hub75 example buildenv from upstream

these will *not* work as-is for WLED-MM

platformio_override.ini.sample

@@ -63,3 +63,97 @@ build_flags = ${common.build_flags_esp8266}
 ;   
 ; set default color order of your led strip
 ;   -D DEFAULT_LED_COLOR_ORDER=COL_ORDER_GRB
+
+
+# ------------------------------------------------------------------------------
+# Hub75 examples from upstream WLED
+# ! Just for reference -> will need some adjust to work with WLED-MM !
+# ------------------------------------------------------------------------------
+
+;[env:esp32dev_hub75]
+;board = esp32dev
+;upload_speed = 921600
+;platform = ${esp32_idf_V4.platform}
+;platform_packages = ${esp32_idf_V4.platform_packages}
+;build_unflags = ${common.build_unflags}
+;build_flags = ${common.build_flags}
+;  -D WLED_RELEASE_NAME=\"ESP32_hub75\"
+;  -D WLED_ENABLE_HUB75MATRIX -D NO_GFX
+;  -D WLED_DEBUG_BUS
+;  ; -D WLED_DEBUG
+;  -D SR_DMTYPE=1 -D I2S_SDPIN=-1 -D I2S_CKPIN=-1 -D I2S_WSPIN=-1 -D MCLK_PIN=-1  ;; Disable to prevent pin clash
+;lib_deps = ${esp32_idf_V4.lib_deps}
+;  https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-DMA.git#3.0.11
+;monitor_filters = esp32_exception_decoder
+;board_build.partitions = ${esp32.default_partitions}
+;board_build.flash_mode = dio
+;custom_usermods = audioreactive
+
+;[env:esp32dev_hub75_forum_pinout]
+;extends = env:esp32dev_hub75
+;build_flags = ${common.build_flags}
+;              -D WLED_RELEASE_NAME=\"ESP32_hub75_forum_pinout\"
+;              -D WLED_ENABLE_HUB75MATRIX -D NO_GFX 
+;              -D ESP32_FORUM_PINOUT ;; enable for SmartMatrix default pins
+;              -D WLED_DEBUG_BUS
+;              -D SR_DMTYPE=1 -D I2S_SDPIN=-1 -D I2S_CKPIN=-1 -D I2S_WSPIN=-1 -D MCLK_PIN=-1  ;; Disable to prevent pin clash
+
+
+;[env:adafruit_matrixportal_esp32s3]
+;; ESP32-S3 processor, 8 MB flash, 2 MB of PSRAM, dedicated driver pins for HUB75
+;board = adafruit_matrixportal_esp32s3_wled
+;;; adafruit recommends to use arduino-esp32 2.0.14
+;;;platform = espressif32@ ~6.5.0
+;;;platform_packages = platformio/framework-arduinoespressif32 @ 3.20014.231204 ;; arduino-esp32 2.0.14
+;platform = ${esp32s3.platform}
+;platform_packages = ${esp32s3.platform_packages}
+;upload_speed = 921600
+;build_unflags = ${common.build_unflags}
+;build_flags = ${common.build_flags} ${esp32s3.build_flags} -D WLED_RELEASE_NAME=\"ESP32-S3_8M_qspi\"
+;  -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
+;  -D WLED_ENABLE_HUB75MATRIX -D NO_GFX
+;  -D S3_LCD_DIV_NUM=20 ;; Attempt to fix wifi performance issue when panel active with S3 chips
+;  -D ARDUINO_ADAFRUIT_MATRIXPORTAL_ESP32S3
+;  -D WLED_DEBUG_BUS
+;  -D SR_DMTYPE=1 -D I2S_SDPIN=-1 -D I2S_CKPIN=-1 -D I2S_WSPIN=-1 -D MCLK_PIN=-1  ;; Disable to prevent pin clash
+;lib_deps = ${esp32s3.lib_deps}
+;  https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-DMA.git#aa28e2a ;; S3_LCD_DIV_NUM fix
+;
+;board_build.partitions = ${esp32.large_partitions}                  ;; standard bootloader and 8MB Flash partitions
+;; board_build.partitions = tools/partitions-8MB_spiffs-tinyuf2.csv ;; supports adafruit UF2 bootloader
+;board_build.f_flash = 80000000L
+;board_build.flash_mode = qio
+;monitor_filters = esp32_exception_decoder
+;;custom_usermods = audioreactive
+
+;[env:esp32S3_PSRAM_HUB75]
+;;; MOONHUB HUB75 adapter board (lilygo T7-S3 with 16MB flash and PSRAM)
+;board = lilygo-t7-s3
+;platform = ${esp32s3.platform}
+;platform_packages = ${esp32s3.platform_packages}
+;upload_speed = 921600
+;build_unflags = ${common.build_unflags}
+;              ${Speed_Flags.build_unflags}    ;; optional: removes "-Os" so we can override with "-O2" in build_flags
+;build_flags = ${common.build_flags} ${esp32s3.build_flags} -D WLED_RELEASE_NAME=\"esp32S3_16MB_PSRAM_HUB75\"
+;              ${Speed_Flags.build_flags}      ;;  optional: -O2 -> optimize for speed instead of size
+;              -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
+;              -D WLED_ENABLE_HUB75MATRIX -D NO_GFX 
+;              -D S3_LCD_DIV_NUM=20 ;; Attempt to fix wifi performance issue when panel active with S3 chips
+;              -D MOONHUB_S3_PINOUT ;; HUB75 pinout
+;              -D WLED_DEBUG_BUS
+;              -D LEDPIN=14 -D BTNPIN=0 -D RLYPIN=15 -D IRPIN=-1 -D AUDIOPIN=-1 ;; defaults that avoid pin conflicts with HUB75
+;              -D SR_DMTYPE=1 -D I2S_SDPIN=10 -D I2S_CKPIN=11 -D I2S_WSPIN=12 -D MCLK_PIN=-1  ;; I2S mic
+;lib_deps = ${esp32s3.lib_deps}
+;           https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-DMA.git#aa28e2a ;; S3_LCD_DIV_NUM fix
+;;;board_build.partitions = ${esp32.large_partitions}               ;; for 8MB flash
+;board_build.partitions = ${esp32.extreme_partitions}               ;; for 16MB flash
+;board_build.f_flash = 80000000L
+;board_build.flash_mode = qio
+;monitor_filters = esp32_exception_decoder
+;;custom_usermods = audioreactive