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Bluetooth: GATT: Add initializer for GATT CCC

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Add GATT initializer macro for GATT CCC and allow the
BT_GATT_CCC_MANAGED to accept an already initialized CCC user data.
This allows the application to specify the storage location of the CCC
user data.

Signed-off-by: Joakim Andersson <joakim.andersson@nordicsemi.no>
This commit is contained in:
Joakim Andersson 2019-09-18 17:32:15 +02:00 • committed by Carles Cufí
commit ff2bd93eea
2 changed files with 35 additions and 16 deletions
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41
include/bluetooth/gatt.h
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@ -617,24 +617,36 @@ ssize_t bt_gatt_attr_write_ccc(struct bt_conn *conn,
const struct bt_gatt_attr *attr, const void *buf,
u16_t len, u16_t offset, u8_t flags);
/** @def BT_GATT_CCC_MANAGED
* @brief Managed Client Characteristic Configuration Declaration Macro.
/** @def BT_GATT_CCC_INITIALIZER
* @brief Initialize Client Characteristic Configuration Declaration Macro.
*
* Helper macro to declare a Managed CCC attribute.
* Helper macro to initialize a Managed CCC attribute value.
*
* @param _changed Configuration changed callback.
* @param _write Configuration write callback.
* @param _match Configuration match callback.
*/
#define BT_GATT_CCC_MANAGED(_changed, _write, _match) \
BT_GATT_ATTRIBUTE(BT_UUID_GATT_CCC, \
BT_GATT_PERM_READ | BT_GATT_PERM_WRITE, \
bt_gatt_attr_read_ccc, bt_gatt_attr_write_ccc, \
(&(struct _bt_gatt_ccc) { \
.cfg = {}, \
.cfg_changed = _changed, \
.cfg_write = _write, \
.cfg_match = _match }))
#define BT_GATT_CCC_INITIALIZER(_changed, _write, _match) \
{ \
.cfg = {}, \
.cfg_changed = _changed, \
.cfg_write = _write, \
.cfg_match = _match, \
}
/** @def BT_GATT_CCC_MANAGED
* @brief Managed Client Characteristic Configuration Declaration Macro.
*
* Helper macro to declare a Managed CCC attribute.
*
* @param _ccc CCC attribute user data, shall point to a _bt_gatt_ccc.
*/
#define BT_GATT_CCC_MANAGED(_ccc) \
BT_GATT_ATTRIBUTE(BT_UUID_GATT_CCC, \
BT_GATT_PERM_READ | BT_GATT_PERM_WRITE, \
bt_gatt_attr_read_ccc, bt_gatt_attr_write_ccc, \
_ccc)
/** @def BT_GATT_CCC
* @brief Client Characteristic Configuration Declaration Macro.
@ -643,8 +655,9 @@ ssize_t bt_gatt_attr_write_ccc(struct bt_conn *conn,
*
* @param _cfg_changed Configuration changed callback.
*/
#define BT_GATT_CCC(_cfg_changed) \
BT_GATT_CCC_MANAGED(_cfg_changed, NULL, NULL)
#define BT_GATT_CCC(_cfg_changed) \
BT_GATT_CCC_MANAGED((&(struct _bt_gatt_ccc) \
BT_GATT_CCC_INITIALIZER(_cfg_changed, NULL, NULL)))
/** @brief Read Characteristic Extended Properties Attribute helper
*