Raspberry Pi 4 Model B (I2C Range)

May 10, 2024, 12:56

pandorakim

I'm trying to connect 125 units of ATTiny85 and I am not sure if it works within the available I2C address. Where can I check the starting address and the end address? I wanted to know if it will fit all of it. If it doesnt start at address 0 or 1, what address that it starts? Or is there anyway I can change the pre-reserved starting address? maybe change some config?

oops.se

There is excellent datasheets that explains the 7-bit vs 10-bit addressing quite good, https://www.nxp.com/docs/en/user-guide/UM10204.pdf

pandorakim

Thank you very much

pandorakim


pandorakim

so RPi 4B starts the address at 3, are there are methods i could start at 0 or 1?