Smart config - SC_EVENT_SEND_ACK_DONE never received (IDFGH-14432)

[leenowell]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

IDF version.

ESP-IDF v5.5-dev-1050-gb5ac4fbdf9

Espressif SoC revision.

ESP32-D0WDQ6 (revision v0.0)

Operating System used.

Linux

How did you build your project?

Eclipse IDE

If you are using Windows, please specify command line type.

None

Development Kit.

ESP WROOM 32

Power Supply used.

USB

What is the expected behavior?

Having initiated Smart Config and received a SC_EVENT_GOT_SSID_PSWD event I expect to subsequently receive a SC_EVENT_SEND_ACK_DONE event.

What is the actual behavior?

I never receive the SC_EVENT_SEND_ACK_DONE event

Steps to reproduce.

Run the smart config example and send the smart config data using the ESP Touch app (I used Android version - App version 2.3.3 ESP Touch version 1.1.1) and used regular ESP Touch as opposed to v2.

Debug Logs.

ets Jun  8 2016 00:22:57

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
ets Jun  8 2016 00:22:57

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:6328
load:0x40078000,len:15828
load:0x40080400,len:3860
entry 0x40080638
I (27) boot: ESP-IDF v5.5-dev-1050-gb5ac4fbdf9 2nd stage bootloader
I (27) boot: compile time Jan  7 2025 18:10:32
I (27) boot: Multicore bootloader
I (30) boot: chip revision: v0.0
I (33) boot.esp32: SPI Speed      : 40MHz
I (36) boot.esp32: SPI Mode       : DIO
I (40) boot.esp32: SPI Flash Size : 2MB
I (44) boot: Enabling RNG early entropy source...
I (48) boot: Partition Table:
I (51) boot: ## Label            Usage          Type ST Offset   Length
I (57) boot:  0 nvs              WiFi data        01 02 00009000 00006000
I (63) boot:  1 phy_init         RF data          01 01 0000f000 00001000
I (70) boot:  2 factory          factory app      00 00 00010000 00100000
I (77) boot: End of partition table
I (80) esp_image: segment 0: paddr=00010020 vaddr=3f400020 size=19bb4h (105396) map
I (123) esp_image: segment 1: paddr=00029bdc vaddr=3ff80000 size=0001ch (    28) load
I (124) esp_image: segment 2: paddr=00029c00 vaddr=3ffb0000 size=03f1ch ( 16156) load
I (133) esp_image: segment 3: paddr=0002db24 vaddr=40080000 size=024f4h (  9460) load
I (138) esp_image: segment 4: paddr=00030020 vaddr=400d0020 size=8df7ch (581500) map
I (341) esp_image: segment 5: paddr=000bdfa4 vaddr=400824f4 size=1531ch ( 86812) load
I (386) boot: Loaded app from partition at offset 0x10000
I (386) boot: Disabling RNG early entropy source...
I (397) cpu_start: Multicore app
I (405) cpu_start: Pro cpu start user code
I (405) cpu_start: cpu freq: 160000000 Hz
I (405) app_init: Application information:
I (405) app_init: Project name:     smart_config
I (410) app_init: App version:      1
I (413) app_init: Compile time:     Jan  7 2025 18:09:46
I (418) app_init: ELF file SHA256:  7595b2674...
I (423) app_init: ESP-IDF:          v5.5-dev-1050-gb5ac4fbdf9
I (428) efuse_init: Min chip rev:     v0.0
I (432) efuse_init: Max chip rev:     v3.99 
I (436) efuse_init: Chip rev:         v0.0
I (440) heap_init: Initializing. RAM available for dynamic allocation:
I (446) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM
I (451) heap_init: At 3FFB83B8 len 00027C48 (159 KiB): DRAM
I (456) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM
I (462) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (467) heap_init: At 40097810 len 000087F0 (33 KiB): IRAM
I (474) spi_flash: detected chip: gd
I (476) spi_flash: flash io: dio
W (479) spi_flash: Detected size(4096k) larger than the size in the binary image header(2048k). Using the size in the binary image header.
I (492) main_task: Started on CPU0
I (502) main_task: Calling app_main()
I (552) wifi:wifi driver task: 3ffc047c, prio:23, stack:6656, core=0
I (572) wifi:wifi firmware version: 34d97ea27
I (572) wifi:wifi certification version: v7.0
I (572) wifi:config NVS flash: enabled
I (572) wifi:config nano formatting: disabled
I (572) wifi:Init data frame dynamic rx buffer num: 32
I (582) wifi:Init static rx mgmt buffer num: 5
I (582) wifi:Init management short buffer num: 32
I (592) wifi:Init dynamic tx buffer num: 32
I (592) wifi:Init static rx buffer size: 1600
I (592) wifi:Init static rx buffer num: 10
I (602) wifi:Init dynamic rx buffer num: 32
I (602) wifi_init: rx ba win: 6
I (602) wifi_init: accept mbox: 6
I (612) wifi_init: tcpip mbox: 32
I (612) wifi_init: udp mbox: 6
I (612) wifi_init: tcp mbox: 6
I (622) wifi_init: tcp tx win: 5760
I (622) wifi_init: tcp rx win: 5760
I (622) wifi_init: tcp mss: 1440
I (622) wifi_init: WiFi IRAM OP enabled
I (632) wifi_init: WiFi RX IRAM OP enabled
I (632) phy_init: phy_version 4840,02e0d70,Sep  2 2024,19:39:07
I (722) wifi:mode : sta (24:0a:c4:82:6f:1c)
I (722) wifi:enable tsf
I (722) main_task: Returned from app_main()
I (772) smartconfig: SC version: V3.0.2
I (5602) wifi:ic_enable_sniffer
I (5612) smartconfig: Start to find channel...
I (5612) smartconfig_example: Scan done
I (5792) smartconfig: TYPE: ESPTOUCH
I (5792) smartconfig: T|AP MAC: f0:86:20:13:b4:33
I (5792) smartconfig: Found channel on 11-0. Start to get ssid and password...
I (5802) smartconfig_example: Found channel
I (8342) smartconfig: T|pswd: wivbke
I (8342) smartconfig: T|ssid: Lounge
I (8342) wifi:ic_disable_sniffer
I (8342) smartconfig_example: Got SSID and password
I (8352) smartconfig_example: SSID:Lounge
I (8352) smartconfig_example: PASSWORD:wivbke
I (8692) wifi:new:<11,0>, old:<11,0>, ap:<255,255>, sta:<11,0>, prof:11, snd_ch_cfg:0x0
I (8692) wifi:state: init -> auth (0xb0)
I (8692) wifi:state: auth -> assoc (0x0)
I (8702) wifi:state: assoc -> run (0x10)
I (11702) wifi:state: run -> init (0xf00)
I (11712) wifi:new:<11,0>, old:<11,0>, ap:<255,255>, sta:<11,0>, prof:11, snd_ch_cfg:0x0
I (14132) wifi:new:<11,0>, old:<11,0>, ap:<255,255>, sta:<11,0>, prof:11, snd_ch_cfg:0x0
I (14132) wifi:state: init -> auth (0xb0)
I (14152) wifi:state: auth -> assoc (0x0)
I (14162) wifi:state: assoc -> run (0x10)
I (17152) wifi:state: run -> init (0xf00)
I (17172) wifi:new:<11,0>, old:<11,0>, ap:<255,255>, sta:<11,0>, prof:11, snd_ch_cfg:0x0
I (19602) wifi:new:<11,0>, old:<11,0>, ap:<255,255>, sta:<11,0>, prof:11, snd_ch_cfg:0x0
I (19602) wifi:state: init -> auth (0xb0)
I (19612) wifi:state: auth -> assoc (0x0)
I (19622) wifi:state: assoc -> run (0x10)
I (22622) wifi:state: run -> init (0xf00)
I (22632) wifi:new:<11,0>, old:<11,0>, ap:<255,255>, sta:<11,0>, prof:11, snd_ch_cfg:0x0
I (25062) wifi:new:<11,0>, old:<11,0>, ap:<255,255>, sta:<11,0>, prof:11, snd_ch_cfg:0x0
I (25062) wifi:state: init -> auth (0xb0)
I (25072) wifi:state: auth -> assoc (0x0)
I (25082) wifi:state: assoc -> run (0x10)
I (28102) wifi:state: run -> init (0xf00)
I (28112) wifi:new:<11,0>, old:<11,0>, ap:<255,255>, sta:<11,0>, prof:11, snd_ch_cfg:0x0
I (30542) wifi:new:<11,0>, old:<11,0>, ap:<255,255>, sta:<11,0>, prof:11, snd_ch_cfg:0x0
I (30542) wifi:state: init -> auth (0xb0)
I (30552) wifi:state: auth -> assoc (0x0)
I (30552) wifi:state: assoc -> run (0x10)
I (32582) wifi:<ba-add>idx:0 (ifx:0, f0:86:20:13:b4:33), tid:6, ssn:0, winSize:64
I (33552) wifi:state: run -> init (0xf00)
I (33572) wifi:<ba-del>idx:0, tid:6
I (33572) wifi:new:<11,0>, old:<11,0>, ap:<255,255>, sta:<11,0>, prof:11, snd_ch_cfg:0x0
I (35992) wifi:new:<11,0>, old:<11,0>, ap:<255,255>, sta:<11,0>, prof:11, snd_ch_cfg:0x0
I (35992) wifi:state: init -> auth (0xb0)
I (36012) wifi:state: auth -> assoc (0x0)
I (36012) wifi:state: assoc -> run (0x10)
I (39012) wifi:state: run -> init (0xf00)
I (39022) wifi:new:<11,0>, old:<11,0>, ap:<255,255>, sta:<11,0>, prof:11, snd_ch_cfg:0x0

More Information.

I modified the code to log when the SC_EVENT_SEND_ACK_DONE was received as follows

} else if (event_base == SC_EVENT && event_id == SC_EVENT_SEND_ACK_DONE) {
    ESP_LOGI(TAG, "Smart Config ACK done");
    xEventGroupSetBits(s_wifi_event_group, ESPTOUCH_DONE_BIT);
}