Coexist example does not connect iPhone

RE: Coexist example does not connect iPhone

Mttrinh — Fri, 05 Mar 2021 11:11:49 GMT

Hi,

[quote user="LeeJunhaeng"]If the MAX_MTU_SIZE and DATA_LENGTH do not differ by 4, an error occurs.[/quote]

This seems strange. I don't really have an explanation as to why this is happening. Do you get the same errors when not using those values? Have you tried with other iPhones that are newer than 8(other than the ones you already tried with)? Have you tried with different iOS versions?

RE: Coexist example does not connect iPhone

leejh — Wed, 03 Mar 2021 05:24:19 GMT

Sorry for the late reply.

It has been solved, and I think the problem is the config value.

(Before that, I modified it to iPhone12, not iPhone13)

[in app_config.h]

NRF_SDH_BLE_GATT_MAX_MTU_SIZE 69 --> 247

NRF_SDH_BLE_GAP_DATA_LENGTH 251 --> 251

If the MAX_MTU_SIZE and DATA_LENGTH do not differ by 4, an error occurs.

The above values do not cause an error.

Can you explain to me this situation?

(In addition, Android phones and iPhone 8 under never occur errors. This error occurs only on iPhone8 or later)

RE: Coexist example does not connect iPhone

Mttrinh — Tue, 09 Feb 2021 12:16:33 GMT

Hi,

Just to clarify, you tested as mentioned in the picture for all of the phones mentioned and only iPhone X and iPhone 13 couldn't connect to the device?

[quote user=""]I made a client and server based on sdk-coexist, a basic example provided by Nordic[/quote]

Is this a custom application based on the coexistence example? Or are you using a modified version of the coexistence example? Are you using a DK?