Lmst

#HowTo release #GPIO interfaces for Cortex-M7 on i.MX8MP platform👇

1. Comment out the pinmux (pin multiplexing) configuration;
2. Comment out all device nodes that reference the GPIO.

Click the link below for details:
https://www.forlinx.net/industrial-news/imx8mp-m7-gpio-release-linux-pinmux-769.html

On i.MX8MP, GPIOs are owned by Linux (A53) by default.
If the Cortex-M7 needs them—especially for interrupts—you must release them in the device tree:

• Remove pinmux
• Remove GPIO references
• Disable the GPIO controller if needed

This prevents A53/M7 resource conflicts and ensures real-time reliability.
https://www.forlinx.net/industrial-news/imx8mp-m7-gpio-release-linux-pinmux-769.html

#iMX8MP #CortexM7 #EmbeddedLinux #GPIO #RTOS

OK8MP Development Notes | Detailed Method for A-Core GPIO Pin Release

Am I the only one remembering @vwestlife video about the #K3Wintel or are #ShortCorcuit only up for #Clickbait here?

Personally, I think there should be more such devices like the #RaspberryPi #Pi400 & #Pi500 because they make way more sense than an #AiO in a screen!

Also I wished there was like a mini LCD to clip onto a #Pi400 and just plug into the #GPIO for power (extending it) and into the HDMI for display...

I'm all willing to use a #Lego brick as my default computer. If it has #GPIO ports.

Seit der Zeitumstellung beobachte ich immer wieder seltsame, kleine Zeitsprünge zwischen 2 und 18 Sekunden – unregelmäßig, aber eindeutig. Mein GPS‑Empfänger meldet saubere 1PPS‑Impulse, HDOP ist stabil, und trotzdem: irgendwann hüpft die Kernel‑Sekunde. Heute hab ich mir vorgenommen, dem Ding nochmal strukturiert nachzugehen – mit einem gezielten 30‑Minuten‑Slew‑Only‑Test. Ich hab alle automatischen NTP‑Sprungkorrekturen deaktiviert, nur das sanfte Slewing aktiv […]

Как Работать с UART на Микроконтроллерах ( UART + FIFO = LOG )

В этом тексте я написал про то как работать с UART на микроконтроллерах. Вы узнаете как пользоваться UART до того, как он будет включен. Допустим вы решили делать в своей прошивке printf- отладку. Или даже забабахать UART-CLI (Shell). Или у ваc есть какое -то внешнее устройство конфигурируемое по UART. Например микросхема U-Blox со своим UBX протоколом. Или LTE модуль с AT-командами. Первое с чем Вы столкнетесь - это настроить UART-трансивер. Как же реализовать алгоритм работы с UART периферией?

https://habr.com/ru/articles/981028/

#uart #прерывания #dma #gpio #fifo #LOG #cli #shell #printf #Критическая_секция

BotWave - L'esprit des radios pirates sur Raspberry Pi

https://fed.brid.gy/r/https://korben.info/botwave-raspberry-pi-emetteur-fm-radio.html

<p>Vous vous souvenez des radios pirates clandestines qui diffusaient de la musique interdite depuis des appartements ou des camionnettes ? Hé bien le même concept revient en force, mais cette fois avec un Raspberry Pi et quelques lignes de Python.</p>
<p>
<a href="https://botwave.dpip.lol/">BotWave</a>
, c'est un projet open source qui transforme n'importe quel Raspberry Pi en émetteur FM fonctionnel. Vous branchez une antenne sur le GPIO 4 (la broche 7), vous lancez le script, et hop, vous diffusez sur la bande FM comme un vrai pirate des ondes. Vos voisins peuvent alors vous capter sur leur autoradio sans le savoir.</p>
<p><strong>⚠️ Attention : diffuser sur la bande FM sans autorisation de l'ANFR est illégal en France</strong> (et dans la plupart des pays). Les sanctions peuvent aller jusqu'à 6 mois de prison et 30 000 € d'amende. En pratique, avec une antenne bricolée, la portée se limite à quelques mètres, mais légalement, même ça reste interdit. Les développeurs recommandent d'ailleurs d'utiliser un filtre passe-bande pour limiter les interférences.</p>
<img alt="" src="https://korben.info/cdn-cgi/image/width=1200,fit=scale-down,quality=90,f=avif/botwave-raspberry-pi-emetteur-fm-radio/botwave-raspberry-pi-emetteur-fm-radio-2.png" />
<p>Le truc que j'ai trouvé intéressant avec BotWave, c'est son architecture client-serveur. Vous pouvez contrôler plusieurs Raspberry Pi depuis un seul serveur central, du coup, si vous voulez monter un réseau de diffusion avec des émetteur

My ever growing collection of DIY #GPIO expansion modules for my #FlipperZero 😎😁 So far these are:
-Geigercounter
-NRF24 Module
-Sub 1Ghz extender Module
-Light/Exposure meter
-Spectral UV meter (A, B & C)
-Ir Co2 meter
And surely some pin protector containers for all of them... 😏

@itsfoss no.

There are cheaper #ThinClients if one doesn't need the 40-pin #GPIO or #ARM64 and can use #AMD64 instead.

The 1GB models of the #Pi4, #Pi5, #CM4 & #CM5 solely exist for industrial clients.

Apparently the humidifier I have is pretty easy to reflash with #esphome. You "just" connect your computer to the #GPIO pins and dump firmware, then flash with new one.
I have #flipper zero. I have MH-Z19 CO2 sensor hanging off of it, and getting readings over UART using the flipper app, so that works.
You can use flipper as a bridge between computer and GPIO/UART.

Детектор грозовой активности «раСкат»

Привет, Хабр! Гроза - захватывающее явление… Раскаты грома, сверкание молний вызывают загадочную палитру чувств и желание понять, как рождается молния, в какой точке неба начинается ее путь и где заканчивается. А что если принять радиосигнал молнии и попытаться его запеленговать? Вот об этом и пойдет сегодняшний рассказ. Мы могли бы принять участие в готовом проекте Blitzortung, купив у них детектор и разместив его у себя. Но… пошли своим путем.

https://habr.com/ru/articles/968302/

#gpio #adc #ацп #гроза #молния #детектор #DIY #orangepi #miniwhip #антенна

And I wondered why eink is off...
#raspbeerypi #pi #gpio #eink #tech

2 GPIO pins are bend and other two a bit :/

Обзор микросхемы DRV8870

DRV8870 - это старая простая микросхема управления коллекторным DC -мотором с токами в обмотках до 3.5 Ампер от компании Texas Instruments. По сути это драйвер H-моста . Причем H-мост встроен прямо внутрь корпуса самой микросхемы. Это полностью интегрированное решение. В этом тексте я произвел обзор микросхемы DRV8870. Посмотрим с какой стороны следует подходить к микросхеме DRV8870.

https://habr.com/ru/articles/952484/

#DRV8870 #hbridge #hмост #stm32 #DevEBoxSTM32F4XX_M_V30 #STM32F407VGT6 #pwm #TIMER #gpio #18650

⚡🔢 Memo an mich selbst:

Wenn man in #Tasmota den richtigen #GPIO angibt um den #Zähler auszulesen klappts auch 😵‍💫

Das hat mich jetzt ein paar Stunden gekostet 🤦

#Stromzähler #SmartMeter #HomeAssistant #SmartHome @homelab_de

I didn't stop at Alpine Linux Pi5 install

I continued with LibreELEC the Kodi Raspberry Pi installation.

LibreELEC is a wonderful distro to play with.

#LibreELEC #SBC #ARM #Pie #Raspberry #GPIO #OpenSource #POSIX #Linux #distribution

I've installed Alpine Pi5 version

The second photograph shows more details on IPS LED panel 0

#SBC #ARM #Pie #Raspberry #GPIO #OpenSource #POSIX #Linux #distribution #Alpine

The photograph shows a dark room with multiple screens displaying different content. The top screen features a pink, dripping effect resembling icicles. The middle screen displays a blue interface with the word "Music" and a central box with text, suggesting a media player or control panel. The bottom screen shows a live feed of a truck, with the number "27" visible, indicating a vehicle identification number. The screens are angled and positioned at different heights, creating a dynamic visual arrangement.

Provided by @altbot, generated privately and locally using Ovis2-8B

🌱 Energy used: 0.138 Wh

The photograph shows a dark environment with two screens visible. The top screen displays a command-line interface with red text, resembling a terminal or command prompt, with numerous lines of text cascading downwards. The bottom screen is partially visible, showing a blue background with the word "Music" in white text. A small window on the left side of the bottom screen displays a white interface with a progress bar and a time indicator, showing "00:22:52 / 00:56:28." The overall scene suggests a computer setup, possibly in a dimly lit room, with the top screen likely running a command or script.

Provided by @altbot, generated privately and locally using Ovis2-8B

🌱 Energy used: 0.172 Wh

The image has already been downloaded it's quite small 89 MB and I will just get a medium to install it upon which is a microSD card

#SBC #ARM #Pie #Raspberry #GPIO #OpenSource #POSIX #Linux #distribution #Alpine

This is the next Raspberry distro I shall play with

Alpine Linux

#SBC #ARM #Pie #Raspberry #GPIO #OpenSource #POSIX #Linux #distribution #Alpine

The image displays a mobile phone screen with a dark background. At the top, there is a status bar showing the time as 12:19, a battery level of 93%, and various icons including a signal strength indicator and a star. Below the status bar, there is a section titled "RASPBERRY PI" in white text on a brown background. The text below the title explains the different generations of Raspberry Pi and their corresponding architectures: "First generation Pis including Zero/W (armhf). Pi 2 to Pi 3+ generations (armv7). Pi 3 to Pi 5 generations (aarch64)." Below this text, there are six green download buttons, each with an arrow pointing downwards, labeled with different architectures: "aarch64," "armhf," and "armv7." Each button has two additional labels: "sha256" and "GPG," indicating the hash and encryption methods. At the bottom of the screen, there is a URL bar showing "alpinelinux.org/downloads" and a navigation bar with a home icon, a shield icon, and a menu icon.

Provided by @altbot, generated privately and locally using Ovis2-8B

🌱 Energy used: 0.271 Wh

#Elecrow #LoRaWAN #LR1262 Dev.-Board mit #Raspi-#Pico 2040 schlafen legen und Strom sparen

--> https://cool-web.de/raspberry/elecrow-rp2040-sx1262-lorawan-development-board-deep-sleep.htm

#RaspberryPi #Raspberry #Pi #GPIO #Elektronik #Maker #DIY #Mikrocontroller #Anleitung #Tutorial #RP2040 #LoRa #PCB #Development #Board #Sleep #DeepSleep

This GPIO Board is full of sensors.

Seven APA102 multicolour LEDs
Four 14-segment alphanumeric displays
HT16K33 display driver chip
Three capacitive touch buttons
Atmel QT1070 capacitive touch driver chip
BMP280 temperature and pressure sensor
Blue, green and red LEDs
Piezo buzzer

#Electronics #SBC #ARM #Pie #Raspberry #GPIO #OpenSource #programming #Python #libraries #Adafruit #LEDs #sensors #buttons

https://pinout.xyz/pinout/rainbow_hat

#gpio

Client Info