mpremote can cp / ls / ... only ones - how i stop lvgl ?

[fabse-hack]

mpremote can cp / ls / ... only ones - how i stop lvgl ?

i flash my esp32 s3 successfully and the ili9341 is working too.

But i have a problem:

I upload my main.py and restart the controller, then the main.py is executed. When i upload another file or overwrite the main.py is not successful. The list command mpremote ls is not working too.
-> i think the lvgl is blocking this....

The touch is working (is maybe 40 pixel to much down and 20pixel to much right), how i handle the whole touch thing and how i calibrate it ????

th = task_handler.TaskHandler()
my esp32 have dula core, can i put the lvgl to the other cpu with multi threading?
and why i have to execute the task_handler.TaskHandler() only ones? and why i have to give it to the variable th ?

.....headache

here my code:

import lcd_bus
from micropython import const
import machine
import time

# display settings
_WIDTH = const(240)
_HEIGHT = const(320)
_BL = const(45)
_RST = const(4)
_DC = const(2)


# T_CLK → SCK (SPI Clock)
# T_CS → Touch Chip Select (dein _TOUCH_CS)
# T_DIN → MOSI (Master Out Slave In)
# T_DO → MISO (Master In Slave Out)
# T_IRQ → (optional, für Interrupt, meist nicht zwingend nötig)
# GND/VCC → Stromversorgung

_MOSI = const(11)
_MISO = const(13)
_SCK = const(12)
_HOST = const(1)  # SPI3

_LCD_CS = const(10)
_LCD_FREQ = const(80000000)

_TOUCH_CS = const(18)
_TOUCH_FREQ = const(20000000)


spi_bus = machine.SPI.Bus(
    host=_HOST,
    mosi=_MOSI,
    miso=_MISO,
    sck=_SCK
)

display_bus = lcd_bus.SPIBus(
    spi_bus=spi_bus,
    freq=_LCD_FREQ,
    dc=_DC,
    cs=_LCD_CS,
)


# we are going to let the display driver sort out the best freame buffer size and where to allocate it to.
# _BUFFER_SIZE = _WIDTH * 10  # Reduzierter Buffer für Stabilität
# fb1 = display_bus.allocate_framebuffer(_BUFFER_SIZE, lcd_bus.MEMORY_INTERNAL | lcd_bus.MEMORY_DMA)
# fb2 = display_bus.allocate_framebuffer(_BUFFER_SIZE, lcd_bus.MEMORY_INTERNAL | lcd_bus.MEMORY_DMA)

import ili9341  # NOQA
import lvgl as lv  # NOQA

display = ili9341.ILI9341(
    data_bus=display_bus,
    display_width=_WIDTH,
    display_height=_HEIGHT,
    backlight_pin=_BL,
    color_space=lv.COLOR_FORMAT.RGB565,
    color_byte_order=ili9341.BYTE_ORDER_RGB,
    rgb565_byte_swap=True,
)


import task_handler 
import xpt2046


display.set_power(True)
display.init(1)
display.set_rotation(lv.DISPLAY_ROTATION._90)

touch_dev = machine.SPI.Device(
    spi_bus=spi_bus,
    freq=_TOUCH_FREQ,
    cs=_TOUCH_CS
)

indev = xpt2046.XPT2046(touch_dev)


th = task_handler.TaskHandler()

scrn = lv.screen_active()
scrn.set_style_bg_color(lv.color_hex(0x000000), 0)

slider = lv.slider(scrn)
slider.set_size(300, 50)
slider.center()

label = lv.label(scrn)
label.set_text('HELLO WORLD!')
label.align(lv.ALIGN.CENTER, 0, -50)

PS C:\Users\fabse\Documents\Visual Studio Code\hello_world_lvgl> python -m mpremote connect COM6

LVGL (9.2.2) MicroPython (1.24.1) Binding compiled on 2025-05-25; Generic ESP32S3 module with Octal-SPIRAM with ESP32S3
Type "help()" for more information.
>>> import os
>>> os.listdir()
['boot.py', 'main.py']
>>> Ctrl-x

A fatal error occurred. The crash dump printed below may be used to help
determine what caused it. If you are not already running the most recent
version of MicroPython, consider upgrading. New versions often fix bugs.

To learn more about how to debug and/or report this crash visit the wiki
page at: https://github.com/micropython/micropython/wiki/ESP32-debugging

LVGL MicroPython
IDF version : c9763f62
Machine     : Generic ESP32S3 module with Octal-SPIRAM with ESP32S3

Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.

Core  1 register dump:
PC      : 0x421b8da7  PS      : 0x00060630  A0      : 0x8200304a  A1      : 0x3fcbe110
A2      : 0x02000001  A3      : 0x00000002  A4      : 0x000000ff  A5      : 0x0000ff00  
A6      : 0x00ff0000  A7      : 0xff000000  A8      : 0x820b17fc  A9      : 0x3fcbe110
A10     : 0x02000001  A11     : 0x00000002  A12     : 0x000001f3  A13     : 0x00000001
A14     : 0x00000000  A15     : 0x00000002  SAR     : 0x00000006  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x0200000d  LBEG    : 0x40056f08  LEND    : 0x40056f12  LCOUNT  : 0x00000000


Backtrace: 0x421b8da4:0x3fcbe110 0x42003047:0x3fcbe130 0x42002d9d:0x3fcbe170 0x420d142f:0x3fcbe1b0



ELF file SHA256: 05dd2b928
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "C:\Users\fabse\AppData\Roaming\Python\Python312\site-packages\mpremote\__main__.py", line 6, in <module>
    sys.exit(main.main())
             ^^^^^^^^^^^
  File "C:\Users\fabse\AppData\Roaming\Python\Python312\site-packages\mpremote\main.py", line 577, in main
    do_repl(state, argparse_repl().parse_args([]))
  File "C:\Users\fabse\AppData\Roaming\Python\Python312\site-packages\mpremote\repl.py", line 89, in do_repl
    do_repl_main_loop(
  File "C:\Users\fabse\AppData\Roaming\Python\Python312\site-packages\mpremote\repl.py", line 54, in do_repl_main_loop
    console_out_write(console_data_out)
  File "C:\Users\fabse\AppData\Roaming\Python\Python312\site-packages\mpremote\repl.py", line 83, in console_out_write
    console.write(b)
  File "C:\Users\fabse\AppData\Roaming\Python\Python312\site-packages\mpremote\console.py", line 119, in write
    buf = buf.decode() if isinstance(buf, bytes) else buf
          ^^^^^^^^^^^^
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xf8 in position 15: invalid start byte


PS C:\Users\fabse\Documents\Visual Studio Code\hello_world_lvgl> python -m mpremote connect COM6 ls

b'OK\r\n\r\nA fatal error occurred. The crash dump printed below may be used to help\r\ndetermine what caused it. If you are not already running the most recent\r\nversion of MicroPython, consider upgrading. New versions often fix bugs.\r\n\r\nTo learn more about how to debug and/or report this crash visit the wiki\r\npage at: https://github.com/micropython/micropython/wiki/ESP32-debugging\r\n\r\nLVGL MicroPython \r\nIDF version : c9763f62\r\nMachine     : Generic ESP32S3 
module with Octal-SPIRAM with ESP32S3\r\n\r\nGuru Meditation Error: Core  1 panic\'ed (InstrFetchProhibited). Exception was unhandled.\r\n\r\nCore  1 register 
dump:\r\nPC      : 0x00000000  PS      : 0x00060630  A0      : 0x8200304a  A1      : 0x3fcbe110  \r\nA2      : 0x3c216648  A3      : 0x00000002  A4      : 0x000000ff  A5      : 0x0000ff00  \r\nA6      : 0x00ff0000  A7      : 0xff000000  A8      : 0x821b8dac  A9      : 0x3fcbe100  \r\nA10     : 0x3c216648  A11     : 0x00000002  A12     : 0x000001f3  A13     : 0x00000001  \r\nA14     : 0x00000000  A15     : 0x00000002  SAR     : 0x00000006  EXCCAUSE: 0x00000014  \r\nEXCVADDR: 0x00000000  LBEG    : 0x40056f08  LEND    : 0x40056f12  LCOUNT  : 0x00000000  \r\n\r\n\r\nBacktrace: 0xfffffffd:0x3fcbe110 0x42003047:0x3fcbe130 0x42002d9d:0x3fcbe170 0x420d142f:0x3fcbe1b0\r\n\r\n\r\n\r\n\r\nELF file SHA256: 05dd2b928\r\n\r\nRebooting...\r\n\xf8\x80\x80ESP-ROM:esp32s3-20210327\r\nBuild:Mar 27 2021\r\nrst:0xc (RTC_SW_CPU_RST),boot:0x8 (SPI_FAST_FLASH_BOOT)\r\nSaved PC:0x40383266\r\nSPIWP:0xee\r\nmode:DIO, clock div:1\r\nload:0x3fce3820,len:0x1108\r\nload:0x403c9700,len:0x4\r\nload:0x403c9704,len:0xbdc\r\nload:0x403cc700,len:0x2f4c\r\nentry 0x403c989c\r\nLVGL (9.2.2) MicroPython (1.24.1) Binding compiled on 2025-05-25; Generic ESP32S3 module with Octal-SPIRAM with ESP32S3\r\nType "help()" for more information.\r\n>>> '
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "C:\Users\fabse\AppData\Roaming\Python\Python312\site-packages\mpremote\__main__.py", line 6, in <module>
    sys.exit(main.main())
             ^^^^^^^^^^^
  File "C:\Users\fabse\AppData\Roaming\Python\Python312\site-packages\mpremote\main.py", line 569, in main
    handler_func(state, args)
  File "C:\Users\fabse\AppData\Roaming\Python\Python312\site-packages\mpremote\commands.py", line 327, in do_filesystem
    state.ensure_raw_repl()
  File "C:\Users\fabse\AppData\Roaming\Python\Python312\site-packages\mpremote\main.py", line 511, in ensure_raw_repl
    self.transport.enter_raw_repl(soft_reset=soft_reset)
  File "C:\Users\fabse\AppData\Roaming\Python\Python312\site-packages\mpremote\transport_serial.py", line 169, in enter_raw_repl
    raise TransportError("could not enter raw repl")
mpremote.transport.TransportError: could not enter raw repl
PS C:\Users\fabse\Documents\Visual Studio Code\hello_world_lvgl> 

with main.py contains: print("hello") everything is working normal.

PS C:\Users\fabse\Documents\Visual Studio Code\hello_world_lvgl> python -m mpremote connect COM6 cp main.py :
cp main.py :
Connected to MicroPython at COM6
Use Ctrl-] or Ctrl-x to exit this shell

MPY: soft reboot
hello
LVGL (9.2.2) MicroPython (1.24.1) Binding compiled on 2025-05-25; Generic ESP32S3 module with Octal-SPIRAM with ESP32S3
Type "help()" for more information.
>>>
MPY: soft reboot
hello
LVGL (9.2.2) MicroPython (1.24.1) Binding compiled on 2025-05-25; Generic ESP32S3 module with Octal-SPIRAM with ESP32S3
Type "help()" for more information.
>>>
MPY: soft reboot
hello
LVGL (9.2.2) MicroPython (1.24.1) Binding compiled on 2025-05-25; Generic ESP32S3 module with Octal-SPIRAM with ESP32S3
Type "help()" for more information.
>>>
PS C:\Users\fabian fritz\Documents\Visual Studio Code\hello_world_lvgl> python -m mpremote connect COM6 ls
ls :
         139 boot.py
          14 main.py
PS C:\Users\fabse\Documents\Visual Studio Code\hello_world_lvgl> 

[kdschlosser]

That's an issue in MPRemote and not in the binding.

File "C:\Users\fabse\AppData\Roaming\Python\Python312\site-packages\mpremote\console.py", line 119, in write
    buf = buf.decode() if isinstance(buf, bytes) else buf
          ^^^^^^^^^^^^
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xf8 in position 15: invalid start byte

But set that aside anyhow. If you can decode the backtrace data that is seen it would be helpful to nail down what is causing the actual crash to happen. This is the backtrace

0x421b8da4:0x3fcbe110 0x42003047:0x3fcbe130 0x42002d9d:0x3fcbe170 0x420d142f:0x3fcbe1b0

[fabse-hack]

hmm thanks.

But i'm not understand, why a small main.py not have any problem ?

and my second problem is. How i can calibrate the touch ? i'm using XPT2046

[fabse-hack]

@kdschlosser can you give me an example code, how i can calibrate the touch ? because on my ili9341 is not 100% on the right position .....

[kdschlosser]

calibrating the touch is easy...

indev = xpt2046.XPT2046(...)

if not indev.is_calibrated:
    indev.calibrate()

That's all there is to it. Start the task handler after you run the calibration. Make sure to run the calibration after you power the display and call the init method.

[fabse-hack]

omg, is easy :D ... thanks!

[kdschlosser]

no worries m8. Eazy peazy.