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Where's the Debian-ARM forum for rPi?
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Avoi...@gmail.com
Mar 3, 2013, 12:51:31 AM3/3/13
to
I'm favourably impressed by the rPi system, which has chosen Debian as its
default OS. To me, the sound output [from a text-to-speech *.wav that I
created on a full size PC] is amazing. I used to read about 'sound cards',
but never had any. I'm wondering where's the rPi's sound hardware?
Will this forum be handling the rPi?
The web-based forum, promoted by the FB/twitter-kiddies is intolerable:
absurd/multiple sign-ins etc. and mutual-stroking [I think the kiddies call
it social networking] is needed to to get ANY info.
Q: how would one convert to debian from a system that used `pppd` via
a script to connect a fixed-terminal-wireless [I think it's Wimax]?
The old script which connected a serial-port modem was just modified
to use /dev/ttyUSB0, on non-debian systems.
==TIA
default OS. To me, the sound output [from a text-to-speech *.wav that I
created on a full size PC] is amazing. I used to read about 'sound cards',
but never had any. I'm wondering where's the rPi's sound hardware?
Will this forum be handling the rPi?
The web-based forum, promoted by the FB/twitter-kiddies is intolerable:
absurd/multiple sign-ins etc. and mutual-stroking [I think the kiddies call
it social networking] is needed to to get ANY info.
Q: how would one convert to debian from a system that used `pppd` via
a script to connect a fixed-terminal-wireless [I think it's Wimax]?
The old script which connected a serial-port modem was just modified
to use /dev/ttyUSB0, on non-debian systems.
==TIA
Message has been deleted
Avoi...@gmail.com
Mar 3, 2013, 8:21:05 AM3/3/13
to
In article <20130303100235....@firedrake.org>, Roger Burton West <roger+ao...@nospam.firedrake.org> wrote:
> On 2013-03-03, Avoi...@gmail.com wrote:
> >I used to read about 'sound cards',
> >but never had any. I'm wondering where's the rPi's sound hardware?
>
> It's part of the BCM2835 SoC. See
> http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf
> for more details.
>
Thanks.
> USB modem?
Probably, but I don't know how USB modems work.
The fixed-wireless-phone just works OK with my script from the 90s
which calls `pppd`; where I've replaced tty0 with ttyUSB0.
The computor doesn't need to know about wireless.
It's just that rPi hasn't got any *ppp*, and I'm wondering how
users, who don't use the ETH, connect to inet.
> I believe Linux has a wimax driver. Perhaps
> http://lxr.free-electrons.com/source/Documentation/wimax/README.wimax
> might be a good starting point.
> On 2013-03-03, Avoi...@gmail.com wrote:
> >I used to read about 'sound cards',
> >but never had any. I'm wondering where's the rPi's sound hardware?
>
> http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf
> for more details.
>
Thanks.
> >Will this forum be handling the rPi?
>
> To the extent that it runs Debian, why not?
>
>
> >Q: how would one convert to debian from a system that used `pppd` via
> > a script to connect a fixed-terminal-wireless [I think it's Wimax]?
> > The old script which connected a serial-port modem was just modified
> > to use /dev/ttyUSB0, on non-debian systems.
>
> How does this wireless system present itself at the hardware level?
> >Q: how would one convert to debian from a system that used `pppd` via
> > a script to connect a fixed-terminal-wireless [I think it's Wimax]?
> > The old script which connected a serial-port modem was just modified
> > to use /dev/ttyUSB0, on non-debian systems.
>
> USB modem?
Probably, but I don't know how USB modems work.
The fixed-wireless-phone just works OK with my script from the 90s
which calls `pppd`; where I've replaced tty0 with ttyUSB0.
The computor doesn't need to know about wireless.
It's just that rPi hasn't got any *ppp*, and I'm wondering how
users, who don't use the ETH, connect to inet.
> I believe Linux has a wimax driver. Perhaps
> http://lxr.free-electrons.com/source/Documentation/wimax/README.wimax
> might be a good starting point.
Message has been deleted
John Hasler
Mar 3, 2013, 8:51:58 AM3/3/13
to
Roger writes:
> (in which case: poke at the kernel until you get a /dev/ttyUSB* that
> reacts like your modem; then apt-get install ppp as on any other
> Debian box.)
Or install pppconfig and let it do the poking for you.
--
John Hasler
> (in which case: poke at the kernel until you get a /dev/ttyUSB* that
> reacts like your modem; then apt-get install ppp as on any other
> Debian box.)
Or install pppconfig and let it do the poking for you.
--
John Hasler
J G Miller
Mar 3, 2013, 9:19:27 AM3/3/13
to
On Sunday, March 3rd, 2013, at 05:51:31j +0000, Chrus Glurr asked:
> Q: how would one convert to debian from a system that used `pppd` via
> a script to connect a fixed-terminal-wireless [I think it's Wimax]?
> The old script which connected a serial-port modem was just modified
> to use /dev/ttyUSB0, on non-debian systems.
Talk to Afrihost about a DSL subscription.
<http://www.afrihost.COM/site/product/adsl_lines>
Up to 1 Mbps from R149 (VAT inclusive) per month.
Compare that to how much you are spending per month on dial up charges.
> Q: how would one convert to debian from a system that used `pppd` via
> a script to connect a fixed-terminal-wireless [I think it's Wimax]?
> The old script which connected a serial-port modem was just modified
> to use /dev/ttyUSB0, on non-debian systems.
<http://www.afrihost.COM/site/product/adsl_lines>
Up to 1 Mbps from R149 (VAT inclusive) per month.
Compare that to how much you are spending per month on dial up charges.
John F. Morse
Mar 3, 2013, 3:13:34 PM3/3/13
to
On 03/03/2013 07:33 AM, Roger Burton West wrote:
> On 2013-03-03, Avoi...@gmail.com wrote:
>> Probably, but I don't know how USB modems work.
> The more information you give, the more help people can be. Start by
> On 2013-03-03, Avoi...@gmail.com wrote:
>> Probably, but I don't know how USB modems work.
> describing the hardware interfaces and go on from there.
>
>> The fixed-wireless-phone just works OK with my script from the 90s
>> which calls `pppd`; where I've replaced tty0 with ttyUSB0.
>> The computor doesn't need to know about wireless.
>> It's just that rPi hasn't got any *ppp*, and I'm wondering how
>> users, who don't use the ETH, connect to inet.
> So are you saying:
>> The fixed-wireless-phone just works OK with my script from the 90s
>> which calls `pppd`; where I've replaced tty0 with ttyUSB0.
>> The computor doesn't need to know about wireless.
>> It's just that rPi hasn't got any *ppp*, and I'm wondering how
>> users, who don't use the ETH, connect to inet.
>
> - you need serial drivers for a USB port, and want to run PPP on that?
>
> (in which case: poke at the kernel until you get a /dev/ttyUSB* that
> reacts like your modem; then apt-get install ppp as on any other
> Debian box.)
>
> - you need an actual hardware serial port?
> (in which case: poke at the kernel until you get a /dev/ttyUSB* that
> reacts like your modem; then apt-get install ppp as on any other
> Debian box.)
>
>
> (in which case: no idea, I don't do serial hardware any more, but I
> believe there are USB devices to get the job done.)
What does the S in USB stand for?
http://en.wikipedia.org/wiki/USB
So it seems USB is an "actual serial port" eh.
--
John
When a person has -- whether they knew it or not -- already
rejected the Truth, by what means do they discern a lie?
Joe
Mar 3, 2013, 4:33:43 PM3/3/13
to
On Sun, 03 Mar 2013 14:13:34 -0600
"John F. Morse" <jo...@example.invalid> wrote:
> On 03/03/2013 07:33 AM, Roger Burton West wrote:
> > - you need an actual hardware serial port?
> >
> > (in which case: no idea, I don't do serial hardware any more, but
> > I believe there are USB devices to get the job done.)
>
> What does the S in USB stand for?
>
> http://en.wikipedia.org/wiki/USB
>
> So it seems USB is an "actual serial port" eh.
>
Maybe so, but it's very complex, practically a networking protocol,
"John F. Morse" <jo...@example.invalid> wrote:
> On 03/03/2013 07:33 AM, Roger Burton West wrote:
> > - you need an actual hardware serial port?
> >
> > (in which case: no idea, I don't do serial hardware any more, but
> > I believe there are USB devices to get the job done.)
>
> What does the S in USB stand for?
>
> http://en.wikipedia.org/wiki/USB
>
> So it seems USB is an "actual serial port" eh.
>
and it has almost nothing in common with what is usually called 'RS-232'
serial.
You can 'bit-bang' old-type serial out of a microprocessor port,
there's no way on Earth you can do that with USB. [Before anyone
mentions it, I do know you can buy USB-capable microprocessors. But
that isn't bit-banging, you can't code it yourself in assembler].
--
Joe
John F. Morse
Mar 3, 2013, 5:29:50 PM3/3/13
to
Joe
Mar 4, 2013, 3:51:17 AM3/4/13
to
On Sun, 03 Mar 2013 16:29:50 -0600
often. If you dig deeper you'll find there are only two companies
really prominent in making the USB-old-serial ICs, though Microchip, at
least, makes microcontrollers with both USB and UART functions. You can
hide a lot of complexity in a single IC. A Microchip controller is just
one of thousands of ICs which would make an early mainframe look pretty
feeble.
Or you could just read the Wiki page you quoted, particularly the
'System Design' section. A networking protocol, as I said.
Old serial is point-to-point and just pokes seven or eight data bits
out of its port and leaves the other end to deal with it as it will.
The bit rates are also somewhat different: the highest 'old' rate
normally encountered is 115,200 baud (symbols/sec) whereas USB is
commonly available at 400Mb/s, with a current theoretical maximum of
about 5Gb/s for USB 3.0. Completely different beasts, as they are both
completely different to the hundreds or thousands of other serial
protocols in use.
--
Joe
"John F. Morse" <jo...@example.invalid> wrote:
> On 03/03/2013 03:33 PM, Joe wrote:
> > On Sun, 03 Mar 2013 14:13:34 -0600
> > "John F. Morse" <jo...@example.invalid> wrote:
> >
> >> On 03/03/2013 07:33 AM, Roger Burton West wrote:
> >>> - you need an actual hardware serial port?
> >>>
> >>> (in which case: no idea, I don't do serial hardware any more,
> >>> but I believe there are USB devices to get the job done.)
> >> What does the S in USB stand for?
> >>
> >> http://en.wikipedia.org/wiki/USB
> >>
> >> So it seems USB is an "actual serial port" eh.
> >>
> > Maybe so, but it's very complex, practically a networking protocol,
> > and it has almost nothing in common with what is usually called
> > 'RS-232' serial.
> >
> > You can 'bit-bang' old-type serial out of a microprocessor port,
> > there's no way on Earth you can do that with USB. [Before anyone
> > mentions it, I do know you can buy USB-capable microprocessors. But
> > that isn't bit-banging, you can't code it yourself in assembler].
>
>
> Doesn't look very complex.
>
> http://www.staples.com/Staples-USB-to-Serial-Adapter/product_837560
>
> http://www.amazon.com/TRENDnet-RS-232-Serial-Converter-TU-S9/dp/B0007T27H8
>
> http://www.ehow.com/how_5057290_convert-serial-usb.html
>
>
Yes, I have two of them myself. I *do* work with 'old serial' quite
> On 03/03/2013 03:33 PM, Joe wrote:
> > On Sun, 03 Mar 2013 14:13:34 -0600
> > "John F. Morse" <jo...@example.invalid> wrote:
> >
> >> On 03/03/2013 07:33 AM, Roger Burton West wrote:
> >>> - you need an actual hardware serial port?
> >>>
> >>> (in which case: no idea, I don't do serial hardware any more,
> >>> but I believe there are USB devices to get the job done.)
> >> What does the S in USB stand for?
> >>
> >> http://en.wikipedia.org/wiki/USB
> >>
> >> So it seems USB is an "actual serial port" eh.
> >>
> > Maybe so, but it's very complex, practically a networking protocol,
> > and it has almost nothing in common with what is usually called
> > 'RS-232' serial.
> >
> > You can 'bit-bang' old-type serial out of a microprocessor port,
> > there's no way on Earth you can do that with USB. [Before anyone
> > mentions it, I do know you can buy USB-capable microprocessors. But
> > that isn't bit-banging, you can't code it yourself in assembler].
>
>
> Doesn't look very complex.
>
> http://www.staples.com/Staples-USB-to-Serial-Adapter/product_837560
>
> http://www.amazon.com/TRENDnet-RS-232-Serial-Converter-TU-S9/dp/B0007T27H8
>
> http://www.ehow.com/how_5057290_convert-serial-usb.html
>
>
often. If you dig deeper you'll find there are only two companies
really prominent in making the USB-old-serial ICs, though Microchip, at
least, makes microcontrollers with both USB and UART functions. You can
hide a lot of complexity in a single IC. A Microchip controller is just
one of thousands of ICs which would make an early mainframe look pretty
feeble.
Or you could just read the Wiki page you quoted, particularly the
'System Design' section. A networking protocol, as I said.
Old serial is point-to-point and just pokes seven or eight data bits
out of its port and leaves the other end to deal with it as it will.
The bit rates are also somewhat different: the highest 'old' rate
normally encountered is 115,200 baud (symbols/sec) whereas USB is
commonly available at 400Mb/s, with a current theoretical maximum of
about 5Gb/s for USB 3.0. Completely different beasts, as they are both
completely different to the hundreds or thousands of other serial
protocols in use.
--
Joe
Unknown
Mar 4, 2013, 7:43:55 AM3/4/13
to
On Sun, 03 Mar 2013 10:09:06 +0000, Roger Burton West wrote:
> On 2013-03-03, Avoi...@gmail.com wrote:
>
> On 2013-03-03, Avoi...@gmail.com wrote:
>
>>Will this forum be handling the rPi?
>
>
> To the extent that it runs Debian, why not?
>
Well the following replies have all lost-the-thead and are thinking about
>
their old WinTel-box experiences. rPi users who are restricted to ONE
USB port, after the other has been allocated to their keybrd would KNOW
what I'm asking about.
>>Q: how would one convert to debian from a system that used `pppd` via
>> a script to connect a fixed-terminal-wireless [I think it's Wimax]?
>> The old script which connected a serial-port modem was just modified
>> to use /dev/ttyUSB0, on non-debian systems.
>
> How does this wireless system present itself at the hardware level? USB
> modem? I believe Linux has a wimax driver. Perhaps
> http://lxr.free-electrons.com/source/Documentation/wimax/README.wimax
> might be a good starting point.
"USB modem" could theoretically mean a great many different things.
> might be a good starting point.
But today it would mean what ever the WinTel marketers have associated
with the buzz-phrase. A pamphlet here reads: "<mobile network/not
mine=fixed> needs an HSPA+UMTS 900MHz device". I half wanted to buy a
"USB-modem" with data allocation from the Network, as a spare wheel, for
when the fixed-wireless facility dies. Their email died last year.
---
In this failed-state-location where few people can read/write, it's a
problem unless you <buy what wallmart is selling this week>.
Since my script settings only needed changing /tty0 to /ttyUSB0, I'm
guessing that the new fixed wireless also 'talks HAYES'?
Perhaps the new "USB-modems" are completly different.
AFAIK they've sold 1 million rPis so there ARE people who know.
The problem is that the FB/twitter-kiddies don't/can't use USEnet.
Message has been deleted
Unknown
Mar 4, 2013, 3:45:57 PM3/4/13
to
On Sun, 03 Mar 2013 13:33:10 +0000, Roger Burton West wrote:
> On 2013-03-03, Avoi...@gmail.com wrote:
>>Probably, but I don't know how USB modems work.
>
> On 2013-03-03, Avoi...@gmail.com wrote:
>>Probably, but I don't know how USB modems work.
>
> The more information you give, the more help people can be. Start by
> describing the hardware interfaces and go on from there.
>
I'm assuming that readers KNOW the rPi: the size of 20-cig-packet, with
> describing the hardware interfaces and go on from there.
>
only 2 USBs, and one needed for the keybrd.
>>The fixed-wireless-phone just works OK with my script from the 90s which
>>calls `pppd`; where I've replaced tty0 with ttyUSB0. The computor
>>doesn't need to know about wireless. It's just that rPi hasn't got any
>>*ppp*, and I'm wondering how users, who don't use the ETH, connect to
>>inet.
>
> So are you saying:
>
> - you need serial drivers for a USB port, and want to run PPP on that?
>
> (in which case: poke at the kernel until you get a /dev/ttyUSB* that
> reacts like your modem; then apt-get install ppp as on any other
> Debian box.)
>
Since the default installed wheezy has got a [mini] browser [in X], I
>
> - you need serial drivers for a USB port, and want to run PPP on that?
>
> (in which case: poke at the kernel until you get a /dev/ttyUSB* that
> reacts like your modem; then apt-get install ppp as on any other
> Debian box.)
>
was wondering what <fetcher> they use. And `locate ppp` is empty.
I don't want to start doing my own RESEARCH, when there are another
million users, who already know.
Are these usb-moden-sticks HAYES compatible?
My USB connected fixed-wireless-phone is.
Message has been deleted
Wolfgang Weisselberg
Mar 9, 2013, 4:32:57 PM3/9/13
to
Unknown <d...@gmail.com> wrote:
> I'm assuming that readers KNOW the rPi: the size of 20-cig-packet, with
> only 2 USBs, and one needed for the keybrd.
There has been an amazing invention lately ... the USB hub!
> I'm assuming that readers KNOW the rPi: the size of 20-cig-packet, with
> only 2 USBs, and one needed for the keybrd.
Now available in the powered version.
-Wolfgang
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