my experiment is that I am using a constructed custom signal, this signal is run once and the result is collected during this run, the duration of this signal is short (I have different cases, some cases is in the us) I need to offset this signal, i tried to embed the offset in that signal it did not work, I tried to use the offset from the board, it did not work, so that is why I am using the PPS V+, I can switch it ON and wait before I start my experiment ssm

Dear Help, I am trying to use the programmable power supply as an offset for a signal. Using the offset with the WaveGen is not working because it is taking a long time to reach the target offset I need, so I am just using a dc power source instead. Can I use the V+ and ground to use as a power source in the circuit? I only need the positive voltage, up to 3.7V, is that possible? I can see this example in the SDK set (if you can point me to more examples I will be grateful): // set up analog IO channel nodes // enable positive supply FDwfAnalogIOChannelNodeSet(hdwf, 0, 0, 1); // enable negative supply FDwfAnalogIOChannelNodeSet(hdwf, 1, 0, 1); // master enable FDwfAnalogIOEnableSet(hdwf, true); printf("Total supply power and load percentage:\n"); for(int i = 0; i < 60; i++){ // wait 1 second between readings Wait(1); // fetch analogIO status from device FDwfAnalogIOStatus(hdwf); // supply monitor FDwfAnalogIOChannelNodeStatus(hdwf, 3, 0, &vSupply); FDwfAnalogIOChannelNodeStatus(hdwf, 3, 1, &aSupply); wSupply = vSupply * aSupply; prcSupply = 100 * (aSupply / 0.2); printf("%.3lf W \t%i%%\n", wSupply, prcSupply); // in case of over-current condition the supplies are disabled FDwfAnalogIOEnableStatus(hdwf, &fOn); if(!fOn){ // re-enable supplies FDwfAnalogIOEnableSet(hdwf, false); FDwfAnalogIOEnableSet(hdwf, true); } }

it worked, thanks a lot, I added Wait(0.1)

thank you again for the reply, >>make sure the analog-in as suffice time for prefill/pretrigger before analog-out is started, use software sleep or AnalogOutWait is there a way to estimate this time based on the SampleRate and the measurement time? or it is not relevant?

thank you @attila for the quick reply, sorry I forgot to mention that I do have a pulse at the start the goes up to 0.5V and then -0.5 to trigger the scope, you can notice that from my figure above, I thought this should be good enough to trigger the system thanks again ssm

Dear Help, I am trying to sync the scope in reading a signal applied using WaveGen for measurement, here is the code/pseudocode for the scope: SampleRate = 170.4997 NoSamples = 302 MaxVdd = 0.5 FDwfAnalogInChannelEnableSet(hdwf, -1, true); FDwfAnalogInAcquisitionModeSet(hdwf, acqmodeSingle); FDwfAnalogInChannelRangeSet(hdwf, -1, 2); FDwfAnalogInFrequencySet(hdwf, SampleRate); FDwfAnalogInBufferSizeSet(hdwf, NoSamples); FDwfAnalogInTriggerSourceSet(hdwf, trigsrcAnalogOut1); //(samples/2-10)/frequency FDwfAnalogInTriggerPositionSet(hdwf, (NoSamples/2 -10) / SampleRate); FDwfAnalogInTriggerAutoTimeoutSet(hdwf, 1.0); FDwfAnalogInTriggerTypeSet(hdwf, trigtypeTransition); FDwfAnalogInTriggerLevelSet(hdwf, 0.0); FDwfAnalogInTriggerConditionSet(hdwf, trigcondRisingPositive); FDwfAnalogInChannelFilterSet(hdwf, -1, filterAverage); FDwfAnalogInConfigure(hdwf, true, false); WaveGen setting MeasurementTime = NoSamples/SampleRate CustomSignalFreq = 1/MeasurementTime FDwfAnalogOutNodeEnableSet(hdwf, 0, AnalogOutNodeCarrier, true); FDwfAnalogOutNodeFunctionSet(hdwf, 0, AnalogOutNodeCarrier, funcCustom); FDwfAnalogOutNodeOffsetGet(hdwf, 0, AnalogOutNodeCarrier, &pvoltOutOffset); for (int i1=0; i1<NoSamples; i1++) { InputFileSamples[i1]=(OriginalInputFileSamples[i1]-pvoltOutOffset)/EXP->MaxVdd; } FDwfAnalogOutNodeDataSet(hdwf, 0, AnalogOutNodeCarrier, InputFileSamples, NoSamples); FDwfAnalogOutNodeFrequencySet(hdwf, 0, AnalogOutNodeCarrier, CustomSignalFreq); FDwfAnalogOutRunSet(hdwf, 0, 1.0 / CustomSignalFreq); FDwfAnalogOutNodeAmplitudeSet(hdwf, 0, AnalogOutNodeCarrier, MaxVdd); The Measured Signal is the one read by the scope and it is supposed to be like the signal above it, please can you tell me what am I doing wrong? thank you for the help, ssm

finally it worked, when I used the following: sudo dpkg -i digilent.waveforms_3.17.1_arm64.deb the one below did not work, it kept showing me that adept is not installed: sudo apt-get install digilent.adept.runtime thank you @attila

Hi @attila thanks for the reply, it seems to remove the package, otherwise if I keep it and try to compile my code it doesn't complete: sudo apt --fix-broken install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages will be REMOVED: digilent.waveforms 0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. 1 not fully installed or removed. After this operation, 51.2 MB disk space will be freed. Do you want to continue? [Y/n] y (Reading database ... 94853 files and directories currently installed.) Removing digilent.waveforms (3.17.1) ... Processing triggers for mime-support (3.62) ... Processing triggers for gnome-menus (3.31.4-3) ... Processing triggers for man-db (2.8.5-2) ... Processing triggers for shared-mime-info (1.10-1) ... Processing triggers for desktop-file-utils (0.23-4) ... b.t.w. here is the release details: cat /etc/os-release PRETTY_NAME="Debian GNU/Linux 10 (buster)" NAME="Debian GNU/Linux" VERSION_ID="10" VERSION="10 (buster)" VERSION_CODENAME=buster ID=debian HOME_URL="https://www.debian.org/" SUPPORT_URL="https://www.debian.org/support" BUG_REPORT_URL="https://bugs.debian.org/"