RE: Would like to understand maximum concurrent connections for nRF52832 or nRF52840

Martin H. — Wed, 18 Dec 2019 09:49:24 GMT

Hi AndreasF,

I have a follow-up question regarding max-concurrent-connections:

Is it possible to have 20 central-connections + 1 peripheral-connection ?

The following settings dosen`t result in error:

NRF_SDH_BLE_TOTAL_LINK_COUNT 21

NRF_SDH_BLE_CENTRAL_LINK_COUNT 20

NRF_SDH_BLE_PERIPHERAL_LINK_COUNT 0

RE: Would like to understand maximum concurrent connections for nRF52832 or nRF52840

AndreasF — Fri, 11 Jan 2019 11:32:06 GMT

Hi.

During the minimum connection interval, which is 7.5 ms, it is only possible to preprocess, transmit (251-byte packet), and postprocess, 20 times in that connection interval. It is a limitation set by the requirement of pre- and postprocessing time of every packet.

[quote user=""]If Zephr is used for BLE stack, can nRF device have 20+ connections and do you think they are better than Softdevice ?[/quote]

You really have the same issue as with the SoftDevice, it depends on what you wish to do, how much information is transmitted.

Best regards,

Andreas