Re: Import Block "bad import syntax"

[Elmore Family]

Barry,

1) I tried this and I can specify import testpy without getting a bad syntax 
error. I generated my softrock module in exactly the same manner but still 
get the bad syntax error.

   Note that my document does say import testpy, not import squareme as you 
mentioned. Also, in order for it to work in test_var testpy.squareme(12) is 
correct.

2) When I originally created softrock I did so in a directory called 
Softrock. Upon seeing that testpy worked I moved the gr-softrock directory 
to ~/ but still no joy.

3) My intent is to create a module which will communicate with my softrock 
xcvr through its' USB interface using a PTT button and some means of 
frequency adjustment (slider or text entry). I specifically want to be able 
to issue PTT and Frequency commands. As a test I created an OOT module 
following the OOT tutorial and placed some USB code retrieved from Quisk 
code and was able to issue a PTT command. However, I couldn't seem to go 
much farther with my ideas without considerable difficulty if at all. So I 
abandoned this approach. That's when I came across the idea of using a 
noblock module so that I didn't need to deal with in/out and could put any 
code in there that I need.

4) I tried creating an Embedded Python Module some time ago but encountered 
numerous errors including Import Error: No module named epy_block_0, and 
Attribute Error. The latter I could not resolve after much anguish and 
abandoned this approach.

Note that this is the first I have worked with gnuradio or Python. I have 
found gnuradio to be a particularly difficult nut to crack. My professional 
background (now retired) was in Embedded Programming mostly in C and 
Assembly.

73,
Jim WA4YWM

-----Original Message----- 
From: Barry Duggan
Sent: Wednesday, November 11, 2020 10:46 AM
To: Elmore Family
Cc: Discuss Gnuradio
Subject: Re: Import Block "bad import syntax"

Hi Jim,

1) Have you done
https://wiki.gnuradio.org/index.php/TutorialPythonFunctions with the
changes I suggested? Did it work?

2) Did you create ~/gr-softrock in the same manner as that tutorial?

3) What is your module going to do? Is it just an audio input from a USB
dongle such as the 'Plugable USB Audio Adapter' I use on my rPi? If so,
you can use the Audio Source block with the appropriate device name for
the USB device. Look at
https://wiki.gnuradio.org/index.php/Simulation_example:_AM_transmitter_and_receiver#AM_transmitter
for an example.

4) Otherwise, it would probably be a lot simpler to use an Embedded
Python Block (https://wiki.gnuradio.org/index.php/Embedded_Python_Block)
for your softrock_usb.py program.

Keep me posted.

P.S. If you 'reply all' it will get included in the Discuss Gnuradio thread.
---
Barry Duggan KV4FV
https://github.com/duggabe

On 11/10/20 9:46 PM, Elmore Family wrote:
> Barry,
>
> Nice to be in touch with a fellow ham.
>
> I am using 3.7.5 loaded using apt-get install.
>
> I have been through the OOT tutorial, built the module in the tutorial as 
> a test. Also, added some code to it to communicate with the Softrock via 
> USB.
>
> However, I can't accomplish much more. Using a noblock module I think will 
> solve my problem.
>
> But back to the basic question - how is import softrock bad syntax?
>
> 73,
> Jim WA4YWM
>
> -----Original Message----- From: Barry Duggan
> Sent: Tuesday, November 10, 2020 10:22 PM
> To: wa4ywm@comcast.net
> Cc: Discuss Gnuradio
> Subject: Re: Import Block "bad import syntax"
>
> Hi Jim,
>
> The tutorial you cited has been deprecated in GR 3.8. Also, it doesn't
> work as written! At this point we have chosen not to update or correct
> it. The recommended tutorial is
> https://wiki.gnuradio.org/index.php/OutOfTreeModules
>
> What version of GR do you have on your rPi, and how did you load it?
>
> For the tutorial you referenced, your Import should be for testpy and
> not squareme. Also, for the Variable test_var, the value should be
> squareme(12) without the "testpy." in front of it.
>
> 73,
> ---
> Barry Duggan KV4FV
> https://github.com/duggabe
>
> ---
> On Mon, 9 Nov 2020 10:13:53 -0500, Elmore's wrote:
>
> I have a problem as indicated in the subject line that has me totally
> baffled.
>
> I have created a noblock module with gr_modtool called softrock. This
> module has been successfully created and lives in
> /usr/local/lib/python2.7/dist-packages/softrock. It contains a file
> softrock_usb.py.
>
> I have an existing flowgraph in which I select an Import block. In the
> Import line in Properties I type “import softrock” (without quotes). I
> get the error “bad import syntax”.
>
> I used the document TutorialPythonFunctions from the gnuradio wiki as
> guidance for this task.
>
> I have performed extensive searching for this issue but everything
> points back to simply adding the word “import” in front of the module 
> name.
>
> I have tried completely clearing the text box thinking that there might
> be extraneous characters present.
>
> This seems so simple that I am baffled why it isn’t working.
>
> My platform is a Raspberry Pi 3 with Raspbian Jessie.
>
> Thanks for any help you might give me.
>
> Jim

--
This email has been checked for viruses by AVG.
https://www.avg.com