The NRF52 product specification (aka, datasheet) has 3 chapters in it all relating to TWI: TWI (chapter 49), TWIM (chapter 33), and TWIS (chapter 34).
Which section (TWI or TWIM) is the correct section for operationg the I2C module in master mode? We spend a significant quantity of time trying to implement it following the TWI chapter, and we almost-sort-of-kind-of got something working. But it looks like we should have been following the TWIM chapter.
Why are there 2 chapters in the datasheet on operating the TWI module in master mode, with conflicting information?