DigitalInfinity/ESP32-PaxCounter
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10s BLE scan time looks enough

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This commit is contained in:
Charles 2018-04-03 11:10:46 +02:00
parent b854f09204
commit 72193b0b3a
3 changed files with 15 additions and 5 deletions
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8
project.cson Normal file
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@ -0,0 +1,8 @@
[
{
title: 'ESP32-Paxcounter'
settings:
'editor.tabLength': 4
'editor.showInvisibles': true
}
]

10
src/macsniff.cpp
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@ -33,6 +33,7 @@ bool mac_add(uint8_t *paddr, int8_t rssi, bool sniff_type) {
uint16_t hashedmac;
std::pair<std::set<uint16_t>::iterator, bool> newmac;
rgb_set_color(COLOR_MAGENTA);
addr2int = ( (uint64_t)paddr[0] ) | ( (uint64_t)paddr[1] << 8 ) | ( (uint64_t)paddr[2] << 16 ) | \
( (uint64_t)paddr[3] << 24 ) | ( (uint64_t)paddr[4] << 32 ) | ( (uint64_t)paddr[5] << 40 );
@ -44,7 +45,7 @@ bool mac_add(uint8_t *paddr, int8_t rssi, bool sniff_type) {
// salt and hash MAC, and if new unique one, store identifier in container and increment counter on display
// https://en.wikipedia.org/wiki/MAC_Address_Anonymization
addr2int |= (uint64_t) salt << 48; // prepend 16-bit salt to 48-bit MAC
snprintf(macbuf, 21, "%llx", addr2int); // convert unsigned 64-bit salted MAC to 16 digit hex string
hashedmac = rokkit(macbuf, 5); // hash MAC string, use 5 chars to fit hash in uint16_t container
@ -57,7 +58,7 @@ bool mac_add(uint8_t *paddr, int8_t rssi, bool sniff_type) {
newmac = bles.insert(hashedmac); // add hashed MAC to BLE container if new unique
strcpy(typebuff, "BLE ");
}
if (newmac.second) { // first time seen this WIFI or BLE MAC
snprintf(counter, 6, "%i", macs.size()); // convert 16-bit MAC counter to decimal counter value
u8x8.draw2x2String(0, 0, counter);
@ -73,6 +74,8 @@ bool mac_add(uint8_t *paddr, int8_t rssi, bool sniff_type) {
}
#endif
rgb_set_color(COLOR_NONE);
// True if MAC WiFi/BLE was new
return newmac.second;
}
@ -129,7 +132,7 @@ void wifi_sniffer_packet_handler(void* buff, wifi_promiscuous_pkt_type_t type) {
const wifi_promiscuous_pkt_t *ppkt = (wifi_promiscuous_pkt_t *)buff;
const wifi_ieee80211_packet_t *ipkt = (wifi_ieee80211_packet_t *)ppkt->payload;
const wifi_ieee80211_mac_hdr_t *hdr = &ipkt->hdr;
if (( cfg.rssilimit == 0 ) || (ppkt->rx_ctrl.rssi > cfg.rssilimit )) { // rssi is negative value
uint8_t *p = (uint8_t *) hdr->addr2;
mac_add(p, ppkt->rx_ctrl.rssi, MAC_SNIFF_WIFI) ;
@ -138,4 +141,3 @@ void wifi_sniffer_packet_handler(void* buff, wifi_promiscuous_pkt_type_t type) {
}
yield();
}

2
src/main.h
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@ -10,7 +10,7 @@
#define BLECOUNTER 1 // comment out if you don't want BLE count
// BLE scan time
#define BLESCANTIME 15 // [seconds]
#define BLESCANTIME 10 // [seconds]
#define BLESCANCYCLE 2 // BLE scan once after each <BLECYCLE> wifi scans
// WiFi Sniffer cycle interval