michaelh/zephyr
1
0
Fork 0
Code Releases Activity

Bluetooth: GATT: Add support to notify by UUID

Browse source 
This reworks bt_gatt_notify_cb to allow passing an UUID, in addition to
that it can now accept multiple notification at once as there could be
multiple instance of the same UUID the user can set multiple set of
parameters.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Luiz Augusto von Dentz 2019-05-28 12:12:16 +03:00 • committed by Johan Hedberg
commit 648a53d50f
2 changed files with 115 additions and 53 deletions
Download patch file Download diff file Expand all files Collapse all files

54
include/bluetooth/gatt.h
View file

@ -769,24 +769,40 @@ ssize_t bt_gatt_attr_read_cpf(struct bt_conn *conn,
*/
typedef void (*bt_gatt_complete_func_t) (struct bt_conn *conn, void *user_data);
/** @brief Notify attribute value change with callback.
struct bt_gatt_notify_params {
/** Notification Attribute UUID type */
const struct bt_uuid *uuid;
/** Notification Attribute object*/
const struct bt_gatt_attr *attr;
/** Notification Value data */
const void *data;
/** Notification Value length */
u16_t len;
/** Notification Value callback */
bt_gatt_complete_func_t func;
/** Notification Value callback user data */
void *user_data;
};
/** @brief Notify attribute value change.
*
* This function works in the same way as @ref bt_gatt_notify.
* With the addition that after sending the notification the
* callback function will be called.
* callback function will be called and can dispatch multiple
* notifications at once.
* Alternatively it is possible to notify by UUID by setting it on the
* parameters, when using this method the attribute given when be used as the
* start range when looking up for possible matches.
*
* @param conn Connection object.
* @param attr Characteristic or Characteristic Value attribute.
* @param data Pointer to Attribute data.
* @param len Attribute value length.
* @param func Notification value callback.
* @param user_data User data to be passed back to the callback.
* @param num_params Number of Notification parameters.
* @param params Notification parameters.
*
* @return 0 in case of success or negative value in case of error.
*/
int bt_gatt_notify_cb(struct bt_conn *conn, const struct bt_gatt_attr *attr,
const void *data, u16_t len,
bt_gatt_complete_func_t func, void *user_data);
int bt_gatt_notify_cb(struct bt_conn *conn, u16_t num_params,
struct bt_gatt_notify_params *params);
/** @brief Notify attribute value change.
*
@ -794,10 +810,10 @@ int bt_gatt_notify_cb(struct bt_conn *conn, const struct bt_gatt_attr *attr,
* all peer that have notification enabled via CCC otherwise do a direct
* notification only the given connection.
*
* The attribute object can be the so called Characteristic Declaration,
* which is usually declared with BT_GATT_CHARACTERISTIC followed by
* BT_GATT_CCC, or the Characteristic Value Declaration which is automatically
* created after the Characteristic Declaration when using
* The attribute object on the parameters can be the so called Characteristic
* Declaration, which is usually declared with BT_GATT_CHARACTERISTIC followed
* by BT_GATT_CCC, or the Characteristic Value Declaration which is
* automatically created after the Characteristic Declaration when using
* BT_GATT_CHARACTERISTIC.
*
* @param conn Connection object.
@ -811,7 +827,15 @@ static inline int bt_gatt_notify(struct bt_conn *conn,
const struct bt_gatt_attr *attr,
const void *data, u16_t len)
{
return bt_gatt_notify_cb(conn, attr, data, len, NULL, NULL);
struct bt_gatt_notify_params params;
memset(&params, 0, sizeof(params));
params.attr = attr;
params.data = data;
params.len = len;
return bt_gatt_notify_cb(conn, 1, &params);
}
/** @typedef bt_gatt_indicate_func_t