ESP32-C3 WiFi Disconnects and Reboots During BT Stack Testing – Debug Log Analysis

DeDaMrAz 150 4

#1 21846290 23 Feb 2026 09:21

DeDaMrAz DeDaMrAz

Level 21

Post #1

21846290 23 Feb 2026 09:21

Info:MAIN:Rebooting...
Info:I (36704) wifi:flush txq
I (36704) wifi:stop sw txq
I (36714) wifi:lmac stop hw txq
MAIN:Main_OnWiFiStatusChange - WIFI_STA_DISCONNECTED - 2
Info:MAIN:WiFi Disconnected
ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0xc (RTC_SW_CPU_RST),boot:0xd (SPI_FAST_FLASH_BOOT)
Saved PC:0x403874d6
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd5820,len:0x15c4
load:0x403cbf10,len:0xc84
load:0x403ce710,len:0x2fd0
entry 0x403cbf1a
I (15) boot: ESP-IDF v5.5.2 2nd stage bootloader
I (15) boot: compile time Feb 23 2026 02:46:51
I (16) boot: chip revision: v0.4
I (16) boot: efuse block revision: v1.3
I (19) boot.esp32c3: SPI Speed      : 80MHz
I (23) boot.esp32c3: SPI Mode       : DIO
I (27) boot.esp32c3: SPI Flash Size : 4MB
I (30) boot: Enabling RNG early entropy source...
I (35) boot: Partition Table:
I (38) boot: ## Label            Usage          Type ST Offset   Length
I (44) boot:  0 otadata          OTA data         01 00 00009000 00002000
I (50) boot:  1 nvs              WiFi data        01 02 0000b000 00005000
I (57) boot:  2 app0             OTA app          00 10 00010000 000f0000
I (63) boot:  3 app1             OTA app          00 11 00100000 000f0000
I (70) boot:  4 lfs              Unknown data     01 82 001f0000 00010000
I (76) boot: End of partition table
I (80) esp_image: segment 0: paddr=00100020 vaddr=3c0a0020 size=24a54h (150100) map
I (111) esp_image: segment 1: paddr=00124a7c vaddr=3fc94a00 size=03570h ( 13680) load
I (114) esp_image: segment 2: paddr=00127ff4 vaddr=40380000 size=08024h ( 32804) load
I (121) esp_image: segment 3: paddr=00130020 vaddr=42000020 size=961f4h (614900) map
I (220) esp_image: segment 4: paddr=001c621c vaddr=40388024 size=0c89ch ( 51356) load
I (230) esp_image: segment 5: paddr=001d2ac0 vaddr=50000000 size=00034h (    52) load
I (237) boot: Loaded app from partition at offset 0x100000
I (237) boot: Disabling RNG early entropy source...
I (248) cpu_start: Unicore app
I (256) cpu_start: GPIO 20 and 21 are used as console UART I/O pins
I (256) cpu_start: Pro cpu start user code
I (256) cpu_start: cpu freq: 160000000 Hz
I (258) app_init: Application information:
I (262) app_init: Project name:     OpenBeken
I (266) app_init: App version:      dev_20260223_025831
I (271) app_init: Compile time:     Feb 23 2026 02:58:50
I (276) app_init: ELF file SHA256:  2fa82e7b6...
I (281) app_init: ESP-IDF:          v5.5.2
I (284) efuse_init: Min chip rev:     v0.3
I (288) efuse_init: Max chip rev:     v1.99 
I (292) efuse_init: Chip rev:         v0.4
I (296) heap_init: Initializing. RAM available for dynamic allocation:
I (302) heap_init: At 3FCA1530 len 0001EAD0 (122 KiB): RAM
I (307) heap_init: At 3FCC0000 len 0001C710 (113 KiB): Retention RAM
I (314) heap_init: At 3FCDC710 len 00002950 (10 KiB): Retention RAM
I (320) heap_init: At 50000034 len 00001FB4 (7 KiB): RTCRAM
I (325) spi_flash: detected chip: generic
I (329) spi_flash: flash io: dio
I (332) sleep_gpio: Configure to isolate all GPIO pins in sleep state
I (338) sleep_gpio: Enable automatic switching of GPIO sleep configuration
I (356) pm: Frequency switching config: CPU_MAX: 160, APB_MAX: 80, APB_MIN: 40, Light sleep: DISABLED
I (356) main_task: Started on CPU0
I (356) main_task: Calling app_main()
I (356) temperature_sensor: Range [-10°C ~ 80°C], error < 1°C
BT proxy: ESP-IDF phase1 stub active
Entering initLog()...
Commands registered!
initLog() done!

Super early tests but I want to test if this is feasible at all an implement it as a BT proxy that can be enabled with a flag for testing proposes. If all the test pass I'll look into adding it to other platforms but since ESP gave me most problems before I am starting with the "biggest" fish first 😁 will update this once some progress is made, stay tuned.

Added after 2 [hours] 31 [minutes]:

Some progress but with a lot of struggle... not sure it is worth it but I'll explore more....

Added after 33 [minutes]:

Added after 3 [minutes]:

Info:MAIN:Time 65, idle 209/s, free 82912, MQTT 0(4), bWifi 1, secondsWithNoPing -1, socks 0/0 
Info:MAIN:Time 66, idle 216/s, free 83040, MQTT 0(4), bWifi 1, secondsWithNoPing -1, socks 0/0 
Info:MAIN:Time 67, idle 216/s, free 82224, MQTT 0(4), bWifi 1, secondsWithNoPing 1, socks 0/0 
Info:NTP:Seconds since Jan 1 1900 = 3980817267
Info:NTP:Unix time  : 1771828467 - local Time 2026-02-23 06:34:27
Info:MAIN:Time 68, idle 218/s, free 82868, MQTT 0(4), bWifi 1, secondsWithNoPing 2, socks 0/0 
Info:MAIN:Time 69, idle 211/s, free 82868, MQTT 0(4), bWifi 1, secondsWithNoPing 3, socks 0/0 
Info:DRV:BTProxy: Received API Msg 5 (Len: 0)
Info:DRV:BTProxy: Handshake -> DisconnectRequest
Info:DRV:BTProxy: Client disconnected or error
Info:DRV:BTProxy: Client connected (sock 57)
Info:DRV:BTProxy: Received API Msg 1 (Len: 29)
Info:DRV:BTProxy: Handshake -> HelloRequest
Info:DRV:BTProxy: Received API Msg 3 (Len: 0)
Info:DRV:BTProxy: Handshake -> ConnectRequest
Info:DRV:BTProxy: Received API Msg 9 (Len: 0)
Info:DRV:BTProxy: Handshake -> DeviceInfoRequest
Info:DRV:BTProxy: Received API Msg 11 (Len: 0)
Info:DRV:BTProxy: Handshake -> ListEntitiesRequest (Sending Done)
Info:DRV:BTProxy: Received API Msg 20 (Len: 0)
Info:DRV:BTProxy: Received API Msg 34 (Len: 0)
Info:DRV:BTProxy: Received API Msg 38 (Len: 0)
Info:MAIN:Time 70, idle 231/s, free 83036, MQTT 0(4), bWifi 1, secondsWithNoPing 4, socks 0/0 
Info:MAIN:Time 71, idle 200/s, free 83036, MQTT 0(4), bWifi 1, secondsWithNoPing 5, socks 0/0 
Info:MAIN:Time 72, idle 209/s, free 83036, MQTT 0(4), bWifi 1, secondsWithNoPing 6, socks 0/0 
Info:MQTT:mqtt_host empty, not starting mqtt
Info:MAIN:Time 73, idle 212/s, free 83036, MQTT 0(5), bWifi 1, secondsWithNoPing 7, socks 0/0 
Info:MAIN:Time 74, idle 219/s, free 82864, MQTT 0(5), bWifi 1, secondsWithNoPing 8, socks 0/0 
Info:MAIN:Time 75, idle 217/s, free 70720, MQTT 0(5), bWifi 1, secondsWithNoPing 9, socks 0/0

Weird mashup....

Added after 1 [hours]:

Proof of concept is working...

Since I've been digging through Bluetooth entire night and made this proof of concept work I came to the conclusion that it is a lot of work for somewhat little benefit. Every platform has it's own BT API so no one BTProxy driver is strictly plausible and binaries required are often large so that will most likely exclude 2Mb platforms (not tested - just a guess).

Overall - not impossible but problematic and cost to benefit ratio is significant so I am going to stop this experiment here unless there is a viable usage case and a need for such a driver. The current device will remain as a test in my setup just to collect data and observe overall stability and behavior.

Added after 21 [minutes]:

If anybody is interested in playing around and experimenting more I am attaching latest build I made for ESP32-C3 module

Attachments:

OpenESP32C3_BT_test_17.factory.bin Download (1.35 MB)

If you like my work, support me at: https://paypal.me/openshwprojects

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#2 21846584 23 Feb 2026 13:38

insmod insmod

Level 30

Helpful post? (0)

Post #2
21846584 23 Feb 2026 13:38

This is much more complex than what i've thought of doing.
But this is better.
Are you using NimBLE or bluedroid?
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#3 21846587 23 Feb 2026 13:45

DeDaMrAz DeDaMrAz

Level 21

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Post #3
21846587 23 Feb 2026 13:45

bluedroid as ESPHome was the base and easiest to implement.

my initial idea was to "restore" BT proxy option to the zigbee gateway with RTL8720D but I started by what I had on the table atm - EPS32-C3.... most issues stem from the different IDF versions and support for BT 4.2 vs BT5 and BLE.... on top of that I had a bug in the docker local build tool so I spent a good amount of time figuring that out - turns out it was my error all along in parsing the partitions.csv.... not proud of that.

As soon as I find my 8720 dev board I'll try to port it to RTL.

If you like my work, support me at: https://paypal.me/openshwprojects
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#4 21846591 23 Feb 2026 13:48

insmod insmod

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Post #4
21846591 23 Feb 2026 13:48

Can you push it into some branch on github?
#5 21846593 23 Feb 2026 13:49

DeDaMrAz DeDaMrAz

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Post #5
21846593 23 Feb 2026 13:49

Probably, it's all over the place and not pretty (!!!) but I'll try to clean the junk out and push it to my fork soon

Not sure if it will work but here it is - https://github.com/DeDaMrAzR/OpenBK7231T_App/tree/BT_proxy

If you like my work, support me at: https://paypal.me/openshwprojects
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ESP32-C3 WiFi Disconnects and Reboots During BT Stack Testing – Debug Log Analysis

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