Shouldn't the OAK-D CM4 PoE's Raspi be a 64bit instead of a 32bit system?

StefanWerner

Hi, I have an OAK-D CM4 PoE device. According to the specifications of the Raspberry Compute Module 4, it should have an ARM Cortex-A72 (64bit instruction set). When I check /proc/cpuinfo, however, I get ARMv7 Processor rev 3 (v7l)instead of ARMv8. Why does it tell me that the raspi is a 32bit system, when it should be a 64bit system?

Is it because the device runs a 32bit Raspi OS on a 64bit system? If so, can I change the OS version? Does Luxonis provide a 64bit Raspi OS with the depthai firmware?

erik

Hi StefanWerner ,
You are correct, it's because it's a 32bit RPi OS, as the image was confiured last year, when 64bit RPi OS wasn't released yet (I believe it was alpha/prerelease, and there were some issues). You can install 64bit OS and just install depthai to it though (https://docs.luxonis.com/projects/api/en/latest/install/)

StefanWerner

Hi @erik , thanks for your response!

So it should be enough to install the 64bit Raspi OS and then install the depthai dependencies as follows?

sudo curl -fL https://docs.luxonis.com/install_dependencies.sh | bash

Have you tried if the Raspi64 bit OS works fine with depthai?

Are you planning to release a pre-build 64bit Raspi image?

jakaskerl

Hi StefanWerner
Installing the dependencies should be enough to get it running, yes. Also make sure to install the requirements for python.
The 64 bit OS should theoretically work fine with depthai; but I'm not sure whether it was tested before. Let us know if you run into any issues.

Thanks,
Jaka

StefanWerner

Hi @jakaskerl and @erik, how would I go about flashing the OS without an SSD card?

I've found the instructions here, but am unsure what the bootloader does exactly.

erik

Hi StefanWerner ,
To flash OS on RPi's EMMC memory I'd suggest following this guide:
https://docs.luxonis.com/projects/hardware/en/latest/pages/guides/raspberrypi/#flashing-an-image-to-the-emmc
Bootloader that you've linked is for oak devices that don't have RPi integrated.
Thanks, Erik