Swap to new smaller FS but with backwads compatible minimal

Author: netmindz

platformio.ini

@@ -83,6 +83,7 @@ default_envs =
   esp32c3dev_2MB_M         ;; experimental - 2MB Flash, no OTA
   esp32c3mini_dio_4MB_M    ;; for boards that need "dio" flash mode (instead of qio)
   seeed_esp32c3_4MB_S      ;; experimental
+  esp32_4MB_V4_Minimal
   esp32_4MB_V4_S           ;; experimental
   esp32_16MB_V4_S          ;; experimental - optimized for speed
   esp32_16MB_V4_M          ;; experimental
@@ -310,8 +311,8 @@ build_flags = -g
   ; -D WLEDMM_SLOWPATH ;; don't use I2S for LED bus
   ; -DARDUINO_USB_CDC_ON_BOOT=0 ;; this flag is mandatory for "classic ESP32" when building with arduino-esp32 >=2.0.3
 
-default_partitions = tools/WLED_ESP32_4MB_1MB_FS.csv      ;; WLED standard for 4MB flash: 1.4MB firmware, 1MB filesystem
-;default_partitions = tools/WLED_ESP32_4MB_256KB_FS.csv   ;; WLEDMM alternative for 4MB flash:   1.8MB firmware, 256KB filesystem (esptool erase_flash needed before changing)
+; default_partitions = tools/WLED_ESP32_4MB_1MB_FS.csv      ;; WLED standard for 4MB flash: 1.4MB firmware, 1MB filesystem
+default_partitions = tools/WLED_ESP32_4MB_256KB_FS.csv   ;; WLEDMM alternative for 4MB flash:   1.8MB firmware, 256KB filesystem (esptool erase_flash needed before changing)
 
 tiny_partitions = tools/WLED_ESP32_2MB_noOTA.csv
 extended_partitions = tools/WLED_ESP32_4MB_700k_FS.csv
@@ -1573,6 +1574,34 @@ lib_deps = ${esp8266.lib_deps}
 ;; Warning: the build-in LittleFS (arduino-esp32 2.0.x) seems to be "slightly different" from Lorol LittleFS. 
 ;; When upgrading to the new framework, it might be necessary to first do a chip erase (make sure you have a backup of cfg.json and presets.json)
 
+; compiled with ESP-IDF 4.4.1
+[env:esp32_4MB_V4_Minimal]
+extends = esp32_4MB_V4_S_base
+board_build.partitions = tools/WLED_ESP32_4MB_1MB_FS.csv ;; WLED-AC compatibility
+build_flags = ${esp32_4MB_V4_S_base.esp32_build_flags}
+  -D WLED_RELEASE_NAME=esp32_4MB_V4_Minimal
+  -D WLED_WATCHDOG_TIMEOUT=0 #-D WLED_DISABLE_BROWNOUT_DET
+  -D ARDUINO_USB_CDC_ON_BOOT=0 ; needed for arduino-esp32 >=2.0.4; avoids errors on startup
+  -D WLEDMM_FASTPATH ; WLEDMM experimental option. Reduces audio lag (latency), and allows for faster LED framerates. May break compatibility with previous versions.
+  -D WLED_DISABLE_LOXONE
+  -D WLED_DISABLE_ALEXA
+  ; -D WLED_DISABLE_HUESYNC
+  ; -D WLED_DISABLE_MQTT
+  -D WLED_DISABLE_INFRARED
+  ; -D WLED_DEBUG
+  ; -D SR_DEBUG
+  ; -D MIC_LOGGER
+  ; -D WLED_ENABLE_HUB75MATRIX
+
+;   -flto
+; build_unflags = ${common.build_unflags} -fno-lto
+
+lib_deps = ${esp32_4MB_V4_S_base.esp32_lib_deps}
+lib_ignore = IRremoteESP8266 ; use with WLED_DISABLE_INFRARED for faster compilation
+
+; RAM:   [===       ]  28.4% (used 92984 bytes from 327680 bytes)
+; Flash: [==========]  96.5% (used 1518009 bytes from 1572864 bytes)
+
 ; compiled with ESP-IDF 4.4.1
 [env:esp32_4MB_V4_S]
 extends = esp32_4MB_V4_S_base