nRF51 Peripheral Power Control

[Andrew Lovelock]

The nRF51_reference manual describes the POWER register for the RADIO. Also that when the Power is turned on the Registers are reset. Other peripherals e.g. ECB have POWER registers defined in their data structures in the header file "nRF51.h" but these are not mentioned in the reference manual.

Q1. When turning on the POWER how soon can one write to the RADIO registers?
Q2. Which peripherals like ECB have power control? Q3 Do other peripherals reset their registers when individually powered up? Q4 How soon can one write to their registers? Q5 How soon are they functional?

Thanks

[Håkon Alseth]

Hi,

All peripherals are powered by default (set in the startup file), as there was no added current draw of enabling them. Therefore this POWER-register was removed from the SDK and documentation. Enabling the peripherals and powering them up (via deprecated POWER register) are two different tasks, both timing and current wise. For instance: Starting up the radio will require you to wait for different events

Best regards Håkon