Flowcode Support Board

Posted: **Tue Nov 25, 2025 9:10 pm**

Hello FC team,

if I do a init of ESP32 WLAN and BT component together I´ll get the follwing compiler message.

[5/7] Linking CXX executable esp-project.elf
[6/7] Generating binary image from built executable
esptool.py v3.3.4-dev
Creating esp32 image...
Merged 27 ELF sections
Successfully created esp32 image.
Generated C:/ESP32/YGE_DBU_Texy/YGE_DBU_Texy_V_1_8_3/build/esp-project.bin
[7/7] cmd.exe /C "cd /D C:\ESP32\YGE_DBU_Texy\YGE_DBU_Texy_V_1_8_3\build\esp-idf\esptool_py && C:\ESP-IDF\-tools\python_env\idf4.4_py3.7_env\Scripts\python.exe C:/Users/dirkb/Desktop/esp-idf/components/partition_table/check_sizes.py --offset 0x8000 partition --type app C:/ESP32/YGE_DBU_Texy/YGE_DBU_Texy_V_1_8_3/build/partition_table/partition-table.bin C:/ESP32/YGE_DBU_Texy/YGE_DBU_Texy_V_1_8_3/build/esp-project.bin"

FAILED: esp-idf/esptool_py/CMakeFiles/app_check_size C:/ESP32/YGE_DBU_Texy/YGE_DBU_Texy_V_1_8_3/build/esp-idf/esptool_py/CMakeFiles/app_check_size

cmd.exe /C "cd /D C:\ESP32\YGE_DBU_Texy\YGE_DBU_Texy_V_1_8_3\build\esp-idf\esptool_py && C:\ESP-IDF\-tools\python_env\idf4.4_py3.7_env\Scripts\python.exe C:/Users/dirkb/Desktop/esp-idf/components/partition_table/check_sizes.py --offset 0x8000 partition --type app C:/ESP32/YGE_DBU_Texy/YGE_DBU_Texy_V_1_8_3/build/partition_table/partition-table.bin C:/ESP32/YGE_DBU_Texy/YGE_DBU_Texy_V_1_8_3/build/esp-project.bin"
Error: app partition is too small for binary esp-project.bin size 0x13c100:
- Part 'factory' 0/0 @ 0x10000 size 0x100000 (overflow 0x3c100)
ninja: build stopped: subcommand failed.
ninja failed with exit code 1
Executing action: all (aliases: build)
Running ninja in directory C:\ESP32\YGE_DBU_Texy\YGE_DBU_Texy_V_1_8_3\build
Executing "ninja all"...

Is this a known issue?

BR
Dirk

Posted: **Tue Nov 25, 2025 9:49 pm**

Hi Dirk,

It's complaining that the app partition isn't large enough (though if all you are doing is initialising the WiFi and BT I would be surprised that this is the case)

You will need to define a custom partition table - and point to that using menuconfig - allocating more memory to the application.

Something like

Code: Select all

# Name,   Type, SubType, Offset,  Size, Flags
# Note: if you have increased the bootloader size, make sure to update the offsets to avoid overlap
nvs,      data, nvs,     0x9000,  0x6000,
phy_init, data, phy,     0xf000,  0x1000,
factory,  app,  factory, 0x10000, 2M

Assuming you are using a 4MB (or above part).

Save as partition.csv (name to suit) and use menuconfig partition table to point to this.

Then recompile - and test again.

Might also be worth setting compiler options to 'size' (again using menuconfig)

Martin

Flowcode Support Board

ESP32 WLAN init and BT init Problem

ESP32 WLAN init and BT init Problem

Re: ESP32 WLAN init and BT init Problem