update for S3 buildenvs, and support for 32MB Flash

* removed obsolete "-D CONFIG_LITTLEFS_FOR_IDF_3_2" => this was only for the old "lorol/LITTLEFS" whic is not used any more in WLED
* commented out "-D ARDUINO_USB_MODE=1", because users have reported that it leads to boot "hanging" when no USB-CDC is connected
* Added buildenv and 32MB partition for esp32s3-WROOM-2 with 32MB flash
* disabled "-mfix-esp32-psram-cache-issue" warning for -S2 and -S3 (only necessary for classic esp32 "rev.1", but harmful on S3 or S2)

platformio.ini

@@ -561,9 +561,9 @@ upload_speed = 921600
 custom_usermods = audioreactive
 build_unflags = ${common.build_unflags}
 build_flags = ${common.build_flags} ${esp32s3.build_flags} -D WLED_RELEASE_NAME=\"ESP32-S3_16MB_opi\"
-  -D CONFIG_LITTLEFS_FOR_IDF_3_2 -D WLED_WATCHDOG_TIMEOUT=0
+  -D WLED_WATCHDOG_TIMEOUT=0
   ;-D ARDUINO_USB_CDC_ON_BOOT=0  ;; -D ARDUINO_USB_MODE=1 ;; for boards with serial-to-USB chip
-  -D ARDUINO_USB_CDC_ON_BOOT=1 -D ARDUINO_USB_MODE=1      ;; for boards with USB-OTG connector only (USBCDC or "TinyUSB")
+  -D ARDUINO_USB_CDC_ON_BOOT=1 ;; -D ARDUINO_USB_MODE=1      ;; for boards with USB-OTG connector only (USBCDC or "TinyUSB")
   -DBOARD_HAS_PSRAM
 lib_deps = ${esp32s3.lib_deps}
 board_build.partitions = ${esp32.extreme_partitions}
@@ -583,9 +583,9 @@ upload_speed = 921600
 custom_usermods = audioreactive
 build_unflags = ${common.build_unflags}
 build_flags = ${common.build_flags} ${esp32s3.build_flags} -D WLED_RELEASE_NAME=\"ESP32-S3_8MB_opi\"
-  -D CONFIG_LITTLEFS_FOR_IDF_3_2 -D WLED_WATCHDOG_TIMEOUT=0
+  -D WLED_WATCHDOG_TIMEOUT=0
   ;-D ARDUINO_USB_CDC_ON_BOOT=0  ;; -D ARDUINO_USB_MODE=1 ;; for boards with serial-to-USB chip
-  -D ARDUINO_USB_CDC_ON_BOOT=1 -D ARDUINO_USB_MODE=1      ;; for boards with USB-OTG connector only (USBCDC or "TinyUSB")
+  -D ARDUINO_USB_CDC_ON_BOOT=1 ;; -D ARDUINO_USB_MODE=1      ;; for boards with USB-OTG connector only (USBCDC or "TinyUSB")
   -DBOARD_HAS_PSRAM
 lib_deps = ${esp32s3.lib_deps}
 board_build.partitions = ${esp32.large_partitions}
@@ -604,13 +604,13 @@ upload_speed = 921600
 custom_usermods = audioreactive
 build_unflags = ${common.build_unflags}
 build_flags = ${common.build_flags} ${esp32s3.build_flags} -D WLED_RELEASE_NAME=\"ESP32-S3_WROOM-2\"
-  -D CONFIG_LITTLEFS_FOR_IDF_3_2 -D WLED_WATCHDOG_TIMEOUT=0
+  -D WLED_WATCHDOG_TIMEOUT=0
   -D ARDUINO_USB_CDC_ON_BOOT=0  ;; -D ARDUINO_USB_MODE=1 ;; for boards with serial-to-USB chip
-  ;; -D ARDUINO_USB_CDC_ON_BOOT=1 -D ARDUINO_USB_MODE=1      ;; for boards with USB-OTG connector only (USBCDC or "TinyUSB")
+  ;; -D ARDUINO_USB_CDC_ON_BOOT=1 ;; -D ARDUINO_USB_MODE=1      ;; for boards with USB-OTG connector only (USBCDC or "TinyUSB")
   -DBOARD_HAS_PSRAM
   -D LEDPIN=38 -D DATA_PINS=38 ;; buildin WS2812b LED
   -D BTNPIN=0 -D RLYPIN=16 -D IRPIN=17 -D AUDIOPIN=-1
-  -D WLED_DEBUG
+  ;;-D WLED_DEBUG
   -D SR_DMTYPE=1 -D I2S_SDPIN=13 -D I2S_CKPIN=14 -D I2S_WSPIN=15 -D MCLK_PIN=4  ;; I2S mic
 lib_deps = ${esp32s3.lib_deps}
 
@@ -619,6 +619,23 @@ board_upload.flash_size = 16MB
 board_upload.maximum_size = 16777216
 monitor_filters = esp32_exception_decoder
 
+[env:esp32S3_wroom2_32MB]
+;; For ESP32-S3 WROOM-2 with 32MB Flash, and >= 8MB PSRAM (memory_type: opi_opi)
+extends = env:esp32S3_wroom2
+build_flags = ${common.build_flags} ${esp32s3.build_flags} -D WLED_RELEASE_NAME=\"ESP32-S3_WROOM-2_32MB\"
+  -D WLED_WATCHDOG_TIMEOUT=0
+  -D ARDUINO_USB_CDC_ON_BOOT=0  ;; -D ARDUINO_USB_MODE=1 ;; for boards with serial-to-USB chip
+  ;; -D ARDUINO_USB_CDC_ON_BOOT=1 ;; -D ARDUINO_USB_MODE=1      ;; for boards with USB-OTG connector only (USBCDC or "TinyUSB")
+  -DBOARD_HAS_PSRAM
+  -D LEDPIN=38 -D DATA_PINS=38 ;; buildin WS2812b LED
+  -D BTNPIN=0 -D RLYPIN=16 -D IRPIN=17 -D AUDIOPIN=-1
+  ;;-D WLED_DEBUG
+  -D SR_DMTYPE=1 -D I2S_SDPIN=13 -D I2S_CKPIN=14 -D I2S_WSPIN=15 -D MCLK_PIN=4  ;; I2S mic
+board_build.partitions = tools/WLED_ESP32_32MB.csv
+board_upload.flash_size = 32MB
+board_upload.maximum_size = 33554432
+monitor_filters = esp32_exception_decoder
+
 [env:esp32s3_4M_qspi]
 ;; ESP32-S3, with 4MB FLASH and <= 4MB PSRAM (memory_type: qio_qspi)
 board = lolin_s3_mini ;; -S3 mini, 4MB flash 2MB PSRAM 
@@ -628,7 +645,7 @@ upload_speed = 921600
 custom_usermods = audioreactive
 build_unflags = ${common.build_unflags}
 build_flags = ${common.build_flags} ${esp32s3.build_flags} -D WLED_RELEASE_NAME=\"ESP32-S3_4M_qspi\"
-  -DARDUINO_USB_CDC_ON_BOOT=1 -DARDUINO_USB_MODE=1      ;; for boards with USB-OTG connector only (USBCDC or "TinyUSB")
+  -DARDUINO_USB_CDC_ON_BOOT=1 ;; -DARDUINO_USB_MODE=1      ;; for boards with USB-OTG connector only (USBCDC or "TinyUSB")
   -DBOARD_HAS_PSRAM
   -DLOLIN_WIFI_FIX ; seems to work much better with this
   -D WLED_WATCHDOG_TIMEOUT=0

tools/WLED_ESP32_32MB.csv

@@ -0,0 +1,7 @@
+# Name,   Type, SubType, Offset,  Size, Flags
+nvs,      data, nvs,     0x9000,  0x5000,
+otadata,  data, ota,     0xe000,  0x2000,
+app0,     app,  ota_0,   0x10000, 0x300000,
+app1,     app,  ota_1,   0x310000,0x300000,
+spiffs,   data, spiffs,  0x610000,0x19E0000,
+coredump, data, coredump,,64K

wled00/util.cpp

@@ -636,10 +636,12 @@ int32_t hw_random(int32_t lowerlimit, int32_t upperlimit) {
   #if defined(IDF_TARGET_ESP32C3) || defined(ESP8266)
     #error "ESP32-C3 and ESP8266 with PSRAM is not supported, please remove BOARD_HAS_PSRAM definition"
   #else
-    // BOARD_HAS_PSRAM also means that compiler flag "-mfix-esp32-psram-cache-issue" has to be used
+  #if defined(ARDUINO_ARCH_ESP32) && !defined(CONFIG_IDF_TARGET_ESP32S2) && !defined(CONFIG_IDF_TARGET_ESP32S3) // PSRAM fix only needed for classic esp32
+    // BOARD_HAS_PSRAM also means that compiler flag "-mfix-esp32-psram-cache-issue" has to be used for old "rev.1" esp32
     #warning "BOARD_HAS_PSRAM defined, make sure to use -mfix-esp32-psram-cache-issue to prevent issues on rev.1 ESP32 boards \
               see https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-guides/external-ram.html#esp32-rev-v1-0"
   #endif
+  #endif
 #else
   #if !defined(IDF_TARGET_ESP32C3) && !defined(ESP8266)
     #pragma message("BOARD_HAS_PSRAM not defined, not using PSRAM.")