[App_rpt-users] USB Adapter has no EEPROM installed

Steven Donegan donegan at donegan.org
Mon Nov 2 09:09:14 EST 2015


Since this generated a bunch of discussion I just went ahead and designed and ordered PCB's with Male/Female DB25's and a socket for the 93C46 family of EEPROM.So if someone wants one when they arrive (2-3 weeks) let me know :-) IMHO a lot cleaner than soldering an EEPROM directly inside a DB25 cable shell...
 Steven Donegan
KK6IVC General Class FCC License
Silver State Car #86
www.sscc.us
      From: Jim Duuuude <telesistant at hotmail.com>
 To: Steven Donegan <donegan at donegan.org>; Steve Zingman <szingman at msgstor.com>; Bryan Fields <bryan at bryanfields.net>; app_rpt mailing list <app_rpt-users at ohnosec.org> 
 Sent: Sunday, November 1, 2015 8:52 PM
 Subject: RE: [App_rpt-users] USB Adapter has no EEPROM installed
   
#yiv1482702664 #yiv1482702664 --.yiv1482702664hmmessage P{margin:0px;padding:0px;}#yiv1482702664 body.yiv1482702664hmmessage{font-size:12pt;font-family:Calibri;}#yiv1482702664 Again, the reason the EEPROM is not installed by default is that it REALLY should
be in the connector, so the parameters are tied to the radio/cable, not the URI (to allow
field-replaceability, etc).

Date: Mon, 2 Nov 2015 03:28:52 +0000
From: donegan at donegan.org
To: szingman at msgstor.com; Bryan at bryanfields.net; app_rpt-users at ohnosec.org
Subject: Re: [App_rpt-users] USB Adapter has no EEPROM installed



Ahh, I see the real problem - there is no unique serial number (or anything else) between URI-X's. So doing the udev.conf thing doesn't look like it will work as there is nothing unique in dmesg to lock it to...
Sounds like DMK should put a minimal EEPROM in and assign unique serial numbers - if that is a 10$ upgrade for those with multiple URI's it sounds like a decent deal.
I will check my sound fobs next...
 Steven Donegan
KK6IVC General Class FCC License
Silver State Car #86
www.sscc.us
      From: Steven Donegan <donegan at donegan.org>
 To: Steve Zingman <szingman at msgstor.com>; Bryan Fields <Bryan at bryanfields.net>; APP RPT <app_rpt-users at ohnosec.org> 
 Sent: Sunday, November 1, 2015 7:08 PM
 Subject: Re: [App_rpt-users] USB Adapter has no EEPROM installed
   
I have 5 USB fobs to play with and I know the udev rule tango - I'll see if there is something that lets you lock it down regardless of order. That is the case with WiFi, serial and Ethernet dongles I have worked with in the past so I see no reason (yet) why USB audio devices would be any different...
 Steven Donegan
KK6IVC General Class FCC License
Silver State Car #86
www.sscc.us
 

     From: Steve Zingman <szingman at msgstor.com>
 To: Bryan Fields <Bryan at bryanfields.net>; APP RPT <app_rpt-users at ohnosec.org> 
 Sent: Sunday, November 1, 2015 4:59 PM
 Subject: Re: [App_rpt-users] USB Adapter has no EEPROM installed
   
We should be able to control that with a udev rule.

Steve

On 11/01/2015 07:57 PM, Bryan Fields wrote:
> On 11/1/15 6:43 PM, REDBUTTON_CTRL wrote:
>> I have done this with many nodes with multiple nodes and it works all
>> the time. If you dont do this when setting up the nodes the URIs will
>> get jumbled up as its a crap shoot at boot up when the sw will detect
>> the usb devices.
> That was not the case with this box.  It did indeed randomly choose what
> device to init first.
>
> anyways, eeprom is worth the 10 bux.

-- 
"Anything is possible if you don't know what you are talking about."
1st Law of Logic



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