ESP32 Forum

Hello everyone,
I am running the spiffs example in two different ESP32. However I get watchdog error. How can I solve it? Thank you.
E (5336) task_wdt: Task watchdog got triggered. The following tasks/users did not reset the watchdog in time:
E (5336) task_wdt: - IDLE (CPU 0)
E (5336) task_wdt: Tasks currently running:
E (5336) task_wdt: CPU 0: main
E (5336) task_wdt: CPU 1: IDLE
E (5336) task_wdt: Print CPU 0 (current core) backtrace


Backtrace: 0x400DDB0B:0x3FFB0CC0 0x400DDC92:0x3FFB0CE0 0x400827A5:0x3FFB0D00 0x40082D7A:0x3FFB46E0 0x40082DC7:0x3FFB4700 0x40082D3B:0x3FFB4720 0x40084991:0x3FFB4740 0x40084C11:0x3FFB4760 0x4008450B:0x3FFB4780 0x400DD376:0x3FFB47C0 0x400D68E9:0x3FFB47F0 0x400DA513:0x3FFB4820 0x400D8133:0x3FFB4850 0x400DA125:0x3FFB48A0 0x400D6FA2:0x3FFB48E0 0x400D64BE:0x3FFB4910 0x400D4015:0x3FFB4930 0x400DE5E6:0x3FFB4950 0x400DE699:0x3FFB4980 0x400D5824:0x3FFB49A0 0x400ECE12:0x3FFB4A80 0x400886D9:0x3FFB4AB0
0x400ddb0b: task_wdt_timeout_handling at C:/Users/Usuario/esp/esp-idf/components/esp_system/task_wdt/task_wdt.c:461 (discriminator 3)

0x400ddc92: task_wdt_isr at C:/Users/Usuario/esp/esp-idf/components/esp_system/task_wdt/task_wdt.c:585

0x400827a5: _xt_lowint1 at C:/Users/Usuario/esp/esp-idf/components/freertos/FreeRTOS-Kernel/portable/xtensa/xtensa_vectors.S:1118

0x40082d7a: esp_timer_impl_get_counter_reg at C:/Users/Usuario/esp/esp-idf/components/esp_timer/src/esp_timer_impl_lac.c:111

0x40082dc7: esp_timer_impl_get_time at C:/Users/Usuario/esp/esp-idf/components/esp_timer/src/esp_timer_impl_lac.c:141

0x40082d3b: esp_system_get_time at C:/Users/Usuario/esp/esp-idf/components/esp_timer/src/system_time.c:53

0x40084991: on_spi1_released at C:/Users/Usuario/esp/esp-idf/components/spi_flash/spi_flash_os_func_app.c:352
(inlined by) spi1_end at C:/Users/Usuario/esp/esp-idf/components/spi_flash/spi_flash_os_func_app.c:115

0x40084c11: spiflash_end_default at C:/Users/Usuario/esp/esp-idf/components/spi_flash/esp_flash_api.c:138

0x4008450b: esp_flash_read at C:/Users/Usuario/esp/esp-idf/components/spi_flash/esp_flash_api.c:849

0x400dd376: esp_partition_read at C:/Users/Usuario/esp/esp-idf/components/esp_partition/partition_target.c:38

0x400d68e9: spiffs_api_read at C:/Users/Usuario/esp/esp-idf/components/spiffs/spiffs_api.c:28

0x400da513: spiffs_phys_rd at C:/Users/Usuario/esp/esp-idf/components/spiffs/spiffs/src/spiffs_cache.c:161

0x400d8133: spiffs_obj_lu_find_entry_visitor at C:/Users/Usuario/esp/esp-idf/components/spiffs/spiffs/src/spiffs_nucleus.c:166

0x400da125: spiffs_obj_lu_find_free_obj_id at C:/Users/Usuario/esp/esp-idf/components/spiffs/spiffs/src/spiffs_nucleus.c:2164

0x400d6fa2: SPIFFS_open at C:/Users/Usuario/esp/esp-idf/components/spiffs/spiffs/src/spiffs_hydrogen.c:250

0x400d64be: vfs_spiffs_open at C:/Users/Usuario/esp/esp-idf/components/spiffs/esp_spiffs.c:531

0x400d4015: esp_vfs_open at C:/Users/Usuario/esp/esp-idf/components/vfs/vfs.c:404 (discriminator 3)

0x400de5e6: _fopen_r at /builds/idf/crosstool-NG/.build/HOST-x86_64-w64-mingw32/xtensa-esp32-elf/src/newlib/newlib/libc/stdio/fopen.c:129

0x400de699: fopen at /builds/idf/crosstool-NG/.build/HOST-x86_64-w64-mingw32/xtensa-esp32-elf/src/newlib/newlib/libc/stdio/fopen.c:168

0x400d5824: app_main at C:/Users/Usuario/Desktop/spiffs/main/spiffs_example_main.c:84 (discriminator 13)

0x400ece12: main_task at C:/Users/Usuario/esp/esp-idf/components/freertos/FreeRTOS-Kernel/portable/port_common.c:131 (discriminator 2)

0x400886d9: vPortTaskWrapper at C:/Users/Usuario/esp/esp-idf/components/freertos/FreeRTOS-Kernel/portable/xtensa/port.c:154


I (5456) example: File written
I (5456) example: Renaming file
I (5516) example: Reading file
I (5516) example: Read from file: 'Hello World!'
I (5516) example: SPIFFS unmounted

What's the log output before ?
It looks like the program/CPU 0 is busy doing something for about 5s before even the first write to the file. Is it formatting the SPIFFS partition?

Easiest fix may be to change the WDT configuration.