Bluetooth Low Energy Connection Parameters for Android, iOS and Win8

Question

I\'ve been looking all over the place for the required bluetooth connection parameters that will work for all three of these operating platforms. I\'m using the HOGP (Bluet

Answer 1

I believe that this characteristic is only meant to provide information to the Central device. That is why it is generally read-only (for me, and cxphong). Bingen's answer does not universally work, and I am not certain it is meant to work that way. Has anybody actually got it to work on a specific device?

It appears that Android and iOS do not consult the information in this read-only characteristic, and so I am not certain that it is very useful.

What works for me is described below, for Cypress peripheral and Android central. A similar approach should work with other devices.

1. On peripheral, define the preferred connection parameters in a CYBLE_GAP_CONN_UPDATE_PARAM_T structure "params".
2. After GATT connection, in CYBLE_EVT_GATT_CONNECT_IND event handler (for example), call CyBle_L2capLeConnectionParamUpdateRequest(connHandle, ¶ms).

On the central side, there is nothing to do. After it receives the request, it will initiate the parameter update a bit later.

Cheers,

David