[riot-notifications] [RIOT-OS/RIOT] cpu/nrf52/periph/i2c (#16680)

Nicolas notifications at github.com
Mon Jul 26 12:13:07 CEST 2021

#### Description

Hello everyone.
After my fix for cpp on the at24cx driver I tried using it in my app which is powered by a NRF52 MCU.

Big problem: the i2C periph of that MCU doesn't like it supports 16-bit register addressing (see:  periph/i2c.c line 172)

Any reason why ?

Also a few lines later: 
> the nrf52's TWI device does not support to do two consecutive transfers
>      * without a repeated start condition in between. So we have to put all data
>      * to be transferred into a temporary buffer

That doesn't seem to be true: 
See this link: 

I could use a use a 2KB AT24C chip but yeah... It's a bit small and ancient =) 

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