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Bluetooth: GATT: Add bt_gatt_write_response_cb

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This adds bt_gatt_write_response_cb works similarly to
bt_gatt_notify_cb which can take a callback to be called when the PDU
is considered transmitted over the air.

Note: This can also be used to disable the ATT flow control which would
blocks sending multiple commands without wainting their transmissions.

Fixes #11558

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Luiz Augusto von Dentz 2019-01-14 10:55:33 -03:00 • committed by Anas Nashif
commit a779705f16
4 changed files with 53 additions and 23 deletions
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38
include/bluetooth/gatt.h
View file

@ -697,7 +697,7 @@ ssize_t bt_gatt_attr_read_cpf(struct bt_conn *conn,
*
* @param conn Connection object.
*/
typedef void (*bt_gatt_notify_complete_func_t) (struct bt_conn *conn);
typedef void (*bt_gatt_complete_func_t) (struct bt_conn *conn);
/** @brief Notify attribute value change with callback.
*
@ -713,7 +713,7 @@ typedef void (*bt_gatt_notify_complete_func_t) (struct bt_conn *conn);
*/
int bt_gatt_notify_cb(struct bt_conn *conn, const struct bt_gatt_attr *attr,
const void *data, u16_t len,
bt_gatt_notify_complete_func_t func);
bt_gatt_complete_func_t func);
/** @brief Notify attribute value change.
*
@ -999,6 +999,30 @@ struct bt_gatt_write_params {
*/
int bt_gatt_write(struct bt_conn *conn, struct bt_gatt_write_params *params);
/** @brief Write Attribute Value by handle without response with callback.
*
* This function works in the same way as @ref bt_gatt_write_without_response.
* With the addition that after sending the write the callback function will be
* called.
*
* Note: By using a callback it also disable the internal flow control
* which would prevent sending multiple commands without wainting their
* transmissions to complete, so if that is required the caller shall not
* submit more data until the callback is called.
*
* @param conn Connection object.
* @param handle Attribute handle.
* @param data Data to be written.
* @param length Data length.
* @param sign Whether to sign data
* @param func Transmission complete callback.
*
* @return 0 in case of success or negative value in case of error.
*/
int bt_gatt_write_without_response_cb(struct bt_conn *conn, u16_t handle,
const void *data, u16_t length,
bool sign, bt_gatt_complete_func_t func);
/** @brief Write Attribute Value by handle without response
*
* This procedure write the attribute value without requiring an
@ -1012,9 +1036,13 @@ int bt_gatt_write(struct bt_conn *conn, struct bt_gatt_write_params *params);
*
* @return 0 in case of success or negative value in case of error.
*/
int bt_gatt_write_without_response(struct bt_conn *conn, u16_t handle,
const void *data, u16_t length,
bool sign);
static inline int bt_gatt_write_without_response(struct bt_conn *conn,
u16_t handle, const void *data,
u16_t length, bool sign)
{
return bt_gatt_write_without_response_cb(conn, handle, data, length,
sign, NULL);
}
struct bt_gatt_subscribe_params;