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Re: Second I2C bus

Posted: Mon Jul 14, 2014 3:42 pm
by PiGraham
Richard-TX wrote:And that is precisely my point. Significantly change what is supported (an entire I2C bus) isn't an upgrade. Some would consider it a downgrade. Others might consider it a different device altogether. Sure, I could use I2C-0 for whatever I wanted, but the very second I do, I lose all official support. ("We told you not to use it.")
Was using both i2c) and 1 ever officially supported? Hasn't it been reserved for CSI / DSI since Rev2? I'm not clear, but that seems to be what has been suggested above.

If so then you may be not much worse off. Hopefully there will be an option to disable eeprom probe and a bare B+ with no eeprom carrying add-on and no camera or display will leave i2c0 free for your expansion.

Maybe?

Re: Cost over $50 at Newark

Posted: Mon Jul 14, 2014 3:45 pm
by mikronauts
canada.newark.com:
Manufacturer: RASPBERRY-PI
Mfg Part No: RASPBERRY-MODB+-512M
Price: $56.77
(Price is before tax)

Availability: Out of Stock
The model B, when in stock (it is not in stock now) I think was $38.52 last time I checked.

That's one heck of an unjustified markup!

The foundation should get on their case.
klricks wrote:Cost?
Newark / Element 14 has the B+ listed for 50.59 USD. The description says $35.00 but the higher price is shown on checkout cart.
Is this just a pre-order price that will go down to $35 in the near future after the rush?

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 3:49 pm
by Antiklesys
I remember the old model B (at least the old old 256Mb ram one) had an issue with the Ethernet/USB controller which caused loads of threads of complaints on this forum.
Does the B+ use the same chip or has this changed to a better and bug-free one?

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 3:50 pm
by fruitoftheloom
Is it possible to block all postings which mention:

want more RAM
want Dual-Core
want SATA Port
want VGA Port

:twisted: :twisted: :twisted: :twisted: :twisted: :twisted: :twisted:

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 3:53 pm
by Pi_Fanatic
As I said most 3.5mm Audio cables will work. What you have to watch is the Audio / Video cables. Off the shelf cables may work except that you may have to plug the Yellow connector into that audio port and the Red or White connector into the video port.

Pi_Fanatic

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 3:53 pm
by pluggy
What we need now is an A+ with switching regulators for the real battery fiends.

James - your very favourite Pi hater has just bought another (b+ obviously) . ;)

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 3:54 pm
by fruitoftheloom
Antiklesys wrote:I remember the old model B (at least the old old 256Mb ram one) had an issue with the Ethernet/USB controller which caused loads of threads of complaints on this forum.
Does the B+ use the same chip or has this changed to a better and bug-free one?
It was a re-write of the software which cured the various ills, and yes the USB to USB /Ethernet Chipset is the same except for the 2 extra USB Connectors:

was http://www.microchip.com/wwwproducts/De ... ct=LAN9512

now http://www.microchip.com/wwwproducts/De ... ct=LAN9514

The USB thread is here http://www.raspberrypi.org/forums/viewt ... =usb+redux

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 3:55 pm
by RaTTuS
Antiklesys wrote:I remember the old model B (at least the old old 256Mb ram one) had an issue with the Ethernet/USB controller which caused loads of threads of complaints on this forum.
Does the B+ use the same chip or has this changed to a better and bug-free one?
it uses the pin compatible Lan9514 [the Lan9512 was in the Model B]
there are no [very very few ?] issues with USB / Ethernet
power for USB has been an issue in the past [not that I've seen it ] but this should be fixed in the B+

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 3:59 pm
by Pi_Fanatic
Antiklesys wrote:I remember the old model B (at least the old old 256Mb ram one) had an issue with the Ethernet/USB controller which caused loads of threads of complaints on this forum.
Does the B+ use the same chip or has this changed to a better and bug-free one?
The USB controller has been updated to the http//www.microchip.com/products/Devices.aspx?product=LAN9514 - MicroChip 9514 from the 9512.

Pi_Fanatic

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 4:01 pm
by tvoverbeek
No USB backpowering on B+
As has been mentioned several times it will not be possible to power the B+ using USB back-power.
My guess it this is because of the AP2331W which provides better USB hot plugging support.
The AP2331W also blocks back-current and I am assuming the H5V goes from the AP2331W to the four USB ports.
Hence no back-powering.
See also the Adafruit explanation https://learn.adafruit.com/introducing- ... wer-supply
Is this explanation correct?

I ususally backpower my Bs when using the Motorola Lapdock. For the B+ I will need an extra power lead.
Not really a problem, especially since now the B+ provides better protection against faulty back-powering.

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 4:05 pm
by fruitoftheloom
Pi_Fanatic wrote:
Antiklesys wrote:I remember the old model B (at least the old old 256Mb ram one) had an issue with the Ethernet/USB controller which caused loads of threads of complaints on this forum.
Does the B+ use the same chip or has this changed to a better and bug-free one?
The USB controller has been updated to the http//www.microchip.com/products/Devices.aspx?product=LAN9514 - MicroChip 9514 from the 9512.

Pi_Fanatic
Is there an ECHO in here ? :evil:

http://www.raspberrypi.org/forums/viewt ... 20#p578014

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 4:12 pm
by RaTTuS
pluggy wrote:What we need now is an A+ with switching regulators for the real battery fiends.

James - your very favourite Pi hater has just bought another (b+ obviously) . ;)
the A+ is coming.... Eban has said so ..
http://www.raspi.today/podcast-episode-6/

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 4:19 pm
by Alexander Brown
Pi P with better ability to run of batteries might sell...

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 4:28 pm
by pluggy
RaTTuS wrote:
pluggy wrote:What we need now is an A+ with switching regulators for the real battery fiends.

James - your very favourite Pi hater has just bought another (b+ obviously) . ;)
the A+ is coming.... Eban has said so ..
http://www.raspi.today/podcast-episode-6/
Thanks for that, but Eban has hinted at 2 USB ports, my understanding is that that would require a LAN chip which would be counter productive on an A I think.

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 4:31 pm
by Heater
Richard-Tx,
If you guys are bored, why not come up with a SBC that uses the ARMv8-A processor running at 3 Ghz?
Food for thought.
It's the same food for thought that has been regurgitated here many times. It's a pointless idea. Such an SBC would be a total redesign, for which the resources are not available I guess. It would not be totally backward compatible so it's uptake among the two million and growing Pi users would be limited. It would require a whole new OS to be supported. Not to mention all the documentation. It would cause endless confusion among "Pi" users. It would end up just being in competition with the Cubie boards and many others and it would not succeed.
Backwards compatibility, a single "Pi" standard and the longevity of the platform is very valuable to everyone. A whole new design is not, there are already a bunch to choose from if you so wish.

Re: Second I2C bus

Posted: Mon Jul 14, 2014 4:32 pm
by Richard-TX
PiGraham wrote:
Richard-TX wrote:And that is precisely my point. Significantly change what is supported (an entire I2C bus) isn't an upgrade. Some would consider it a downgrade. Others might consider it a different device altogether. Sure, I could use I2C-0 for whatever I wanted, but the very second I do, I lose all official support. ("We told you not to use it.")
Was using both i2c) and 1 ever officially supported? Hasn't it been reserved for CSI / DSI since Rev2? I'm not clear, but that seems to be what has been suggested above.

If so then you may be not much worse off. Hopefully there will be an option to disable eeprom probe and a bare B+ with no eeprom carrying add-on and no camera or display will leave i2c0 free for your expansion.

Maybe?
I suspect that while the current statement of "Do not use" exists, the ability to field modify future kernels will continue else the statement "Open Source" would not be true.

Having said that, eeproms have a predefined I2C address range. (See the document at https://www.diolan.com/downloads/i2c-ad ... -table.pdf ) As such only a small range of addresses should be probed at boot. As with most things, there should be a "magic" header stored on the eeprom so that only a valid code would be loaded.

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 4:37 pm
by gkreidl
I think 99% of all RPi users will be happy with the new design, but this whole thread is cluttered by postings of a few people whining about small and very special details. Back to the topic, please.

Re: Cost over $50 at Newark

Posted: Mon Jul 14, 2014 4:44 pm
by klricks
RaTTuS wrote:
klricks wrote:Cost?
Newark / Element 14 has the B+ listed for 50.59 USD. The description says $35.00 but the higher price is shown on checkout cart.
Is this just a pre-order price that will go down to $35 in the near future after the rush?
the price is and always was $35 + local taxes and shipping...
now what is the reported price of the standard model B ....

see
http://www.newark.com/raspberry-pi-acce ... RR-Rasp-Pi
The price is correct now. This morning they showed no stock @ $50.59 now 3000+ stock @ $35.00

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 4:47 pm
by Heater
It's pretty much impossible to change anything without breaking something for someone somewhere. Ask Microsoft, the masters of backward compatibility.

I think the changes made to create the B+ are minimally intrusive whilst offering great benefits to many.

It's a very elegant rearrangement with some very practical improvements. I love it.

If only we could get the PCB in red :)

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 4:52 pm
by Alexander Brown
Heater wrote:It's pretty much impossible to change anything without breaking something for someone somewhere. Ask Microsoft, the masters of backward compatibility.

I think the changes made to create the B+ are minimally intrusive whilst offering great benefits to many.

It's a very elegant rearrangement with some very practical improvements. I love it.

If only we could get the PCB in red :)
Book a flight to China.

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 4:54 pm
by PiGraham
gkreidl wrote:I think 99% of all RPi users will be happy with the new design, but this whole thread is cluttered by postings of a few people whining about small and very special details. Back to the topic, please.
This is the "The Raspberry Pi Model B+ Q&A thread", not the congratulations thread.
People are posting Q in the hope of getting As. The A's are mostly good/reasonable.
It is perfectly valid to ask whether add-ons or features are still viable on the new board.
'Whining' about people posting on-topic is not very constructive.

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 4:56 pm
by Alexander Brown
PiGraham wrote:
gkreidl wrote:I think 99% of all RPi users will be happy with the new design, but this whole thread is cluttered by postings of a few people whining about small and very special details. Back to the topic, please.
This is the "The Raspberry Pi Model B+ Q&A thread", not the congratulations thread.
People are posting Q in the hope of getting As. The A's are mostly good/reasonable.
It is perfectly valid to ask whether add-ons or features are still viable on the new board.
'Whining' about people posting on-topic is not very constructive.
Also it invites other people to go off topic.

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 5:00 pm
by Alexander Brown
Alexander Brown wrote:
PiGraham wrote:
gkreidl wrote:I think 99% of all RPi users will be happy with the new design, but this whole thread is cluttered by postings of a few people whining about small and very special details. Back to the topic, please.
This is the "The Raspberry Pi Model B+ Q&A thread", not the congratulations thread.
People are posting Q in the hope of getting As. The A's are mostly good/reasonable.
It is perfectly valid to ask whether add-ons or features are still viable on the new board.
'Whining' about people posting on-topic is not very constructive.
Also it invites other people to go off topic.
Speaking of witch is their any change that any of the pi versions might come as a do-it-yourself kit you can build your self

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 5:03 pm
by Alexander Brown
I mean chance (predicted text strikes again...)

Re: The Raspberry Pi Model B+ Q&A thread

Posted: Mon Jul 14, 2014 5:05 pm
by gkreidl
PiGraham wrote: This is the "The Raspberry Pi Model B+ Q&A thread", not the congratulations thread.
People are posting Q in the hope of getting As. The A's are mostly good/reasonable.
It is perfectly valid to ask whether add-ons or features are still viable on the new board.
'Whining' about people posting on-topic is not very constructive.
I came here to find answers and ask questions, if I couldn't find them. I've found (almost) all the answers I was looking for, but it was a pain to find them among lots of arguing about small details.