Building firmware requires extra knowledge

[kf106]

1. I couldn't get it to work with esp-idf v4.4, I needed to use esp-idf v4.4.4. I combined the esp-idf clone instructions as follows:

git clone https://github.com/espressif/esp-idf.git
git checkout v4.4.4
git submodule update --init --recursive

2. the micropython repo that is current didn't work. I had to use v1.20.0 as follows:

git clone https://github.com/micropython/micropython.git
git checkout v1.20.0
git submodule update --init

3. The relative path for the make command didn't work for the USER_C_MODULES; I had to use an absolute ~/<path to st7789_mpy> argument

4. I needed to supply a board argument: BOARD=GENERIC_S3_SPIRAM_OCT

5. the sdkconfig.board file in micropython/ports/esp32/boards/GENERIC_S3_SPIRAM_OCT/ needed editing to select 16MB:

CONFIG_FLASHMODE_QIO=y
CONFIG_ESPTOOLPY_FLASHFREQ_80M=y
CONFIG_ESPTOOLPY_FLASHSIZE_DETECT=y
CONFIG_ESPTOOLPY_AFTER_NORESET=y

CONFIG_SPIRAM_MEMTEST=

CONFIG_ESPTOOLPY_FLASHSIZE_4MB=
CONFIG_ESPTOOLPY_FLASHSIZE_8MB=
CONFIG_ESPTOOLPY_FLASHSIZE_16MB=y
CONFIG_PARTITION_TABLE_CUSTOM=y
CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions-8MiB.csv"

After that, I got a firmware.bin in the build-GENERIC_S3_SPIRAM_OCT folder that, after flashing, gave me a micropython REPL after connecting with putty.

I hope this helps other people having the same problem. I was building on a clean install of Ubuntu 22.04.

[robsannaa]

Didn't you get an error like this?
*** Support for FROZEN_MPY_DIR was removed. Please use manifest.py instead, see https://docs.micropython.org/en/latest/reference/manifest.html. Stop.

[russhughes]

That is another new change in the build system.

[ubidefeo]

@kf106

I have successfully compiled with the latest IDF (checkout 5.0.4) and MicroPython (master branch).
I also configured default I2C(0) pins in mpconfigboard.cmake
Here are the steps I followed, forgive the lengthy description, it's from my Obsidian notes

LilyGo T-Display S3 with 320x170 OLED parallel

• copy ports/esp32/boards/ESP32_GENERIC_S3 to `ports/esp32/boards/LILYGO_T-Display_S3

• add modules to get them frozen in the build (optional)

  • tdisplay.py

• add manifest.py to instruct using a boards manifest and integrate other directives (optional)

• edit the following files to add information on the board

  • board.json (info used in sys to provide implementation details)
  • board.md (just textual information for the download page)
  • manifest.py ONLY IF YOU ADDED FROZEN MODULES (build directives for the board)

     include("$(PORT_DIR)/boards/manifest.py")
     freeze("modules")
    

  • mpconfigboard.cmake ONLY IF YOU ADDED FROZEN MODULES (cmake directives )
    • add set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)
  • mpconfigboard.h (build config directives such as I2C pins or other custom info)

     #ifndef MICROPY_HW_BOARD_NAME
     // Can be set by mpconfigboard.cmake.
     #define MICROPY_HW_BOARD_NAME               "LilyGo T-Display S3"
     #endif
     #define MICROPY_HW_MCU_NAME                 "ESP32S3"
     // Enable UART REPL for modules that have an external USB-UART and don't use native USB.
     #define MICROPY_HW_ENABLE_UART_REPL         (1)
     #define MICROPY_HW_I2C0_SCL                 (44)
     #define MICROPY_HW_I2C0_SDA                 (43)
     
    

• sdkconfig.board contains configuration for flash, speed, partitions etc
  CONFIG_ESPTOOLPY_FLASHMODE_QIO=y CONFIG_ESPTOOLPY_FLASHFREQ_80M=y CONFIG_ESPTOOLPY_AFTER_NORESET=y CONFIG_ESPTOOLPY_FLASHSIZE_4MB= CONFIG_ESPTOOLPY_FLASHSIZE_8MB= CONFIG_ESPTOOLPY_FLASHSIZE_16MB=y CONFIG_PARTITION_TABLE_CUSTOM=y CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions-16MiB.csv"

• git clone [email protected]:russhughes/st7789s3_mpy.git somewhere (make sure it's patched for MP 1.22+ and IDF 5.x)

• my patched version is here https://github.com/ubidefeo/st7789s3_mpy/tree/main

• cd into the ports/esp32 and run

  • make BOARD=LILYGO_T-Display_S3 USER_C_MODULES={PATH_TO_ST7789s3_mpy_CLONED_REPO}/st7789s3_mpy/st7789/micropython.cmake

• flash the obtained build-LILYGO_T-Display_S3/firmware.bin to the board

  • put the board into boot mode:
    • Hold BOOT (B0)
    • press RESET
    • release RESET
  • erase and flash the binary
    • esptool.py --chip=auto -p {SERIAL_PORT} erase_flash
    • esptool.py --chip=auto -p {SERIAL_PORT} write_flash -z 0 build-LILYGO_T-Display_S3/firmware.bin
  • RESET the board

if you're interested, here's the module I modified and froze

tdisplay.py

""" LilyGo T-DISPLAY-S3 170x320 ST7789 display """

from machine import Pin, SPI, freq
import st7789

freq(240000000)  # 240mhz clock

TFA = 0
BFA = 0

def Display(rotation=0, buffer_size=0, options=0):
    LCD_POWER = Pin(15, Pin.OUT)
    LCD_POWER.value(1)

    return st7789.ST7789(
        Pin(48, Pin.OUT),
        Pin(47, Pin.OUT),
        Pin(46, Pin.OUT),
        Pin(45, Pin.OUT),
        Pin(42, Pin.OUT),
        Pin(41, Pin.OUT),
        Pin(40, Pin.OUT),
        Pin(39, Pin.OUT),
        Pin(8, Pin.OUT),
        Pin(9, Pin.OUT),
        170,
        320,
        reset=Pin(5, Pin.OUT),
        cs=Pin(6, Pin.OUT),
        dc=Pin(7, Pin.OUT),
        backlight=Pin(38, Pin.OUT),
        rotation=rotation,
        options=options,
        buffer_size= buffer_size)

class Buttons():
    def __init__(self):
        self.name = "t-display-s3"
        self.left = Pin(0, Pin.IN)
        self.right = Pin(14, Pin.IN)

[whatdtech]

Thank you so much @ubidefeo

[ubidefeo]

@whatdtech , did you manage? :)

[whatdtech]

Yes