EATT manual connection & multiple channels initial support #2055
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Introduce BLE_EATT_AUTO_CONNECT syscfg option to allow manual EATT connection setup Introduce a configurable limit for maximum number of L2CAP channels per connection
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Extend ble_eatt struct with channel array and channel count. Add helper functions for channel indexing and lookup. Update ble_eatt_find to search all channels for matching CID. Add channel allocation logic on connect event. Replace direct channel access with indexed lookup. Refactor ble_eatt_tx and L2CAP ev-handler to support multiple channels.
Introduce ble_eatt_connect() API to allow manual setup EATT. This change enables explicit control over EATT channel creation. The function validates the connection handle and requested channel count, supports requesting all channels by passing 0 Add declaration of ble_eatt_connect() to the ble_att.h header.
Introduc a new shell command `gatt_eatt_connect` to allow manual connection of multiple EATT channels per connection. The command parses the connection handle and requested number of channels, displays basic usage help, and calls the internal `ble_eatt_connect()` API. Register the command in the shell, add parameter descriptions and declaration in `cmd_gatt.h`.
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New syscfg options for multiple EATT channels.
Introduce multiple channels to
ble_eattstructure.Add new API function for connecting EATT on demand.
Add new shell command for manually connecting EATT channels.