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by jamesh
Sun Oct 02, 2022 7:47 pm
Forum: Camera board
Topic: HQ camera full sensor video
Replies: 4
Views: 151

Re: HQ camera full sensor video

The video modes use on sensor binning, which means they are better than a simple sample. So the quality should not be as bad as you think.
by jamesh
Thu Sep 29, 2022 12:10 pm
Forum: General discussion
Topic: Request: Hardware crypto extensions
Replies: 10
Views: 601

Re: Request: Hardware crypto extensions

Why should every user pay for something he/she does not need? Why don't you simply add a TPM module? I'm not sure that a TPM would help. AIUI TPMs are for secure key storage, management and generation not for general crypto acceleration. Even with a TPM you still need to do the actual en/decryption...
by jamesh
Thu Sep 29, 2022 10:03 am
Forum: General discussion
Topic: Request: Hardware crypto extensions
Replies: 10
Views: 601

Re: Request: Hardware crypto extensions

Heater wrote:
Thu Sep 29, 2022 8:14 am
I'm sure the Pi folks are aware of all these things as well.
We are.
Heater wrote:
Thu Sep 29, 2022 8:14 am
So, it's kind of pointless continuing a discussion from a locked thread and campaigning for ones personal favorite feature. They know already.
We do.
by jamesh
Thu Sep 29, 2022 5:37 am
Forum: Raspberry Pi 400
Topic: Any update on black/grey version of the RP400?
Replies: 42
Views: 9637

Re: Any update on black/grey version of the RP400?

Gavinmc42 wrote:
Thu Sep 29, 2022 1:20 am
It's just a matter of finding the time to do it, when we are very busy on other stuff.
Hmm, I like "other stuff" :D
You will indeed.
by jamesh
Wed Sep 28, 2022 12:50 pm
Forum: MicroPython
Topic: print() vs. PIO IRQ (was: PIO parallel input to data buffer is not fast enough)
Replies: 9
Views: 338

Re: PIO parallel input to data buffer is not fast enough

@ghp Thanks for the pointers - I already tried speeding up the IRQ handler using fixed size buffer with no effect. Generating native CPU opcodes could further speed up the IRQ handler but if the print() has higher IRQ priority (?), this won't matter much as at some point in time, a PIO IRQ will not...
by jamesh
Wed Sep 28, 2022 10:09 am
Forum: MicroPython
Topic: print() vs. PIO IRQ (was: PIO parallel input to data buffer is not fast enough)
Replies: 9
Views: 338

Re: PIO parallel input to data buffer is not fast enough

Ok the culprit seems to be the print() function - filling the buffer first and then doing the output results in expected data. The IRQs probably collide or the USB has higher priority. Can this be avoided using the second core? How would one share the data? print functions always takes a very long ...
by jamesh
Wed Sep 28, 2022 10:07 am
Forum: Raspberry Pi 400
Topic: Any update on black/grey version of the RP400?
Replies: 42
Views: 9637

Re: Any update on black/grey version of the RP400?

Interesting. I would have thought that was a "solved problem" since there have been official black/grey Pi cases for years. I was half expecting the response to be a shortage of black resin... The bottom half of the Pi 400 is different than what is on the keyboard so needs a new mold. Inj...
by jamesh
Wed Sep 28, 2022 10:05 am
Forum: Compute Module
Topic: Raspberry Pi CM3 Ethernet and Uboot issue
Replies: 7
Views: 399

Re: Raspberry Pi CM3 Ethernet and Uboot issue

What 6by9 says. Our advice is to take the hit and move to the latest kernel. It's worth just trying thigs to see how much effort it is, you might find its pretty easy.
by jamesh
Wed Sep 28, 2022 10:03 am
Forum: General discussion
Topic: Forum use question
Replies: 10
Views: 456

Re: Forum use question

GHamsz wrote:
Wed Sep 28, 2022 9:43 am
The "big red reply button" in my mind is responding to the initial post.

My question was... Is clicking the " the way you reply to a reply.
Yes, it just replies to the end of the thread.
by jamesh
Wed Sep 28, 2022 10:01 am
Forum: General discussion
Topic: NASA EZIE Mission in need of PI Zeros for Outreach Program
Replies: 14
Views: 813

Re: NASA EZIE Mission in need of PI Zeros for Outreach Program

The EZIE mission, A NASA Heliophysics mission being developed by the Johns Hopkins University Applied Physics Laboratory has a need for a large number of PI Zeros (1000). As part of our outreach program we have developed a low cost ground magnetometer kit, based on a PI zero. We have been funded by...
by jamesh
Tue Sep 27, 2022 5:08 pm
Forum: Wanted
Topic: Looking for bulk Raspberry Pi 2B/3B/3B+
Replies: 13
Views: 1684

Re: Looking for bulk Raspberry Pi 2B/3B/3B+

Try business@raspberrypi.com, we might be able to help depending on use case and quantities.
by jamesh
Mon Sep 26, 2022 6:37 pm
Forum: General discussion
Topic: Is Raspberry Pi4 protected from forced shutdowns?
Replies: 26
Views: 1006

Re: Is Raspberry Pi4 protected from forced shutdowns?

the login page forgets what pdf you where trying to download after you login, you have to click the original pdf link again an for more confusion, it doesnt open in a tab that time, it just downloads it directly i didnt notice, until i had 5 copies in my downloads folder, was wondering why the tab ...
by jamesh
Mon Sep 26, 2022 3:42 pm
Forum: General
Topic: Country of Origin
Replies: 2
Views: 291

Re: Country of Origin

Is that no components at all, or just ones that could be corrupted? (i.e. SoC). Do resistors count for example, as they are "incorruptible"?

The SoC is manufactured in Taiwan, the board is populated in Japan. Not sure of source of other parts, but will try find someone who does know.
by jamesh
Mon Sep 26, 2022 3:36 pm
Forum: General discussion
Topic: Is Raspberry Pi4 protected from forced shutdowns?
Replies: 26
Views: 1006

Re: Is Raspberry Pi4 protected from forced shutdowns?

bctv wrote:
Mon Sep 26, 2022 1:59 pm
Sorry jamesh, I can't have access to the document. Is there written what kind of mitigation can I use for my Raspberry Pi4?

Many thanks
Lots of stuff in that document. Why can't you read it?
by jamesh
Mon Sep 26, 2022 3:36 pm
Forum: General discussion
Topic: Is Raspberry Pi4 protected from forced shutdowns?
Replies: 26
Views: 1006

Re: Is Raspberry Pi4 protected from forced shutdowns?

No, it does not protect against unplanned power off. You would need to put in mitigations if this is a concern. See https://pip.raspberrypi.com/categories/685/documents/RP-003610-WP/RP-003610-WP-1.pdf for data on improving filesystem robustness in this area. is there a chance that the PI4 could be ...
by jamesh
Mon Sep 26, 2022 3:35 pm
Forum: General discussion
Topic: Is Raspberry Pi4 protected from forced shutdowns?
Replies: 26
Views: 1006

Re: Is Raspberry Pi4 protected from forced shutdowns?

See https://pip.raspberrypi.com/categories/685/documents/RP-003610-WP/RP-003610-WP-1.pdf for data on improving filesystem robustness in this area. what is so secret in that document, that i must login and get a watermarked pdf? or is the PIP just blindly watermarking every single document? Three le...
by jamesh
Mon Sep 26, 2022 11:40 am
Forum: Raspberry Pi 400
Topic: Any update on black/grey version of the RP400?
Replies: 42
Views: 9637

Re: Any update on black/grey version of the RP400?

Hi Jamesh Thank you for taking the time to check, much appreciated. Regards G. So, had a chat with one of our mechanical design chaps. Getting the black case right for the 400 will be difficult, black is much more difficult to get blemish free than the red/white of the current model. That work stil...
by jamesh
Mon Sep 26, 2022 11:38 am
Forum: Raspberry Pi 400
Topic: Any update on black/grey version of the RP400?
Replies: 42
Views: 9637

Re: Any update on black/grey version of the RP400?

kip_the_elder wrote:
Mon Sep 26, 2022 10:45 am
Please do not get rid of the current colour scheme.

I love it.

Thx
No intention of getting rid of the red/white.
by jamesh
Mon Sep 26, 2022 10:35 am
Forum: General discussion
Topic: Is Raspberry Pi4 protected from forced shutdowns?
Replies: 26
Views: 1006

Re: Is Raspberry Pi4 protected from forced shutdowns?

No, it does not protect against unplanned power off. You would need to put in mitigations if this is a concern.

See https://pip.raspberrypi.com/categories/ ... 0-WP-1.pdf for data on improving filesystem robustness in this area.
by jamesh
Sun Sep 25, 2022 12:17 pm
Forum: General discussion
Topic: Allocations of Raspberry Pi
Replies: 25
Views: 9097

Re: Allocations of Raspberry Pi

Thank you for the update, I appreciate that it must be difficult for Raspberry Pi to find a balance. I heard a rumour that there are no Pi's available as someone called Jeff Geerling has them all :lol: allthough his videos are brilliant so he deserves them all. We are talking lots of small companie...
by jamesh
Sun Sep 25, 2022 12:13 pm
Forum: General discussion
Topic: Allocations of Raspberry Pi
Replies: 25
Views: 9097

Re: Allocations of Raspberry Pi

Thank you for the update, I appreciate that it must be difficult for Raspberry Pi to find a balance. I heard a rumour that there are no Pi's available as someone called Jeff Geerling has them all :lol: allthough his videos are brilliant so he deserves them all. We are talking lots of small companie...
by jamesh
Sun Sep 25, 2022 9:38 am
Forum: General discussion
Topic: Allocations of Raspberry Pi
Replies: 25
Views: 9097

Re: Allocations of Raspberry Pi

The reasons for prioritisation of industrial customer has been explained many times. I can only assume that people who think that their personal projects are worth someones else's job don't actually have to keep a family fed and watered with a roof over their heads. They also seem to be under the im...
by jamesh
Sun Sep 25, 2022 9:34 am
Forum: Off topic discussion
Topic: Ars Technica article about the birth of the ARM CPU's.
Replies: 24
Views: 1886

Re: Ars Technica article about the birth of the ARM CPU's.

A good example of a product that sell well with no advertising is .....wait for it....the Raspberry Pi.

We sell on engineering quality and price. Not sure we have ever spent any money on advertising. Unless you count having a stall at a trade show, which we have only done a few times.
by jamesh
Sat Sep 24, 2022 5:38 pm
Forum: Bare metal, Assembly language
Topic: Very low software rendering performance
Replies: 2
Views: 176

Re: Very low software rendering performance

If you draw squares instead, a simple fill, does that go any faster. Worthwhile finding out where the bottleneck is. The Pi4 is MUCH faster than you seem to be getting.

What are you using as a framebuffer? ie how does the image get on the display?
by jamesh
Sat Sep 24, 2022 5:35 pm
Forum: General
Topic: RP2040and ADIN1110
Replies: 1
Views: 108

Re: RP2040and ADIN1110

RO2040 has a couple of SPI ports, so it's just a matter of the software, which is usually pretty easy.

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