new pio environment for ESP32 rev3 with PSRAM (faster)

* disables PSRAM fixes that are not necessary any more on "revision 3" boards.

platformio.ini

@@ -1306,6 +1306,43 @@ lib_ignore = IRremoteESP8266 ; use with WLED_DISABLE_INFRARED for faster compila
 ;; RAM:   [==        ]  24.3% (used 79524 bytes from 327680 bytes)
 ;; Flash: [========= ]  93.2% (used 1466389 bytes from 1572864 bytes)
 
+;; similar to 4MB_PSRAM_S, but optimized for WROVER-E (chip revision >= 3) that doesn't need any workarounds for PSRAM any more
+;; tl;dr: its faster on PSRAM. But it will not work on all boards.
+[env:esp32_4MB_PSRAM_REV3_S]
+extends = esp32_4MB_V4_S_base
+;board = esp32cam
+board = lolin_d32_pro
+;default_partitions = tools/WLED_ESP32_4MB_256KB_FS.csv   ;; Alternative for 4MB flash:   1.8MB firmware, 256KB filesystem (esptool erase_flash needed before changing)
+build_unflags = ${esp32_4MB_V4_S_base.build_unflags}
+  -DARDUINO_EVENT_RUNNING_CORE=1  ;; we want to run wifi on core0, so remove the standard flag
+  -mfix-esp32-psram-cache-issue    ;; this fix is not needed any more for revision 3
+  -mfix-esp32-psram-cache-strategy=memw ;; same as above
+  ;;-Os ;; if you want to be even faster - use together with "-O2" in build_flags. Enable alternative default_partitions (above) to have more program space.
+
+build_flags = ${esp32_4MB_V4_S_base.build_flags}
+  -DARDUINO_EVENT_RUNNING_CORE=0  ;; assign Wifi to core0, to have more CPU on core#1 (arduino loop)
+  -DARDUINO_RUNNING_CORE=1        ;; should be default, but does not hurt
+  ;-DCONFIG_MBEDTLS_DYNAMIC_BUFFER=1 ;; optional - seems to move more buffers into PSRAM
+  ;; enable the next line together with "-Os" in build_unflags (unfortunately --> 104.0%% Flash)
+  ;;-O2 -fno-jump-tables -fno-tree-switch-conversion -Wwrite-strings -fstrict-volatile-bitfields
+  -DBOARD_HAS_PSRAM -D WLED_USE_PSRAM_JSON ;; -D WLED_USE_PSRAM ;; WLED_USE_PSRAM causes major slow-down (slow LEDs) on some ESP32 boards
+  -D WLED_RELEASE_NAME=esp32_4MB_PSRAM_REV3_S
+  -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 WLED_DISABLE_LOXONE ;  FLASH 1272 bytes
+  -D WLED_DISABLE_HUESYNC ; RAM 122 bytes; FLASH  6308 bytes
+  -D WLED_DISABLE_ALEXA ;   RAM 116 bytes; FLASH 13524 bytes
+  -D WLED_DISABLE_MQTT ;    RAM 216 bytes; FLASH 16496 bytes
+  -D WLED_DISABLE_INFRARED ;RAM 136 bytes; FLASH 24492 bytes ewowi: disabled to stay below 100%
+  ;-D WLED_DISABLE_ADALIGHT  ;; To disable serial protocols (see upstream #3128)
+  ; -D WLED_ENABLE_DMX
+  ; -D WLED_DEBUG
+  ; -D SR_DEBUG
+  ; -D MIC_LOGGER
+lib_ignore = IRremoteESP8266 ; use with WLED_DISABLE_INFRARED for faster compilation
+;; RAM:   [==        ]  16.8% (used 55124 bytes from 327680 bytes)
+;; Flash: [========= ]  92.7% (used 1458729 bytes from 1572864 bytes)
+
 ;; PSRAM build env that only leaves 300Kb for filesystem (instead of 1MB), but adds 300kB for program space
 [env:esp32_4MB_PSRAM_M]
 extends = esp32_4MB_V4_M_base