1.) Interval/Timouts only taken from _fast_? 2.) SoftDevice s113 limited to 4dbm TX power on nRF52840?

RE: 1.) Interval/Timouts only taken from _fast_? 2.) SoftDevice s113 limited to 4dbm TX power on nRF52840?

Shahar — Mon, 27 Jul 2020 13:23:38 GMT

I got an updated answer via the RSM where 8db TX is scheduled to be added to S113 and S112 (coming in August 2020).

So this seems more like an error or oversight and less than an actual Flash limitation.

This is based on the fact that 8db capability is purely based on hardware capability - and adding one more value to the switch case of values can't take that much flash space...

RE: 1.) Interval/Timouts only taken from _fast_? 2.) SoftDevice s113 limited to 4dbm TX power on nRF52840?

Simonr — Mon, 27 Jul 2020 07:09:11 GMT

Hi Shahar

Sorry about the delayed reply, but we're in the middle of the summer vacation period here in Norway, and I just got back into the office today. The S113 SoftDevice was designed for the nRF52811 which has a rather limited amount of Flash memory space. Therefore minimizing the Flash memory required by the SoftDevice was prioritized rather than adding support (and this check) for a TX power that the nRF52811 doesn't support.

Best regards,

Simon

RE: 1.) Interval/Timouts only taken from _fast_? 2.) SoftDevice s113 limited to 4dbm TX power on nRF52840?

Shahar — Mon, 13 Jul 2020 22:26:52 GMT

Simonr as the SoftDevice can access register INFO.PART (Address offset 0x100 on the FICR registers) and check for the value of 0x52840 to allow the ability to set the TX power to +8db...

what is the limitation of adding this if/then case to the S113 SoftDevice?

Regarding the S140 suggestion, S140 (AFAIK) does perform this check, as it can run on chips which do not have +8db (like the nRF52811 you mentioned)

RE: 1.) Interval/Timouts only taken from _fast_? 2.) SoftDevice s113 limited to 4dbm TX power on nRF52840?

Simonr — Mon, 09 Dec 2019 10:35:41 GMT

The reason the S113 SoftDevice doesn't support +8dBm TX power is that this SoftDevice supports other devices as well ( the nRF52811 for example), which does not have the HW to support +8dBm TX power. If you need the +8dBm TX power functionality, I suggest using SoftDevice S140 instead.

Best regards,

Simon