Interfacing (DSI, CSI, I2C, etc.) • SPI latency slow down ADC
hi everyone, I am using ads1263 chip, which is spi ADC. I also have the problem that time from CS to SCLK is too big to slow down whole transform. it is about 20us before the SCLK and about 10us after...
View ArticleRaspberry Pi 400 • Re: No bootup with printer
It's an old HP Laser jet P1006. It has always worked with windows systems. It's only usb & cannot be networked.Does the printer have an SD card slot or USB port for you to plug in a Flash drive?I...
View ArticleInterfacing (DSI, CSI, I2C, etc.) • Re: SPI latency slow down ADC
since I cannot post images here, please see https://github.com/raspberrypi/linux/issues/4567 to get my scope image. thanks in advance.Statistics: Posted by daiyicun — Fri Jan 26, 2024 7:40 am
View ArticleRaspberry Pi OS • Re: Warning from apt-key: Key is stored in legacy...
I've used your proper workaround only to find that the file created was identical to the original one, so what's the meaning of all these steps if mv seems to do the same?Originally that key file had...
View ArticleGeneral discussion • Using GPIO on Pi5 from C/C++
Hello,Could anybody please help what library/tools to use to access the GPIO pins from a C/C++ program?Thank youDanielStatistics: Posted by barna — Fri Jan 26, 2024 7:51 am
View ArticleTroubleshooting • Re: First keypress ignored
It seems the keyboard is the reason. I tried with other keyboard (Logitech) and after reboot the first key was accepted.Statistics: Posted by i486 — Fri Jan 26, 2024 8:04 am
View ArticleBeginners • Re: New 4TB SSD portable drive (USB) critical target error, dev...
What USB to SSD adapter is being used. Please show the output from the lsusb command.There are some USB to SSD adapters that do not work well with Linux.I have used this unit purchased from Amazon...
View ArticleTroubleshooting • Re: SSH over Ethernet directly to PC causes: client_loop:...
If the connection between the Pi and the PC is made by connecting each device directly to the router using seprate ethernet cables, the router will take care of IP assignment and routing. This is the...
View ArticleSDK • Re: ADC PIO 128bit read, DMA gets stuck after 200 transfers
so it was actually because i was using dma_channel_set_read_addr instead of dma_channel_set_write_addr.the fifo fits the 128bits, dma should be fast enough to read it all before the next 128bit read...
View ArticleRaspberry Pi OS • Re: best way to run a bash on startup in Bookworm
Etc\profile has worked fine for me for years for what I need.It no longer works in bookworm as far as I have tried it.This arguing needs to stop. I asked for a solution, I have several to choose from,...
View ArticleRaspberry Pi 400 • Re: RPi400 reboots when UPS hands back to mains supply
Sad to say but the UPS that I am using shuts itself down after running on the battery for 2 hours. I did not know that happened. Tried it without load and also happens, so not load dependent. Trying...
View ArticleGeneral discussion • pi 5 nvme case options?
Hi.I want to buy a pi 5 with an nvme drive board that will fit in a nice case. I don't want to use the official case as i don't like it.The case must be premium looking and cover the whole pi leaving...
View ArticleGeneral discussion • Re: pi 5 nvme case options?
Www.google.comStatistics: Posted by aBUGSworstnightmare — Sat Jan 27, 2024 7:48 am
View ArticleGeneral discussion • Re: Question about nvme and official case
I'm debating it. I find this 'Samsung FIT' drive which claims 200 MB/s fairly fast already.Are you using your pi as a desktop? I want to get a pi 5 but the nvme hats and whether they will fit this...
View ArticleCompute Module • Re: my wish for CM5 module
ive seen a few people that are very clearly not industrial users, that are struggling to do the most basic things with a cm4 and refusing to read any docsand i just have to wonder, why did you even...
View ArticleCompute Module • Re: About screen resolution settings of CM4
I have several small HDMI displays that provide "fake" EDID information and claim to be full 1920x1080 displays but are really something like 720x400. I have to override the EDID value with a custom...
View ArticleTroubleshooting • Re: firstboot: fsck exited with status code 1
If input and output block count from dd write process are not the same the SD is very likely to small.You can also check the SD card size and your image size in bytes. Image must not be bigger if you...
View ArticleGeneral discussion • Re: How can we track system crash report
I believe it will log somewhere before it forcefully shutdown or crash. In other linux they say it will be logged under /var/log/...Statistics: Posted by anoopkalattur.v — Sun Jan 28, 2024 8:14 am
View ArticleGeneral discussion • Re: Raspberry Pi 5 - SSD SATA or SSD NVMe ?
NVME is somewhat faster... enough to be noticeable in desktop use case switching from a Kingston A400 (USB-SATA) to a Pimoroni Base with a Kioxia Exceria.You can double the speed of NVMe by adding...
View ArticleAdvanced users • Re: "Realtime" GPIO with bcm2835...
Are there any example pieces of code which do this which I can look at? Simple ones which just show how this is done, rather than trying to understand this from looking at big pieces of kernel code...
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