Pluto SDR

There are some undocumented features in pyadi-iio that can help create files that iio_writedev can use. Making the files by hand otherwise is kind of a pain. You will need to convert data to int16 first but pyadi-iio can generate the necessary files. With pyadi-iio you would do the following:

import adi

sdr = adi.Pluto()

sdr._push_to_file = True

sdr._output_byte_filename = "iq_data.bin"

# <Scale and convert IQ data to int16 numpy array>

....

sdr.tx(data_np) # create file

This code will create a local file you can provide to iio_writedev.

For using Pluto standalone you can use a USB stick like so to trigger attribute updates and iio_writedev:  https://wiki.analog.com/university/tools/pluto/devs/usb_otg

-Travis

Hi Travis,

I figured out to dump the file, by setting the _push_to_file variable on my working example. A file got generated.

Then I scp that file onto a Plutosdr and try making it send the file. But I cant figure the commands out.

I assume I need to set the LO frequency as well as the sample rate and attenuation. I keep getting 

/usr/bin/iio_attr -a -c -o ad9361-phy TX_LO_frequency 433500000
Scanning for IIO contexts failed: Input/output error (5)

My python code I used for sending via network was roughly:

How would I do the same using iio_attr and iio_writedev.

Kind regards

Jesper