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Camera board • Re: Supporting RPI cameras on my custom FPGA board

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I can set the logic level/voltage to 3.3v or 1.8v on my FPGA but my question was: If my FPGA is already 1.8v do I need to translate that to 3.3v because that's what the camera itself expects as an input level (the camera takes 3.3v logic level and converts to 1.8v as we said) or do I just connect it directly?
Ask a hardware engineer to give their opinion. I have no specs on your FPGA board and what it will tolerate. You have the schematics of the V3 camera, so can see what it will be driving into.
Something critical and I2C related that I thought of: is the I2C address of the camera (v3) fixed? And do all v3 cameras for example have the same address? Is there a way to read the I2C address? This user is doing something similar to me, and he had to sniff the address. It looks like the datasheet and documentation do not provide the I2C addresses. If there is a way to read the I2C addresses via an RPI then that's also not an issue, I have one.
That other user was hacking on the legacy closed source camera stack, hence raspivid.
All the configuration and drivers for the camera stack is now in the Linux kernel.

All Raspberry Pi V3 camera modules will be on I2C address 0x1A.
There is an address select pin on the raw Sony sensor to allow selection of address 0x10, but from what I can see it isn't brought out of the module.

Statistics: Posted by 6by9 — Thu Mar 27, 2025 12:01 pm



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