Graphics programming • Fast direct access to texture/framebuffer memory from CPU
This might be a bit silly and uninformed, but is there a way to read and write texture (or framebuffer, GL or libdrm) memory from CPU? Without layout/format conversion, just fast direct access to the...
View ArticleC/C++ • Retrieving keyboard model/layouts/variants
I would like to improve Raspberry Pi OS support in a software I am contributing to, but I can't find the information I need. Precisely, I need to read the keyboard model/layouts/variants (I need to...
View ArticleTroubleshooting • Turn Display On and Off with Crontab at Raspberry 5
Hello,since a week I'm trying to get a crontab turn off and on my monitor.Simply this gives me:Code: wlr-randr --output HDMI-A-1 --offCode: failed to connect to displayThis works via ssh:Code:...
View ArticleGeneral • RP2040 power voltage readout?
HiI am running the RP2040 off of a 3.7v Li-ion battery.Can I get the power voltage of the RP2040 somehow?Or do I need to use a separate analog input?It's a Seeed XIAO RP2040 I am...
View ArticleAdvanced users • Independent Stepper Motor Control for Liquid Pumps
I'm working on a manufacturing project using a Raspberry Pi 4 with 8GB of RAM, DM556 step motor drivers, and 10 stepper motors. The idea is to have a single main Python script with a GUI, where I can...
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Beginners • Problems re-flashing CM4
I am trying to re-flash a CM4. I had it set up and flashed for a 3d printer, but never put it into use (too many projects) Now I find my self needing to use it on a different 3d printer. I wanted to...
View ArticleGeneral discussion • How to make the GPIOD global
Just started using GPIOD and have run into a problem I hope someone can help me with. The main.c has the code that opens the chip, defines the lines used and declares them to be outputs. I call...
View ArticleOther projects • ESC telemetry conversion
Is anyone here familiar with this project?https://github.com/dgatf/msrc?tab=readme-ov-fileI have a Hobbywing FlyFun 80A and FrSky SR6 receiver and FrSky X20 Pro AW transmitter. The ESC telemetry...
View ArticleBeginners • Raspberry Pi Camera Module 3 Not Working
I inserted the camera module with the blue side facing the ports, and ran "raspistill -o test.jpg" and nothing happened what do I do?Statistics: Posted by Ace5955 — Sat Sep 28, 2024 5:20 pm — Replies...
View ArticleTroubleshooting • Gamecon_gpio_rpi Driver with N64 controller issue
Hi this is my first post here.I have a Zero 2 W with latest Retropie installed.I have an N64 controller wired up to the GPIO for use as a controller connected dirrectly to the PI to play N64 games....
View ArticleGeneral discussion • How do I remove the console after loading the OS from...
After power is applied, the pi4 is loaded and the console link remains open at the end of the download. How can I remove it so that there is just a black screen without symbols. And how can you...
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Troubleshooting • Point-to-point ethernet - Unidentified Network - headless...
Hello! Beginner here, trying to learn. I think I'm doing the IP network setup incorrectly.I've read the sticky concerning point-to-point ethernet, but I think this setup is a bit different. I...
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General discussion • Chromium / Webbrowser freezes whole RPI
Hi all,just bought two RPI 4B today to build up slideshow frames. My pictures are stored on my Nextcloud and in order to connect I need to log in via a browser. However, independend from the website...
View ArticleNetworking and servers • [Help] Setup wlan0 in monitor mode
Hi,I am using Raspberry Pi OS Lite 64 bit. I wanted to use wlan0 interface in the monitor mode for wireless packet captures. So I checked what are all the modes supported by the wireless card/OS using...
View ArticleRaspberry Pi OS • apt update fails because of another variant of 'invalid...
When attempting to update my various Pis I currently see Code: sudo apt updateHit:1 http://deb.debian.org/debian bookworm InReleaseGet:2 http://deb.debian.org/debian bookworm-updates InRelease [55.4...
View ArticleRaspberry Pi OS • Possible to "upgrade" glibc without installing a...
I have a program running on my (older) RaspiOS system (*) that upgraded itself today and now the latest version complains that my glibc is too old. The program still runs, but everytime it runs, it...
View ArticleRaspberry Pi OS • gpiozero kludge
Rather than fixing gpiozero for the latest kernel update on Pi5 the OS seems to have introduced a kludge:-Code: /dev/gpiochip4 -> gpiochip0This breaks my other code which looks for...
View ArticleInterfacing (DSI, CSI, I2C, etc.) • Libcamsrc and Module 3
Hello! I am trying to use libcamsrc with my module 3 camera but unfortunately - the library sucks ass. When using the library it drops 40 odd frames at 2304 x 1296. libcam-hello works fine at full 50....
View ArticlePython • python debugging on vscode
I've been using vscode for python development on my several raspberry pi machines for quite some time. Recently one machine started misbehaving. In vscode, the python program will run fine however,...
View ArticleBeginners • msmtp with Outlook.com emial provider config stopped working...
Hi All,I had configured msmtp with Outlook.com email provider for years. Today it stopped working. It the free account which you can open with Microsoft, not business Office 365. I have red that in...
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