BLE low power mode and settings optimization (#902)

* BLE low power mode and settings optimization
-low power mode settings example
-take into account parameters following #891
-add esp32dev-ble-cont for door/window sensor listening

* Disable WDT during scan

* update esp32 arduino framework

platformio.ini

@@ -40,6 +40,7 @@ extra_configs =
 ;default_envs = esp32dev-weatherstation
 ;default_envs = esp32dev-ir
 ;default_envs = esp32dev-ble
+;default_envs = esp32dev-ble-cont
 ;default_envs = esp32feather-ble
 ;default_envs = esp32-lolin32lite-ble
 ;default_envs = esp32-olimex-gtw-ble-eth
@@ -135,7 +136,7 @@ monitor_speed = 115200
 
 [com]
 esp8266_platform = espressif8266@2.6.3
-esp32_platform = espressif32@3.0.0
+esp32_platform = espressif32@3.1.1
 atmelavr_platform = atmelavr@3.2.0
 
 [com-esp]
@@ -338,6 +339,23 @@ build_flags =
   '-DLED_RECEIVE_ON=0'
   '-DGateway_Name="OpenMQTTGateway_ESP32_BLE"'
 
+[env:esp32dev-ble-cont]
+platform = ${com.esp32_platform}
+board = esp32dev
+board_build.partitions = min_spiffs.csv
+lib_deps =
+  ${com-esp.lib_deps}
+  ${libraries.ble}
+build_flags =
+  ${com-esp.build_flags}
+  '-DZgatewayBT="BT"'
+  '-DLED_RECEIVE=2'
+  '-DLED_RECEIVE_ON=0'
+  '-DGateway_Name="OpenMQTTGateway_ESP32_BLE_C"'
+  '-DTimeBtwRead=0'
+  '-DScan_duration=1000'
+  '-DAttemptBLECOnnect=false'
+
 [env:esp32feather-ble]
 platform = ${com.esp32_platform}
 board = featheresp32
@@ -365,6 +383,17 @@ build_flags =
   '-DLED_RECEIVE=22'
   '-DLED_RECEIVE_ON=0'
   '-DGateway_Name="OpenMQTTGateway_LOLIN32LITE_BLE"'
+;; Low power parameters, uncomment and fill credentials
+;  '-DDEFAULT_LOW_POWER_MODE=0'
+;  '-DTimeBtwRead=550000'
+;  '-DAttemptBLECOnnect=false'
+;  '-DActiveBLEScan=false'
+;  '-DESPWifiManualSetup=true'
+;  '-DMQTT_USER="lolin-esp32"'
+;  '-DMQTT_PASS="your_password"'
+;  '-DMQTT_SERVER="192.168.1.17"'
+;  '-Dwifi_ssid="WIFI_SSID"'
+;  '-Dwifi_password="WIFI_PASSWORD"'
 
 [env:esp32-olimex-gtw-ble-eth]
 platform = ${com.esp32_platform}
@@ -535,6 +564,7 @@ build_flags =
 # https://www.thethingsnetwork.org/forum/t/big-esp32-sx127x-topic-part-3/18436
 platform = ${com.esp32_platform}
 board = ttgo-t-beam
+board_build.partitions = min_spiffs.csv
 lib_deps =
   ${com-esp.lib_deps}
   ${libraries.ble}