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GATT Client: allow to register for any notification/indication and/or any connection

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This commit is contained in:
Matthias Ringwald 2020-03-03 14:27:13 +01:00
parent 7490175edc
commit b3f03c843f
4 changed files with 17 additions and 5 deletions
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5
CHANGELOG.md
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@ -14,6 +14,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
### Changed
## Changes March 2020
### Added
GATT Client: allow to register for any notification/indication and/or any connection
## Changes Februar 2020
### Fixed

10
src/ble/gatt_client.c
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@ -491,7 +491,11 @@ static void emit_event_new(btstack_packet_handler_t callback, uint8_t * packet,
void gatt_client_listen_for_characteristic_value_updates(gatt_client_notification_t * notification, btstack_packet_handler_t packet_handler, hci_con_handle_t con_handle, gatt_client_characteristic_t * characteristic){
notification->callback = packet_handler;
notification->con_handle = con_handle;
notification->attribute_handle = characteristic->value_handle;
if (characteristic == NULL){
notification->attribute_handle = GATT_CLIENT_ANY_VALUE_HANDLE;
} else {
notification->attribute_handle = characteristic->value_handle;
}
btstack_linked_list_add(&gatt_client_value_listeners, (btstack_linked_item_t*) notification);
}
@ -504,8 +508,8 @@ static void emit_event_to_registered_listeners(hci_con_handle_t con_handle, uint
btstack_linked_list_iterator_init(&it, &gatt_client_value_listeners);
while (btstack_linked_list_iterator_has_next(&it)){
gatt_client_notification_t * notification = (gatt_client_notification_t*) btstack_linked_list_iterator_next(&it);
if (notification->con_handle != con_handle) continue;
if (notification->attribute_handle != attribute_handle) continue;
if ((notification->con_handle != GATT_CLIENT_ANY_CONNECTION) && (notification->con_handle != con_handle)) continue;
if ((notification->attribute_handle != GATT_CLIENT_ANY_VALUE_HANDLE) && (notification->attribute_handle != attribute_handle)) continue;
(*notification->callback)(HCI_EVENT_PACKET, 0, packet, size);
}
}

4
src/ble/gatt_client.h
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@ -691,8 +691,8 @@ uint8_t gatt_client_write_client_characteristic_configuration(btstack_packet_han
* @brief Register for notifications and indications of a characteristic enabled by gatt_client_write_client_characteristic_configuration
* @param notification struct used to store registration
* @param callback
* @param con_handle
* @param characteristic
* @param con_handle or GATT_CLIENT_ANY_CONNECTION to receive updates from all connected devices
* @param characteristic or NULL to receive updates for all characteristics
*/
void gatt_client_listen_for_characteristic_value_updates(gatt_client_notification_t * notification, btstack_packet_handler_t callback, hci_con_handle_t con_handle, gatt_client_characteristic_t * characteristic);

3
src/bluetooth.h
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@ -632,6 +632,9 @@ typedef enum {
#define GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION 1
#define GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_INDICATION 2
#define GATT_CLIENT_ANY_CONNECTION 0xffff
#define GATT_CLIENT_ANY_VALUE_HANDLE 0x0000
// GAP Service and Characteristics
#define GAP_SERVICE_UUID 0x1800
#define GAP_DEVICE_NAME_UUID 0x2a00