Build error in blemesh_bridge with ESP-IDF v5.5.2

[svn-matterize]

Description

I am building the blemesh_bridge example from esp-matter v1.5.0:
https://github.com/espressif/esp-matter/tree/release/v1.5/examples/bridge_apps/blemesh_bridge

Environment

• esp-matter: v1.5.0
• ESP-IDF: v5.5.2

Issue

The build fails with the following error:

undefined reference to `bt_mesh_ble_adv_send`

build.log

The same project builds successfully when using ESP-IDF v5.4.3.

I have also verified that the light example builds successfully with esp-matter v1.5.0 and ESP-IDF v5.5.2.

Question

• How can BLE Mesh in ESP-IDF v5.5.2 be made compatible with esp-matter v1.5.0 for the blemesh_bridge example?
• Are there any required configuration changes, patches, or API updates needed to resolve the bt_mesh_ble_adv_send linker error?

Any guidance would be appreciated.

[DejinChen]

Could you try static inline void for ble_mesh_ble_adv_send function?

[svn-matterize]

@DejinChen,
Thanks for the reply,After adding static inline void, the build succeeds, but Bluetooth initialization and ble mesh still doesn’t happen.Do you have any idea what might be causing this when using an external platform with the following configuration?

# Enable External Platform
CONFIG_CHIP_ENABLE_EXTERNAL_PLATFORM=y
CONFIG_CHIP_EXTERNAL_PLATFORM_DIR="../../../../examples/common/blemesh_platform/platform/ESP32_custom"
CONFIG_CHIP_EXTERNAL_PLATFORM_INCLUDE_DIR="../../../../examples/common/blemesh_platform"

I (24) boot: ESP-IDF v5.5.2 2nd stage bootloader
I (25) boot: compile time Jan 29 2026 10:19:29
I (25) boot: Multicore bootloader
I (25) boot: chip revision: v0.2
I (28) boot: efuse block revision: v1.3
I (31) boot.esp32s3: Boot SPI Speed : 80MHz
I (35) boot.esp32s3: SPI Mode       : DIO
I (39) boot.esp32s3: SPI Flash Size : 4MB
I (43) boot: Enabling RNG early entropy source...
I (47) boot: Partition Table:
I (50) boot: ## Label            Usage          Type ST Offset   Length
I (56) boot:  0 esp_secure_cert  unknown          3f 06 0000d000 00002000
I (63) boot:  1 nvs              WiFi data        01 02 00010000 0000e000
I (69) boot:  2 nvs_keys         NVS keys         01 04 0001e000 00001000
I (76) boot:  3 otadata          OTA data         01 00 0001f000 00002000
I (82) boot:  4 phy_init         RF data          01 01 00021000 00001000
I (89) boot:  5 ota_0            OTA app          00 10 00030000 001d0000
I (95) boot:  6 ota_1            OTA app          00 11 00200000 001d0000
I (102) boot:  7 fctry            WiFi data        01 02 003d0000 00006000
I (108) boot: End of partition table
I (112) boot: No factory image, trying OTA 0
I (116) esp_image: segment 0: paddr=00030020 vaddr=3c110020 size=3c560h (247136) map
I (167) esp_image: segment 1: paddr=0006c588 vaddr=3fc99100 size=03a90h ( 14992) load
I (170) esp_image: segment 2: paddr=00070020 vaddr=42000020 size=102e4ch (1060428) map
I (357) esp_image: segment 3: paddr=00172e74 vaddr=3fc9cb90 size=0176ch (  5996) load
I (359) esp_image: segment 4: paddr=001745e8 vaddr=40374000 size=15054h ( 86100) load
I (380) esp_image: segment 5: paddr=00189644 vaddr=50000000 size=00020h (    32) load
I (389) boot: Loaded app from partition at offset 0x30000
I (415) boot: Set actual ota_seq=1 in otadata[0]
I (415) boot: Disabling RNG early entropy source...
I (424) cpu_start: Multicore app
I (433) cpu_start: GPIO 44 and 43 are used as console UART I/O pins
I (433) cpu_start: Pro cpu start user code
I (433) cpu_start: cpu freq: 160000000 Hz
I (435) app_init: Application information:
I (439) app_init: Project name:     blemesh_bridge
I (443) app_init: App version:      1.0
I (447) app_init: Compile time:     Jan 29 2026 10:19:11
I (452) app_init: ELF file SHA256:  590a2b475...
I (456) app_init: ESP-IDF:          v5.5.2
I (460) efuse_init: Min chip rev:     v0.0
I (464) efuse_init: Max chip rev:     v0.99 
I (468) efuse_init: Chip rev:         v0.2
I (472) heap_init: Initializing. RAM available for dynamic allocation:
I (478) heap_init: At 3FCB3600 len 00036110 (216 KiB): RAM
I (483) heap_init: At 3FCE9710 len 00005724 (21 KiB): RAM
I (488) heap_init: At 3FCF0000 len 00008000 (32 KiB): DRAM
I (494) heap_init: At 600FE000 len 00001FE8 (7 KiB): RTCRAM
I (500) spi_flash: detected chip: gd
I (502) spi_flash: flash io: dio
W (505) spi_flash: Detected size(8192k) larger than the size in the binary image header(4096k). Using the size in the binary image header.
I (519) sleep_gpio: Configure to isolate all GPIO pins in sleep state
I (524) sleep_gpio: Enable automatic switching of GPIO sleep configuration
I (530) coexist: coex firmware version: 7260f71
I (535) coexist: coexist rom version e7ae62f
I (539) main_task: Started on CPU0
I (559) main_task: Calling app_main()
I (579) pp: pp rom version: e7ae62f
I (579) net80211: net80211 rom version: e7ae62f
I (599) wifi:wifi driver task: 3fceeaa8, prio:23, stack:6656, core=0
I (599) wifi:wifi firmware version: ee91c8c
I (599) wifi:wifi certification version: v7.0
I (599) wifi:config NVS flash: enabled
I (599) wifi:config nano formatting: disabled
I (609) wifi:Init data frame dynamic rx buffer num: 32
I (609) wifi:Init static rx mgmt buffer num: 5
I (609) wifi:Init management short buffer num: 32
I (619) wifi:Init dynamic tx buffer num: 32
I (619) wifi:Init static tx FG buffer num: 2
I (629) wifi:Init static rx buffer size: 1600
I (629) wifi:Init static rx buffer num: 10
I (639) wifi:Init dynamic rx buffer num: 32
I (639) wifi_init: rx ba win: 6
I (639) wifi_init: accept mbox: 6
I (639) wifi_init: tcpip mbox: 32
I (649) wifi_init: udp mbox: 6
I (649) wifi_init: tcp mbox: 6
I (649) wifi_init: tcp tx win: 5760
I (659) wifi_init: tcp rx win: 5760
I (659) wifi_init: tcp mss: 1440
I (659) wifi_init: WiFi IRAM OP enabled
I (669) wifi_init: WiFi RX IRAM OP enabled
I (679) chip[DL]: NVS set: chip-counters/reboot-count = 1 (0x1)
I (679) chip[DL]: NVS set: chip-config/unique-id = "5FA202B5FEB652C8"
I (679) chip[DL]: Starting ESP WiFi layer
I (689) phy_init: phy_version 711,97bcf0a2,Aug 25 2025,19:04:10
W (689) phy_init: failed to load RF calibration data (0x1102), falling back to full calibration
I (739) phy_init: Saving new calibration data due to checksum failure or outdated calibration data, mode(2)
I (749) wifi:mode : sta (cc:8d:a2:29:f0:7c)
I (749) wifi:enable tsf
W (749) wifi:Haven't to connect to a suitable AP now!
I (749) chip[DL]: I (749) chip[DL]: Posting ESPSystemEvent: Wifi Event with eventId : 43Done driving station state, nothing else to do...

W (759) wifi:Haven't to connect to a suitable AP now!
I (759) chip[DL]: Done driving station state, nothing else to do...
I (759) chip[DL]: Posting ESPSystemEvent: Wifi Event with eventId : 2
I (769) chip[SVR]: Initializing subscription resumption storage...
I (779) chip[SVR]: Server initializing...
I (789) chip[TS]: Last Known Good Time: [unknown]
I (789) chip[TS]: Setting Last Known Good Time to firmware build time 2023-10-14T01:16:48
I (799) chip[DMG]: AccessControl: initializing
I (799) chip[DMG]: Examples::AccessControlDelegate::Init
I (809) chip[DMG]: AccessControl: setting
I (809) chip[DMG]: DefaultAclStorage: initializing
I (819) chip[DMG]: DefaultAclStorage: 0 entries loaded
I (819) chip[SVR]: WARNING: mTestEventTriggerDelegate is null
E (829) chip[SVR]: ERROR setting up transport: 3
I (829) data_model: Cannot find minimum unused endpoint_id, try to find in the previous namespace
I (829) chip[DL]: I (839) data_model: Failed to open node namespace
WIFI_EVENT_STA_START
E (849) esp_matter_bridge: Error opening partition nvs namespace bridge. Err: 4354
W (849) wifi:Haven't to connect to a suitable AP now!
E (859) esp_matter_bridge: Error opening partition nvs namespace bridge. Err: 4354
I (859) chip[DL]: I (869) esp_matter_bridge: The bridged endpoint id array is not found in partition nvs, Try to initialize it
Done driving station state, nothing else to do...
I (879) main_task: Returned from app_main()

[DejinChen]

Could you try this patch on releasev1.5 branch?
There may be some issues with the data model, we will fix it and this example ASAP.

[svn-matterize]

@DejinChen,
I tried to build with the patch, but i got error as

 /home/sunmac/office/esp/source/esp-matter/release-v1.5/examples/common/blemesh_platform/platform/ESP32_custom/nimble/BLEManagerImpl.cpp -o obj/ABS_PATH/home/sunmac/office/esp/source/esp-matter/release-v1.5/examples/common/blemesh_platform/platform/ESP32_custom/nimble/ESP32_custom.BLEManagerImpl.cpp.o
In file included from /home/sunmac/office/esp/source/esp-idf/v5.5.2/components/bt/esp_ble_mesh/core/proxy_server.h:13,
                 from /home/sunmac/office/esp/source/esp-idf/v5.5.2/components/bt/esp_ble_mesh/api/esp_ble_mesh_defs.h:14,
                 from /home/sunmac/office/esp/source/esp-idf/v5.5.2/components/bt/esp_ble_mesh/api/core/include/esp_ble_mesh_ble_api.h:10,
                 from /home/sunmac/office/esp/source/esp-matter/release-v1.5/examples/common/blemesh_platform/platform/ESP32_custom/nimble/BLEManagerImpl.cpp:84:
/home/sunmac/office/esp/source/esp-idf/v5.5.2/components/bt/esp_ble_mesh/core/net.h: In function 'void bt_mesh_net_recv(net_buf_simple*, int8_t, bt_mesh_net_if)':
/home/sunmac/office/esp/source/esp-idf/v5.5.2/components/bt/esp_ble_mesh/core/net.h:475:34: error: expected primary-expression before '.' token
  475 |     struct bt_mesh_net_rx rx = { .ctx.recv_rssi = rssi };

Note
The Given patch for release/v1.5 and esp-idf v5.4.1
BLE initialization and Ble Mesh working.
But Bridge device after commissioned, it doesn't show the on-off nodes!

[DejinChen]

On esp_matter release v1.5, try this ble_mesh_with_data_model_fix.patch. For the compiling error on idf 5.5.2, try this commit. espressif/esp-idf@7ae9d8d

[svn-matterize]

@DejinChen,
After apply the patch to release v1.5 and commit to the esp-idf v5.5.2, now blemesh_bridge example works and the node device is visible in the home app.