new feature: rcmd 0x17 wifi sniffer on/off

README.md

@@ -422,6 +422,11 @@ Note: all settings are stored in NVRAM and will be reloaded when device starts.
 	0 = battery data off [default]
 	1 = battery data on, sends voltage on port 8
 
+0x17 set Wifi scanner
+
+	0 = disabled
+	1 = enabled [default]
+
 0x80 get device configuration
 
 	Device answers with it's current configuration on Port 3. 

include/globals.h

@@ -72,6 +72,7 @@ typedef struct {
   uint8_t wifichancycle; // wifi channel switch cycle [seconds/100]
   uint8_t blescantime;   // BLE scan cycle duration [seconds]
   uint8_t blescan;       // 0=disabled, 1=enabled
+  uint8_t wifiscan;      // 0=disabled, 1=enabled
   uint8_t wifiant;       // 0=internal, 1=external (for LoPy/LoPy4)
   uint8_t vendorfilter;  // 0=disabled, 1=enabled
   uint8_t rgblum;        // RGB Led luminosity (0..100%)

include/rcommand.h

@@ -8,6 +8,7 @@
 #include "lorawan.h"
 #endif
 #include "macsniff.h"
+#include "wifiscan.h"
 #include <rom/rtc.h>
 #include "cyclic.h"
 #include "timekeeper.h"

include/wifiscan.h

@@ -8,6 +8,7 @@
 #include "hash.h"
 
 void wifi_sniffer_init(void);
+void switch_wifi_sniffer (uint8_t state);
 static void IRAM_ATTR wifi_sniffer_packet_handler(void *buff, wifi_promiscuous_pkt_type_t type);
 void switchWifiChannel(TimerHandle_t xTimer);
 

platformio.ini

@@ -7,11 +7,11 @@
 
 ; ---> SELECT THE TARGET PLATFORM HERE! <---
 [board]
-halfile = generic.h
+;halfile = generic.h
 ;halfile = ebox.h
 ;halfile = eboxtube.h
 ;halfile = ecopower.h
-;halfile = heltec.h
+halfile = heltec.h
 ;halfile = heltecv2.h
 ;halfile = ttgov1.h
 ;halfile = ttgov2.h
@@ -43,7 +43,7 @@ description = Paxcounter is a device for metering passenger flows in realtime. I
 
 [common]
 ; for release_version use max. 10 chars total, use any decimal format like "a.b.c"
-release_version = 1.9.71
+release_version = 1.9.8
 ; DEBUG LEVEL: For production run set to 0, otherwise device will leak RAM while running!
 ; 0=None, 1=Error, 2=Warn, 3=Info, 4=Debug, 5=Verbose
 debug_level = 3
@@ -51,7 +51,7 @@ extra_scripts = pre:build.py
 otakeyfile = ota.conf
 lorakeyfile = loraconf.h
 lmicconfigfile = lmic_config.h
-platform_espressif32 = espressif32@1.11.0
+platform_espressif32 = espressif32@1.11.1
 monitor_speed = 115200
 upload_speed = 115200
 lib_deps_lora =

src/configmanager.cpp

@@ -29,6 +29,7 @@ void defaultConfig() {
       BLESCANINTERVAL /
       10; // BT channel scan cycle [seconds/100], default 1 (= 10ms)
   cfg.blescan = BLECOUNTER;        // 0=disabled, 1=enabled
+  cfg.wifiscan = WIFICOUNTER;      // 0=disabled, 1=enabled
   cfg.wifiant = 0;                 // 0=internal, 1=external (for LoPy/LoPy4)
   cfg.vendorfilter = VENDORFILTER; // 0=disabled, 1=enabled
   cfg.rgblum = RGBLUMINOSITY;      // RGB Led luminosity (0..100%)
@@ -136,6 +137,10 @@ void saveConfig() {
         flash8 != cfg.blescan)
       nvs_set_i8(my_handle, "blescanmode", cfg.blescan);
 
+    if (nvs_get_i8(my_handle, "wifiscanmode", &flash8) != ESP_OK ||
+        flash8 != cfg.wifiscan)
+      nvs_set_i8(my_handle, "wifiscanmode", cfg.wifiscan);
+
     if (nvs_get_i8(my_handle, "wifiant", &flash8) != ESP_OK ||
         flash8 != cfg.wifiant)
       nvs_set_i8(my_handle, "wifiant", cfg.wifiant);
@@ -321,6 +326,14 @@ void loadConfig() {
       saveConfig();
     }
 
+    if (nvs_get_i8(my_handle, "wifiscanmode", &flash8) == ESP_OK) {
+      cfg.wifiscan = flash8;
+      ESP_LOGI(TAG, "WIFIscanmode = %d", flash8);
+    } else {
+      ESP_LOGI(TAG, "WIFIscanmode set to default %d", cfg.wifiscan);
+      saveConfig();
+    }
+
     if (nvs_get_i16(my_handle, "rssilimit", &flash16) == ESP_OK) {
       cfg.rssilimit = flash16;
       ESP_LOGI(TAG, "rssilimit = %d", flash16);

src/rcommand.cpp

@@ -224,6 +224,13 @@ void set_blescan(uint8_t val[]) {
   }
 }
 
+void set_wifiscan(uint8_t val[]) {
+  ESP_LOGI(TAG, "Remote command: set WIFI scanner to %s",
+           val[0] ? "on" : "off");
+  cfg.wifiscan = val[0] ? 1 : 0;
+  switch_wifi_sniffer(cfg.wifiscan);
+}
+
 void set_wifiant(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: set Wifi antenna to %s",
            val[0] ? "external" : "internal");
@@ -348,10 +355,11 @@ static cmd_t table[] = {
     {0x11, set_monitor, 1, true},       {0x12, set_beacon, 7, false},
     {0x13, set_sensor, 2, true},        {0x14, set_payloadmask, 1, true},
     {0x15, set_bme, 1, true},           {0x16, set_batt, 1, true},
-    {0x80, get_config, 0, false},       {0x81, get_status, 0, false},
-    {0x83, get_batt, 0, false},         {0x84, get_gps, 0, false},
-    {0x85, get_bme, 0, false},          {0x86, get_time, 0, false},
-    {0x87, set_time, 0, false},         {0x99, set_flush, 0, false}};
+    {0x17, set_wifiscan, 1, true},      {0x80, get_config, 0, false},
+    {0x81, get_status, 0, false},       {0x83, get_batt, 0, false},
+    {0x84, get_gps, 0, false},          {0x85, get_bme, 0, false},
+    {0x86, get_time, 0, false},         {0x87, set_time, 0, false},
+    {0x99, set_flush, 0, false}};
 
 static const uint8_t cmdtablesize =
     sizeof(table) / sizeof(table[0]); // number of commands in command table

src/wifiscan.cpp

@@ -29,8 +29,8 @@ typedef struct {
 } wifi_ieee80211_packet_t;
 
 // using IRAM_:ATTR here to speed up callback function
-static IRAM_ATTR void wifi_sniffer_packet_handler(void *buff,
-                                           wifi_promiscuous_pkt_type_t type) {
+static IRAM_ATTR 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 =
@@ -72,7 +72,6 @@ void wifi_sniffer_init(void) {
       esp_wifi_set_storage(WIFI_STORAGE_RAM)); // we don't need NVRAM
   ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_NULL));
   ESP_ERROR_CHECK(esp_wifi_set_ps(WIFI_PS_NONE)); // no modem power saving
-  ESP_ERROR_CHECK(esp_wifi_start()); // must be started to be able to switch ch
   ESP_ERROR_CHECK(esp_wifi_set_promiscuous_filter(&filter)); // set frame filter
   ESP_ERROR_CHECK(esp_wifi_set_promiscuous_rx_cb(&wifi_sniffer_packet_handler));
   ESP_ERROR_CHECK(esp_wifi_set_promiscuous(true)); // now switch on monitor mode
@@ -81,6 +80,19 @@ void wifi_sniffer_init(void) {
   WifiChanTimer =
       xTimerCreate("WifiChannelTimer", pdMS_TO_TICKS(cfg.wifichancycle * 10),
                    pdTRUE, (void *)0, switchWifiChannel);
-  assert(WifiChanTimer);
-  xTimerStart(WifiChanTimer, 0);
+  switch_wifi_sniffer(1);
+}
+
+void switch_wifi_sniffer(uint8_t state) {
+  assert(WifiChanTimer);
+  if ((state ? 1 : 0) == 1) {
+    // switch wifi sniffer on
+    xTimerStart(WifiChanTimer, 0);
+    esp_wifi_set_promiscuous(true);
+  } else {
+    // switch wifi sniffer off
+    xTimerStop(WifiChanTimer, 0);
+    esp_wifi_set_promiscuous(false);
+    macs_wifi = 0; // clear WIFI counter
+  }
 }