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gatt_client: add gatt_client_request_can_write_without_response_event()

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This commit is contained in:
Matthias Ringwald 2018-02-01 15:17:03 +01:00
parent 71af96a130
commit 47181045ae
2 changed files with 33 additions and 4 deletions
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23
src/ble/gatt_client.c
View File

@ -998,10 +998,22 @@ static int gatt_client_run_for_peripheral( gatt_client_t * peripheral){
return 1; return 1;
} }
#endif #endif
default: default:
break; break;
} }
// requested can send snow?
if (peripheral->write_without_response_callback){
btstack_packet_handler_t packet_handler = peripheral->write_without_response_callback;
peripheral->write_without_response_callback = NULL;
uint8_t event[4];
event[0] = GATT_EVENT_CAN_WRITE_WITHOUT_RESPONSE;
event[1] = sizeof(event) - 2;
little_endian_store_16(event, 2, peripheral->con_handle);
packet_handler(HCI_EVENT_PACKET, peripheral->con_handle, event, sizeof(event));
return 1; // to trigger requeueing (even if higher layer didn't sent)
}
return 0; return 0;
} }
@ -1915,3 +1927,12 @@ void gatt_client_send_mtu_negotiation(btstack_packet_handler_t callback, hci_con
gatt_client_run(); gatt_client_run();
} }
} }
uint8_t gatt_client_request_can_write_without_response_event(btstack_packet_handler_t callback, hci_con_handle_t con_handle){
gatt_client_t * context = provide_context_for_conn_handle(con_handle);
if (!context) return BTSTACK_MEMORY_ALLOC_FAILED;
if (context->write_without_response_callback) return GATT_CLIENT_IN_WRONG_STATE;
context->write_without_response_callback = callback;
att_dispatch_client_request_can_send_now_event(context->con_handle);
return 0;
}

14
src/ble/gatt_client.h
View File

@ -138,6 +138,9 @@ typedef struct gatt_client{
// user callback // user callback
btstack_packet_handler_t callback; btstack_packet_handler_t callback;
// can write without response callback
btstack_packet_handler_t write_without_response_callback;
hci_con_handle_t con_handle; hci_con_handle_t con_handle;
uint8_t address_type; uint8_t address_type;
@ -358,6 +361,14 @@ void gatt_client_listen_for_characteristic_value_updates(gatt_client_notificatio
*/ */
void gatt_client_stop_listening_for_characteristic_value_updates(gatt_client_notification_t * notification); void gatt_client_stop_listening_for_characteristic_value_updates(gatt_client_notification_t * notification);
/**
* @brief Requests GATT_EVENT_CAN_WRITE_WITHOUT_RESPONSE that guarantees a single successful gatt_client_write_value_of_characteristic_without_response
* @param packet_handler
* @param con_handle
* @returns status
*/
uint8_t gatt_client_request_can_write_without_response_event(btstack_packet_handler_t callback, hci_con_handle_t con_handle);
/** /**
* @brief -> gatt complete event * @brief -> gatt complete event
*/ */
@ -381,9 +392,6 @@ void gatt_client_deserialize_service(const uint8_t *packet, int offset, gatt_cli
void gatt_client_deserialize_characteristic(const uint8_t * packet, int offset, gatt_client_characteristic_t * characteristic); void gatt_client_deserialize_characteristic(const uint8_t * packet, int offset, gatt_client_characteristic_t * characteristic);
void gatt_client_deserialize_characteristic_descriptor(const uint8_t * packet, int offset, gatt_client_characteristic_descriptor_t * descriptor); void gatt_client_deserialize_characteristic_descriptor(const uint8_t * packet, int offset, gatt_client_characteristic_descriptor_t * descriptor);
// only used for testing
void gatt_client_pts_suppress_mtu_exchange(void);
#if defined __cplusplus #if defined __cplusplus
} }
#endif #endif