add wifi channel map configuration option

docs/remotecontrol.md

@@ -111,6 +111,11 @@ Send for example `83` `86` as Downlink on Port 2 to get battery status and time/
 	0 ... 100 percentage of luminosity (100% = full light)
 	e.g. 50 -> 50% of luminosity [default]
 
+#### 0x11 set Wifi scanner channel map bitmask
+
+	bytes 1..2 = wifi channel map bitmask (MSB), 0..8191
+	e.g. 0b1010000001001 sets channels 1, 4, 11, 13
+
 #### 0x13 set user sensor mode
 
 	byte 1 = user sensor number (1..3)

include/globals.h

@@ -66,6 +66,7 @@ typedef struct __attribute__((packed)) {
   uint16_t sleepcycle; // sleep cycle [seconds/10]
   uint16_t wakesync;   // time window [seconds] to sync wakeup on top-of-hour
   uint8_t wifichancycle; // wifi channel switch cycle [seconds/100]
+  uint16_t wifichanmap;  // wifi channel hopping scheme
   uint8_t blescantime;   // BLE scan cycle duration [seconds]
   uint8_t blescan;       // 0=disabled, 1=enabled
   uint8_t wifiscan;      // 0=disabled, 1=enabled

src/configmanager.cpp

@@ -40,6 +40,7 @@ static void defaultConfig(configData_t *myconfig) {
   myconfig->wakesync = SYNCWAKEUP;   // wakeup sync window [seconds]
   myconfig->wifichancycle =
       WIFI_CHANNEL_SWITCH_INTERVAL; // wifi channel switch cycle [seconds/100]
+  myconfig->wifichanmap = WIFI_CHANNEL_MAP; // wifi channel hopping scheme
   myconfig->blescantime =
       BLESCANINTERVAL /
       10; // BT channel scan cycle [seconds/100], default 1 (= 10ms)

src/main.cpp

@@ -282,7 +282,7 @@ void setup() {
   // configure WIFI sniffing
   strcpy(configuration.wifi_my_country_str, WIFI_MY_COUNTRY);
   configuration.wificounter = cfg.wifiscan;
-  configuration.wifi_channel_map = WIFI_CHANNEL_ALL;
+  configuration.wifi_channel_map = cfg.wifichanmap;
   configuration.wifi_channel_switch_interval = cfg.wifichancycle;
   configuration.wifi_rssi_threshold = cfg.rssilimit;
   ESP_LOGI(TAG, "WIFISCAN: %s", cfg.wifiscan ? "on" : "off");

src/paxcounter_orig.conf

@@ -53,6 +53,7 @@
 // WiFi scan parameters
 #define WIFI_MY_COUNTRY                 "01"    // select 2-letter locale for Wifi RF settings, e.g. "DE"; use "01" for world safe mode
 #define	WIFI_CHANNEL_SWITCH_INTERVAL    50      // [seconds/100] -> 0,5 sec.
+#define WIFI_CHANNEL_MAP                WIFI_CHANNEL_ALL  // possible values see libpax_api.h
 
 // LoRa payload default parameters
 #define MEM_LOW                         2048    // [Bytes] low memory threshold triggering a send cycle

src/payload.cpp

@@ -44,6 +44,7 @@ void PayloadConvert::addConfig(configData_t value) {
   buffer[cursor++] = lowByte(value.rssilimit);
   buffer[cursor++] = value.sendcycle;
   buffer[cursor++] = value.wifichancycle;
+  //buffer[cursor++] = value.wifichanmap;
   buffer[cursor++] = value.blescantime;
   buffer[cursor++] = value.blescan;
   buffer[cursor++] = value.wifiant;
@@ -170,6 +171,7 @@ void PayloadConvert::addConfig(configData_t value) {
   writeUint16(value.rssilimit);
   writeUint8(value.sendcycle);
   writeUint8(value.wifichancycle);
+  //writeUint8(value.wifichanmap);
   writeUint8(value.blescantime);
   writeUint16(value.sleepcycle);
   writeBitmap(value.adrmode ? true : false, value.screensaver ? true : false,

src/rcommand.cpp

@@ -106,6 +106,17 @@ void set_wifichancycle(uint8_t val[]) {
   init_libpax();
 }
 
+void set_wifichanmap(uint8_t val[]) {
+  // swap byte order from msb to lsb, note: this is a platform dependent hack
+  cfg.wifichanmap = __builtin_bswap16(*(uint16_t *)(val));
+  libpax_counter_stop();
+  libpax_config_t current_config;
+  libpax_get_current_config(&current_config);
+  current_config.wifi_channel_map = cfg.wifichanmap;
+  libpax_update_config(&current_config);
+  init_libpax();
+}
+
 void set_blescantime(uint8_t val[]) {
   cfg.blescantime = val[0];
   libpax_counter_stop();
@@ -406,15 +417,16 @@ static const cmd_t table[] = {
     {0x0b, set_wifichancycle, 1}, {0x0c, set_blescantime, 1},
     {0x0d, set_wakesync, 2},      {0x0e, set_blescan, 1},
     {0x0f, set_wifiant, 1},       {0x10, set_rgblum, 1},
-    {0x13, set_sensor, 2},        {0x14, set_payloadmask, 1},
-    {0x15, set_bme, 1},           {0x16, set_batt, 1},
-    {0x17, set_wifiscan, 1},      {0x18, set_flush, 0},
-    {0x19, set_sleepcycle, 2},    {0x20, set_loadconfig, 0},
-    {0x21, set_saveconfig, 0},    {0x80, get_config, 0},
-    {0x81, get_status, 0},        {0x83, get_batt, 0},
-    {0x84, get_gps, 0},           {0x85, get_bme, 0},
-    {0x86, get_time, 0},          {0x87, set_timesync, 0},
-    {0x88, set_time, 4},          {0x99, set_flush, 0}};
+    {0x11, set_wifichanmap, 2},   {0x13, set_sensor, 2},
+    {0x14, set_payloadmask, 1},   {0x15, set_bme, 1},
+    {0x16, set_batt, 1},          {0x17, set_wifiscan, 1},
+    {0x18, set_flush, 0},         {0x19, set_sleepcycle, 2},
+    {0x20, set_loadconfig, 0},    {0x21, set_saveconfig, 0},
+    {0x80, get_config, 0},        {0x81, get_status, 0},
+    {0x83, get_batt, 0},          {0x84, get_gps, 0},
+    {0x85, get_bme, 0},           {0x86, get_time, 0},
+    {0x87, set_timesync, 0},      {0x88, set_time, 4},
+    {0x99, set_flush, 0}};
 
 static const uint8_t cmdtablesize =
     sizeof(table) / sizeof(table[0]); // number of commands in command table