Lilygo T8 ESP32s2 with 4MB Flash, 8MB RAM

[mallagant]

Hello,

I have tried to create my own board spec for Lilygo module, but I am getting following error. First I have got error about mismatching 2MB ram but installed 8MB which I have changed in configuration. But it probably caused that partitions does not match, which is what I understood from error invalid SPI size. I have even tried expand partition 4 to 512K, but it does not look like it helped.

Could you help me with that? Is there better place to discuss than here? It is very nice module with IPS display on board.

I (48) boot: ESP-IDF v4.2-dev-2554-gde733cdab 2nd stage bootloader
I (48) boot: compile time 08:24:52
I (48) boot: chip revision: 0
I (52) boot.esp32s2: SPI Speed : 40MHz
I (56) boot.esp32s2: SPI Mode : DIO
I (61) boot.esp32s2: SPI Flash Size : 4MB
I (66) boot: Enabling RNG early entropy source...
I (71) boot: Partition Table:
I (75) boot: ## Label Usage Type ST Offset Length
I (82) boot: 0 nvs WiFi data 01 02 00009000 00005000
I (90) boot: 1 otadata OTA data 01 00 0000e00 00002000
I (97) boot: 2 ota_0 OTA app 00 10 00010000 00160000
I (104) boot: 3 ota_1 OTA app 00 11 00170000 00160000
I (112) boot: 4 uf2 factory app 00 00 002d0000 00080000
I (120) boot: 5 user_fs Unknown data 01 81 00350000 00080000
I (127) boot: End of partition table
I (131) boot: Defaulting to factory image
E (136) esp_image: image at 0x2d0000 has invalid magic byte
W (142) esp_image: image at 0x2d0000 has invalid SPI mode 255
W (149) esp_image: image at 0x2d0000 has invalid SPI size 15
E (155) boot: Factory app partition is not bootable

There is also second issue with library for the display, https://github.com/devbis/st7789_mpy which is created for MicroPython, but it does not compile for CircuitPython. Link to lib machine_spi.h not found. I expect this may be no longer similar to original MicroPython library. But at least hint where should I look to modify would help a lot.

mall@mall-pc:~/circuitpython/ports/esp32s2$ make BOARD=lilygo USER_C_MODULES=/home/mall/st7789_mpy/
Use make V=1, make V=2 or set BUILD_VERBOSE similarly in your environment to increase build verbosity.
Including User C Module from /home/mall/st7789_mpy//st7789
/home/mall/st7789_mpy/st7789/st7789.c:31:10: fatal error: extmod/machine_spi.h: No such file or directory
#include "extmod/machine_spi.h"
^~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make: *** [../../py/mkrules.mk:55: build-lilygo/st7789/st7789.o] Error 1

Thank you very much
Richard

[tannewt]

Hi Richard! Thanks for adding a new ESP32-S2 board to CircuitPython. We're always happy to see more boards supported. The best place to get support developing with CircuitPython is the Adafruit Discord server, the #circuitpython channel specifically. You can join it by going to https://adafru.it/discord . Discord is blocked in China, so you can add me (tannewt) on WeChat if you are there.

The Factory app partition error is a red herring because we intend on placing the TinyUF2 bootloader there. Until then, the second stage bootloader should be able to try OTA0 and boot CircuitPython from it.

I don't recommend compiling in the ST7789 driver. We have a CircuitPython driver for it here that should work: https://github.com/adafruit/Adafruit_CircuitPython_ST7789 For boards with built-in displays, we tend to init them by default but the info on this board I found doesn't have it on the board. So, initing from user Python code should be fine.

[tannewt]

Here is a guide we have for adding a board in case you haven't seen it yet: https://learn.adafruit.com/how-to-add-a-new-board-to-circuitpython

[skieast]

HI Richard,
If you haven't gotten this working here is a link to my various board files for what I believe is the same board. I also tested the board with some CircuitPython code to drive the display. I'll have to search around and see if I can find that, I probably just used the driver Scott mentioned above
https://github.com/skieast/circuitpython/tree/main-copy/ports/esp32s2/boards/lilygo_ttgo_t8_s2

https://gist.github.com/skieast/8c00274f557113cad4d5d377cfd57a9d

[expandme-tech]

Hi All,

Can we somehow collaborate on it ?

Double checking - Are we speaking about these:

LILYGO® TTGO T8 ESP32-S2 V1.1
http://www.lilygo.cn/prod_view.aspx?TypeId=50033&Id=1300&FId=t3:50033:3

LILYGO® TTGO T8 ESP32-S2 V1.1 ST77789 1.14 Inch LCD Display
http://www.lilygo.cn/prod_view.aspx?TypeId=50033&Id=1321&FId=t3:50033:3

These modules has USB-C functionality selectable by 4 dip switches (Serial or chip USB), so does circuitpython need both functionality at once ?

Ideal will be to have it supported in this HW config: USB in ESP32-S2 mode, crystal connected and TF support enabled.

tinyUSB for ESP32-S2 explicitly refer TF card support cases https://www.esp32.com/viewtopic.php?t=15908#p60633 ?

Looks some trick is needed to https://github.com/Xinyuan-LilyGO/LilyGo-esp32s2-base to yse TF with battery (and I am unsure if we can read battery voltage on some ESP32-S2 pin)

BTW: Lilygo co has it's own github @LilyGO repo https://github.com/LilyGO , may be we can gently as them to host port files (I see there some Micropython stuff already anyway) ?

PS: I just see on Mouser new ESP32-S2 WROVER (2GB PSRAM) boards with 2 USB ports :-)

Have a nice day
Rudolf

[tannewt]

@expandme-tech We're more than happy to have board definitions for these in CircuitPython. The biggest hurdle for most boards is having a unique USB PID for each. Open source hardware can get one for free from https://pid.codes. Companies are expected to purchase a USB VID from the USB-IF (https://www.usb.org/getting-vendor-id).

@Xinyuan-LilyGO Do you have USB PIDs for each of these boards?

[expandme-tech]

So this board will be best fit for sample code with right free USB ID: https://github.com/eggsampler/ESP32-S2-Breakout (It's even has USB to MicroUSB now)

It has right license as MIT license 👍

Rudolf

[xmmpru83]

@skieast ur fork is broken. tinyusb outdated, some mistake on the board.h path as well...
just clone the latest CP, copy those 2 folders of the lily, modify board.c to point into supervisor/board.h like all other boards.
build flash and go.

[skieast]

I haven’t been looking closely at my fork. Mostly looking at some Wifi i2c issues. I’ll take a look and see what I can do. Thanks

On Fri, Dec 18, 2020 at 12:33 PM xmmpru83 ***@***.***> wrote: @skieast <https://github.com/skieast> ur fork is broken. tinyusb outdated, some mistake on the board.h path as well... just clone the latest CP, copy those 2 folders of the lily, modify board.c to point into supervisor/board.h like all other boards. build flash and go. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#3414 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAAGHKG7TQ7A7L6SZQL2ZQTSVO4CFANCNFSM4RLG3SBQ> .

-- Bruce Segal bsegal@skieast.net bsegal@6Lhasa.com 514-489-2301 anywhere 604-902-0862

[xmmpru83]

i think this board is too fresh.. very unsupported, im not able to make it run..

SPIWP:0xee
mode:DIO, clock div:2
load:0x3ffe6100,len:0x8
load:0x3ffe6108,len:0x17ec
load:0x4004c000,len:0x930
load:0x40050000,len:0x2cc8
entry 0x4004c1b4
ESP-ROM:esp32s2-rc4-20191025
Build:Oct 25 2019
rst:0x7 (TG0WDT_SYS_RST),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x4002ec30
0x4002ec30: _xt_highint4 at /root/circuitpython/ports/esp32s2/build-lilygo_ttgo_t8_s2_st7789/esp-idf/../../esp-idf/components/freertos/xtensa/xtensa_vector_defaults.S:100

@skieast any idea ?

[Larrxi]

Hey people!
I have the LCD variant and with the code from @skieast I successfully build and make and wrote circuitpyhon.
However when I change pins to OTG mode then I cant see anything not even on dmesg.
I am connected board USB C to my computer.
Am I missing something? Cant the circuitpython drive mount work this way?

[Larrxi]

I got it working by using the board files from espressif_saola_1_wroom.

Edit: Can also just use skieast board files and add CIRCUITPY_MODULE=wroom to mpconfigboard.mk

For the LCD example to work add the LCD pins from pins.c from board files from skieast.

     // 1.14 inch LCD ST7789
    { MP_ROM_QSTR(MP_QSTR_LCD_MISO), MP_ROM_PTR(&pin_GPIO4) },
    { MP_ROM_QSTR(MP_QSTR_LCD_MOSI), MP_ROM_PTR(&pin_GPIO35) },
    { MP_ROM_QSTR(MP_QSTR_LCD_CS), MP_ROM_PTR(&pin_GPIO34) },
    { MP_ROM_QSTR(MP_QSTR_LCD_CLK), MP_ROM_PTR(&pin_GPIO36) },
    { MP_ROM_QSTR(MP_QSTR_LCD_RST), MP_ROM_PTR(&pin_GPIO38) },
    { MP_ROM_QSTR(MP_QSTR_LCD_BL_CTR), MP_ROM_PTR(&pin_GPIO33) },
    { MP_ROM_QSTR(MP_QSTR_LCD_D_C), MP_ROM_PTR(&pin_GPIO37) },

If using skieast LCD example then comment out the second display initiation:

display = ST7789(
	display_bus, rotation=270, width=240, height=135, rowstart=40, colstart=53
)

"""
display = displayio.Display(
	display_bus, INIT_ST7789, rotation=270, width=240, height=135, rowstart=40, colstart=53, 
)
"""

Add the library files for

adafruit_display_text
adafruit_st7789

And it will say Hello World! on the LCD.

[ladyada]

hihi larry, if ya can submit a PR we'd love to get all the capabilities supported for this board!