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bluetooth: host: add ability to load CCC settings on demand

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This commits adds a BT_SETTINGS_CCC_LAZY_LOADING option to allow for
CCC settings to be loaded on demand when a peer device connects in
order to reduce memory usage.

Signed-off-by: François Delawarde <fnde@oticon.com>
This commit is contained in:
François Delawarde 2019-11-05 08:20:07 +01:00 • committed by Johan Hedberg
commit a51986616e
3 changed files with 59 additions and 1 deletions
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6
include/bluetooth/gatt.h
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@ -551,7 +551,11 @@ ssize_t bt_gatt_attr_read_chrc(struct bt_conn *conn,
.properties = _props, })), \
BT_GATT_ATTRIBUTE(_uuid, _perm, _read, _write, _value)
#define BT_GATT_CCC_MAX (CONFIG_BT_MAX_PAIRED + CONFIG_BT_MAX_CONN)
#if IS_ENABLED(CONFIG_BT_SETTINGS_CCC_LAZY_LOADING)
#define BT_GATT_CCC_MAX (CONFIG_BT_MAX_CONN)
#else
#define BT_GATT_CCC_MAX (CONFIG_BT_MAX_PAIRED + CONFIG_BT_MAX_CONN)
#endif
/** @brief GATT CCC configuration entry.
* @param id Local identity, BT_ID_DEFAULT in most cases.