Send Bristol mailing list submissions to
bristol@mailman.lug.org.uk
To subscribe or unsubscribe via the World Wide Web, visit
https://mailman.lug.org.uk/mailman/listinfo/bristol
or, via email, send a message with subject or body 'help' to
bristol-request@mailman.lug.org.uk
You can reach the person managing the list at
bristol-owner@mailman.lug.org.uk
When replying, please edit your Subject line so it is more specific
than "Re: Contents of Bristol digest..."
Today's Topics:
1. Re: Looking for help writing firmware. (Martin)
2. Re: Download overnight (D J Stewart)
3. Looking for help writing Firmware (Mik Phelps)
4. Re: Download overnight (peter@hemmings.eclipse.co.uk)
5. Re: Looking for help writing firmware. (Amias Channer)
----------------------------------------------------------------------
Message: 1
Date: Sun, 19 Apr 2015 14:28:43 +0100
From: Martin <inkubus@interalpha.co.uk>
To: bristol@mailman.lug.org.uk
Subject: Re: [bristol] Looking for help writing firmware.
Message-ID: <1429450123.12909.55.camel@raphael>
Content-Type: text/plain; charset="UTF-8"
On Sat, 2015-04-18 at 14:16 +0100, Alex wrote:
> Hello all,
>
>
> I'm new here but was recommended to join as I gather there are some
> talented people here who might be able to assist in my project.
>
>
> The idea is to produce a hardware digital audio processing product
> that doesn't exclude Linux users. Typically, parameters are updated in
> software on the users computer but currently these products are
> largely Windows only with some offering Mac versions. I plan to
> produce a html page, accessed over ethernet connection, which would
> allow users to enter their parameters, regardless of OS.
>
>
> I've been developing the hardware, what I need is someone to create
> this html page and microcontroller code. The DSP tool I use makes it
> easy to generate the DSP code needed for the microcontroller but this
> page would need to modify this based on user input. The page doesn't
> need to be fancy, just functional.
>
>
> As this is a commercial project, money is available.
>
>
> Please do get in touch if you might be able to help, or know someone
> who might, we can this discuss in more detail. Feel free to ask
> questions.
To be able to meaningfully interact with a device via a web interface
will require a MAC layer, a TCP/IP stack, a web server and some web
application layer (you do want authentication so hostile people can't
change the parameters during use, right?). Even a minimal
implementation of this is a lot of code that you don't want to write
yourself (TCP/IP implementations have some *very* subtle security
requirements).
How much of this do you need for the other functionality of the device?
If the device is basically an embedded Linux box with some custom
hardware that streams things out over an ethernet port then, sure, add a
web interface, it will be little hassle. However if the device is
mostly analog magic with a small embedded microcontroller that takes
analog in and out then a web server is probably massive overkill and
you'd be better off with maybe a USB interface and then just documenting
it so people can write drivers.
In short, can you tell us a bit more about the device -- what I/O does
it have, how many CPUs, what types, etc.
Cheers,
- Martin
------------------------------
Message: 2
Date: Sun, 19 Apr 2015 20:52:46 +0100 (BST)
From: D J Stewart <bblug@iridium.org.uk>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] Download overnight
Message-ID: <alpine.DEB.2.11.1504192048560.2399@carbon>
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
On Sat, 18 Apr 2015, Peter Hemmings wrote:
> Hi,
>
> I am attempting to do the above with the previous information as below:
Well, you probably want to check your version of "su" can be invoked like
that. I have no idea which of the many "su" binaries your distribution
ships with, but the lowest commn denominator is to invoke as:
su -c 'command args' user
The username MUST be the last argument on hte string and the argument to
-c MUST be a single token if you want to be sure it will definitely work
with whichever su you happen to find yourself lumbered with. The example
given is not guaranteed to work, and certainly won't work on any system I
have access to (so nobody wins the prize for spotting the obvious error --
a nonportable su invocation).
--
Dave Stewart
------------------------------
Message: 3
Date: Mon, 20 Apr 2015 03:34:33 +0100
From: Mik Phelps <ha1ry.g1t@mypostoffice.co.uk>
To: bristol@mailman.lug.org.uk
Subject: [bristol] Looking for help writing Firmware
Message-ID: <553465B9.6040804@mypostoffice.co.uk>
Content-Type: text/plain; charset=utf-8; format=flowed
All
Certainly this is a very interesting Project that Alex has.
I'm also involved in it a bit and have have helped with some of the
hardware side of things; but unfortunately the Firmware/Software side of
it isn't my thing at all :-(
Three different frequency range 'Speakers with three Amplifiers built in
using this Loudspeaker Management System for each of my new HiFi
'Speaker boxes - all pre-set tuned specially for this application to
have everything work to it's best ability is one use for it.
More info if you are interested by Email please, as this is a Software
list after all.
So on Alex's behalf am asking again please for someone who can help with
Firmware/software in getting this very interesting project plus some
'spin-offs' moving forward please
thanks in advance
Mik
------------------------------
Message: 4
Date: Mon, 20 Apr 2015 11:15:47 +0300
From: peter@hemmings.eclipse.co.uk
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] Download overnight
Message-ID: <1429517747.470862292@f10.my.com>
Content-Type: text/plain; charset="utf-8"
Thanks for the info.
I have now found fedora does in fact have "kshutdown" in its repository!
I can wait till after 11pm start up wget and it should stop when it finishes.
Regards
--
Peter H
Sent from myMail app for Android
Sunday, 19 April 2015, 08:52pm +01:00 from D J Stewart <bblug@iridium.org.uk>:
>On Sat, 18 Apr 2015, Peter Hemmings wrote:
>> Hi,
>>
>> I am attempting to do the above with the previous information as below:
>Well, you probably want to check your version of "su" can be invoked like
>that.? I have no idea which of the many "su" binaries your distribution
>ships with, but the lowest commn denominator is to invoke as:
>?????su -c 'command args' user
>The username MUST be the last argument on hte string and the argument to
>-c MUST be a single token if you want to be sure it will definitely work
>with whichever su you happen to find yourself lumbered with.? The example
>given is not guaranteed to work, and certainly won't work on any system I
>have access to (so nobody wins the prize for spotting the obvious error --
>a nonportable su invocation).
>--
>Dave Stewart
>_______________________________________________
>Bristol mailing list
>Bristol@mailman.lug.org.uk
>https://mailman.lug.org.uk/mailman/listinfo/bristol
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.lug.org.uk/mailman/private/bristol/attachments/20150420/e759fdee/attachment-0001.html>
------------------------------
Message: 5
Date: Mon, 20 Apr 2015 09:59:09 +0100
From: Amias Channer <me@amias.net>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] Looking for help writing firmware.
Message-ID:
<CAMgU7XX=vW1UfEwxC7TsT3iEOTomjGBncjBK8t5DpZJxDg=gAQ@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Hello Alex,
You might find more answers to this type of question on the bristol
hackspace list.
Here is their website
http://bristol.hackspace.org.uk/
FWIW i think you might be able to buy an ethernet interface that would do
most of this for you.
This would also take care of updates as well , which as martin said , will
be important.
Cheers
Amias
On 18 April 2015 at 14:16, Alex <sagey13@msn.com> wrote:
> Hello all,
>
>
> I'm new here but was recommended to join as I gather there are some
> talented people here who might be able to assist in my project.
>
>
> The idea is to produce a hardware digital audio processing product that
> doesn't exclude Linux users. Typically, parameters are updated in software
> on the users computer but currently these products are largely Windows only
> with some offering Mac versions. I plan to produce a html page, accessed
> over ethernet connection, which would allow users to enter their
> parameters, regardless of OS.
>
>
> I've been developing the hardware, what I need is someone to create this
> html page and microcontroller code. The DSP tool I use makes it easy to
> generate the DSP code needed for the microcontroller but this page would
> need to modify this based on user input. The page doesn't need to be fancy,
> just functional.
>
>
> As this is a commercial project, money is available.
>
>
> Please do get in touch if you might be able to help, or know someone who
> might, we can this discuss in more detail. Feel free to ask questions.
>
>
> Many thanks,
>
>
> Alex.
>
>
>
>
> _______________________________________________
> Bristol mailing list
> Bristol@mailman.lug.org.uk
> https://mailman.lug.org.uk/mailman/listinfo/bristol
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.lug.org.uk/mailman/private/bristol/attachments/20150420/d5317cc4/attachment-0001.html>
------------------------------
_______________________________________________
Bristol mailing list
Bristol@mailman.lug.org.uk
https://mailman.lug.org.uk/mailman/listinfo/bristol
End of Bristol Digest, Vol 597, Issue 1
***************************************
Tidak ada komentar:
Posting Komentar