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multiple I2C devices same ID, simple solution??
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multiple I2C devices same ID, simple solution??

by WinniePough on Thu Sep 24, 2015 10:11 pm

I know that a TCA9548A 1-to-8 I2C multiplexer will allow two I2C devices same ID to be addressed. Will using two digital pins as Exclusive OR at 3.3 volt output used to provide alternate Vcc power create the same effect? Then knowing which I2C is being powered, the output can be steered to the appropriate variable without the need for a TCA9548A 1-to-8 I2C multiplexer. Will this work instead of:
REF: https://learn.adafruit.com/adafruit-tca ... r-breakout ??

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Re: multiple I2C devices same ID, simple solution??

by adafruit_support_bill on Fri Sep 25, 2015 5:45 am

No. Turning off VCC turns the pullups into pulldowns, so nothing on the bus will work.

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