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by Dygear
Mon Mar 01, 2021 4:07 am
Forum: General
Topic: Pico "Hypervisor" and RAM Configuration.
Replies: 5
Views: 704

Re: Pico "Hypervisor" and RAM Configuration.

There are 4 banks of 64KB each which are organized in an interlaced way: 0x20000000: Bank 0 0x20000004: Bank 1 0x20000008: Bank 2 0x2000000C: Bank 3 0x20000010: Bank 0 0x20000014 Bank 1 ... It is written that this structure helps to distribute the access to the different banks in an efficient way. ...
by Dygear
Mon Feb 22, 2021 4:38 pm
Forum: General
Topic: Pico "Hypervisor" and RAM Configuration.
Replies: 5
Views: 704

Re: Pico "Hypervisor" and RAM Configuration.

So it does run at first boot, but only to check if the BOOTSEL button is pressed, otherwise it passes control to the user’s program. When it passes control it removes it self from memory, so it’s not a hypervisor. Sort of like a BIOS in that it checks things and then passes off control. MCP ... Ha, ...
by Dygear
Mon Feb 22, 2021 3:55 am
Forum: General
Topic: Pico "Hypervisor" and RAM Configuration.
Replies: 5
Views: 704

Pico "Hypervisor" and RAM Configuration.

I'm just trying to nail this down in my own head. The PICO and all RP2040 chips have " Permanent ROM " built into that does all of the really nice house keeping stuff like when holding the BOOTSEL button mounts the Pico as a drive onto the system as a USB UF2 bootloader, if it's not presse...
by Dygear
Thu Jan 28, 2021 6:17 am
Forum: General
Topic: Embedded Rust Support
Replies: 1
Views: 1089

Embedded Rust Support

Hello everyone, I would like to discuss adding Embedded Rust support for the Pico and RP2040 chip in general. My understanding is that there is already some efforts underway by other rustaceans to make this happen on reddit ( Would it be possible to run Rust on the new Raspberry Pi Pico? and The Rus...
by Dygear
Tue Jan 26, 2021 3:23 pm
Forum: General
Topic: WIll this work for making a Megadrive controller to USB adaptor
Replies: 6
Views: 393

Re: WIll this work for making a Megadrive controller to USB adaptor

The original Sega MegaDrive/Genesis controllers are actually supposed to run on 5V, whereas the controller on Instructables feeds them with 3.3V. I suspect therefore that it might not work with all controllers. The 3-button and 6-button controllers are different in that the first have a simple Sele...
by Dygear
Sun Nov 15, 2020 6:14 pm
Forum: Advanced users
Topic: Moving Linux Kernel to 5.10
Replies: 641
Views: 124402

Re: Moving Linux Kernel to 5.10

I upgraded my system a Raspberry Pi 400 running Raspberry Pi OS 64 bit LITE from 2020-08-24 and all `apt update && apt upgrade` installs done as of 30 minutes ago. My first two boots on the Raspberry Pi 400 with the 5.10 kernal failed in different ways. The first one failed here and the seco...
by Dygear
Sun Oct 18, 2020 3:04 am
Forum: General discussion
Topic: STICKY: Raspberry Pi OS (64 bit) beta test version feedback
Replies: 996
Views: 264998

Re: STICKY: Raspberry Pi OS (64 bit) beta test version feedback

Please let me be not the first nor the last to ask ... "Are we there yet?" If there is a webpage with a status of some kind, perhaps an outstanding list bugs and issues and whatnot, which could be used as some reasonable form of countdown indicator, then could some kind soul please point ...
by Dygear
Tue Jun 02, 2020 11:39 pm
Forum: General discussion
Topic: STICKY: Raspberry Pi OS (64 bit) beta test version feedback
Replies: 996
Views: 264998

Re: Raspberry Pi OS (64 bit) beta test version

hi , i'm downloading it, but perhaps make a torrent out of it? at 1GB it may get popular fast hence bittorrent may help there. https://downloads.raspberrypi.org/raspios_arm64/images/raspios_arm64-2020-05-28/2020-05-27-raspios-buster-arm64.zip.torrent Is there a lite version of Raspberry Pi OS 64-bi...
by Dygear
Fri Nov 22, 2019 6:33 am
Forum: General discussion
Topic: Using the Raspberry Pi 4 as an iPad Pro Dongle
Replies: 3
Views: 6464

Using the Raspberry Pi 4 as an iPad Pro Dongle

https://youtu.be/IR6sDcKo3V8 Tech Craft, a YouTube channel that I had never heard of until about 30 minutes ago did a video called "My Favourite iPad Pro Accessory: The Raspberry Pi 4". It shows him sitting up and using a Raspberry Pi 4 with only as USB-C Cable to connect from the iPad Pro...
by Dygear
Thu Aug 08, 2019 9:41 am
Forum: Advanced users
Topic: Panel Widget Source Code
Replies: 4
Views: 715

Re: Panel Widget Source Code

Thanks for the pointing in the right direction. I did update my sources list file, and then pulled the source with the apt source command, only to have this as the output. It seems that I didn't quite get everything, because I don't see the paths that the patch files are using. But that could be bec...
by Dygear
Thu Aug 08, 2019 6:04 am
Forum: Advanced users
Topic: Panel Widget Source Code
Replies: 4
Views: 715

Panel Widget Source Code

Where is the source code for panel widgets installed by default within Raspbian Buster? CPU Temperature Monitor CPU Usage Monitor I want to add a third one Memory Monitor , that would use the same source code base as these two to ensure a high code quality. But I can't seem to find the source code f...
by Dygear
Mon Jul 29, 2019 3:37 am
Forum: General discussion
Topic: Heat Sinks
Replies: 8
Views: 2188

Re: Heat Sinks

I just slipped my Raspberry Pi 4B 4GB into the FLIRC case and it's brilliant. It's somewhere in line of a 20-30c drop in temperatures. They also appear to be using the 3M Thermal transfer materal as it's a the blue tape that wh7qq described.
by Dygear
Tue Jul 23, 2019 3:14 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 USB Power Issues? RTL-SDRs
Replies: 16
Views: 9647

Re: Raspberry Pi 4 USB Power Issues? RTL-SDRs

I just did a firmware upgrade on my rPi4/4GB and now rtl_test works flawlessly. Excellent job! Wow, I can even capture at 3.2Msps with GQRX and the 8192 @ 30fps waterfall. Doesn't get too hot while doing that too in an open case with an ambient temperature of 17C. CPU load is up at 70% but the syste...
by Dygear
Sun Jun 30, 2019 10:30 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 USB Power Issues? RTL-SDRs
Replies: 16
Views: 9647

Re: Raspberry Pi 4 USB Power Issues? RTL-SDRs

I have no idea why, at this point, but the Terratec T Stick PLUS Elonics E4000 tuner seems to work every time I've tested it. Rafael Micro R820T2 has issues, which must still be Pi4 related because it works fine on my Pi3 and PC. It's super odd that the E4000 would work fine every time. What about ...
by Dygear
Fri Jun 28, 2019 10:19 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 USB Power Issues? RTL-SDRs
Replies: 16
Views: 9647

Re: Raspberry Pi 4 USB Power Issues? RTL-SDRs

I will try my USRP at some point to see if it works, but I'm not very hopeful. Hopefully this can be fixed soon. Good point. I have a HackRF laying around. So I used that and it works just fine. AND IT'S FREAKING FAST! Well ... The first time it was. Haven't been able to get it to work a next time.
by Dygear
Fri Jun 28, 2019 7:46 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 USB Power Issues? RTL-SDRs
Replies: 16
Views: 9647

Re: Raspberry Pi 4 USB Power Issues? RTL-SDRs

I noticed this too while trying to get GQRX up and running. I was gonna try my Elonics 4000 and no USB extension today, but I guess you've ruled that out. I have a Pi 4 with 4GB RAM and the R820T2 tuner plugged into USB3 port. Keyboard and mouse were the only other things plugged in. I'm using the ...
by Dygear
Fri Jun 28, 2019 7:36 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 USB Power Issues? RTL-SDRs
Replies: 16
Views: 9647

Re: Raspberry Pi 4 USB Power Issues? RTL-SDRs

That rules out the rPi4B as a software defined radio then, at least until the software is fixed. I'm using it to capture emergency traffic for most of the ambulance corps in the county that I live and giving them access to the audio feed to better respond to emergency assignments. Good thing the rPi...
by Dygear
Fri Jun 28, 2019 5:58 pm
Forum: Troubleshooting
Topic: Pi4 USB keyboard issues on boot
Replies: 7
Views: 1564

Re: Pi4 USB keyboard issues on boot

I wonder if these issues are related.

Raspberry Pi 4 USB Power Issues? RTL-SDRs
by Dygear
Fri Jun 28, 2019 5:55 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 USB Power Issues? RTL-SDRs
Replies: 16
Views: 9647

Raspberry Pi 4 USB Power Issues? RTL-SDRs

When trying to use an RTL SDR I'm getting the following error rtlsdr_write_reg failed with -7 . -7 according to it’s value within libusb_error enum is LIBUSB_ERROR_TIMEOUT. I’ve been told that -6 (LIBUSB_ERROR_BUSY) is due to a lack of power on the USB Bus, perhaps that’s the same problem here? But ...
by Dygear
Fri Jun 28, 2019 3:43 am
Forum: General discussion
Topic: raspberry pi 4 h.265 hardware accelerate encode
Replies: 9
Views: 23465

Re: raspberry pi 4 h.265 hardware accelerate encode

Does it still require a license key? YouTube video encoding seems to be slow, and I'm wondering if it's because I'm not actually using the Hardware Decoder?
by Dygear
Fri Jun 28, 2019 3:40 am
Forum: General discussion
Topic: Internet Experience on the Raspberry Pi 4
Replies: 1
Views: 529

Re: Internet Experience on the Raspberry Pi 4

I'm using a 2GB version and it's VASTLY improved over the 3B+. I think the RAM speed coupled with the doubling of RAM made a massive different over and above the CPU alone.
by Dygear
Fri Jun 28, 2019 3:35 am
Forum: General discussion
Topic: Raspberry Pi 4 Heatsink vs Fan vs Flirc Case
Replies: 66
Views: 32885

Re: Raspberry Pi 4 Heatsink vs Fan vs Flirc Case

It's a fair point to say surface area is more important than mass. My use case is that I use them as software defined radios, so it's a constant stream of numbers to crunch 24/7/365. I've actually had a Pi in operation for the past year doing exactly that in the Flirc case inside of an ambulance gar...
by Dygear
Fri Jun 28, 2019 3:27 am
Forum: General discussion
Topic: Macbook USB C power adapter for RPi 4
Replies: 9
Views: 14579

Re: Macbook USB C power adapter for RPi 4

Confirmed doesn't work with a Apple 87W USB-C Charger. But I did have a old iPad power brick laying around and a USB-Type A to USB Type-C connector on it and that works a treat!
by Dygear
Thu Jun 27, 2019 2:20 am
Forum: General discussion
Topic: Raspberry Pi 4 Heatsink vs Fan vs Flirc Case
Replies: 66
Views: 32885

Re: Raspberry Pi 4 Heatsink vs Fan vs Flirc Case

Just got the 2GB version of the rPi4 and the chip itself runs very warm to the touch. Like it's uncomfortable to put your finger on it. I don't remember the rPi3+ being this uncomfortable. With that said I'm actually pretty worried about the Flirc Case. I pre-ordered the new case for the rPi4 and I'...
by Dygear
Fri Jan 04, 2019 2:06 pm
Forum: Advanced users
Topic: Moving Linux kernel to 4.19 [Already moved for many months now (in january 2020)]
Replies: 283
Views: 133475

Re: Moving Linux kernel to 4.19

I happy to do that, I just don't know how to do that. lol.

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