I am specifically looking for a non-Arduino based solution. Can anyone provide guidance or resources for finding or developing a driver for this display in ESP-IDF?

This is the Compiler Terminal output:
Building in release mode
Compiling .pio\build\esp32-s3-devkitc-1-myboard\lib099\LovyanGFX\lgfx\Fonts\IPA\lgfx_font_japan.c.o
Compiling .pio\build\esp32-s3-devkitc-1-myboard\lib099\LovyanGFX\lgfx\Fonts\efont\lgfx_efont_cn.c.o
Der Befehl "xtensa-esp32s3-elf-gcc" ist entweder falsch geschrieben oder
konnte nicht gefunden werden.
Compiling .pio\build\esp32-s3-devkitc-1-myboard\lib099\LovyanGFX\lgfx\Fonts\efont\lgfx_efont_ja.c.o
*** [.pio\build\esp32-s3-devkitc-1-myboard\lib099\LovyanGFX\lgfx\Fonts\IPA\lgfx_font_japan.c.o] Error 1
Der Befehl "xtensa-esp32s3-elf-gcc" ist entweder falsch geschrieben oder
konnte nicht gefunden werden.
*** [.pio\build\esp32-s3-devkitc-1-myboard\lib099\LovyanGFX\lgfx\Fonts\efont\lgfx_efont_cn.c.o] Error 1
Der Befehl "xtensa-esp32s3-elf-gcc" ist entweder falsch geschrieben oder
konnte nicht gefunden werden.
*** [.pio\build\esp32-s3-devkitc-1-myboard\lib099\LovyanGFX\lgfx\Fonts\efont\lgfx_efont_ja.c.o] Error 1
================================================================= [FAILED] Took 13.18 seconds =================================================================

Maybe someone can help me with this?

best regards MrRobot

• DS3231 Adafruit RTC module
• ADS1115 Adafruit 16bit ADC
• 2x MCP23017 Adafruit GPIO modules

What i realized is that while all these use the Wire.h library, when using LovyanGFX a different i2c library is internally used to drive the GT911 capacitive touch driver ic breaking the Wire.h functionality.

Is there a way to either use Wire.h for LovyanGFX or disable the touch functionality for a "brief" time freeing up the i2c bus or do I have to rewrite every module library to use the same library LovyanGFX uses?
Thanks in advance.

I recently purchased the Elecrow 5" HMI (DIS0750h) in hopes to build my own resource monitor screen for myself.

But I have watch several of the Tutorials and downloaded the lessons and the examples for this specific screen. But i have YET to get a single Arduino Sketch to properly compile.

I have tried reverting the LVGL to 8.3.11 from the newest 9.4.0, and it does change the errors but still no luck.
The errors seem to be declaration of function errors...

I have even TOTALLY uninstalled Arduino and reinstalled... including scrubbing all libraries. presently only running the libraries that are required, but still it won't compile. The latest attempt is with the "crowpanel-esp32-5.0" ino. and i get this error.
Compilation error: implicit declaration of function 'lv_mem_alloc'; did you mean 'lv_realloc'? [-Wimplicit-function-declaration]

Can anyone please help i feel like im running around in circles...
Thanks in advance..
Ettill

In a previous project I've tried all sorts of recommendations, changing timings, power, ram types, nothing has made any difference,

Does anyone have any ideas?

Thanks in advance

I am using Arduino 2.3.6 and the ESP32 core is 2.0.18. The error I get is:
ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0x1 (POWERON),boot:0x28 (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3808,len:0x4bc
load:0x403c9700,len:0xbd8
load:0x403cc700,len:0x2a0c
entry 0x403c98d0
E (132) esp_core_dump_flash: No core dump partition found!
E (132) esp_core_dump_flash: No core dump partition found!
E (378) gpio: gpio_set_level(227): GPIO output gpio_num error
E (379) gpio: gpio_set_level(227): GPIO output gpio_num error

Any ideas what I am doing wrong? Thank you.

When writing data to flash memory, you may notice the screen flickering (I'll describe it in words, since I can't post a discussion with screenshots).
When using writing to the file system (i.e. to flash memory), I observe a shift in the interface. This shift occurs specifically when writing to the file system (I use LittleFS). It happens quite quickly, so the image appears to flicker. Sometimes, this doesn't even happen.
In my case, this error is critical because my software is supposed to write new data to the file system every minute, and the user will have a very poor experience using this display.

There is also a more visual case: updating the firmware from the SD card using the built-in Update.h library. In the first case, the shift is small, since it only writes a couple of bytes, but when updating the firmware, about 1MB (the size of my software) is written from the SD card to flash memory, and this process takes about 10-15 seconds. And during this time, the image on the display flickers madly, shifts, glitches... in short, it looks absolutely terrible.

I'm almost certain it's a hardware issue. I've tried locking the display (thread safety, stopping the LVGL timer to prevent the image from refreshing), adding delays before and after writing, removing almost the entire interface and leaving only a thin progress bar line on the black background. But the flickering always occurs exactly when writing to flash memory.

P.S. Regarding the issue with not being able to post a discussion: If I add a link or screenshot, the following error appears:

{ "Code": 0, "Exception": "You can not submit this messege", "Class": "Exception" }

I’m evaluating two CrowPanel Advance models for a handheld, battery-powered tool we are looking to develop for use in the UK:
CrowPanel Advance 4.3″ HMI (ESP32-S3, 800×480)
CrowPanel Advance 3.5″ HMI (ESP32-S3, 480×320)

Could you please confirm whether both of these units are covered by your EU CE / RED compliance and share the relevant documents? Specifically:

1) Declarations & reports
A copy of the EU Declaration of Conformity naming the exact model/SKU (3.5″ and 4.3″)
List of applied standards (ideally these or equivalents):
EN 300 328 (2.4 GHz radio)
EN 301 489-1 & EN 301 489-17 (EMC for radio equipment)
EN 62368-1 (safety)
EN 62311/EN 50663 (RF exposure/assessment)
Any test reports (EMC/radio/safety) you can share or reference

2) Marking & labelling
Confirmation the products are CE-marked on the device and/or packaging, and shipped with the required EU/UK user information (manufacturer name/address, frequency band, max power, etc.)
If available, UKCA info (understood that CE is recognised in GB)

3) Radio / antenna
Is there a U.FL / external antenna option for either model, or a part number variant with an external antenna connector?
Stated max conducted power / EIRP in 2.4 GHz band

4) Battery & charging
Rated charge current (default ISET), recommended adapter spec, and any guidance on supported cell capacity (e.g., 5 000 mAh ok; charge time considerations)
Any protective features (OVP/OTP/short-circuit) and notes we should follow for enclosure thermal design

5) ESP-NOW
Confirmation that the plug-in wireless module bay is not required and we only need the on-board ESP32-S3 for Wi-Fi/BLE/ESP-NOW

Usage context (for your reference):
We’ll integrate the CrowPanel into a field tool (Building commissioning). The final product will be enclosed in a metal housing (design considerations still required around on board ESP32-S3 antennae if no external connection option is available) with a battery pack; we’ll complete the end-product conformity assessment (EMC, safety, labelling) and maintain a technical file, but we’d like to include your DoC and test references for the display/HMI.

If you can attach the PDF DoC(s) for the 3.5″ and 4.3″ Advance models (or provide download links), that would be perfect.

Thank you