Fixed Serial2 issue for ESP32C3, added arduino-build.

Makefile

@@ -484,6 +484,88 @@ $(ESP32)/ESP32forth/ESP32forth.ino: $(ESP32_PARTS) | $(ESP32)/ESP32forth
      boot=@$(GEN)/esp32_boot.h \
      >$@
 
+# ---- ESP32 ARDUINO BUILD AND FLASH ----
+
+ARDUINO_BUILDER="/mnt/c/Program Files (x86)/Arduino/arduino-builder.exe"
+ARDUINO="c:/Program Files (x86)/Arduino"
+LOCALAPPDATA=$(subst \,/,$(shell cmd.exe /c echo %LOCALAPPDATA%))
+ARDUINO_APP=${LOCALAPPDATA}/Arduino15
+ARDUINO_APP_DIR=$(subst C:/,/mnt/c/,${ARDUINO_APP})
+ESPTOOL=${ARDUINO_APP_DIR}/packages/esp32/tools/esptool_py/4.2.1/esptool.exe
+
+ESP32_BOARD_esp32=-fqbn=esp32:esp32:esp32:PSRAM=disabled,PartitionScheme=no_ota,CPUFreq=240,FlashMode=qio,FlashFreq=80,FlashSize=4M,UploadSpeed=921600,LoopCore=1,EventsCore=1,DebugLevel=none,EraseFlash=none
+
+ESP32_BOARD_esp32s2=-fqbn=esp32:esp32:esp32s2:CDCOnBoot=default,MSCOnBoot=default,DFUOnBoot=default,UploadMode=default,PSRAM=disabled,PartitionScheme=default,CPUFreq=240,FlashMode=qio,FlashFreq=80,FlashSize=4M,UploadSpeed=921600,DebugLevel=none,EraseFlash=none
+
+ESP32_BOARD_esp32s3=-fqbn=esp32:esp32:esp32s3:PSRAM=disabled,FlashMode=qio,FlashSize=4M,LoopCore=1,EventsCore=1,USBMode=hwcdc,CDCOnBoot=default,MSCOnBoot=default,DFUOnBoot=default,UploadMode=default,PartitionScheme=default,CPUFreq=240,UploadSpeed=921600,DebugLevel=none,EraseFlash=none
+
+ESP32_BOARD_esp32c3=-fqbn=esp32:esp32:esp32c3:CDCOnBoot=default,PartitionScheme=default,CPUFreq=160,FlashMode=qio,FlashFreq=80,FlashSize=4M,UploadSpeed=921600,DebugLevel=none,EraseFlash=none
+
+ESP32_BOARD_esp32cam=-fqbn=esp32:esp32:esp32cam:CPUFreq=240,FlashMode=qio,PartitionScheme=huge_app,FlashFreq=80,DebugLevel=none,EraseFlash=none
+
+$(ESP32)/%_build:
+	mkdir -p $@
+
+$(ESP32)/%_cache:
+	mkdir -p $@
+
+$(ESP32)/%_build/ESP32forth.ino.bin: $(ESP32)/ESP32forth/ESP32forth.ino | \
+    $(ESP32)/%_build $(ESP32)/%_cache
+	${ARDUINO_BUILDER} \
+    -hardware ${ARDUINO}/hardware \
+    -hardware ${ARDUINO_APP}/packages \
+    -tools ${ARDUINO}/tools-builder \
+    -tools ${ARDUINO}/hardware/tools/avr \
+    -tools ${ARDUINO_APP}/packages \
+    -built-in-libraries ${ARDUINO}/libraries \
+    -prefs=build.warn_data_percentage=75 \
+    ${ESP32_BOARD_$(subst _build,,$(notdir $(word 1,$|)))} \
+    -build-path $(word 1,$|) \
+    -build-cache $(word 2,$|) \
+    $(ESP32)/ESP32forth/ESP32forth.ino
+
+esp32all: \
+  $(ESP32)/esp32_build/ESP32forth.ino.bin \
+  $(ESP32)/esp32s2_build/ESP32forth.ino.bin \
+  $(ESP32)/esp32s3_build/ESP32forth.ino.bin \
+  $(ESP32)/esp32c3_build/ESP32forth.ino.bin \
+  $(ESP32)/esp32cam_build/ESP32forth.ino.bin
+
+PORT?=COM3
+
+BAUD_esp32=921600
+BAUD_esp32s2=921600
+BAUD_esp32s3=921600
+BAUD_esp32c3=921600
+BAUD_esp32cam=460800
+
+BOOTLOADER_esp32=0x1000
+BOOTLOADER_esp32s2=0x1000
+BOOTLOADER_esp32s3=0x0
+BOOTLOADER_esp32c3=0x0
+BOOTLOADER_esp32cam=0x1000
+
+CHIP_esp32=esp32
+CHIP_esp32s2=esp32s2
+CHIP_esp32s3=esp32s3
+CHIP_esp32c3=esp32c3
+CHIP_esp32cam=esp32
+
+%-flash: $(ESP32)/%_build/ESP32forth.ino.bin
+	${ESPTOOL} \
+  --chip ${CHIP_$(subst -flash,,$@)} \
+  --baud ${BAUD_$(subst -flash,,$@)} \
+  --port ${PORT} \
+  --before default_reset \
+  --after hard_reset write_flash -z \
+  --flash_mode dio \
+  --flash_freq 80m \
+  --flash_size 4MB \
+  ${BOOTLOADER_$(subst -flash,,$@)} $(ESP32)/$(subst -flash,,$@)_build/ESP32forth.ino.bootloader.bin \
+  0x8000 $(ESP32)/$(subst -flash,,$@)_build/ESP32forth.ino.partitions.bin \
+  0xe000 ${ARDUINO_APP}/packages/esp32/hardware/esp32/2.0.5/tools/partitions/boot_app0.bin \
+  0x10000 $(ESP32)/$(subst -flash,,$@)_build/ESP32forth.ino.bin
+
 # ---- PACKAGE ----
 
 $(ESP32)/ESP32forth.zip: $(ESP32)/ESP32forth/ESP32forth.ino