Beginners • Re: Running a REXX program by typing its name
Many thanks @thagrol and @jahboater for your help and patience with my newbie questions.Between you both you've resolved my initial problem, given me tips on how to achieve what I wanted in the Linux...
View ArticleInterfacing (DSI, CSI, I2C, etc.) • Re: RP1 MIPI Register map
Those CFG registers aren't of use to someone developing a camera driver. They are for PHY BIST and e.g. forcing input clocks and a test mode, then reading back status bits.Statistics: Posted by jdb —...
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Troubleshooting • Re: Missing desktop
yeah, all the settings should be resetjust redo it like a fresh installthat is the same raspberry os your using, except i'm just rolling around ideasmainly for touch screendon't no screen size yetmost...
View ArticleBeginners • Re: How do I convert pi 4 rev 1.5 to version 1.4 rev?
Look at timg236's post above. What you can (probably) do is to upgrade the boot files for your old software so that it will support the new hardware revision. Alternatively, chase the supplier of your...
View ArticleBare metal, Assembly language • Re: Write to newly setup page in page tables...
There was a pretty serious bug in invalidate_virtual_address ...This code writes to address instead of reading from it.Code: asm volatile("tlbi vaae1is, %0" : "=r" (address)); This is the correct...
View ArticleTroubleshooting • Re: Error writing file to disk
That is a bad diagnostic message. I realise it is made difficult because rpi-imager is cross-platform, but it really is essential to give an actual error string or code, and some information about...
View ArticleBeginners • Re: Keyboard
Thanks. The wikipedia article explains some of the issues, and evidently the fact that my keyboard is designed for a Mac is important.Yes, of course it is about selecting the right layout. I can...
View ArticleCamera board • Re: How to Overlay Translucent Shapes on Picamera2 Preview.QT
Hi, so far as I recall, the set_overlay method only accepts 4-d numpy arrays. Presumably, then, you need to turn the QPainter output into a numpy array. PyQt experts out there might be able to help,...
View ArticleBeginners • Disabling SPI 0 interface to make GPIO 8 available
We have a Compute Module 4 (CM4) based hardware ready in which MCP2518FDT chip is connected to the SPI 1 interface. Below pins are used for SPI 1:SPI_MOSI ==> GPIO20SPI_MISO ==> GPIO19SPI_CLK...
View ArticleCamera board • Re: How to Adjust Focus and LSC in Camera Module 3
Hi, first let me address the LSC part of the question.Someone asked about this just the other day, and unfortunately I discovered I still haven't written down any formal instructions anywhere for...
View ArticleDevice Tree • [SOLVED] Overlay for SIP (ACC + MAG) fails with no details in logs
Not 100% clear to my why edge is non-working, but so be it.changed toCode: fragment@46 {target = <&i2cbus>;__dormant__ {#address-cells = <1>;#size-cells = <0>;status =...
View ArticleGeneral discussion • Re: Can I run two OS simultaneously on my Pi 5 16GB RAM...
Run the two OSes under KVM (probably via libvirt / virt-manager), hosted on PiOS. Job, in theory, done. I've not attempted this, but I can't see why it wouldn't work.Statistics: Posted by dickon — Fri...
View ArticleCompute Module • Re: PCI initialization failure following kernel panic reboot...
What does the vendor of the carrier board (MCU Zone) say?Statistics: Posted by fchk — Fri Mar 07, 2025 9:56 am
View ArticleC/C++ • Re: Vscode - the window is not responding
Constant crashing (code 5) after updating to 1.98.I am not the only one: https://github.com/microsoft/vscode/issues/242742Statistics: Posted by apk19 — Fri Mar 07, 2025 10:03 am
View ArticleGeneral • Re: Reading a 12V PWM signal.
Found an interesting post:https://www.cloudynights.com/topic/8399 ... v-outputs/Last remark there "Posted 06 August 2024 - 10:02 PM" mentions 'capacitive filtering' on the PWM outputs.Options:Using a...
View ArticleInterfacing (DSI, CSI, I2C, etc.) • Re: MCP2515 not working on can0 interface
I really don't know - you could even be looking at the wrong SPI bus or chip select. Without any kind of documentation you are just going to have to try all possible combinations, unless you can look...
View ArticleRaspberry Pi Connect • Re: Raspberry Pi Connect missing "Connect...
Unless it has changed, then yes. It is a screen sharing programme, if nobody is logged in then there is no desktop to share.You could try enabling linger (see docs), needed for a terminal.But...
View ArticleTroubleshooting • Re: GUI not working after installing and updating Bookworm
4. sudo apt update / sudo apt upgradeFrom my experience with Raspberry Pi OS, you are much better off using 'sudo apt full-upgrade' rather than 'sudo apt upgrade'. That may be the cause of you...
View ArticleOff topic discussion • Re: Raspberry pi zero 2W OS recommendations
The Zero2W only has 512MB ram, it can run a desktop, but with its limited ram, you would likely want a better base for your intended useage, especially internet & YouTube....Statistics: Posted by...
View ArticleAutomation, sensing and robotics • Power Supply and Buck Converters ?
Hi, everyone!I am working on a robotics project and I have couple of questions regarding power supplied and buck converters.Robot will consist of 18x servos with following specs:Operating Voltage...
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