Getting I2C/TWI working?

Question

There seems to be 3 different libraries that can be used to access TWI: nrf_drv_twi, twi_hw_master, twi_sw_master. (please correct if i am wrong). 
 i am using SDK8.1. Which library is the most stable? 
 Is there any example code i could learn from? 
 thank you.

Susheel Nuguru · Accepted Answer

twi_hw_master : Driver for TWI master that uses TWI hardware in nRF chip 
 twi_sw_master : driver for TWI master that does not use TWI hardware but uses GPIO to bitbang the protocol. 
 both of the above are marked as incubated in SDK8.1 and most probably will be depreciated in the future releases. Marking incubated is the way to tell you that support will be stopped for these modules soon. 
 nrf_drv_twi: New Driver released in SDK8.1 for TWI hardware module for abstracting the TWI hardware in the chip. This module must be used for new development.

Getting I2C/TWI working?

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