[App_rpt-users] NON- C-media Sound card and Pi GPIO

Mike mm at midnighteng.com
Mon Apr 22 01:21:57 UTC 2019 

-NO-

They can not be bit-banged on linux.  Even on a PC. And I know that may 
not make sense as it did not to me a long time ago when I tried it 
insisting that it would, but it is true.


...mike/kb8jnm

On 4/21/2019 9:07 PM, Pierre Martel wrote:
> https://www.newegg.com/Product/Product.aspx?Item=N82E16812200160&Description=usb%20parallel%20port&cm_re=usb_parallel_port-_-12-200-160-_-Product
>
> could this be used on a raspberry pi?
>
>
>
> Le dim. 21 avr. 2019 à 19:09, Mike <mm at midnighteng.com 
> <mailto:mm at midnighteng.com>> a écrit :
>
>     Sure would be great... you working on it ?
>
>     You have plenty of i/o options with a parallel port. Built-in to
>     app_rpt as one of it's standards. Been there a very long time.
>     Changed a little bit about 10 years ago.
>
>     And you can test logic outputs via commands. No need to re-invent
>     the wheel for little benefit.
>
>     if you want  those avenues on the small, low power and cheap,
>
>     I would suggest as I did before in this mail list over 4 years ago
>     when everyone was headed to the Pi and BBB and give a Intel board
>     a try.
>
>     D2700MUD mini-itx  Intel ATOM
>
>     fanless 2.13mhz up to 4gb ram and has parallel port that can make
>     all your cos/ptt for 4 nodes, no problem without hacking your usb
>     dongle.
>
>     Simply use the parallel port for all your switching logic (needs
>     buffered).  I put the needed pp info in the wiki but it may need
>     some additional to be complete. Enough there to make it work. You
>     have 4 inputs and 8 outputs as declared in app_rpt.
>
>     find a used one on ebay... this one $25 add a 12v itx power supply
>     if you need that. You will need to buy ram.
>
>     https://www.ebay.com/itm/Intel-D2700MUD-Motherboard-G32419-504-With-Intel-Atom-D2700-2-13GHz-CPU/153419665430?hash=item23b8865016:g:4rwAAOSw0KdcjtKr
>
>     Been using them for many years. Going to make my 5yr old spare a
>     radioless mobile with a touch screen after failing to cram all the
>     junk I wish to use into a pi. Just have not got around to it yet.
>     Wrong time of year to get started on it as well. Going to control
>     things in and on the car as well. Perhaps when I am seeking air
>     conditioning.... LOL
>
>     If that can't solve your i/o issues, you are going to have to go
>     out on your own or hope/wait till someone else does. But this
>     changes often enough that I don't like to sink that much time into
>     it anymore. Only for what I want to do. The next unknown changes
>     can make all of your work wasted or a constant battle to re-work.
>
>
>     ...mike/kb8jnm
>
>
>     On 4/19/2019 10:24 AM, William Franzin wrote:
>>     Would be great if there was a standard virtual device that could
>>     be connected to different physical radio interfaces.
>>
>>     /dev/radio0/ptt
>>     /dev/radio0/cos
>>     /dev/radio0/ctcss
>>     & other signals
>>
>>     Then anyone building software could support /dev/radio and it
>>     would provide audio in/out and various signals
>>
>>     Testing would be simplified too, could just cat /dev/radio0/cos
>>     to check for signal or echo 1 > /dev/radio0/ptt.
>>
>>     William
>>
>>     On Thu., Apr. 18, 2019, 11:42 p.m. George Csahanin,
>>     <george at dyb.com <mailto:george at dyb.com>> wrote:
>>
>>         Steve that looks like exactly what I was fishing for. But how to
>>         integrate? I can easily drop the source file into the channels/
>>         directory and compile but how to make them and use them. I
>>         saw the
>>         Aussie web site this may have come from but cannot download
>>         from them
>>         (non-VK callsign).
>>
>>         On 4/17/2019 8:56 AM, Steve Zingman wrote:
>>         > 2 years ago, Stacy, KG7QIN forked a repo I created with a
>>         number of
>>         > GPIO enabled channel drivers including a modification to
>>         USBRadio and
>>         > SimpleUSB to add RPi GPIO support.
>>         > <https://github.com/KG7QIN/ASL_GPIO>
>>         >
>>         > Steve N4IRS
>>         >
>>
>>         ---
>>         This email has been checked for viruses by AVG.
>>         https://www.avg.com
>>
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