ESP32-PaxCounter/include/wifiscan.h

#ifndef _WIFISCAN_H
#define _WIFISCAN_H

// ESP32 Functions
#include <esp_wifi.h>

// Hash function for scrambling MAC addresses
#include "hash.h"

#define MAC_SNIFF_WIFI 0
#define MAC_SNIFF_BLE 1

typedef struct {
  unsigned frame_ctrl : 16;
  unsigned duration_id : 16;
  uint8_t addr1[6]; /* receiver address */
  uint8_t addr2[6]; /* sender address */
  uint8_t addr3[6]; /* filtering address */
  unsigned sequence_ctrl : 16;
  uint8_t addr4[6]; /* optional */
} wifi_ieee80211_mac_hdr_t;

typedef struct {
  wifi_ieee80211_mac_hdr_t hdr;
  uint8_t payload[0]; /* network data ended with 4 bytes csum (CRC32) */
} wifi_ieee80211_packet_t;

void wifi_sniffer_init(void);
void IRAM_ATTR wifi_sniffer_packet_handler(void *buff, wifi_promiscuous_pkt_type_t type);
void switchWifiChannel(void * parameter);

#endif