How to use libiio for AD9988 no-OS project

Hshinya

on May 11, 2023

Category: Software

Product Number: AD9988

Software Version: no-OS ad9081_updates

Hello,

I am trying to use no-OS Driver with the AD9988 on the ZCU102.
I can confirm that I have built the project according to the NO-OS Project Build Guide and it is up and running on the ZCU102.

The values are returned by READ iio:device0 INPUT voltage0 sampling_frequency via UART.
But, can not use commands like iio_info, also can not use the iio-oscilloscope.

Can anyone please advise on this?

The no-OS source code I use is the branch ad9081_updates, not master.
This is due to a bug in the AD9081 project using master.

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buha
May 15, 2023 +1 suggested
Hi Hshinya ,

As a side note, there are some errors at initialization, but they might not matter for iio.

Your libiio is 0.10, please update to a newer one, this one is currently the latest release https…
buha
May 15, 2023 in reply to Hshinya +1 verified
That's good, you clearly upgraded libiio, but something changed in the meantime which doesn't enable serial backend by default when building.

So in the build process, at the configure step, make…
Hshinya
May 17, 2023 in reply to buha +1
If I can't solve it, I will create another thread.

Now that Libiio is ready to use, I will close this question.

Thanks.

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0 buha

on May 15, 2023 8:02 AM
Hi Hshinya ,

As a side note, there are some errors at initialization, but they might not matter for iio.

Your libiio is 0.10, please update to a newer one, this one is currently the latest release https://github.com/analogdevicesinc/libiio/releases/tag/v0.24

FYI 0.10 is from 2017 :D https://github.com/analogdevicesinc/libiio/releases/tag/v0.10

I think this will fix your issue as you seem to be using everything else correctly.
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0 Hshinya
on May 15, 2023 10:31 AM in reply to buha
Thank you for your advice.

I tried updating libiio to 0.24.

The content of the error has changed.
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+1 buha

on May 15, 2023 11:13 AM in reply to Hshinya
That's good, you clearly upgraded libiio, but something changed in the meantime which doesn't enable serial backend by default when building.

So in the build process, at the configure step, make sure to run:

./configure -DWITH_SERIAL_BACKEND=ON

See here for more info: github.com/.../README_BUILD.md
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0 Hshinya

on May 16, 2023 9:25 AM in reply to buha

Things gots better, I can use Libiio command.

And then I tried connecting the iio oscilloscope. But I still can't because of gtk2 and gtk3 errors.

(While dealing with errors, the Linux environment is broken. So the update will be delayed.)

shinya@usrp2:~/makelibiio/libiio/build$ sudo iio_info -u serial:/dev/ttyUSB0,115200,8n1n
iio_info version: 0.24 (git tag:cf1c0728)
Libiio version: 0.24 (git tag: cf1c072) backends: local xml ip usb serial
IIO context created with serial backend.
Backend version: 1.1 (git tag: 0000000)
Backend description string: /dev/ttyUSB0: CP2108 Quad USB to UART Bridge Controller - F5608DCA050D0AB111EC0D1DB0AF7DA
IIO context has 2 attributes:
	no-OS: 1.1.0-g0000000
	uri: serial:/dev/ttyUSB0,115200,8n1n
IIO context has 2 devices:
	iio:device0: axi_adc (buffer capable)
		8 channels found:
			voltage0: voltage0 (input, index: 0, format: le:S16/16>>0)
			5 channel-specific attributes found:
				attr  0: calibphase value: 0.000000
				attr  1: calibbias value: 0
				attr  2: calibscale value: 0.000000
				attr  3: samples_pps ERROR: No such file or directory (2)
				attr  4: sampling_frequency value: 245780944
			voltage1: voltage1 (input, index: 1, format: le:S16/16>>0)
			5 channel-specific attributes found:
				attr  0: calibphase value: 0.000000
				attr  1: calibbias value: 0
				attr  2: calibscale value: 0.000000
				attr  3: samples_pps ERROR: No such file or directory (2)
				attr  4: sampling_frequency value: 245779418
			voltage2: voltage2 (input, index: 2, format: le:S16/16>>0)
			5 channel-specific attributes found:
				attr  0: calibphase value: 0.000000
				attr  1: calibbias value: 0
				attr  2: calibscale value: 0.000000
				attr  3: samples_pps ERROR: No such file or directory (2)
				attr  4: sampling_frequency value: 245779418
			voltage3: voltage3 (input, index: 3, format: le:S16/16>>0)
			5 channel-specific attributes found:
				attr  0: calibphase value: 0.000000
				attr  1: calibbias value: 0
				attr  2: calibscale value: 0.000000
				attr  3: samples_pps ERROR: No such file or directory (2)
				attr  4: sampling_frequency value: 245779418
			voltage4: voltage4 (input, index: 4, format: le:S16/16>>0)
			5 channel-specific attributes found:
				attr  0: calibphase value: 0.000000
				attr  1: calibbias value: 0
				attr  2: calibscale value: 0.000000
				attr  3: samples_pps ERROR: No such file or directory (2)
				attr  4: sampling_frequency value: 245780944
			voltage5: voltage5 (input, index: 5, format: le:S16/16>>0)
			5 channel-specific attributes found:
				attr  0: calibphase value: 0.000000
				attr  1: calibbias value: 0
				attr  2: calibscale value: 0.000000
				attr  3: samples_pps ERROR: No such file or directory (2)
				attr  4: sampling_frequency value: 245779418
			voltage6: voltage6 (input, index: 6, format: le:S16/16>>0)
			5 channel-specific attributes found:
				attr  0: calibphase value: 0.000000
				attr  1: calibbias value: 0
				attr  2: calibscale value: 0.000000
				attr  3: samples_pps ERROR: No such file or directory (2)
				attr  4: sampling_frequency value: 245780944
			voltage7: voltage7 (input, index: 7, format: le:S16/16>>0)
			5 channel-specific attributes found:
				attr  0: calibphase value: 0.000000
				attr  1: calibbias value: 0
				attr  2: calibscale value: 0.000000
				attr  3: samples_pps ERROR: No such file or directory (2)
				attr  4: sampling_frequency value: 245780944
ERROR: checking for trigger : Invalid argument (22)
	iio:device1: axi_dac (buffer capable)
		24 channels found:
			voltage0: voltage0 (output, index: 0, format: le:S16/16>>0)
			3 channel-specific attributes found:
				attr  0: calibscale value: 0.000000
				attr  1: calibphase value: 0.000000
				attr  2: sampling_frequency ERROR: No such file or directory (2)
			voltage1: voltage1 (output, index: 1, format: le:S16/16>>0)
			3 channel-specific attributes found:
				attr  0: calibscale value: 0.000000
				attr  1: calibphase value: 0.000000
				attr  2: sampling_frequency ERROR: No such file or directory (2)
			voltage2: voltage2 (output, index: 2, format: le:S16/16>>0)
			3 channel-specific attributes found:
				attr  0: calibscale value: 0.000000
				attr  1: calibphase value: 0.000000
				attr  2: sampling_frequency ERROR: No such file or directory (2)
			voltage3: voltage3 (output, index: 3, format: le:S16/16>>0)
			3 channel-specific attributes found:
				attr  0: calibscale value: 0.000000
				attr  1: calibphase value: 0.000000
				attr  2: sampling_frequency ERROR: No such file or directory (2)
			voltage4: voltage4 (output, index: 4, format: le:S16/16>>0)
			3 channel-specific attributes found:
				attr  0: calibscale value: 0.000000
				attr  1: calibphase value: 0.000000
				attr  2: sampling_frequency ERROR: No such file or directory (2)
			voltage5: voltage5 (output, index: 5, format: le:S16/16>>0)
			3 channel-specific attributes found:
				attr  0: calibscale value: 0.000000
				attr  1: calibphase value: 0.000000
				attr  2: sampling_frequency ERROR: No such file or directory (2)
			voltage6: voltage6 (output, index: 6, format: le:S16/16>>0)
			3 channel-specific attributes found:
				attr  0: calibscale value: 0.000000
				attr  1: calibphase value: 0.000000
				attr  2: sampling_frequency ERROR: No such file or directory (2)
			voltage7: voltage7 (output, index: 7, format: le:S16/16>>0)
			3 channel-specific attributes found:
				attr  0: calibscale value: 0.000000
				attr  1: calibphase value: 0.000000
				attr  2: sampling_frequency ERROR: No such file or directory (2)
			altvoltage0: TX1_I_F1 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 90000
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage1: TX1_I_F2 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 90000
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage2: TX1_Q_F1 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 0
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage3: TX1_Q_F2 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 0
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage4: TX2_I_F1 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 90000
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage5: TX2_I_F2 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 90000
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage6: TX2_Q_F1 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 0
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage7: TX2_Q_F2 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 0
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage8: TX3_I_F1 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 90000
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage9: TX3_I_F2 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 90000
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage10: TX3_Q_F1 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 0
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage11: TX3_Q_F2 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 0
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage12: TX4_I_F1 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 90000
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage13: TX4_I_F2 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 90000
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage14: TX4_Q_F1 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 0
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
			altvoltage15: TX4_Q_F2 (output)
			5 channel-specific attributes found:
				attr  0: raw ERROR: No such file or directory (2)
				attr  1: phase value: 0
				attr  2: scale value: 0.049987
				attr  3: frequency value: 2996532
				attr  4: sampling_frequency ERROR: No such file or directory (2)
ERROR: checking for trigger : Invalid argument (22)
shinya@usrp2:~/makelibiio/libiio/build$

0 buha

on May 16, 2023 12:45 PM in reply to Hshinya
Hshinya
Great!

Latest iio-oscilloscope from master uses GTK3, the previous releases use GTK2, and I think you need to use a bit different dependencies for the latest one to work.

Perhaps it'd be better to open a different question for the iio-oscilloscope problem.
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0 Hshinya
on May 17, 2023 12:08 AM in reply to buha
If I can't solve it, I will create another thread.

Now that Libiio is ready to use, I will close this question.

Thanks.
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0 Hshinya
on May 17, 2023 12:08 AM in reply to buha
If I can't solve it, I will create another thread.

Now that Libiio is ready to use, I will close this question.

Thanks.
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