how to establish a communication through i2c with some devices?what are the functios used for reading and writing from the slave?

[Naveenkumar]

explain these things

[Kenneth]

Hi,

Maybe you can refer to the documentation:

TWI Driver: http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.0.0/hardware_driver_twi.html?cp=4_0_0_2_0_17 

TWI Manager: http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.0.0/lib_nrf_twi_mngr.html?cp=4_0_0_3_50 

Examples:

TWI Scanner: http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.0.0/twi_scanner_example.html?cp=4_0_0_4_5_41 

TWI Sensor: http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.0.0/twi_sensor_example.html?cp=4_0_0_4_5_42 

TWI Manager: http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.0.0/twi_transaction_mgr_example.html?cp=4_0_0_4_5_43 

For the physcial interface you should have a pull up (for instance 10kohm) on the two serial lines between sensor and nRF52832. You need to connect SCL and SDA, in addition GND and VDD.

Best regards,
Kenneth