Can't build firmware 2.1

[ntydelski]

I get this error every time I try to build the firmware "Linking CXX executable petdisk-max.elf
FAILED: petdisk-max.elf" I'm trying to flash my board. What am I doing wrong??
any help would be amazing.

[110/111] Generating binary image from built executable
esptool.py v4.10.0
Creating esp32 image...
Merged 2 ELF sections
Successfully created esp32 image.
Generated C:/Espressif/petdisk-max-2.1/build/bootloader/bootloader.bin
[111/111] C:\Windows\system32\cmd.exe /C "cd /D C:\Espress...Espressif/petdisk-max-2.1/build/bootloader/bootloader.bin"
Bootloader binary size 0x6570 bytes. 0xa90 bytes (9%) free.
[993/995] Linking CXX executable petdisk-max.elf
FAILED: petdisk-max.elf
C:\Windows\system32\cmd.exe /C "cd . && C:\Espressif\tools\xtensa-esp-elf\esp-14.2.0_20241119\xtensa-esp-elf\bin\xtensa-esp32-elf-g++.exe -mlongcalls -Wno-frame-address -fno-builtin-memcpy -fno-builtin-memset -fno-builtin-bzero -fno-builtin-stpcpy -fno-builtin-strncpy -Wl,--cref -Wl,--defsym=IDF_TARGET_ESP32=0 -Wl,--Map=C:/Espressif/petdisk-max-2.1/build/petdisk-max.map -Wl,--no-warn-rwx-segments -Wl,--orphan-handling=warn -fno-rtti -fno-lto -Wl,--gc-sections -Wl,--warn-common -T esp32.peripherals.ld -T esp32.rom.ld -T esp32.rom.api.ld -T esp32.rom.libgcc.ld -T esp32.rom.newlib-data.ld -T esp32.rom.syscalls.ld -T esp32.rom.newlib-funcs.ld -T memory.ld -T sections.ld @CMakeFiles\petdisk-max.elf.rsp -o petdisk-max.elf && cd ."
C:/Espressif/tools/xtensa-esp-elf/esp-14.2.0_20241119/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: esp-idf/freertos/libfreertos.a(app_startup.c.obj):(.literal.main_task+0x24): undefined reference to app_main' C:/Espressif/tools/xtensa-esp-elf/esp-14.2.0_20241119/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld.exe: esp-idf/freertos/libfreertos.a(app_startup.c.obj): in function main_task':
C:/Espressif/frameworks/esp-idf-v5.4.2/components/freertos/app_startup.c:206:(.text.main_task+0x95): undefined reference to `app_main'
collect2.exe: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
ninja failed with exit code 1, output of the command is in the C:\Espressif\petdisk-max-2.1\build\log\idf_py_stderr_output_3900 and C:\Espressif\petdisk-max-2.1\build\log\idf_py_stdout_output_3900
PS C:\Espressif\petdisk-max-2.1>

[ntydelski]

It seem like the main.cpp is missing is it somewhere else??

[bitfixer]

The esp32 project is in the idf directory, make sure you are building from there.

…

On Wed, Oct 1, 2025 at 1:20 PM ntydelski ***@***.***> wrote: *ntydelski* left a comment (bitfixer/petdisk-max#19) <#19 (comment)> It seem like the main.cpp is missing is it somewhere else?? — Reply to this email directly, view it on GitHub <#19 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AANYKOIJGSHV4RI4HHF7YCT3VQZSBAVCNFSM6AAAAACIARLBU6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTGNJXHE4TOOBWGU> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[bitfixer]

FYI, I just tested on the latest tag (v3.2) with esp32, and seems to be working. You'll see on the later tags that there's support for esp32s2 as well, that is for the petdisk v3 which will be released shortly. You might want to try on tag v3.2, I recommend IDF 5.4 as that's the one I've tested with the most recently.

[ntydelski]

Thank you so much for getting back to me.... I'm 100% doing something wrong. I just tried v3.2 I get this error its the same with issue when trying to build the older tag.. I'm unsure what the issue is??

CMake Error at C:/Espressif/frameworks/esp-idf-v5.4/tools/cmake/build.cmake:328 (message):
Failed to resolve component 'esp-fast-gpio' required by component 'main':
unknown name.
Call Stack (most recent call first):
C:/Espressif/frameworks/esp-idf-v5.4/tools/cmake/build.cmake:371 (__build_resolve_and_add_req)
C:/Espressif/frameworks/esp-idf-v5.4/tools/cmake/build.cmake:684 (__build_expand_requirements)
C:/Espressif/frameworks/esp-idf-v5.4/tools/cmake/project.cmake:722 (idf_build_process)
CMakeLists.txt:8 (project)

-- Configuring incomplete, errors occurred!
cmake failed with exit code 1, output of the command is in the C:\Espressif\petdisk-max\idf\build\log\idf_py_stderr_output_700 and C:\Espressif\petdisk-max\idf\build\log\idf_py_stdout_output_700
PS C:\Espressif\petdisk-max\idf>

[bitfixer]

Ah, try fetching submodules first. "git submodule update --init --recursive"

…

On Thu, Oct 2, 2025 at 8:06 AM ntydelski ***@***.***> wrote: *ntydelski* left a comment (bitfixer/petdisk-max#19) <#19 (comment)> Thank you so much for getting back to me.... I'm 100% doing something wrong. I just tried v3.2 I get this error its the same with issue when trying to build the older tag.. I'm unsure what the issue is?? CMake Error at C:/Espressif/frameworks/esp-idf-v5.4/tools/cmake/build.cmake:328 (message): Failed to resolve component 'esp-fast-gpio' required by component 'main': unknown name. Call Stack (most recent call first): C:/Espressif/frameworks/esp-idf-v5.4/tools/cmake/build.cmake:371 (__build_resolve_and_add_req) C:/Espressif/frameworks/esp-idf-v5.4/tools/cmake/build.cmake:684 (__build_expand_requirements) C:/Espressif/frameworks/esp-idf-v5.4/tools/cmake/project.cmake:722 (idf_build_process) CMakeLists.txt:8 (project) -- Configuring incomplete, errors occurred! cmake failed with exit code 1, output of the command is in the C:\Espressif\petdisk-max\idf\build\log\idf_py_stderr_output_700 and C:\Espressif\petdisk-max\idf\build\log\idf_py_stdout_output_700 PS C:\Espressif\petdisk-max\idf> — Reply to this email directly, view it on GitHub <#19 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AANYKOM3Y7N4P2TILYZVHR33VU5PTAVCNFSM6AAAAACIARLBU6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTGNRRGYZTQOBQHE> . You are receiving this because you commented.Message ID: ***@***.***>

[ntydelski]

Thanks for the info! I gave it a try — That did create a components folder, but nothing was populated at first. So, I cloned the [esp-fast-gpio] repository and added the files manually. After that, it managed to build successfully. I'm not sure if that's the correct approach, but I'll try it on hardware soon. Thanks again — this is a fun build!

[ntydelski]

I tried a 16GB and a 32GB card, but both gave me a "file not found" error. Do you have any suggestions for a brand of SD card? Also, how did you prepare it?

[bitfixer]

Both of those (16GB or 32GB) should work fine, the only prep is to format it with FAT32 with a single partition.I would double check the connections between the ESP32 and the SD card slot. For ESP32, the GPIO numbering for SD connection is: #define CS_PIN 4 #define MISO_PIN 19 #define MOSI_PIN 23 #define SCK_PIN 18 These are the GPIO numbers and not physical pin numbers, they will not necessarily match. Check your ESP32 package for the pinout.

…

On Wed, Oct 15, 2025 at 8:08 PM ntydelski ***@***.***> wrote: *ntydelski* left a comment (bitfixer/petdisk-max#19) <#19 (comment)> I tried a 16GB and a 32GB card, but both gave me a "file not found" error. Do you have any suggestions for a brand of SD card? Also, how did you prepare it? PXL_20251016_025429541.MP.jpg (view on web) <https://github.com/user-attachments/assets/17414485-d9c7-4ae2-8725-5c539270a674> — Reply to this email directly, view it on GitHub <#19 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AANYKOMET3HPI4CB4B23G633X4D4HAVCNFSM6AAAAACIARLBU6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTIMBYHE4TIOBTG4> . You are receiving this because you commented.Message ID: ***@***.***>

[ntydelski]

Doest this look normal to you?? I try catalog ,directory, load"$",8 nothing.. I do diRu9 it tells me device not present .. I have to be missing something small.. 😂

[ntydelski]

An update... I got it to work.... I had a bad sd card...
Thank you again!! Awesome device...