If you look at this close, it is just a glorified op-amp. We used a 741 for dsp on a serial line in the 90's. What makes it tough is the I/O lines some use for PTT/COS. and the address lines for them that may not be the same with other units. Could just change the source code for some others. I suggest finding a way to replace the I/O lines with something else because ANY dsp should work fine for the audio. I think the PI itself has them. Just have to write the code to replace it OR use "ON-EVENT" programming to read/write to them to follow ptt/cos. I know that is easy for me to say as I'm using Atom boards with a parallel port. And there are plenty of I/O / DAQ boards out there that can be utilized for plenty of I/O if the PI's I/O can't work for it. Just remember, it was the work of others that made it so easy so far. But a good thing never lasts forever. ...mike/kb8jnm
drivers? hardware? integration with existing codebase? takes time and (unpaid) effort.
-- Bryan Sent from my iPhone 6S...No electrons were harmed in the sending of this message.
On Jul 5, 2016, at 20:54, Steven Donegan <donegan@donegan.org> wrote:
I would ask a different question - why do we still use slow USB devices rather than ones directly attached to the Pi's bus?
Steven Donegan KK6IVC General Class FCC License FAA PP-ASEL Pilots License Silver State Car #86 www.sscc.us
From: David McGough <kb4fxc@inttek.net> To: app_rpt mailing list <app_rpt-users@ohnosec.org> Sent: Tuesday, July 5, 2016 5:40 PM Subject: Re: [App_rpt-users] usbfobs
Steve,
The CM108/CM119 is nowhere near dead! Even if CM stops manufacture, there will be decent "clones" of it for years to come. No worries about that!
If you're needing some FOBs, I understand the shipping issues you've got, being in NZ. I just checked the US Postal Service shipping site and a "First Class Mail International Large Envelope" is under $20USD for 2 lbs., shipped from the USA to NZ. Priority mail, where you could ship a small box in under a week, starts at about $64USD. See:
https://ircalc.usps.com/?country=10324
Why not just work a "bulk quantity" deal with Kevin or Scott to sell you and ship you a hand full of their RIM-lite adapters??? Then, you'll in good shape for now.
http://www.repeater-builder.com/products/usb-rim-lite.html
73, David KB4FXC
On Wed, 6 Jul 2016, Steve Wright wrote:
On 06/07/16 11:44, Kevin Custer wrote:
Soldering a 48 pin LQFP and having it be fake is nothing short of a bad experience. Like Scott, I recently purchased a fair quantity of CM119A's from a top CM distributor. They told us the CM119 and CM119A are now legacy products and the CM119B is current. Unfortunately, the B model doesn't use a crystal and several developers agree that they may not be suitable for digital and analog radio adapter applications. There were still a few hundred CM119A's in the distribution chain as of a few months ago.
If the CM119 is dead, then we should scrap it. I can't really see why we are focussing on that devices' built-in I/O, when we have computing devices such as RPI3 with scads of easily accessible I/O.
Linux sound is really well developed - "just works everywhere" I'd say. Why not build or reuse a DSP-based driver for that, that will handle voting - now we are in business with all the toys, for the foreseeable future. Likely a simple CLI config tool could be developed too - choose RX audio device, TX audio device, signalling, save settings, done. Rinse and repeat for three devices.
Hardware VOTERs are fine for a single repeater with a few outboard receivers, but way too much money for non-millionaire clubs to convert "everything" to asterisk - they will stick with their IRLP node for sure, and that is a tragedy.. I see a few members here and elsewhere make it their business to put tens of thousands of $$ into communication systems, and that's enviable and laudable, but 90% of constructors don't exist on that rarefied plane.
S
_______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button" You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
_______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button" You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
_______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button" You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button" You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.