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Top Forums Shell Programming and Scripting The Start Of A Simple Audio Scope Shell Script... Post 302800017 by wisecracker on Sunday 28th of April 2013 05:08:12 PM
Old 04-28-2013
Well, back again after a holiday...

Found 2 bugs and 1 programming error, yup there are bugs... ;oO
The bugs are esoteric but the error is stupidity on my part... ;oD

I suspect none have been found by yourselves who are trying this out however...

Removed the bash RANDOM call and used /dev/urandom instead. It is _infinitely_ quicker for the DEMO capture mode...

The first of the _internal_sync_ routines done.
Help file updated, etc, etc...

From Command mode:-

TRIG<CR>
SYNCEQ<CR>
Caps shift u or caps shift d to decide a sync point from 15 to 240. Then <CR>...
This starts the display from the value set.
Do all this again and the trace will start from another point with the value chosen...
If the value is not found then the trace runs from the start of the waveform.raw file at the FASTEST timebase speed...

Working on neagtive going SYNCLT and positive going SYNCGT ATM...

The code has now had extensive testing on an ACER Aspire One netbook using PCLinuxOS 2009 in DEMO and DSP modes also...

Before running delete your existing /default/full/path/to/AudioScope.config file so that the
changes can take place correctly... Also manually change the zero_offset value to give a centre straight line with 0 input voltage. It is now -2 on my Macbook Pro machine...

Feedback would be welcome, TIA...

Enjoy...

Bazza...

Last edited by wisecracker; 07-14-2013 at 07:35 AM.. Reason: Code now an attachment.
 

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SYSTEMD.SCOPE(5)						   systemd.scope						  SYSTEMD.SCOPE(5)

NAME
systemd.scope - Scope unit configuration SYNOPSIS
scope.scope DESCRIPTION
Scope units are not configured via unit configuration files, but are only created programmatically using the bus interfaces of systemd. They are named similar to filenames. A unit whose name ends in ".scope" refers to a scope unit. Scopes units manage a set of system processes. Unlike service units, scope units manage externally created processes, and do not fork off processes on its own. The main purpose of scope units is grouping worker processes of a system service for organization and for managing resources. systemd-run --scope may be used to easily launch a command in a new scope unit from the command line. See the New Control Group Interfaces[1] for an introduction on how to make use of scope units from programs. IMPLICIT DEPENDENCIES
Implicit dependencies may be added as result of resource control parameters as documented in systemd.resource-control(5). DEFAULT DEPENDENCIES
The following dependencies are added unless DefaultDependencies=no is set: o Scope units will automatically have dependencies of type Conflicts= and Before= on shutdown.target. These ensure that scope units are removed prior to system shutdown. Only scope units involved with early boot or late system shutdown should disable DefaultDependencies= option. SEE ALSO
systemd(1), systemd-run(1), systemd.unit(5), systemd.resource-control(5), systemd.service(5), systemd.directives(7). NOTES
1. New Control Group Interfaces https://www.freedesktop.org/wiki/Software/systemd/ControlGroupInterface/ systemd 237 SYSTEMD.SCOPE(5)
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