How to enable and disable peripheral like twi to save power?

[cgha]

Now with the twi_hw_master.c with softdevice, I enable the twi on the start of twi_master_transfer and disable it at the end of twi_master_transfer, but I found the twi can not transfer data correctly sometime.

[cgha]

I'm using G version 51822 and using twi_hw_master.c from twi-display-5.1.0.c from github. Seems write correct but read sometime fail.

[Hung Bui]

@cgha: Could you point to the github project you used that you get the twi_hw_master.c ? Have you tried the newer SDK ? Do you also use softdevice when testing TWI ?