Eth2AP example in boot loop (IDFGH-5532)

[robopp55]

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Environment

• Development Kit: ESP32-Ethernet-Kit_A_v1.2
• Kit version v1.2
• Module or chip used: ESP32-WROVER-E
• IDF version (run git describe --tags to find it): v4.4-dev-1594-g1d7068e4b
• Build System: idf.py
• Compiler version (run xtensa-esp32-elf-gcc --version to find it): xtensa-esp32-elf-gcc (crosstool-NG esp-2020r3) 8.4.0
• Operating System: Linux
• (Windows only) environment type: [MSYS2 mingw32|ESP Command Prompt|Plain Command Prompt|PowerShell].
• Using an IDE?: No
• Power Supply: USB

Problem Description

I built the Eth2AP example application and flashed my ESP32-Ethernet-Kit_A_V1.2 and it's stuck in a boot loop. The debug output is as follows:

ELF file SHA256: 7e58e01de8426c2c

Rebooting...
ets Jul 29 2019 12:21:46

rst:0xc (SW_CPU_RESET),boot:0x12 (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:6744
load:0x40078000,len:14236
ho 0 tail 12 room 4
load:0x40080400,len:3716
entry 0x40080680
I (29) boot: ESP-IDF v4.4-dev-1594-g1d7068e4b 2nd stage bootloader
I (29) boot: compile time 18:14:02
I (29) boot: chip revision: 3
I (33) boot_comm: chip revision: 3, min. bootloader chip revision: 0
I (41) boot.esp32: SPI Speed      : 40MHz
I (45) boot.esp32: SPI Mode       : DIO
I (50) boot.esp32: SPI Flash Size : 2MB
I (54) boot: Enabling RNG early entropy source...
I (60) boot: Partition Table:
I (63) boot: ## Label            Usage          Type ST Offset   Length
I (70) boot:  0 nvs              WiFi data        01 02 00009000 00006000
I (78) boot:  1 phy_init         RF data          01 01 0000f000 00001000
I (85) boot:  2 factory          factory app      00 00 00010000 00100000
I (93) boot: End of partition table
I (97) boot_comm: chip revision: 3, min. application chip revision: 0
I (104) esp_image: segment 0: paddr=00010020 vaddr=3f400020 size=12bc0h ( 76736) map
I (140) esp_image: segment 1: paddr=00022be8 vaddr=3ffb0000 size=03a2ch ( 14892) load
I (147) esp_image: segment 2: paddr=0002661c vaddr=40080000 size=099fch ( 39420) load
I (163) esp_image: segment 3: paddr=00030020 vaddr=400d0020 size=5d4f4h (382196) map
I (302) esp_image: segment 4: paddr=0008d51c vaddr=400899fc size=0af34h ( 44852) load
I (320) esp_image: segment 5: paddr=00098458 vaddr=50000000 size=00010h (    16) load
I (331) boot: Loaded app from partition at offset 0x10000
I (331) boot: Disabling RNG early entropy source...
I (343) cpu_start: Pro cpu up.
I (343) cpu_start: Starting app cpu, entry point is 0x400810b4
I (329) cpu_start: App cpu up.
I (357) cpu_start: Pro cpu start user code
I (357) cpu_start: cpu freq: 160000000
I (357) cpu_start: Application information:
I (362) cpu_start: Project name:     eth2ap
I (367) cpu_start: App version:      1
I (371) cpu_start: Compile time:     Jul 11 2021 18:13:59
I (377) cpu_start: ELF file SHA256:  7e58e01de8426c2c...
I (383) cpu_start: ESP-IDF:          v4.4-dev-1594-g1d7068e4b
I (390) heap_init: Initializing. RAM available for dynamic allocation:
I (397) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM
I (403) heap_init: At 3FFB6618 len 000299E8 (166 KiB): DRAM
I (409) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM
I (415) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (422) heap_init: At 40094930 len 0000B6D0 (45 KiB): IRAM
I (429) spi_flash: detected chip: generic
I (433) spi_flash: flash io: dio
W (437) spi_flash: Detected size(4096k) larger than the size in the binary image header(2048k). Using the size in the binary image header.
I (451) cpu_start: Starting scheduler on PRO CPU.
I (0) cpu_start: Starting scheduler on APP CPU.
I (575) system_api: Base MAC address is not set
I (575) system_api: read default base MAC address from EFUSE
I (2495) eth_example: Ethernet Started
I (2495) eth_example: Ethernet Link Up
ESP_ERROR_CHECK failed: esp_err_t 0x3001 (ESP_ERR_WIFI_NOT_INIT) at 0x40087f88
file: "../main/ethernet_example_main.c" line 108
func: eth_event_handler
expression: esp_wifi_start()

abort() was called at PC 0x40087f8b on core 0


Backtrace:0x400d23a7:0x3ffbb5100x40087f99:0x3ffbb530 0x4008e9da:0x3ffbb550 0x40087f8b:0x3ffbb5c0 0x400d6733:0x3ffbb5e0 0x4012b8a5:0x3ffbb600 0x4012b4f2:0x3ffbb630 0x4012b5cd:0x3ffbb670 0x4008b03d:0x3ffbb690

Expected Behavior

It doesn't go into a boot loop and serves up an access point.

Actual Behavior

Boot loop

Steps to reproduce

Build and burn using the idf python script

Code to reproduce this issue

// the code should be wrapped in the ```cpp tag so that it will be displayed better.
#include "esp_log.h"

void app_main()
{

}

// If your code is longer than 30 lines, GIST is preferred.

Debug Logs

Debug log goes here, should contain the backtrace, as well as the reset source if it is a crash.
Please copy the plain text here for us to search the error log. Or attach the complete logs but leave the main part here if the log is *too* long.

Other items if possible

• sdkconfig file (attach the sdkconfig file from your project folder)
• elf file in the build folder (note this may contain all the code details and symbols of your project.)
• coredump (This provides stacks of tasks.)

[robopp55]

The boot loop only happens when I have the RTSP server running and boot the ESP32. If I allow the ESP32 to boot then connect the RTSP server, it boots fine, but I cannot connect to the AP with my iPhone.

[ESP-YJM]

@robopp55 Could you please move initialize_wifi() calling before initialize_ethernet() in app_main and try.

[ESP-YJM]

@robopp55 Is this patch could slove your issue? Or any update.