search

rgoulter / keyboard-labs

Repo with my PCB designs and keyboard firmware
121 stars 11 forks source link

Can I2C external EEPROM be used at the same pin with the OLED on Blackpill? #5

Closed vinhcatba closed 1 year ago

vinhcatba commented 1 year ago

I am wondering if the 2 I2C devices (OLED and EEPROM) can share the same pin on STM32F401 Blackpill without any problem?

rgoulter commented 1 year ago

Easiest way to check would be to get a breadboard & maybe some breakout boards for the components you want to check.

If you have to ask, you're probably going to make a mistake; and it's better to make a mistake with a breadboard (where it's easy to change things) than with a PCB using a devboard.

rgoulter commented 1 year ago

Anyway, I would think that I2C would be able to work with multiple devices from the same pin, so long as those devices don't conflict on what address they use, IIRC.

vinhcatba commented 1 year ago

thanks, I will test with breadboard ASA my Blackpill arrives.