Update to platformio core 4.0.0

Update to platformio core 4.0.0

platformio.ini

@@ -9,36 +9,37 @@
 
 [platformio]
 src_dir = sonoff
+build_dir = .pioenvs
 
 ; *** Uncomment one of the lines below to build/upload only one environment
-;env_default = sonoff
+;default_envs = sonoff
-;env_default = sonoff-minimal
+;default_envs = sonoff-minimal
-;env_default = sonoff-basic
+;default_envs = sonoff-basic
-;env_default = sonoff-classic
+;default_envs = sonoff-classic
-;env_default = sonoff-knx
+;default_envs = sonoff-knx
-;env_default = sonoff-sensors
+;default_envs = sonoff-sensors
-;env_default = sonoff-display
+;default_envs = sonoff-display
-;env_default = sonoff-BG
+;default_envs = sonoff-BG
-;env_default = sonoff-BR
+;default_envs = sonoff-BR
-;env_default = sonoff-CN
+;default_envs = sonoff-CN
-;env_default = sonoff-CZ
+;default_envs = sonoff-CZ
-;env_default = sonoff-DE
+;default_envs = sonoff-DE
-;env_default = sonoff-ES
+;default_envs = sonoff-ES
-;env_default = sonoff-FR
+;default_envs = sonoff-FR
-;env_default = sonoff-GR
+;default_envs = sonoff-GR
-;env_default = sonoff-HE
+;default_envs = sonoff-HE
-;env_default = sonoff-HU
+;default_envs = sonoff-HU
-;env_default = sonoff-IT
+;default_envs = sonoff-IT
-;env_default = sonoff-KO
+;default_envs = sonoff-KO
-;env_default = sonoff-NL
+;default_envs = sonoff-NL
-;env_default = sonoff-PL
+;default_envs = sonoff-PL
-;env_default = sonoff-PT
+;default_envs = sonoff-PT
-;env_default = sonoff-RU
+;default_envs = sonoff-RU
-;env_default = sonoff-SE
+;default_envs = sonoff-SE
-;env_default = sonoff-SK
+;default_envs = sonoff-SK
-;env_default = sonoff-TR
+;default_envs = sonoff-TR
-;env_default = sonoff-TW
+;default_envs = sonoff-TW
-;env_default = sonoff-UK
+;default_envs = sonoff-UK
 
 [esp82xx_defaults]
 build_flags               = -D NDEBUG
@@ -99,8 +100,10 @@ build_flags               = ${esp82xx_defaults.build_flags}
 ; Code optimization see https://github.com/esp8266/Arduino/issues/5790#issuecomment-475672473
                             -O2
                             -DBEARSSL_SSL_BASIC
+; nonos-sdk 22y
+                            -DPIO_FRAMEWORK_ARDUINO_ESPRESSIF_SDK22y
 ; nonos-sdk 22x
-                            -DPIO_FRAMEWORK_ARDUINO_ESPRESSIF_SDK22x
+;                            -DPIO_FRAMEWORK_ARDUINO_ESPRESSIF_SDK22x
 ; nonos-sdk-pre-v3
 ;                            -DPIO_FRAMEWORK_ARDUINO_ESPRESSIF_SDK3
 ; lwIP 1.4
@@ -127,6 +130,43 @@ build_flags               = ${esp82xx_defaults.build_flags}
 ;                           -fexceptions
 ;                           -lstdc++-exc
 
+[core_pre]
+; *** Arduino Esp8266 core pre 2.6.x for Tasmota (mqtt reconnects fixed)
+platform                  = https://github.com/Jason2866/platform-espressif8266.git#Tasmota
+build_flags               = ${esp82xx_defaults.build_flags}
+                            -Wl,-Tesp8266.flash.1m.ld
+                            -O2
+                            -DBEARSSL_SSL_BASIC
+; nonos-sdk 22y
+                            -DPIO_FRAMEWORK_ARDUINO_ESPRESSIF_SDK22y
+; nonos-sdk 22x
+;                            -DPIO_FRAMEWORK_ARDUINO_ESPRESSIF_SDK22x
+; nonos-sdk-pre-v3
+;                            -DPIO_FRAMEWORK_ARDUINO_ESPRESSIF_SDK3
+; lwIP 1.4
+;                            -DPIO_FRAMEWORK_ARDUINO_LWIP_HIGHER_BANDWIDTH
+; lwIP 2 - Low Memory
+;                            -DPIO_FRAMEWORK_ARDUINO_LWIP2_LOW_MEMORY
+; lwIP 2 - Higher Bandwidth
+;                            -DPIO_FRAMEWORK_ARDUINO_LWIP2_HIGHER_BANDWIDTH
+; lwIP 2 - Higher Bandwitdh Low Memory no Features
+;                            -DPIO_FRAMEWORK_ARDUINO_LWIP2_LOW_MEMORY_LOW_FLASH
+; lwIP 2 - Higher Bandwitdh no Features
+                            -DPIO_FRAMEWORK_ARDUINO_LWIP2_HIGHER_BANDWIDTH_LOW_FLASH
+; VTABLES in Flash (default)
+                            -DVTABLES_IN_FLASH
+; VTABLES in Heap
+;                            -DVTABLES_IN_DRAM
+; VTABLES in IRAM
+;                            -DVTABLES_IN_IRAM
+; enable one option set -> No exception recommended
+; No exception code in firmware
+                            -fno-exceptions
+                            -lstdc++
+; Exception code in firmware /needs much space!
+;                           -fexceptions
+;                           -lstdc++-exc
+
 [core_active]
 ; Select one core set for platform and build_flags
 platform                  = ${core_2_3_0.platform}
@@ -137,6 +177,8 @@ build_flags               = ${core_2_3_0.build_flags}
 ;build_flags               = ${core_2_5_2.build_flags}
 ;platform                  = ${core_stage.platform}
 ;build_flags               = ${core_stage.build_flags}
+;platform                  = ${core_pre.platform}
+;build_flags               = ${core_pre.build_flags}
 
 [common]
 framework                 = arduino
@@ -145,6 +187,13 @@ board_build.flash_mode    = dout
 
 platform                  = ${core_active.platform}
 build_flags               = ${core_active.build_flags}
+
+; *** Optional Debug messages
+;                            -DDEBUG_TASMOTA_CORE
+;                            -DDEBUG_TASMOTA_DRIVER
+;                            -DDEBUG_TASMOTA_SENSOR
+
+; *** Optional Firmware configurations
 ;                            -DFIRMWARE_CLASSIC
 ;                            -DFIRMWARE_MINIMAL
 ;                            -DFIRMWARE_SENSORS