v1.5.0 to fix the blocking issue in loop()

### Release v1.5.0

1. Fix the blocking issue in loop(). Check [retries block the main loop #18](khoih-prog/WiFiManager_NINA_Lite#18)
2. Configurable `WIFI_RECON_INTERVAL`. Check [retries block the main loop #18](khoih-prog/WiFiManager_NINA_Lite#18 (comment))
3. Update `Packages' Patches`

src/Esp8266_AT_WM_Lite.h

@@ -8,23 +8,24 @@
 
  Built by Khoi Hoang https://github.com/khoih-prog/ESP_AT_WM_Lite
  Licensed under MIT license
- Version: 1.4.1
+ Version: 1.5.0
 
  Version Modified By Date Comments
  ------- ----------- ---------- -----------
  1.0.0 K Hoang 09/03/2020 Initial coding
  1.0.1 K Hoang 20/03/2020 Add feature to enable adding dynamically more Credentials parameters in sketch
  1.0.2 K Hoang 17/04/2020 Fix bug. Add support to SAMD51 and SAMD DUE. WPA2 SSID PW to 63 chars.
- Permit to input special chars such as !,@,#,$,%,^,&,* into data fields.
+  Permit to input special chars such as !,@,#,$,%,^,&,* into data fields.
  1.0.3 K Hoang 11/06/2020 Add support to nRF52 boards, such as AdaFruit Feather nRF52832, NINA_B30_ublox, etc.
- Add DRD support. Add MultiWiFi support 
+  Add DRD support. Add MultiWiFi support 
  1.0.4 K Hoang 03/07/2020 Add support to ESP32-AT shields. Modify LOAD_DEFAULT_CONFIG_DATA logic.
- Enhance MultiWiFi connection logic. Fix WiFi Status bug.
+  Enhance MultiWiFi connection logic. Fix WiFi Status bug.
  1.1.0 K Hoang 13/04/2021 Fix invalid "blank" Config Data treated as Valid. Optional one set of WiFi Credentials
  1.2.0 Michael H 28/04/2021 Enable scan of WiFi networks for selection in Configuration Portal
  1.3.0 K Hoang 12/05/2021 Add support to RASPBERRY_PI_PICO using Arduino-pico core
  1.4.0 K Hoang 01/06/2021 Add support to Nano_RP2040_Connect, RASPBERRY_PI_PICO using RP2040 Arduino mbed core 
- 1.4.1 K Hoang 10/10/2021 Update `platform.ini` and `library.json` 
+ 1.4.1 K Hoang 10/10/2021 Update `platform.ini` and `library.json`
+ 1.5.0 K Hoang 08/01/2022 Fix the blocking issue in loop() with configurable WIFI_RECON_INTERVAL
  ***************************************************************************************************************************************/
 
 #ifndef Esp8266_AT_WM_Lite_h
@@ -38,7 +39,7 @@
  #error This code is intended to run on the Mega2560 platform! Please check your Tools->Board setting.
 #endif
 
-#define ESP_AT_WM_LITE_VERSION "ESP_AT_WM_Lite v1.4.1"
+#define ESP_AT_WM_LITE_VERSION "ESP_AT_WM_Lite v1.5.0"
 
 #define DEFAULT_BOARD_NAME "AVR-MEGA"
 
@@ -295,6 +296,16 @@ class ESP_AT_WiFiManager_Lite
 
  //////////////////////////////////////////////
 
+#if !defined(WIFI_RECON_INTERVAL) 
+ #define WIFI_RECON_INTERVAL 0 // default 0s between reconnecting WiFi
+#else
+ #if (WIFI_RECON_INTERVAL < 0)
+ #define WIFI_RECON_INTERVAL 0
+ #elif (WIFI_RECON_INTERVAL > 600000)
+ #define WIFI_RECON_INTERVAL 600000 // Max 10min
+ #endif
+#endif
+
  void run()
  {
  static int retryTimes = 0;
@@ -306,15 +317,19 @@ class ESP_AT_WiFiManager_Lite
  static unsigned long checkstatus_timeout = 0;
  #define WIFI_STATUS_CHECK_INTERVAL 5000L
 
+ static uint32_t curMillis;
+
+ curMillis = millis();
+
  //// New DRD ////
  // Call the double reset detector loop method every so often,
  // so that it can recognise when the timeout expires.
  // You can also call drd.stop() when you wish to no longer
  // consider the next reset as a double reset.
  drd->loop();
  //// New DRD ////
-
- if ( !configuration_mode && (millis() > checkstatus_timeout) )
+ 
+ if ( !configuration_mode && (curMillis > checkstatus_timeout) )
  { 
  if (WiFi.status() == WL_CONNECTED)
  {
@@ -326,16 +341,16 @@ class ESP_AT_WiFiManager_Lite
  {
  wifiDisconnectedOnce = false;
  wifi_connected = false;
- ESP_AT_LOGDEBUG(F("r:Check&WLost"));
+ ESP_AT_LOGERROR(F("r:Check&WLost"));
  }
  else
  {
  wifiDisconnectedOnce = true;
  }
  }
 
- checkstatus_timeout = millis() + WIFI_STATUS_CHECK_INTERVAL;
- } 
+ checkstatus_timeout = curMillis + WIFI_STATUS_CHECK_INTERVAL;
+ }  
 
  // Lost connection in running. Give chance to reconfig.
  if ( !wifi_connected )
@@ -348,7 +363,7 @@ class ESP_AT_WiFiManager_Lite
 
  if (server)
  {
- //ESP_AT_LOGDEBUG(F("r:hC")); 
+ //ESP_AT_LOGDEBUG(F("r:handleClient"));
  server->handleClient();
  }
 
@@ -363,7 +378,7 @@ class ESP_AT_WiFiManager_Lite
  {
  if (++retryTimes <= CONFIG_TIMEOUT_RETRYTIMES_BEFORE_RESET)
  {
- ESP_AT_LOGDEBUG1(F("r:Wlost&TOut.ConW.Retry#"), retryTimes);
+ ESP_AT_LOGERROR1(F("r:WLost&TOut.ConW.Retry#"), retryTimes);
  }
  else
  {
@@ -375,18 +390,38 @@ class ESP_AT_WiFiManager_Lite
  // Not in config mode, try reconnecting before forcing to config mode
  if ( !wifi_connected )
  {
- ESP_AT_LOGDEBUG(F("r:Wlost.ReconW"));
+
+
+#if (WIFI_RECON_INTERVAL > 0)
+
+ static uint32_t lastMillis = 0;
+
+ if ( (lastMillis == 0) || (curMillis - lastMillis) > WIFI_RECON_INTERVAL )
+ {
+ lastMillis = curMillis;
+
+ ESP_AT_LOGERROR(F("r:WLost.ReconW"));
+
+ if (connectToWifi(RETRY_TIMES_RECONNECT_WIFI))
+ {
+ ESP_AT_LOGERROR(F("r:WOK"));
+ }
+ }
+#else
+ ESP_AT_LOGERROR(F("r:WLost.ReconW"));
+
  if (connectToWifi(RETRY_TIMES_RECONNECT_WIFI))
  {
- ESP_AT_LOGDEBUG(F("r:WOK"));
+ ESP_AT_LOGERROR(F("r:WOK"));
  }
+#endif 
  }
  }
  }
  else if (configuration_mode)
  {
  configuration_mode = false;
- ESP_AT_LOGDEBUG(F("r:gotWBack"));
+ ESP_AT_LOGERROR(F("r:gotWBack"));
  }
  }
 
@@ -984,8 +1019,18 @@ class ESP_AT_WiFiManager_Lite
  }
 
  //////////////////////////////////////////////
+
+// Max times to try WiFi per loop() iteration. To avoid blocking issue in loop()
+// Default 1 and minimum 1.
+#if !defined(MAX_NUM_WIFI_RECON_TRIES_PER_LOOP) 
+ #define MAX_NUM_WIFI_RECON_TRIES_PER_LOOP 1
+#else
+ #if (MAX_NUM_WIFI_RECON_TRIES_PER_LOOP < 1) 
+ #define MAX_NUM_WIFI_RECON_TRIES_PER_LOOP 1
+ #endif
+#endif 
 
-// New connection logic for ESP32-AT from v1.0.6
+ // New connection logic for ESP32-AT from v1.0.6
  bool connectToWifi(int retry_time)
  {
  int sleep_time = 250;
@@ -1000,8 +1045,10 @@ class ESP_AT_WiFiManager_Lite
  }
 
  ESP_AT_LOGDEBUG3(F("con2WF:SSID="), ESP8266_AT_config.wifi_ssid, F(",PW="), ESP8266_AT_config.wifi_pw);
+
+ uint8_t numWiFiReconTries = 0;
 
- while ( !wifi_connected && ( 0 < retry_time ) )
+ while ( !wifi_connected && ( 0 < retry_time ) && (numWiFiReconTries++ < MAX_NUM_WIFI_RECON_TRIES_PER_LOOP) )
  { 
  ESP_AT_LOGDEBUG1(F("Remaining retry_time="), retry_time);