SDK • Re: Why can there be only one GPIO IRQ callback?
I think gpio_add_raw_irq_handler_with_order_priority_masked may do what you want.Since the hardware only offers one GPIO IRQ per core, any nice interface adds complexity and latency.To be sure, I...
View ArticleBeginners • Re: What books should Raspberry PI kernel driver development...
There's the Raspberry Pi documentation at: https://www.raspberrypi.com/documentati ... ernel.htmlThank you for sharing. I've read this document many times, but I feel like it's not very helpful for...
View ArticleSDK • Re: Could use a sanity check of this code
I assume that measuring a fan's RPM would be fine with this method and not really needing to dive into PIO. I was looking for another project to measure the clock frequency of I2C I made a debug probe...
View ArticleAdvanced users • Wayland Autostart Multiple Windows on Dual Displays
(I decided to open a new topic since I realized that I was "hijacking" someone else's before.)I have Raspberry Pi 5 running Bookworm with Wayland and Wayfire with two 4k monitors (HDMI).I am trying to...
View ArticleOther projects • Re: Custom Key pad
Ok. I'd focus on U1 to U9. In fact, I'd focus on U1.Print out the first page of the datasheet. Make a worksheet for the 14 pins of JP1, noting that pin 1 is indicated by a tiny triangle on the...
View ArticleBare metal, Assembly language • Re: Bare metal HDMI audio
congrats! and thanks for sharing!Statistics: Posted by cleverca22 — Mon May 06, 2024 1:53 am
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Troubleshooting • vlc wont start
vlc will not start if already streaming:rpi5 64b, bookworm, wayland, camera 3, fresh install to start streamrpicam-vid -t 0 --width 1536 --height 864 --framerate 30 --mode 230410:P --codec libav...
View ArticleGeneral • Re: Pico and C++?
I guess I stay with C.The good news is that you can mix c-style code with cpp classes. Just -as already proposed - use cpp compiler, add the cpp feature to the cmakelists.txt .The SDK definitions and...
View ArticleBeginners • Re: RPI 5 - VOLTAGE INFORMATION NORMAL ???
standard / Genuine 5V Raspberry pi 5 power supply: should it be 5.1 volts instead?Statistics: Posted by namlow — Mon May 06, 2024 3:33 am
View ArticleGraphics, sound and multimedia • "portable" HD display?
I have an idea for an "embedded" (in quotes because it's not truly a kiosk type mode) system that has hit a wall. The software to control things requires, at a bare minimum a display resolution of...
View ArticleNetworking and servers • Re: ssh: connect to host 10.0.0.234 port 22: Host is...
Or just disable WiFi power saving (search the forums for how) on the CM4.You overlooked implementing this suggestion by thagrol.ButchStatistics: Posted by butchkemper — Tue May 07, 2024 12:47 am
View ArticleGraphics, sound and multimedia • Re: "portable" HD display?
Did you even?https://www.amazon.com/APROTII-Raspberr ... B0B2JP32Y6Statistics: Posted by ame — Tue May 07, 2024 12:54 am
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Camera board • Re: Alternate camera cables? (Flexible / rubber instead of...
Wow, that is fancy! And kind of amazing.Thank you for the link!What is kind of funny is that this solution is getting close to the cost of another raspberry pi… Statistics: Posted by gregm123456 — Tue...
View ArticleGeneral discussion • Re: What is the default GPIO UART actually capable of?
though I'm not sure *why* BT can't use the mini onethe baud rate of the mini-uart is tied to the VPU clock frequencyfor power saving reasons, the VPU will underclock itself when idle, but that then...
View ArticleCamera board • Can Raspberry Pi 5 be used at reduced frequency?
Can Raspberry Pi 5 be used at reduced frequency? I only use Raspberry Pi 5 to take time-lapse photos, but it consumes too much power. I want to limit the use of only 2 cores of the CPU or reduce the...
View ArticleMedia centres • Re: Peppy player
If you use a Bluetooth then only the Player volume control type is available:https://github.com/project-owner/Peppy/ ... g.py#L1145Statistics: Posted by peppy.player — Tue May 07, 2024 1:20 am
View ArticleTroubleshooting • Re: pi zero 2 w hanging, getting very hot
I had the original pi zero w running pihole, which does not stress the machine. Upgraded to a pi zero 2 w, and it hangs every week or two. I have the official case, and the official power supply. It...
View ArticleCamera board • Re: Can I get the video from the pi camera live from the...
raspberry pi zero w2. Actually, I've never worked with raspberry before. I participated in a rocket competition and I am asked to transmit a camera image from a long distance, so I need to instantly...
View ArticleRaspberry Pi OS • Re: Disconnect, Reboot, Shutdown from Desktop by command
I just use either "reboot" to reboot or "poweroff" to shutdown.And, if you are doing it from a terminal on the desktop and if everything else is just right, you don't even need sudo.Statistics: Posted...
View ArticleSDK • GPIO interrupts only received if interrupt enabled on core 0?
Friends,I have this code running in a FreeRTOS task:Code: static TaskHandle_t task_handle = xTaskGetCurrentTaskHandle(); printf("%p\n", task_handle); gpio_set_irq_callback(+[](uint gpio, uint32_t...
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