SDK • Re: Accessing ROM memory from SM issues
Thanks for clarifying how your code works. I really like your use of the DMA to perform the requested data read with no CPU intervention.FLASH reads are significantly slower than those from SRAM. SRAM...
View ArticleGeneral • Re: RP2040 boards (including a Pico) come up in bootsel after...
If you had an o-scope then you could probe the RUN and VBUS lines during these wakeup events to see if you get any unexpected glitches on either of them.If you had a USB protocol analyzer then you...
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Official Display • Re: [Pi5] Display not working
Which OS do you use (uname -a)?Post pictures of how you've connected the screen.How do you supply power to the 7in: two jumper wires (to 5V/GND) or via microUSB?https://www.raspberrypi.com/documentati...
View ArticlePython • Re: Reading a DS18B20
@cleverca22Thank youStatistics: Posted by RDS — Mon Dec 25, 2023 10:59 pm
View ArticleBeginners • Orange Pi what's the difference?
I see Orange Pi 5's on Alixpress they seem to have a better processor and wifi is an add on module but they're also a good priceBut mostly it seems the same, the website seems to be downAnyone used...
View ArticleBeginners • Re: Raspberry pi car head unit - help please
If you're using a battery pack, make sure it's connected to the Raspberry Pi and configured to charge when the car is on. Alternatively, you can connect the Raspberry Pi directly to the car's...
View ArticleGaming • Re: Need help with a project
Start by using Pi Imager to flash Raspberry Pi OS with Desktop onto an sd card.https://www.raspberrypi.com/software/Statistics: Posted by rpiMike — Tue Dec 26, 2023 10:52 pm
View ArticleSDK • How does SPI DMA work?
I've been looking through the SDK documentation and the example and it's not quite clicking on how it works. For the peripheral I am using, I need to:1. write the instruction2. write the address3....
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Graphics programming • Re: 0x8000 verts the max?
at least on the pi0-pi3 v3d core, things worked like this:https://github.com/cleverca22/hackdrive ... p#L64-L112first, you created an array of vertex data in ramthen you make a shader record, that...
View ArticleGeneral discussion • Re: RPi 5 as a desktop daily driver?
And as I said, I'm not much of a computer expert, but I became an expert in avoiding Windows, so no worries there.You can avoid Windows OS but still use MS Office365 in Chromium on a Pi.Not sure if...
View ArticleTroubleshooting • Re: Pi4b not starting and hot in seconds
Do not just remove that component and try booting with the same power supply. If that power supply is what damaged the diode and only the diode suffered, the unprotected 4B will be killed.Statistics:...
View ArticleMicroPython • Re: PICO to third party segment display using SPI
Flicker free will be a problem.With 5ms per digit there are 40ms per display needed. Which makes 25Hz update rate where the human eye still sees flickering in peripheral vision. You could try to...
View ArticleTroubleshooting • Re: RPi Zero 2W analog output is chopped off by 7 columns...
https://github.com/raspberrypi/linux/bl ... /vc4_vec.cthis is the core for the linux composite driverbut i think the general way you want to fix it, is like this:Code:...
View ArticleAdvanced users • Re: RPi 4B no shell over UART with meta-raspberrypi
Continuing to test things out with the board, I made these two changes and I have a shell over UART now. I moved from core-image-minimal to the core-image-baseI changed the init manager to systemd...
View ArticleAutomation, sensing and robotics • Re: Speed camera
Thanks, I'm UK based and it's similar here but usually the driver gets a letter which is a slap on the wrist because it's not prosecutable without a calibrated device operated by a trained operator....
View ArticleGeneral • Re: New to pico, having trouble with hardware interrupts in C
I guess there are many errors.But to name one that directly stands out:Code: bool interrupt_flag = false;must beCode: volatile bool interrupt_flag = false;The interrupt handler is changing the...
View ArticleOfficial Display • Re: Display won't work for a Pi3
I have a project using a Pi 2 and a Pi Touch display.I wanted to see if using a Pi 3 would improve the performance, so I used the Raspberry Pi Imager to create a new boot SD card for my Pi 3.I hooked...
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Raspberry Pi OS • Re: Some sort of firewall preventing torrent connection?...
does your torrent client have some kinda built in test.i'm not on the right router for torrenting right now, so it fails the test. Statistics: Posted by kerry_s — Wed Dec 27, 2023 9:52 pm
View ArticleSDK • Re: FreeRTOS SMP + LittleFS makes system hardfault
FreeRTOS combined the non SMP (main) and SMP (smp) branches recently, and we have not looked at their code yet. I would try FreeRTOS versions prior to this to see if they work first.Thanks for your...
View ArticleSDK • Re: Put code in the Stack section
Use something likeCode: void __scratch_x("my_sub_section") core1(void) (can use __scratch_y too)Statistics: Posted by kilograham — Wed Dec 27, 2023 10:02 pm
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