MqttManager - Host is unreachable

[stepa-ict]

Hello folks,
I have nspanel manager 2.1.3-stable and nspanel (tried 2.1.3-stable and 2.1.5-beta).

Noticed the strange issue with the connection to the MQTT broker. The panel is unable to connect to the mqtt broken IP. From the logs, it seems like the mqtt_client is trying to get to the IP before the WiFi is connected successfully.
Did I do something wrong? Is there any fix for this?

Also, is firmware ver 2.15-beta compatible with manager 2.13-stable?

Thanks a lot for help in advance.

[16:22:43]W (1199) ADC: legacy driver is deprecated, please migrate to esp_adc/adc_oneshot.h[16:22:43]I (1252) LittleFS: Initializing LittleFS. [16:22:44]I (1252) LittleFS: Mounted LittleFS successfully! [16:22:44]I (1302) WiFiManager: Will connect to WiFi sapice-VAF [16:22:44]W (1302) wifi:Password length matches WPA2 standards, authmode threshold changes from OPEN to WPA2 [16:22:44]I (1402) MqttManager: Starting MQTTManager, will connect to 172.30.30.3:1883 [16:22:44]E (1412) esp-tls: [sock=54] connect() error: Host is unreachable [16:22:44]E (1412) transport_base: Failed to open a new connection: 32772 [16:22:44]E (1422) mqtt_client: Error transport connect [16:22:44]I (1422) MqttManager: MQTT_EVENT_ERROR [16:22:44]E (1432) MqttManager: Error report from esp-tls! [16:22:44]I (1432) MqttManager: Last errno string (Success) [16:22:44]W (1442) MqttManager: Lost connection to MQTT server. [16:22:44]I (1442) MqttManager: Started MQTT client. [16:22:44]D (1452) MqttManager: Subscribing to 'nspanel/E4:65:B8:48:8C:D4/relay1_cmd' [16:22:44]E (1452) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/relay1_cmd'. Not connected to MQTT server. [16:22:44]D (1472) MqttManager: Subscribing to 'nspanel/E4:65:B8:48:8C:D4/relay2_cmd' [16:22:44]E (1472) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/relay2_cmd'. Not connected to MQTT server. [16:22:44]I (1492) Nextion: Initializing Nextion display. [16:22:44]D (1502) Nextion: Turning Nextion display off and on again. [16:22:44]I (1502) Nextion: Started Nextion uart event handler. [16:22:44]I (1592) WiFiManager: Connected to WiFi. [16:22:44]W (2052) Nextion: Unknown event data from Nextion: � [16:22:44]W (2052) Nextion: Unknown event data from Nextion: � [16:22:44]W (2052) Nextion: Unknown event data from Nextion: f [16:22:45]I (2612) WiFiManager: Got IP: 172.30.30.125, Netmask: 255.255.255.0, Gateway: 172.30.30.1 [16:22:45]W (3052) Nextion: Unknown event data from Nextion: f [16:22:46]W (4062) Nextion: Unknown event data from Nextion: f [16:22:46]W (4252) Nextion: Did not receive the 'NSPM'-flag on screen startup. Are you running the NSPanel Manager GUI/TFT? [16:22:46]I (4252) Nextion: Trying to connect to Nextion display. [16:22:46]W (4262) Nextion: Unknown event data from Nextion: � [16:22:47]D (4502) Nextion: Sending connect command to panel. [16:22:47]D (4502) Nextion: Connected to Nextion display, comok data: comok 2,30614-0,NX4832F035_011C,115,61744,37B434019E999530,16777216 [16:22:47]I (4512) Nextion: Connected to Nextion display. [16:22:47]I (4512) Nextion: Nextion init complete. [16:22:47]D (4522) MqttManager: Subscribing to 'nspanel/E4:65:B8:48:8C:D4/screen_cmd' [16:22:47]E (4522) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/screen_cmd'. Not connected to MQTT server. [16:22:47]D (4532) MqttManager: Subscribing to 'nspanel/E4:65:B8:48:8C:D4/brightness_cmd' [16:22:47]E (4542) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/brightness_cmd'. Not connected to MQTT server. [16:22:47]D (4552) MqttManager: Subscribing to 'nspanel/E4:65:B8:48:8C:D4/brightness_screensaver_cmd' [16:22:47]E (4562) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/brightness_screensaver_cmd'. Not connected to MQTT server. [16:22:47]D (4582) MqttManager: Subscribing to 'nspanel/E4:65:B8:48:8C:D4/screensaver_mode_cmd' [16:22:47]E (4582) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/screensaver_mode_cmd'. Not connected to MQTT server. [16:22:47]D (5072) InterfaceManager: Got sleep event from InterfaceManager and screensaver is not blocked. Will switch to screensaver page.

[stepa-ict]

Hello,
Any help here? I'm still unable to connect to the mqtt broker.

Thanks,
Vlada

[tpanajott]

Ohz sorry. This must've slipped through the cracks.

Looking at the logs this seems to be the issue: MqttManager: Starting MQTTManager, will connect to 172.30.30.3:1883

That IP doesn't look quite right. Are you sure that's the IP to your MQTT-broker? It looks like a docker internal NAT network.

[stepa-ict]

Hi,
No worries.

It is my local network range. As you can see, the panel itself got IP from that range.
WiFiManager: Got IP: 172.30.30.125, Netmask: 255.255.255.0, Gateway: 172.30.30.1

Also, a bunch of different devices have already connected and use the MQTT broker.

But, I see that getting IP was done after MQTT tries, and after that, MQTT didn't try to connect again, but the panel got restarted.

Take a look at timestamps:
[16:22:44]I (1402) MqttManager: Starting MQTTManager, will connect to 172.30.30.3:1883 [16:22:44]E (1412) esp-tls: [sock=54] connect() error: Host is unreachable 16:22:45]I (2612) WiFiManager: Got IP: 172.30.30.125, Netmask: 255.255.255.0, Gateway: 172.30.30.1

[tpanajott]

That's a bit strange. It does indeed try to connect to MQTT before a WiFi connection is established but this is how it works for everyone. The task responsible for MQTT in the firmware is continuously trying to connect to MQTT. What strikes me is this log line [16:22:44]I (1422) MqttManager: MQTT_EVENT_ERROR [16:22:44]E (1432) MqttManager: Error report from esp-tls!. Are you running the MQTT broker with encryption?

[stepa-ict]

OK, I did additional investigation and dug a bit into the source code.
So, it doesn't matter that MQTT starts connecting before the ESP actually gets an IP, as MQTT will try to reconnect.
But in my case, something triggered a hard reset on the ESP32, and that was the real reason why MQTT did not get connected.
I cannot realize why esp32 contantlly reseting. AFAIR, I had some different firmware on this panel (like tasmota), maybe something did not clear from the memory while installing nspanel fw, just guessing.

Here is a full log from the panel:
[00:56:41]m [00:56:41]W (4254) Nextion: Did not receive the 'NSPM'-flag on screen startup. Are you running the NSPanel Manager GUI/TFT? [00:56:41]W (4254) Nextion: Unknown event data from Nextion: � [00:56:41]E (4514) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/screen_cmd'. Not connected to MQTT server. [00:56:41]E (4514) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/brightness_cmd'. Not connected to MQTT server. [00:56:41]E (4524) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/brightness_screensaver_cmd'. Not connected to MQTT server. [00:56:41]E (4534) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/screensaver_mode_cmd'. Not connected to MQTT server. [00:56:41]E (5064) ScreensaverPage: Failed to get NSPanel Config when showing screensaver page! Will cancel operation. [00:56:41]W (5064) Nextion: Unknown event data from Nextion: f [00:56:41]�[0 [00:56:41]assert failed: xQueueSemaphoreTake queue.c:1709 (( pxQueue )) [00:56:41] [00:56:41] [00:56:41]Backtrace: 0x40083784:0x3ffc0c90 0x40090315:0x3ffc0cb0 0x40098a4d:0x3ffc0cd0 0x40090cea:0x3ffc0df0 0x401af616:0x3ffc0e30 0x40091221:0x3ffc0e70 [00:56:41] [00:56:41] [00:56:41] [00:56:41] [00:56:41]ELF file SHA256: 0dc16a7ec [00:56:41] [00:56:41]Rebooting... [00:56:41]ets Jul 29 2019 12:21:46 [00:56:41] [00:56:41]rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) [00:56:41]configsip: 0, SPIWP:0xee [00:56:41]clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 [00:56:41]mode:DIO, clock div:2 [00:56:41]load:0x3fff0030,len:6276 [00:56:41]load:0x40078000,len:15716 [00:56:41]load:0x40080400,len:4 [00:56:41]ho 8 tail 4 room 4 [00:56:41]load:0x40080404,len:3860 [00:56:41]entry 0x40080634 [00:56:41]I (31) boot: ESP-IDF 5.4.0 2nd stage bootloader [00:56:41]I (31) boot: compile time May 3 2025 12:55:23 [00:56:41]I (31) boot: Multicore bootloader [00:56:41]I (32) boot: chip revision: v3.1 [00:56:41]I (35) boot.esp32: SPI Speed : 40MHz [00:56:41]I (39) boot.esp32: SPI Mode : DIO [00:56:41]I (42) boot.esp32: SPI Flash Size : 4MB [00:56:41]I (46) boot: Enabling RNG early entropy source... [00:56:41]I (50) boot: Partition Table: [00:56:41]I (53) boot: ## Label Usage Type ST Offset Length [00:56:41]I (59) boot: 0 nvs WiFi data 01 02 00009000 00005000 [00:56:41]I (66) boot: 1 otadata OTA data 01 00 0000e000 00002000 [00:56:41]I (72) boot: 2 ota_0 OTA app 00 10 00010000 001b0000 [00:56:41]I (79) boot: 3 ota_1 OTA app 00 11 001c0000 001b0000 [00:56:41]I (85) boot: 4 spiffs Unknown data 01 82 00370000 0008f000 [00:56:41]I (92) boot: 5 coredump Unknown data 01 03 003ff000 00001000 [00:56:41]I (99) boot: End of partition table [00:56:41]I (102) esp_image: segment 0: paddr=00010020 vaddr=3f400020 size=68bdch (429020) map [00:56:41]I (256) esp_image: segment 1: paddr=00078c04 vaddr=3ff80000 size=0001ch ( 28) load [00:56:41]I (256) esp_image: segment 2: paddr=00078c28 vaddr=3ffb0000 size=04a60h ( 19040) load [00:56:41]I (267) esp_image: segment 3: paddr=0007d690 vaddr=40080000 size=02988h ( 10632) load [00:56:41]I (272) esp_image: segment 4: paddr=00080020 vaddr=400d0020 size=10cd10h (1101072) map [00:56:41]I (651) esp_image: segment 5: paddr=0018cd38 vaddr=40082988 size=1c5e8h (116200) load [00:56:41]I (711) boot: Loaded app from partition at offset 0x10000 [00:56:41]I (711) boot: Disabling RNG early entropy source... [00:56:41]W (1201) ADC: legacy driver is deprecated, please migrate to esp_adc/adc_oneshot.h[00:56:41]I (1254) LittleFS: Initializing LittleFS. [00:56:41]I (1254) LittleFS: Mounted LittleFS successfully! [00:56:41]W (1304) wifi:Password length matches WPA2 standards, authmode threshold changes from OPEN to WPA2 [00:56:41]E (1414) esp-tls: [sock=54] connect() error: Host is unreachable [00:56:41]E (1414) transport_base: Failed to open a new connection: 32772 [00:56:41]E (1414) mqtt_client: Error transport connect [00:56:41]E (1424) MqttManager: Error report from esp-tls! [00:56:41]W (1424) MqttManager: Lost connection to MQTT server. [00:56:41]E (1434) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/relay1_cmd'. Not connected to MQTT server. [00:56:41]E (1444) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/relay2_cmd'. Not connected to MQTT server. [00:56:41]W (2024) Nextion: Unknown event data from Nextion: � [00:56:41]W (2024) Nextion: Unknown event data from Nextion: � [00:56:41]W (2024) Nextion: Unknown event data from Nextion: f [00:56:41]W (3024) Nextion: Unknown event data from Nextion: f [00:56:42]W (4034) Nextion: Unknown event data from Nextion: f [00:56:42]W (4224) Nextion: Did not receive the 'NSPM'-flag on screen startup. Are you running the NSPanel Manager GUI/TFT? [00:56:42]W (4224) Nextion: Unknown event data from Nextion: � [00:56:43]E (4484) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/screen_cmd'. Not connected to MQTT server. [00:56:43]E (4484) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/brightness_cmd'. Not connected to MQTT server. [00:56:43]E (4494) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/brightness_screensaver_cmd'. Not connected to MQTT server. [00:56:43]E (4504) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/screensaver_mode_cmd'. Not connected to MQTT server. [00:56:43]E (5044) ScreensaverPage: Failed to get NSPanel Config when showing screensaver page! Will cancel operation. [00:56:43]W (5044) Nextion: Unknown event data from Nextion: f [00:56:43]�[ [00:56:43]assert failed: xQueueSemaphoreTake queue.c:1709 (( pxQueue )) [00:56:43] [00:56:43] [00:56:43]Backtrace: 0x40083784:0x3ffc0c90 0x40090315:0x3ffc0cb0 0x40098a4d:0x3ffc0cd0 0x40090cea:0x3ffc0df0 0x401af616:0x3ffc0e30 0x40091221:0x3ffc0e70 [00:56:43] [00:56:43] [00:56:43] [00:56:43] [00:56:43]ELF file SHA256: 0dc16a7ec [00:56:43] [00:56:43]Rebooting... [00:56:43]ets Jul 29 2019 12:21:46 [00:56:43] [00:56:43]rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) [00:56:43]configsip: 0, SPIWP:0xee [00:56:43]clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 [00:56:43]mode:DIO, clock div:2 [00:56:43]load:0x3fff0030,len:6276 [00:56:43]load:0x40078000,len:15716 [00:56:43]load:0x40080400,len:4 [00:56:43]ho 8 tail 4 room 4 [00:56:43]load:0x40080404,len:3860 [00:56:43]entry 0x40080634 [00:56:43]I (31) boot: ESP-IDF 5.4.0 2nd stage bootloader [00:56:43]I (31) boot: compile time May 3 2025 12:55:23 [00:56:43]I (31) boot: Multicore bootloader [00:56:43]I (32) boot: chip revision: v3.1 [00:56:43]I (35) boot.esp32: SPI Speed : 40MHz [00:56:43]I (39) boot.esp32: SPI Mode : DIO [00:56:43]I (42) boot.esp32: SPI Flash Size : 4MB [00:56:43]I (46) boot: Enabling RNG early entropy source... [00:56:43]I (50) boot: Partition Table: [00:56:43]I (53) boot: ## Label Usage Type ST Offset Length [00:56:43]I (59) boot: 0 nvs WiFi data 01 02 00009000 00005000 [00:56:43]I (66) boot: 1 otadata OTA data 01 00 0000e000 00002000 [00:56:43]I (72) boot: 2 ota_0 OTA app 00 10 00010000 001b0000 [00:56:43]I (79) boot: 3 ota_1 OTA app 00 11 001c0000 001b0000 [00:56:43]I (85) boot: 4 spiffs Unknown data 01 82 00370000 0008f000 [00:56:43]I (92) boot: 5 coredump Unknown data 01 03 003ff000 00001000 [00:56:43]I (99) boot: End of partition table [00:56:43]I (102) esp_image: segment 0: paddr=00010020 vaddr=3f400020 size=68bdch (429020) map [00:56:43]I (256) esp_image: segment 1: paddr=00078c04 vaddr=3ff80000 size=0001ch ( 28) load [00:56:43]I (256) esp_image: segment 2: paddr=00078c28 vaddr=3ffb0000 size=04a60h ( 19040) load [00:56:43]I (267) esp_image: segment 3: paddr=0007d690 vaddr=40080000 size=02988h ( 10632) load [00:56:43]I (272) esp_image: segment 4: paddr=00080020 vaddr=400d0020 size=10cd10h (1101072) map [00:56:44]I (651) esp_image: segment 5: paddr=0018cd38 vaddr=40082988 size=1c5e8h (116200) load [00:56:44]I (711) boot: Loaded app from partition at offset 0x10000 [00:56:44]I (711) boot: Disabling RNG early entropy source... [00:56:44]W (1201) ADC: legacy driver is deprecated, please migrate toesp_adc/adc_oneshot.h[00:56:44]I (1254) LittleFS: Initializing LittleFS. [00:56:44]I (1254) LittleFS: Mounted LittleFS successfully! [00:56:45]W (1304) wifi:Password length matches WPA2 standards, authmode threshold changes from OPEN to WPA2 [00:56:45]E (1414) esp-tls: [sock=54] connect() error: Host is unreachable [00:56:45]E (1414) transport_base: Failed to open a new connection: 32772 [00:56:45]E (1414) mqtt_client: Error transport connect [00:56:45]E (1424) MqttManager: Error report from esp-tls! [00:56:45]W (1424) MqttManager: Lost connection to MQTT server. [00:56:45]E (1434) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/relay1_cmd'. Not connected to MQTT server. [00:56:45]E (1444) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/relay2_cmd'. Not connected to MQTT server. [00:56:45]W (2024) Nextion: Unknown event data from Nextion: � [00:56:45]W (2024) Nextion: Unknown event data from Nextion: � [00:56:45]W (2024) Nextion: Unknown event data from Nextion: f [00:56:46]W (3024) Nextion: Unknown event data from Nextion: f [00:56:47]W (4034) Nextion: Unknown event data from Nextion: f [00:56:47]W (4224) Nextion: Did not receive the 'NSPM'-flag on screen startup. Are you running the NSPanel Manager GUI/TFT? [00:56:47]W (4224) Nextion: Unknown event data from Nextion: � [00:56:48]E (4484) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/screen_cmd'. Not connected to MQTT server. [00:56:48]E (4484) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/brightness_cmd'. Not connected to MQTT server. [00:56:48]E (4494) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/brightness_screensaver_cmd'. Not connected to MQTT server. [00:56:48]E (4504) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/screensaver_mode_cmd'. Not connected to MQTT server. [00:56:48]W (5034) Nextion: Unknown event data from Nextion: f [00:56:48]E (5034) ScreensaverPage: Failed to get NSPanel Config when showing screensaver page! Will cancel operation. [00:56:48] [00:56:48]assert failed: xQueueSemaphoreTake queue.c:1709 (( pxQueue )) [00:56:48] [00:56:48] [00:56:48]Backtrace: 0x40083784:0x3ffc0c90 0x40090315:0x3ffc0cb0 0x40098a4d:0x3ffc0cd0 0x40090cea:0x3ffc0df0 0x401af616:0x3ffc0e30 0x40091221:0x3ffc0e70 [00:56:48] [00:56:48] [00:56:48] [00:56:48] [00:56:48]ELF file SHA256: 0dc16a7ec [00:56:48] [00:56:48]Rebooting... [00:56:48]ets Jul 29 2019 12:21:46 [00:56:48] [00:56:48]rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) [00:56:48]configsip: 0, SPIWP:0xee [00:56:48]clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 [00:56:48]mode:DIO, clock div:2 [00:56:48]load:0x3fff0030,len:6276 [00:56:48]load:0x40078000,len:15716 [00:56:48]load:0x40080400,len:4 [00:56:48]ho 8 tail 4 room 4 [00:56:48]load:0x40080404,len:3860 [00:56:48]entry 0x40080634 [00:56:48]I (31) boot: ESP-IDF 5.4.0 2nd stage bootloader [00:56:48]I (31) boot: compile time May 3 2025 12:55:23 [00:56:48]I (31) boot: Multicore bootloader [00:56:48]I (32) boot: chip revision: v3.1 [00:56:48]I (35) boot.esp32: SPI Speed : 40MHz [00:56:48]I (39) boot.esp32: SPI Mode : DIO [00:56:48]I (42) boot.esp32: SPI Flash Size : 4MB [00:56:48]I (46) boot: Enabling RNG early entropy source... [00:56:48]I (50) boot: Partition Table: [00:56:48]I (53) boot: ## Label Usage Type ST Offset Length [00:56:48]I (59) boot: 0 nvs WiFi data 01 02 00009000 00005000 [00:56:48]I (66) boot: 1 otadata OTA data 01 00 0000e000 00002000 [00:56:48]I (72) boot: 2 ota_0 OTA app 00 10 00010000 001b0000 [00:56:48]I (79) boot: 3 ota_1 OTA app 00 11 001c0000 001b0000 [00:56:48]I (85) boot: 4 spiffs Unknown data 01 82 00370000 0008f000 [00:56:48]I (92) boot: 5 coredump Unknown data 01 03 003ff000 00001000 [00:56:48]I (99) boot: End of partition table [00:56:48]I (102) esp_image: segment 0: paddr=00010020 vaddr=3f400020 size=68bdch (429020) map [00:56:49]I (256) esp_image: segment 1: paddr=00078c04 vaddr=3ff80000 size=0001ch ( 28) load [00:56:49]I (256) esp_image: segment 2: paddr=00078c28 vaddr=3ffb0000 size=04a60h ( 19040) load [00:56:49]I (267) esp_image: segment 3: paddr=0007d690 vaddr=40080000 size=02988h ( 10632) load [00:56:49]I (272) esp_image: segment 4: paddr=00080020 vaddr=400d0020 size=10cd10h (1101072) map [00:56:49]I (651) esp_image: segment 5: paddr=0018cd38 vaddr=40082988 size=1c5e8h (116200) load [00:56:49]I (711) boot: Loaded app from partition at offset 0x10000 [00:56:49]I (711) boot: Disabling RNG early entropy source... [00:56:49]W (1201) ADC: legacy driver is deprecated, please migrate toesp_adc/adc_oneshot.h[00:56:50]I (1254) LittleFS: Initializing LittleFS. [00:56:50]I (1254) LittleFS: Mounted LittleFS successfully! [00:56:50]W (1304) wifi:Password length matches WPA2 standards, authmode threshold changes from OPEN to WPA2 [00:56:50]E (1414) esp-tls: [sock=54] connect() error: Host is unreachable [00:56:50]E (1414) transport_base: Failed to open a new connection: 32772 [00:56:50]E (1414) mqtt_client: Error transport connect [00:56:50]E (1424) MqttManager: Error report from esp-tls! [00:56:50]W (1424) MqttManager: Lost connection to MQTT server. [00:56:50]E (1434) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/relay1_cmd'. Not connected to MQTT server. [00:56:50]E (1444) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/relay2_cmd'. Not connected to MQTT server. [00:56:50]W (2024) Nextion: Unknown event data from Nextion: � [00:56:50]W (2024) Nextion: Unknown event data from Nextion: � [00:56:50]W (2024) Nextion: Unknown event data from Nextion: f [00:56:51]W (3024) Nextion: Unknown event data from Nextion: f [00:56:52]W (4034) Nextion: Unknown event data from Nextion: f [00:56:53]W (4224) Nextion: Did not receive the 'NSPM'-flag on screen startup. Are you running the NSPanel Manager GUI/TFT? [00:56:53]W (4224) Nextion: Unknown event data from Nextion: � [00:56:53]E (4484) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/screen_cmd'. Not connected to MQTT server. [00:56:53]E (4484) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/brightness_cmd'. Not connected to MQTT server. [00:56:53]E (4494) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/brightness_screensaver_cmd'. Not connected to MQTT server. [00:56:53]E (4504) MqttManager: Failed to subscribe to MQTT topic 'nspanel/E4:65:B8:48:8C:D4/screensaver_mode_cmd'. Not connected to MQTT server. [00:56:53]E (5044) ScreensaverPage: Failed to get NSPanel Config when showing screensaver page! Will cancel operation. [00:56:53]W (5044) Nextion: Unknown event data from Nextion: f [00:56:53]�[ [00:56:53]assert failed: xQueueSemaphoreTake queue.c:1709 (( pxQueue )) [00:56:53] [00:56:53] [00:56:53]Backtrace: 0x40083784:0x3ffc0c90 0x40090315:0x3ffc0cb0 0x40098a4d:0x3ffc0cd0 0x40090cea:0x3ffc0df0 0x401af616:0x3ffc0e30 0x40091221:0x3ffc0e70 [00:56:53] [00:56:53] [00:56:53] [00:56:53] [00:56:53]ELF file SHA256: 0dc16a7ec [00:56:53] [00:56:53]Rebooting... [00:56:53]ets Jul 29 2019 12:21:46 [00:56:53] [00:56:53]rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) [00:56:53]configsip: 0, SPIWP:0xee [00:56:53]clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 [00:56:53]mode:DIO, clock div:2 [00:56:53]load:0x3fff0030,len:6276 [00:56:53]load:0x40078000,len:15716 [00:56:53]load:0x40080400,len:4 [00:56:53]ho 8 tail 4 room 4 [00:56:53]load:0x40080404,len:3860 [00:56:53]entry 0x40080634 [00:56:53]I (31) boot: ESP-IDF 5.4.0 2nd stage bootloader [00:56:53]I (31) boot: compile time May 3 2025 12:55:23 [00:56:53]I (31) boot: Multicore bootloader [00:56:53]I (32) boot: chip revision: v3.1 [00:56:53]I (35) boot.esp32: SPI Speed : 40MHz [00:56:53]I (39) boot.esp32: SPI Mode : DIO [00:56:53]I (42) boot.esp32: SPI Flash Size : 4MB [00:56:53]I (46) boot: Enabling RNG early entropy source... [00:56:53]I (50) boot: Partition Table: [00:56:53]I (53) boot: ## Label Usage Type ST Offset Length [00:56:53]I (59) boot: 0 nvs WiFi data 01 02 00009000 00005000 [00:56:53]I (66) boot: 1 otadata OTA data 01 00 0000e000 00002000 [00:56:53]I (72) boot: 2 ota_0 OTA app 00 10 00010000 001b0000 [00:56:53]I (79) boot: 3 ota_1 OTA app 00 11 001c0000 001b0000 [00:56:53]I (85) boot: 4 spiffs Unknown data 01 82 00370000 0008f000 [00:56:53]I (92) boot: 5 coredump Unknown data 01 03 003ff000 00001000 [00:56:53]I (99) boot: End of partition table [00:56:53]I (102) esp_image: segment 0: paddr=00010020 vaddr=3f400020 size=68bdch (429020) map [00:56:54]I (256) esp_image: segment 1: paddr=00078c04 vaddr=3ff80000 size=0001ch ( 28) load [00:56:54]I (256) esp_image: segment 2: paddr=00078c28 vaddr=3ffb0000 size=04a60h ( 19040) load [00:56:54]I (267) esp_image: segment 3: paddr=0007d690 vaddr=40080000 size=02988h ( 10632) load [00:56:54]I (272) esp_image: segment 4: paddr=00080020 vaddr=400d0020 size=10cd10h (1101072) map

[tpanajott]

Hmm, strange. We've seen this issue before but I've never been able to reproduce it. I know one person have had this issue when using the web flasher and everything worked fine when flashed via esptool.

There is also the blank TFT users can flash before migrating away from the blueprint project.

[stepa-ict]

Ok thanks, let's try with the esptool.

Can you give me the link of the right merged-flash.bin file for 2.1.3-stable?
Also, do you know how to blank TFT?

[tpanajott]

The merged bin file can be found here: https://github.com/NSPManager/NSPanelManager/blob/2.1.3-stable-h1/docker/web/nspanelmanager/merged_flash.bin

Here are some documentation from the Blueprint project regarding the blank TFT: https://github.com/Blackymas/NSPanel_HA_Blueprint/blob/main/docs/nspanel_blank.md

[stepa-ict]

Hi,
I tried to flash the firmware using esptool and the bin file you provided in the previous msg, but had no luck. The same situation. Boot process crashed at the line [00:56:48]assert failed: xQueueSemaphoreTake queue.c:1709 (( pxQueue )).

Interesting thing is that when I flash the panel with some old bin that have localy (Version 0.1.152) it works well (boot not crashing but the rest of the logic doesn't work as the mqtt structure is not the same). So, that leads me to believe that the new fw version has a bug.

[tpanajott]

Could I perhaps send you a newer release of the firmware later today so that I can get a backtrace that I can trace back into the correct files and lines? It would be very much appreciated if you wanted to assist in debugging this issue as I can't replicate it on my own.

[stepa-ict]

Yes, sure, I'll appreciate this.

I have some conclusions based on my (and Claude's :) ) investigation. Maybe it can help.

The crash is in the screensaver path on a panel with no valid config: assert failed: xQueueSemaphoreTake queue.c:1709 (( pxQueue )) — a NULL mutex. With no config, InterfaceManager falls back to a 5s timeout, fires the sleep event, tries to show the screensaver, and panics → reboot every ~5s. It reproduces on a fresh panel that hasn't received config yet (i.e. when the screen isn't running an NSPM TFT, so no NSPM-flag), which is likely why it doesn't repro for everyone. The key part: it's a distribution problem, not a source problem. The web-flasher image and the manager's bundled firmware.bin are a stale build — compiled May 3 2025, stamped Version 0.3.666 — that still contains this crash. The current source doesn't (no ScreensaverPage crash path there). Re-flashing via esptool didn't help because it's the same stale binary. Building from the 2.1.3-stable source and flashing that fixed the boot loop completely — stable for 8+ minutes, MQTT connects, panel registers. Suggested fix: rebuild and republish the flasher/OTA binary from the current source (and the version stamp is coming out as 0.3.666). That should resolve the boot loop for anyone hitting it via the website.

With these local changes and local build, I was able to successfully upload fw and run the panel without a hard reset.
Not sure if this makes sense, as now I'm not able to upload the TFT file from the manager. On sent MQTT msg "tft_update" got no response.

Anyway, send me the newer release of the firmware to get a backtrace.

[tpanajott]

That all sounds plausible. Could you send over the changes you performed on the firmware?

[stepa-ict]

Actually, I just checked out the 2.1.3-stable tag and built firmware/firmware_espidf as-is with PlatformIO, then flashed that.

The crash is simply absent from the current source; it only exists in the published binary, which is the stale 0.3.666 / May 3 2025 build that both the web flasher and the manager's bundled firmware.bin still ship.

[tpanajott]

Ah, i see. I have it on my to do list to update the firmware for the online flasher but haven't gotten around to it so it. That also explains why I can't replicate it.

[stepa-ict]

But I also got the same outcome while flashing with esptool the file that you sent to me.

So, what should be the long-term fix for this?