added WiFi NAN driver

RemoteIDModule/WiFi_TX.cpp

@@ -0,0 +1,61 @@
+/*
+  WiFi NAN driver
+
+  with thanks to https://github.com/sxjack/uav_electronic_ids for WiFi calls
+ */
+
+#include "WiFi_TX.h"
+#include <esp_wifi.h>
+#include <WiFi.h>
+#include <esp_system.h>
+
+bool WiFi_NAN::init(const char *_ssid)
+{
+    int            i;
+    int8_t         wifi_power;
+    wifi_config_t  wifi_config;
+
+    strncpy(ssid, _ssid, sizeof(ssid));
+    ssid[sizeof(ssid)-1] = 0;
+
+    ssid_length = strlen(ssid);
+    WiFi.softAP(ssid, NULL, wifi_channel);
+
+    esp_wifi_get_config(WIFI_IF_AP, &wifi_config);
+  
+    wifi_config.ap.ssid_hidden = 1;
+    esp_err_t status = esp_wifi_set_config(WIFI_IF_AP, &wifi_config);
+
+    // esp_wifi_set_country();
+    status = esp_wifi_set_bandwidth(WIFI_IF_AP,WIFI_BW_HT20);
+
+    // esp_wifi_set_max_tx_power(78);
+    esp_wifi_get_max_tx_power(&wifi_power);
+
+    String address = WiFi.macAddress();
+    status = esp_read_mac(WiFi_mac_addr,ESP_MAC_WIFI_STA);
+
+    return true;
+}
+
+bool WiFi_NAN::transmit(ODID_UAS_Data &UAS_data)
+{
+    int            length;
+    esp_err_t      wifi_status;
+    char           text[128];
+    uint8_t        buffer[1024];
+
+    if ((length = odid_wifi_build_nan_sync_beacon_frame((char *)WiFi_mac_addr,
+                                                        buffer,sizeof(buffer))) > 0) {
+        wifi_status = esp_wifi_80211_tx(WIFI_IF_AP,buffer,length,true);
+    }
+
+    
+    if ((length = odid_wifi_build_message_pack_nan_action_frame(&UAS_data,(char *)WiFi_mac_addr,
+                                                                ++send_counter,
+                                                                buffer,sizeof(buffer))) > 0) {
+        wifi_status = esp_wifi_80211_tx(WIFI_IF_AP,buffer,length,true);
+    }
+
+    return true;
+}

RemoteIDModule/WiFi_TX.h

@@ -0,0 +1,20 @@
+/*
+  WiFi beacon driver
+ */
+#pragma once
+
+#include <Arduino.h>
+#include <opendroneid.h>
+
+class WiFi_NAN {
+public:
+    bool init(const char *ssid);
+    bool transmit(ODID_UAS_Data &UAS_data);
+
+private:
+    char ssid[32];
+    uint8_t WiFi_mac_addr[6];
+    uint8_t wifi_channel = 6;
+    size_t ssid_length;
+    uint8_t send_counter;
+};