Unable to connect to nRF52832 with old phones

RE: Unable to connect to nRF52832 with old phones

bjorn-spockeli — Tue, 18 Jul 2017 13:18:38 GMT

Let me know if that resolves the issue :)

RE: Unable to connect to nRF52832 with old phones

Robert — Tue, 18 Jul 2017 09:52:24 GMT

The problem is that phones with 4.2 dont work with that setting. How can we combine the two of them?

edit: I see Sourabh Barve's comment now. I will try that.

RE: Unable to connect to nRF52832 with old phones

bjorn-spockeli — Tue, 18 Jul 2017 09:34:01 GMT

Yes, as stated in this answer

In SDK 13, a "GATT module" was introduced and is enabled by default. This module enables MTU request and Data Packet Length extension (DLE). For all phones supporting BLE 4.2 and above, the examples in the SDK will work out of the box.

For phones that support BLE 4.0 and/or BLE 4.1 only, MTU request and DLE will not work. In that case, you will have to disable it in the SDK example: all you need to do is to comment out gatt_init().

Thus, commenting out gatt_init() is the correct approach to achieve compatibility with Bluetooth v4.0 devices.

RE: Unable to connect to nRF52832 with old phones

Robert — Tue, 18 Jul 2017 08:24:16 GMT

Sorry it was gatt_init(), it is probably related to: How to make the nRF51 UART Peripheral Example connect/function with the nRF52 UART Central Example

RE: Unable to connect to nRF52832 with old phones

endnode — Tue, 18 Jul 2017 08:14:41 GMT

What is then in your magic gap_init() function?;)