Problem receiving many notifications in the same connection interval

[jpo38]

We designed a BLE device (based on SDK v10.0.0 + SoftDevice S110). From this device we do a few notifications (through sd_ble_gatts_hvx) between two connection intervals.

- When using the « Master Control Panel »

With USB dongle programmed with firmware « Master Emulator nRF51822 v0.10.0 » we observe many data frames receptions per connection interval (same "timestamp")

- When using 0.5.0 win32 driver (within a C++ application)

With the USB dongle programmed with « connectivity_1m_with_s130_1.0.0 » we observe only one data frame reception per connection interval

Could we have done something wrong in our firmware? Or is this a limitation of « connectivity_1m_with_s130_1.0.0 »? Or 0.5.0 win32 driver?

[Petter Myhre]

This is a limitation of the S130 v1.0.0. As a central it is only capable of receiving one notification in each connection interval.

Have a look at Table 43 in Chapter 16 in S130 SoftDevice Specification v1.0, available here.

[jpo38]

Hello Petter and thank you for your reply. Am I dreaming or it's fixed in v2.0?

[Petter Myhre]

You are not dreaming :)

[jpo38]

That's the good new of the day. We'll move to v2.0 then. Thanks!

[jpo38]

@PetterMyhre: Unfortunately, I'm unable to use the dongle once upgraded. Could you help? devzone.nordicsemi.com/.../