static void handle_gatt_client_event(le_event_t * event) {
uint8_t * packet = (uint8_t*) event;
int connection_encrypted;
// handle connect / disconncet events first
switch (packet[0]) {
case HCI_EVENT_LE_META:
switch (packet[2]) {
case HCI_SUBEVENT_LE_CONNECTION_COMPLETE:
gc_handle = READ_BT_16(packet, 4);
printf("Connection handle 0x%04x, request encryption\n", gc_handle);
// we need to be paired to enable notifications
tc_state = TC_W4_ENCRYPTED_CONNECTION;
sm_send_security_request(gc_handle);
break;
default:
break;
}
return;
case HCI_EVENT_ENCRYPTION_CHANGE:
if (gc_handle != READ_BT_16(packet, 3)) return;
connection_encrypted = packet[5];
log_info("Encryption state change: %u", connection_encrypted);
if (!connection_encrypted) return;
if (tc_state != TC_W4_ENCRYPTED_CONNECTION) return;
// let's start
printf("\nANCS Client - CONNECTED, discover ANCS service\n");
tc_state = TC_W4_SERVICE_RESULT;
gatt_client_discover_primary_services_by_uuid128(gc_id, gc_handle, ancs_service_uuid);
return;
case HCI_EVENT_DISCONNECTION_COMPLETE:
notify_client(ANCS_CLIENT_DISCONNECTED);
return;
default:
break;
}
le_characteristic_t characteristic;
le_characteristic_value_event_t * value_event;
switch(tc_state) {
case TC_W4_SERVICE_RESULT:
switch(event->type) {
case GATT_SERVICE_QUERY_RESULT:
ancs_service = ((le_service_event_t *) event)->service;
ancs_service_found = 1;
break;
case GATT_QUERY_COMPLETE:
if (!ancs_service_found) {
printf("ANCS Service not found");
tc_state = TC_IDLE;
break;
}
tc_state = TC_W4_CHARACTERISTIC_RESULT;
printf("ANCS Client - Discover characteristics for ANCS SERVICE \n");
gatt_client_discover_characteristics_for_service(gc_id, gc_handle, &ancs_service);
break;
default:
break;
}
break;
case TC_W4_CHARACTERISTIC_RESULT:
switch(event->type) {
case GATT_CHARACTERISTIC_QUERY_RESULT:
characteristic = ((le_characteristic_event_t *) event)->characteristic;
if (memcmp(characteristic.uuid128, ancs_notification_source_uuid, 16) == 0) {
printf("ANCS Notification Source Characterisic found\n");
ancs_notification_source_characteristic = characteristic;
ancs_characteristcs++;
break;
}
if (memcmp(characteristic.uuid128, ancs_control_point_uuid, 16) == 0) {
printf("ANCS Control Point found\n");
ancs_control_point_characteristic = characteristic;
ancs_characteristcs++;
break;
}
if (memcmp(characteristic.uuid128, ancs_data_source_uuid, 16) == 0) {
printf("ANCS Data Source Characterisic found\n");
ancs_data_source_characteristic = characteristic;
ancs_characteristcs++;
break;
}
break;
case GATT_QUERY_COMPLETE:
printf("ANCS Characteristcs count %u\n", ancs_characteristcs);
tc_state = TC_W4_NOTIFICATION_SOURCE_SUBSCRIBED;
gatt_client_write_client_characteristic_configuration(gc_id, gc_handle, &ancs_notification_source_characteristic,
GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION);
break;
default:
break;
}
break;
case TC_W4_NOTIFICATION_SOURCE_SUBSCRIBED:
switch(event->type) {
case GATT_QUERY_COMPLETE:
printf("ANCS Notification Source subscribed\n");
tc_state = TC_W4_DATA_SOURCE_SUBSCRIBED;
gatt_client_write_client_characteristic_configuration(gc_id, gc_handle, &ancs_data_source_characteristic,
GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION);
break;
default:
break;
}
break;
case TC_W4_DATA_SOURCE_SUBSCRIBED:
switch(event->type) {
case GATT_QUERY_COMPLETE:
printf("ANCS Data Source subscribed\n");
tc_state = TC_SUBSCRIBED;
notify_client(ANCS_CLIENT_CONNECTED);
break;
default:
break;
}
break;
case TC_SUBSCRIBED:
if ( event->type != GATT_NOTIFICATION && event->type != GATT_INDICATION ) break;
value_event = (le_characteristic_value_event_t *) event;
if (value_event->value_handle == ancs_data_source_characteristic.value_handle) {
int i;
for (i=0; i<value_event->blob_length; i++) {
ancs_chunk_parser_handle_byte(value_event->blob[i]);
}
} else if (value_event->value_handle == ancs_notification_source_characteristic.value_handle) {
ancs_notification_uid = READ_BT_32(value_event->blob, 4);
printf("Notification received: EventID %02x, EventFlags %02x, CategoryID %02x, CategoryCount %u, UID %04x\n",
value_event->blob[0], value_event->blob[1], value_event->blob[2], value_event->blob[3], (int) ancs_notification_uid);
static uint8_t get_notification_attributes[] = {0, 0,0,0,0, 0, 1,32,0, 2,32,0, 3,32,0, 4, 5};
bt_store_32(get_notification_attributes, 1, ancs_notification_uid);
ancs_notification_uid = 0;
ancs_chunk_parser_init();
gatt_client_write_value_of_characteristic(gc_id, gc_handle, ancs_control_point_characteristic.value_handle,
sizeof(get_notification_attributes), get_notification_attributes);
} else {
printf("Unknown Source: ");
printf_hexdump(value_event->blob , value_event->blob_length);
}
break;
default:
break;
}
// app_run();
}
static void handle_hci_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
UNUSED(packet_type);
UNUSED(channel);
UNUSED(size);
int connection_encrypted;
// handle connect / disconncet events first
switch (hci_event_packet_get_type(packet)) {
case HCI_EVENT_LE_META:
switch (packet[2]) {
case HCI_SUBEVENT_LE_CONNECTION_COMPLETE:
gc_handle = little_endian_read_16(packet, 4);
log_info("Connection handle 0x%04x, request encryption", gc_handle);
// we need to be paired to enable notifications
tc_state = TC_W4_ENCRYPTED_CONNECTION;
sm_send_security_request(gc_handle);
break;
default:
break;
}
return;
case HCI_EVENT_ENCRYPTION_CHANGE:
if (gc_handle != little_endian_read_16(packet, 3)) return;
connection_encrypted = packet[5];
log_info("Encryption state change: %u", connection_encrypted);
if (!connection_encrypted) return;
if (tc_state != TC_W4_ENCRYPTED_CONNECTION) return;
// let's start
log_info("\nANCS Client - CONNECTED, discover ANCS service");
tc_state = TC_W4_SERVICE_RESULT;
gatt_client_discover_primary_services_by_uuid128(handle_hci_event, gc_handle, ancs_service_uuid);
return;
case HCI_EVENT_DISCONNECTION_COMPLETE:
if (hci_event_disconnection_complete_get_connection_handle(packet) != gc_handle) break;
if (tc_state == TC_SUBSCRIBED){
notify_client_simple(ANCS_SUBEVENT_CLIENT_DISCONNECTED);
}
tc_state = TC_IDLE;
gc_handle = 0;
return;
default:
break;
}
gatt_client_characteristic_t characteristic;
uint8_t * value;
uint16_t value_handle;
uint16_t value_length;
switch(tc_state){
case TC_W4_SERVICE_RESULT:
switch(hci_event_packet_get_type(packet)){
case GATT_EVENT_SERVICE_QUERY_RESULT:
gatt_event_service_query_result_get_service(packet, &ancs_service);
ancs_service_found = 1;
break;
case GATT_EVENT_QUERY_COMPLETE:
if (!ancs_service_found){
log_info("ANCS Service not found");
tc_state = TC_IDLE;
break;
}
tc_state = TC_W4_CHARACTERISTIC_RESULT;
log_info("ANCS Client - Discover characteristics for ANCS SERVICE ");
gatt_client_discover_characteristics_for_service(handle_hci_event, gc_handle, &ancs_service);
break;
default:
break;
}
break;
case TC_W4_CHARACTERISTIC_RESULT:
switch(hci_event_packet_get_type(packet)){
case GATT_EVENT_CHARACTERISTIC_QUERY_RESULT:
gatt_event_characteristic_query_result_get_characteristic(packet, &characteristic);
if (memcmp(characteristic.uuid128, ancs_notification_source_uuid, 16) == 0){
log_info("ANCS Notification Source found, attribute handle %u", characteristic.value_handle);
ancs_notification_source_characteristic = characteristic;
ancs_characteristcs++;
break;
}
if (memcmp(characteristic.uuid128, ancs_control_point_uuid, 16) == 0){
log_info("ANCS Control Point found, attribute handle %u", characteristic.value_handle);
ancs_control_point_characteristic = characteristic;
ancs_characteristcs++;
break;
}
if (memcmp(characteristic.uuid128, ancs_data_source_uuid, 16) == 0){
log_info("ANCS Data Source found, attribute handle %u", characteristic.value_handle);
ancs_data_source_characteristic = characteristic;
ancs_characteristcs++;
break;
}
break;
case GATT_EVENT_QUERY_COMPLETE:
log_info("ANCS Characteristcs count %u", ancs_characteristcs);
tc_state = TC_W4_NOTIFICATION_SOURCE_SUBSCRIBED;
gatt_client_listen_for_characteristic_value_updates(&ancs_notification_source_notification, &handle_hci_event, gc_handle, &ancs_notification_source_characteristic);
gatt_client_write_client_characteristic_configuration(handle_hci_event, gc_handle, &ancs_notification_source_characteristic,
GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION);
break;
default:
break;
}
break;
case TC_W4_NOTIFICATION_SOURCE_SUBSCRIBED:
switch(hci_event_packet_get_type(packet)){
case GATT_EVENT_QUERY_COMPLETE:
log_info("ANCS Notification Source subscribed");
tc_state = TC_W4_DATA_SOURCE_SUBSCRIBED;
gatt_client_listen_for_characteristic_value_updates(&ancs_data_source_notification, &handle_hci_event, gc_handle, &ancs_data_source_characteristic);
gatt_client_write_client_characteristic_configuration(handle_hci_event, gc_handle, &ancs_data_source_characteristic,
GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION);
break;
default:
break;
}
break;
case TC_W4_DATA_SOURCE_SUBSCRIBED:
switch(hci_event_packet_get_type(packet)){
case GATT_EVENT_QUERY_COMPLETE:
log_info("ANCS Data Source subscribed");
tc_state = TC_SUBSCRIBED;
notify_client_simple(ANCS_SUBEVENT_CLIENT_CONNECTED);
break;
default:
break;
}
break;
case TC_SUBSCRIBED:
if (hci_event_packet_get_type(packet) != GATT_EVENT_NOTIFICATION && hci_event_packet_get_type(packet) != GATT_EVENT_INDICATION ) break;
value_handle = little_endian_read_16(packet, 4);
value_length = little_endian_read_16(packet, 6);
value = &packet[8];
log_info("ANCS Notification, value handle %u", value_handle);
if (value_handle == ancs_data_source_characteristic.value_handle){
int i;
for (i=0;i<value_length;i++) {
ancs_chunk_parser_handle_byte(value[i]);
}
} else if (value_handle == ancs_notification_source_characteristic.value_handle){
ancs_notification_uid = little_endian_read_32(value, 4);
log_info("Notification received: EventID %02x, EventFlags %02x, CategoryID %02x, CategoryCount %u, UID %04x",
value[0], value[1], value[2], value[3], (int) ancs_notification_uid);
static uint8_t get_notification_attributes[] = {0, 0,0,0,0, 0, 1,32,0, 2,32,0, 3,32,0, 4, 5};
little_endian_store_32(get_notification_attributes, 1, ancs_notification_uid);
ancs_notification_uid = 0;
ancs_chunk_parser_init();
gatt_client_write_value_of_characteristic(handle_hci_event, gc_handle, ancs_control_point_characteristic.value_handle,
sizeof(get_notification_attributes), get_notification_attributes);
} else {
log_info("Unknown Source: ");
log_info_hexdump(value , value_length);
}
break;
default:
break;
}
// app_run();
}
