static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
if (packet_type != HCI_EVENT_PACKET) return;
switch (hci_event_packet_get_type(packet)) {
case BTSTACK_EVENT_STATE:
// BTstack activated, get started
if (btstack_event_state_get_state(packet) == HCI_STATE_WORKING){
printf("Start scaning!\n");
gap_set_scan_parameters(0,0x0030, 0x0030);
gap_start_scan();
}
break;
case GAP_EVENT_ADVERTISING_REPORT:{
bd_addr_t address;
gap_event_advertising_report_get_address(packet, address);
uint8_t event_type = gap_event_advertising_report_get_advertising_event_type(packet);
uint8_t address_type = gap_event_advertising_report_get_address_type(packet);
int8_t rssi = gap_event_advertising_report_get_rssi(packet);
uint8_t length = gap_event_advertising_report_get_data_length(packet);
const uint8_t * data = gap_event_advertising_report_get_data(packet);
printf("Advertisement event: evt-type %u, addr-type %u, addr %s, rssi %d, data[%u] ", event_type,
address_type, bd_addr_to_str(address), rssi, length);
printf_hexdump(data, length);
dump_advertisement_data(data, length);
break;
}
default:
break;
}
}
// returns 1 if name is found in advertisement
static int advertisement_report_contains_name(const char * name, uint8_t * advertisement_report){
// get advertisement from report event
const uint8_t * adv_data = gap_event_advertising_report_get_data(advertisement_report);
uint16_t adv_len = gap_event_advertising_report_get_data_length(advertisement_report);
int name_len = strlen(name);
// iterate over advertisement data
ad_context_t context;
for (ad_iterator_init(&context, adv_len, adv_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){
uint8_t data_type = ad_iterator_get_data_type(&context);
uint8_t data_size = ad_iterator_get_data_len(&context);
const uint8_t * data = ad_iterator_get_data(&context);
int i;
switch (data_type){
case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME:
case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME:
// compare common prefix
for (i=0; i<data_size && i<name_len;i++){
if (data[i] != name[i]) break;
}
// prefix match
return 1;
default:
break;
}
}
return 0;
}
static void fill_advertising_report_from_packet(advertising_report_t * adv_report, uint8_t *packet){
gap_event_advertising_report_get_address(packet, adv_report->address);
adv_report->event_type = gap_event_advertising_report_get_advertising_event_type(packet);
adv_report->address_type = gap_event_advertising_report_get_address_type(packet);
adv_report->rssi = gap_event_advertising_report_get_rssi(packet);
adv_report->length = gap_event_advertising_report_get_data_length(packet);
adv_report->data = gap_event_advertising_report_get_data(packet);
}
