RE: How to differentiate between two slave devices connected over same TWI bus.

beemavishnu — Thu, 11 Jul 2019 13:36:00 GMT

Thank you for your inputs.

RE: How to differentiate between two slave devices connected over same TWI bus.

awneil — Mon, 24 Jun 2019 13:31:26 GMT

The Slave Address is what distinguishes devices on the bus.

[quote userid="78085" url="~/f/nordic-q-a/48920/how-to-differentiate-between-two-slave-devices-connected-over-same-twi-bus"]do I need to set a flag to differentiate at application level[/quote]

You can only ever have one transaction in progress at any one time on any one I2C bus - so, when you start the transaction, you need to "remember" which Slave you addressed ...

Or look at the TWI Transaction Manager:

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/lib_nrf_twi_mngr.html