95 static void ublox_spp_service_emit_state(ublox_spp_service_t * instance, bool enabled){  in ublox_spp_service_emit_state()  argument
101     little_endian_store_16(event,pos, instance->con_handle);  in ublox_spp_service_emit_state()
103     (*instance->client_packet_handler)(HCI_EVENT_PACKET, 0, event, pos);  in ublox_spp_service_emit_state()
106 static int ublox_spp_service_flow_control_enabled(ublox_spp_service_t * instance){  in ublox_spp_service_flow_control_enabled()  argument
107     return instance->credits_client_configuration_descriptor_value;  in ublox_spp_service_flow_control_enabled()
111     ublox_spp_service_t * instance = &ublox_spp;  in ublox_get_instance_for_con_handle()  local
113     instance->con_handle = con_handle;  in ublox_get_instance_for_con_handle()
114     return instance;  in ublox_get_instance_for_con_handle()
117 static inline void ublox_spp_service_init_credits(ublox_spp_service_t * instance){  in ublox_spp_service_init_credits()  argument
118     instance->incoming_credits = 0;  in ublox_spp_service_init_credits()
119     instance->outgoing_credits = 0;  in ublox_spp_service_init_credits()
120     instance->delta_credits = UBLOX_SPP_MAX_CREDITS;  in ublox_spp_service_init_credits()
126     ublox_spp_service_t * instance = ublox_get_instance_for_con_handle(con_handle);  in ublox_spp_service_read_callback()  local
127     if (!instance) return 0;   in ublox_spp_service_read_callback()
129     if (attribute_handle == instance->fifo_client_configuration_descriptor_handle){  in ublox_spp_service_read_callback()
131             little_endian_store_16(buffer, 0, instance->fifo_client_configuration_descriptor_value);  in ublox_spp_service_read_callback()
136     if (attribute_handle == instance->credits_client_configuration_descriptor_handle){  in ublox_spp_service_read_callback()
138 …        little_endian_store_16(buffer, 0, instance->credits_client_configuration_descriptor_value);  in ublox_spp_service_read_callback()
153     ublox_spp_service_t * instance = ublox_get_instance_for_con_handle(con_handle);  in ublox_spp_service_write_callback()  local
154     if (instance == NULL){  in ublox_spp_service_write_callback()
158     if (attribute_handle == instance->fifo_value_handle){  in ublox_spp_service_write_callback()
159 …instance->client_packet_handler(RFCOMM_DATA_PACKET, (uint16_t) con_handle, &buffer[0], buffer_size…  in ublox_spp_service_write_callback()
160         if (!ublox_spp_service_flow_control_enabled(instance)) return 0;  in ublox_spp_service_write_callback()
161         if (!instance->incoming_credits) return 0;  in ublox_spp_service_write_callback()
162         instance->incoming_credits--;  in ublox_spp_service_write_callback()
163         if (instance->incoming_credits < UBLOX_SPP_CREDITS_THRESHOLD){  in ublox_spp_service_write_callback()
164 …        att_server_request_to_send_notification(&instance->credits_callback, instance->con_handle);  in ublox_spp_service_write_callback()
168     if (attribute_handle == instance->fifo_client_configuration_descriptor_handle){  in ublox_spp_service_write_callback()
172         instance->fifo_client_configuration_descriptor_value = little_endian_read_16(buffer, 0);  in ublox_spp_service_write_callback()
173 …log_info("ublox spp service FIFO control: %d", instance->fifo_client_configuration_descriptor_valu…  in ublox_spp_service_write_callback()
174 …ublox_spp_service_emit_state(instance,  instance->fifo_client_configuration_descriptor_value != 0);  in ublox_spp_service_write_callback()
177     if (attribute_handle == instance->credits_value_handle){  in ublox_spp_service_write_callback()
178         if (!ublox_spp_service_flow_control_enabled(instance)) return 0;  in ublox_spp_service_write_callback()
181         instance->outgoing_credits += credits;  in ublox_spp_service_write_callback()
182         log_info("received outgoing credits, total %d", instance->outgoing_credits);  in ublox_spp_service_write_callback()
184         att_server_request_to_send_notification(&instance->credits_callback, instance->con_handle);  in ublox_spp_service_write_callback()
187         if (instance->request){  in ublox_spp_service_write_callback()
188             btstack_context_callback_registration_t * request = instance->request;  in ublox_spp_service_write_callback()
189             instance->request = NULL;  in ublox_spp_service_write_callback()
190             att_server_request_to_send_notification(request, instance->con_handle);  in ublox_spp_service_write_callback()
194     if (attribute_handle == instance->credits_client_configuration_descriptor_handle){  in ublox_spp_service_write_callback()
198         instance->credits_client_configuration_descriptor_value = little_endian_read_16(buffer, 0);  in ublox_spp_service_write_callback()
199 …log_info("ublox spp service Credits control: %d", instance->credits_client_configuration_descripto…  in ublox_spp_service_write_callback()
200         ublox_spp_service_init_credits(instance);  in ublox_spp_service_write_callback()
207     ublox_spp_service_t * instance = (ublox_spp_service_t *) context;  in ublox_spp_credits_callback()  local
208     if (!instance) return;  in ublox_spp_credits_callback()
210     instance->delta_credits = UBLOX_SPP_MAX_CREDITS - instance->incoming_credits;  in ublox_spp_credits_callback()
211     if (instance->delta_credits){  in ublox_spp_credits_callback()
212         instance->incoming_credits = UBLOX_SPP_MAX_CREDITS;  in ublox_spp_credits_callback()
213 …att_server_notify(instance->con_handle, instance->credits_value_handle, &instance->delta_credits, …  in ublox_spp_credits_callback()
226     ublox_spp_service_t * instance = &ublox_spp;  in ublox_spp_service_server_init()  local
227     instance->client_packet_handler = packet_handler;  in ublox_spp_service_server_init()
229     instance->credits_callback.callback = ublox_spp_credits_callback;  in ublox_spp_service_server_init()
230     instance->credits_callback.context = instance;  in ublox_spp_service_server_init()
231     ublox_spp_service_init_credits(instance);  in ublox_spp_service_server_init()
243 …instance->fifo_value_handle = gatt_server_get_value_handle_for_characteristic_with_uuid128(start_h…  in ublox_spp_service_server_init()
244 …instance->fifo_client_configuration_descriptor_handle = gatt_server_get_client_configuration_handl…  in ublox_spp_service_server_init()
246 …instance->credits_value_handle = gatt_server_get_value_handle_for_characteristic_with_uuid128(star…  in ublox_spp_service_server_init()
247 …instance->credits_client_configuration_descriptor_handle = gatt_server_get_client_configuration_ha…  in ublox_spp_service_server_init()
249     log_info("FIFO        value handle 0x%02x", instance->fifo_value_handle);  in ublox_spp_service_server_init()
250 …log_info("FIFO CCC    value handle 0x%02x", instance->fifo_client_configuration_descriptor_handle);  in ublox_spp_service_server_init()
251     log_info("Credits     value handle 0x%02x", instance->credits_value_handle);  in ublox_spp_service_server_init()
252 …log_info("Credits CCC value handle 0x%02x", instance->credits_client_configuration_descriptor_hand…  in ublox_spp_service_server_init()
268     ublox_spp_service_t * instance = &ublox_spp;  in ublox_spp_service_server_request_can_send_now()  local
269     if (!ublox_spp_service_flow_control_enabled(instance) || instance->outgoing_credits) {  in ublox_spp_service_server_request_can_send_now()
273     instance->request = request;  in ublox_spp_service_server_request_can_send_now()
283     ublox_spp_service_t * instance = &ublox_spp;  in ublox_spp_service_server_send()  local
284     if (ublox_spp_service_flow_control_enabled(instance)){  in ublox_spp_service_server_send()
285         if (instance->outgoing_credits > 0u){  in ublox_spp_service_server_send()
286             instance->outgoing_credits--;  in ublox_spp_service_server_send()
289     return att_server_notify(con_handle, instance->fifo_value_handle, &data[0], size);  in ublox_spp_service_server_send()