adds build instructions to the readme.MD file

I also adjusted the build program so it aligns with the build instructions.

Author: kdschlosser

README.md

@@ -1,2 +1,358 @@
-TODO
-====
+# LVGL binding for Micropython
+______________________________
+
+
+I have tried to make this as simple as possible for paople to use. 
+There are some glitches still in it I am sure. If you come across an issue 
+please let me know.
+
+I am still in development mode for the unix port. I am writing an SDL driver 
+that conforms To the rest of the driver framework. I have started working on 
+writing the frameworks for the different indev (input) types that LVGL supports.
+The frameworks are written to make it easier to write display and input drivers
+for the binding.
+
+<br>
+
+## *Build Instructions*
+_______________________
+
+I have changed the design of the binding so it is no longer a dependancy of 
+MicroPython. Instead MicroPython is now a dependency of the binding. By doing 
+this I have simplified the process up updating the MicroPython version. Only 
+small changes are now needed to support newer versions of MicroPython.
+
+In order to make this all work I have written a Python script that handles
+Building the binding. The only prerequesits are that you have a C compiler 
+installed (gcc, clang, msvc) and the necessary support libs.
+
+<br>
+
+### *Requirements*
+_________________
+Linux
+
+ * build-essential 
+ * libffi-dev 
+ * pkg-config
+
+
+Compiling for STM32 unider Linux
+
+ * gcc-arm-none-eabi 
+ * libnewlib-arm-none-eabi
+
+
+OSX 
+
+ * brew install llvm
+
+
+Windows
+
+ * not supported yet
+
+<br>
+ 
+### *Build Target*
+__________________
+
+You are also going to need Python >= 3.10 installed for all builds
+
+There is a single entry point for all builds. That is the make.py script in the
+root of the repository.
+
+The first argument is positional and it must be one of the following.
+
+ * esp32
+ * windows
+ * stm32
+ * unix
+ * rp2 
+ * renesas-ra
+ * nrf
+ * mimxrt
+ * samd
+
+
+<br>
+
+### *Build Options*
+________________________
+
+The next few arguments are optional to some degree.
+
+ * submodules\*\*: collects all needed dependencies to perform the build
+ * clean: cleans the build environment
+ * mpy_cross\*\*: compiles mpy-cross 
+ this is not used for all builds. if it is not supported it will do nothing.
+
+
+**must be run only one time when the build is intially started. after that you will not need 
+to add these arguments. There is internal checking that is done to see if the argument needs to 
+be carried out. So you can also optionally leave it there if you want. 
+
+<br>
+
+### *Identifying the MCU board*
+_______________________________
+
+The next group of options are going to be port specific, some may have them and some may not.
+
+ * BOARD: The MCU to build for. This follows the same symantics as what MIcroPython uses.
+ * BOARD_VARIANT: if there is a variation of the board that it to be compiled for.
+
+
+I will go into specifics for what what boards and variants are available for a specific port a 
+little bit further down.
+
+<br>
+
+### *Additional Arguments*
+____________________
+
+ * LV_CFLAGS: additional compiler flags that get passed to the LVGL build only.
+ * FROZEN_MANIFEST: path to a custom frozen manifest file
+ * DISPLAY: this can either be the file name (less the .py) of a display 
+ driver that is in the driver/display folder or it can be the absolute
+ path to your own custom driver (with the .py extension)
+ * INDEV: this can either be the file name (less the .py) of an indev 
+ driver that is in the driver/indev folder or it can be the absolute
+ path to your own custom driver (with the .py extension)
+
+
+<br>
+
+### *ESP32 specific options*
+____________________________
+ * --skip-partition-resize: do not resize the firmware partition
+ * --partition-size: set a custom firmware partition size
+
+
+<br>
+
+## *Boards & Board Variants*
+___________
+
+ * esp32: BOARD=
+ * ARDUINO_NANO_ESP32
+ * ESP32_GENERIC
+ * BOARD_VARIANT=D2WD
+ * BOARD_VARIANT=OTA
+ * ESP32_GENERIC_C3
+ * ESP32_GENERIC_S2
+ * ESP32_GENERIC_S3
+ * BOARD_VARIANT=SPIRAM_OCT
+ * LILYGO_TTGO_LORA32
+ * LOLIN_C3_MINI
+ * LOLIN_S2_MINI
+ * LOLIN_S2_PICO
+ * M5STACK_ATOM
+ * OLIMEX_ESP32_POE
+ * SIL_WESP32
+ * UM_FEATHERS2
+ * UM_FEATHERS2NEO
+ * UM_FEATHERS3
+ * UM_NANOS3
+ * UM_PROS3
+ * UM_TINYPICO
+ * UM_TINYS2
+ * UM_TINYS3
+ * UM_TINYWATCHS3
+
+ * windows: VARIANT=
+ * dev
+ * stndard
+ 
+ * stm32: BOARD=
+ * ADAFRUIT_F405_EXPRESS
+ * ARDUINO_GIGA
+ * ARDUINO_NICLA_VISION
+ * ARDUINO_PORTENTA_H7
+ * B_L072Z_LRWAN1
+ * B_L475E_IOT01A
+ * CERB40
+ * ESPRUINO_PICO
+ * GARATRONIC_NADHAT_F405
+ * GARATRONIC_PYBSTICK26_F411
+ * HYDRABUS
+ * LEGO_HUB_NO6
+ * LEGO_HUB_NO7
+ * LIMIFROG
+ * MIKROE_CLICKER2_STM32
+ * MIKROE_QUAIL
+ * NETDUINO_PLUS_2
+ * NUCLEO_F091RC
+ * NUCLEO_F401RE
+ * NUCLEO_F411RE
+ * NUCLEO_F412ZG
+ * NUCLEO_F413ZH
+ * NUCLEO_F429ZI
+ * NUCLEO_F439ZI
+ * NUCLEO_F446RE
+ * NUCLEO_F722ZE
+ * NUCLEO_F746ZG
+ * NUCLEO_F756ZG
+ * NUCLEO_F767ZI
+ * NUCLEO_G0B1RE
+ * NUCLEO_G474RE
+ * NUCLEO_H563ZI
+ * NUCLEO_H723ZG
+ * NUCLEO_H743ZI
+ * NUCLEO_H743ZI2
+ * NUCLEO_L073RZ
+ * NUCLEO_L152RE
+ * NUCLEO_L432KC
+ * NUCLEO_L452RE
+ * NUCLEO_L476RG
+ * NUCLEO_L4A6ZG
+ * NUCLEO_WB55
+ * NUCLEO_WL55
+ * OLIMEX_E407
+ * OLIMEX_H407
+ * PYBD_SF2
+ * PYBD_SF3
+ * PYBD_SF6
+ * PYBLITEV10
+ * PYBV10
+ * PYBV11
+ * PYBV3
+ * PYBV4
+ * SPARKFUN_MICROMOD_STM32
+ * STM32F411DISC
+ * STM32F429DISC
+ * STM32F439
+ * STM32F4DISC
+ * STM32F769DISC
+ * STM32F7DISC
+ * STM32H573I_DK
+ * STM32H7B3I_DK
+ * STM32L476DISC
+ * STM32L496GDISC
+ * USBDONGLE_WB55
+ * VCC_GND_F407VE
+ * VCC_GND_F407ZG
+ * VCC_GND_H743VI
+
+ * unix: VARIANT=
+ * coverage
+ * minimal
+ * nanbox
+ * standard
+ 
+ * rp2: BOARD=
+ * ADAFRUIT_FEATHER_RP2040
+ * ADAFRUIT_ITSYBITSY_RP2040
+ * ADAFRUIT_QTPY_RP2040
+ * ARDUINO_NANO_RP2040_CONNECT
+ * GARATRONIC_PYBSTICK26_RP2040
+ * NULLBITS_BIT_C_PRO
+ * PIMORONI_PICOLIPO_16MB
+ * PIMORONI_PICOLIPO_4MB
+ * PIMORONI_TINY2040
+ * POLOLU_3PI_2040_ROBOT
+ * POLOLU_ZUMO_2040_ROBOT
+ * RPI_PICO
+ * RPI_PICO_W
+ * SIL_RP2040_SHIM
+ * SPARKFUN_PROMICRO
+ * SPARKFUN_THINGPLUS
+ * W5100S_EVB_PICO
+ * W5500_EVB_PICO
+ * WEACTSTUDIO
+ * BOARD_VARIANT=FLASH_2M
+ * BOARD_VARIANT=FLASH_4M
+ * BOARD_VARIANT=FLASH_8M
+ 
+ * renesas-ra: BOARD=
+ * ARDUINO_PORTENTA_C33
+ * EK_RA4M1
+ * EK_RA4W1
+ * EK_RA6M1
+ * EK_RA6M2
+ * RA4M1_CLICKER
+ * VK_RA6M5
+ 
+ * nrf: BOARD=
+ * ACTINIUS_ICARUS
+ * ARDUINO_NANO_33_BLE_SENSE
+ * ARDUINO_PRIMO
+ * BLUEIO_TAG_EVIM
+ * DVK_BL652
+ * EVK_NINA_B1
+ * EVK_NINA_B3
+ * FEATHER52
+ * IBK_BLYST_NANO
+ * IDK_BLYST_NANO
+ * MICROBIT
+ * NRF52840_MDK_USB_DONGLE
+ * PARTICLE_XENON
+ * PCA10000
+ * PCA10001
+ * PCA10028
+ * PCA10031
+ * PCA10040
+ * PCA10056
+ * PCA10059
+ * PCA10090
+ * SEEED_XIAO_NRF52
+ * WT51822_S4AT 
+
+ * mimxrt: BOARD=
+ * ADAFRUIT_METRO_M7
+ * MIMXRT1010_EVK
+ * MIMXRT1015_EVK
+ * MIMXRT1020_EVK
+ * MIMXRT1050_EVK
+ * MIMXRT1060_EVK
+ * MIMXRT1064_EVK
+ * MIMXRT1170_EVK
+ * OLIMEX_RT1010
+ * SEEED_ARCH_MIX
+ * TEENSY40
+ * TEENSY41
+
+ * samd: BOARD=
+ * ADAFRUIT_FEATHER_M0_EXPRESS
+ * ADAFRUIT_FEATHER_M4_EXPRESS
+ * ADAFRUIT_ITSYBITSY_M0_EXPRESS
+ * ADAFRUIT_ITSYBITSY_M4_EXPRESS
+ * ADAFRUIT_METRO_M4_EXPRESS
+ * ADAFRUIT_TRINKET_M0
+ * MINISAM_M4
+ * SAMD21_XPLAINED_PRO
+ * SEEED_WIO_TERMINAL
+ * SEEED_XIAO_SAMD21
+ * SPARKFUN_SAMD51_THING_PLUS
+ 
+
+<br>
+
+## *Build Command Examples*
+___________________________
+
+build with submodules and mpy_cross
+
+ python3 make.py esp32 submodules clean mpy_cross BOARD=ESP32_GENERIC_S3 BOARD_VARIANT=SPIRAM_OCT DISPLAY=st7796 INDEV=gt911
+
+build without submodules or mpy_cross
+
+ python3 make.py esp32 clean BOARD=ESP32_GENERIC_S3 BOARD_VARIANT=SPIRAM_OCT DISPLAY=st7796 INDEV=gt911
+
+
+I always recommend building with the clean command, this will ensure you get a good fresh build.
+
+NOTE:
+There is a bug in the ESP32 build. The first time around it will fail saying that 
+one of the sumbodules is not available. Run the build again with the submodules 
+argument in there and then it will build fine. For the life of me I cam not able to locate
+where the issue is stemming from. I will find it eventually.
+
+<br>
+
+I will provide directions on how to use the driver framework and also the drivers that are included
+with the binding in the coming weeks.
+
+<br>
+
+Thank again and enjoy!!

builder/esp32.py

@@ -153,12 +153,17 @@ def parse_args(extra_args, lv_cflags, board):
  action='store_true'
  )
 
- esp_argParser.add_argument(
- 'BOARD_VARIANT',
- dest='board_variant',
- default='',
- action='store'
- )
+ if board in ('ESP32_GENERIC', 'ESP32_GENERIC_S3'):
+ esp_argParser.add_argument(
+ 'BOARD_VARIANT',
+ dest='board_variant',
+ default='',
+ action='store'
+ )
+ else:
+ for arg in extra_args:
+ if arg.startswith('BOARD_VARIANT'):
+ raise RuntimeError(f'BOARD_VARIANT not supported by "{board}"')
 
  esp_argParser.add_argument(
  '--partition-size',