Peak power, S132 SoftDevice, concurrent CPU + radio?

RE: Peak power, S132 SoftDevice, concurrent CPU + radio?

Simonr — Mon, 14 Oct 2019 09:13:33 GMT

I see, sorry about the misunderstanding! No, there are no guarantees at all that the SoftDevice will keep the CPU disabled while the radio is active. It is entirely up to your application when the CPU is running, so I can't give you any numbers on how long the CPU and the radio may be running concurrently.

You can read more on the SoftDevice here, and on the CPU in the product specification.

Best regards,

Simon

RE: Peak power, S132 SoftDevice, concurrent CPU + radio?

samsonc — Fri, 11 Oct 2019 18:21:07 GMT

Sorry if I wasn't clear - is it guaranteed by SoftDevice S132 that the SD software will *never* run both the CPU and radio at the same time (i.e. 3.9mA CPU + 5.3mA Radio)? Is the peak power with only the softdevice 27mW (radio + CPU) or is it 16mW (radio only)? If they overlap for some time (maybe the SD firmware has queued a TX request with the radio, and still has to do processing before going to sleep), how long is it?

RE: Peak power, S132 SoftDevice, concurrent CPU + radio?

Simonr — Fri, 11 Oct 2019 11:04:48 GMT

Sorry, but is it correct that you want to know if the radio is able to receive and transmit at the same time? The radio is not able to receive and transmit at the same time, so there should be no worst-case scenario in peak power in that regard. You can check out more information on how the radio in the nRF52 series works over at the Infocenter.

Best regards,

Simon