how to choose the slave address

RE: how to choose the slave address

Susheel Nuguru — Wed, 28 Nov 2018 09:10:22 GMT

We always recommend you to search the forum first. This sensor has been widely used along with Nordic chip and there are some source codes using it with Nordic chip. Please read this thread and see how they initialize the sensor.

RE: how to choose the slave address

ps_anu — Wed, 28 Nov 2018 09:02:03 GMT

max30205 .... temperature

RE: how to choose the slave address

Susheel Nuguru — Wed, 28 Nov 2018 08:59:34 GMT

I am not sure what you have pasted here. I think you need some help to understand how you the TWI standard works and you also need to understand how you can use it to interact with sensors before trying to find the API from our side to interact with the slave.

In your data sheet for the temperature sensor you should have very detail info on how to communicate with the sensor. Which temperature sensor are you using. Can you give the sensor name and model number for the IC?

RE: how to choose the slave address

ps_anu — Wed, 28 Nov 2018 08:24:49 GMT

but there are different combination ... using scl..sda..vcc ... i dono how to select

SEE THE SAMPLE like this in my datasheet

A0 A1 A2

scl sda vcc 90h

gnd sda vcc 80h

gnd scl sda a3h

RE: how to choose the slave address

Susheel Nuguru — Wed, 28 Nov 2018 07:34:23 GMT

[quote user="saral"]slave device is temperature sensor[/quote]

your temperature sensor will come with its product specification for its model version, which will tell you the exact slave address that needs to be used and how to interact with it (command/response interface).

RE: how to choose the slave address

ps_anu — Tue, 27 Nov 2018 13:39:16 GMT

Hi... susheel ,I need to send the data over ble using i2c .. slave device is temperature sensor ...I dono how to choose the slave address.. there are different combination

RE: how to choose the slave address

Susheel Nuguru — Tue, 27 Nov 2018 12:40:24 GMT

It would help a bit if you could tell us what address your TWI slave has. Maybe attach the spec for the slave device for others to understand what kind of addressing mode it responds to.