ESP32 Forum

This dev kit keeps resetting. Have tried different cables (cable works ok with other kits), restarting ide etc. Found a ResetReason.ino in the examples. Following is what it prints to serial monitor. Does any of this show how to fix the resetting?
CPU0 reset reason:
SW_CPU_RESET
Software reset CPU
CPU1 reset reason:
SW_CPU_RESET
Software reset CPU

assert failed: esp_sleep_pd_config sleep_modes.c:2347 (refs >= 0)


Backtrace: 0x40081a78:0x3ffb20a0 0x40088d09:0x3ffb20c0 0x4008e949:0x3ffb20e0 0x400f41f1:0x3ffb2220 0x400d19c4:0x3ffb2240 0x400d43f7:0x3ffb2270 0x40089691:0x3ffb2290




ELF file SHA256: b270ae81d

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

rst:0xc (SW_CPU_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:1
load:0x3fff0030,len:4980
load:0x40078000,len:16612
load:0x40080400,len:3480
entry 0x400805b4
[ 1][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RX (2) successfully set to 0x400d3038
[ 12][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_TX (3) successfully set to 0x400d3008
[ 26][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_CTS (4) successfully set to 0x400d2fd8
[ 39][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RTS (5) successfully set to 0x400d2fa8
[ 53][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RX (2) successfully set to 0x400d3038
[ 66][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_TX (3) successfully set to 0x400d3008
[ 80][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_CTS (4) successfully set to 0x400d2fd8
[ 93][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RTS (5) successfully set to 0x400d2fa8
[ 107][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RX (2) successfully set to 0x400d3038
[ 120][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_TX (3) successfully set to 0x400d3008
[ 133][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_CTS (4) successfully set to 0x400d2fd8
[ 147][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RTS (5) successfully set to 0x400d2fa8
[ 177][D][esp32-hal-cpu.c:276] setCpuFrequencyMhz(): PLL: 480 / 2 = 240 Mhz, APB: 80000000 Hz
[ 192][V][esp32-hal-periman.c:160] perimanSetPinBus(): Pin 3 successfully set to type UART_RX (2) with bus 0x3ffbdb60
[ 203][V][esp32-hal-periman.c:160] perimanSetPinBus(): Pin 1 successfully set to type UART_TX (3) with bus 0x3ffbdb60
=========== Before Setup Start ===========
Chip Info:
------------------------------------------
Model : ESP32
Package : D0WD-Q5
Revision : 3.01
Cores : 2
CPU Frequency : 240 MHz
XTAL Frequency : 40 MHz
Features Bitfield : 0x00000032
Embedded Flash : No
Embedded PSRAM : No
2.4GHz WiFi : Yes
Classic BT : Yes
BT Low Energy : Yes
IEEE 802.15.4 : No
=========== Before Setup Start ===========
Chip Info:
------------------------------------------
Model : ESP32
Package : D0WD-Q5
Revision : 3.01
Cores : 2
CPU Frequency : 240 MHz
XTAL Frequency : 40 MHz
Features Bitfield : 0x00000032
Embedded Flash : No
Embedded PSRAM : No
2.4GHz WiFi : Yes
Classic BT : Yes
BT Low Energy : Yes
IEEE 802.15.4 : No
------------------------------------------
INTERNAL Memory Info:
------------------------------------------
Total Size : 373880 B ( 365.1 KB)
Free Bytes : 332880 B ( 325.1 KB)
Allocated Bytes : 33824 B ( 33.0 KB)
Minimum Free Bytes: 327184 B ( 319.5 KB)
Largest Free Block: 110580 B ( 108.0 KB)
------------------------------------------
Flash Info:
------------------------------------------
Chip Size : 4194304 B (4 MB)
Block Size : 65536 B ( 64.0 KB)
Sector Size : 4096 B ( 4.0 KB)
Page Size : 256 B ( 0.2 KB)
Bus Speed : 80 MHz
Bus Mode : QIO
------------------------------------------
Partitions Info:
------------------------------------------
nvs : addr: 0x00009000, size: 20.0 KB, type: DATA, subtype: NVS
otadata : addr: 0x0000E000, size: 8.0 KB, type: DATA, subtype: OTA
app0 : addr: 0x00010000, size: 1280.0 KB, type: APP, subtype: OTA_0
app1 : addr: 0x00150000, size: 1280.0 KB, type: APP, subtype: OTA_1
spiffs : addr: 0x00290000, size: 1408.0 KB, type: DATA, subtype: SPIFFS
coredump : addr: 0x003F0000, size: 64.0 KB, type: DATA, subtype: COREDUMP
------------------------------------------
Software Info:
------------------------------------------
Compile Date/Time : Aug 27 2025 12:13:35
Compile Host OS : windows
ESP-IDF Version : v5.5-1-gb66b5448e0
Arduino Version : 3.3.0
------------------------------------------
Board Info:
------------------------------------------
Arduino Board : ESP32_DEV
Arduino Variant : esp32
Arduino FQBN : esp32:esp32:esp32:UploadSpeed=921600,CPUFreq=240,FlashFreq=80,FlashMode=qio,FlashSize=4M,PartitionScheme=default,DebugLevel=verbose,PSRAM=disabled,LoopCore=1,EventsCore=1,EraseFlash=none,JTAGAdapter=default,ZigbeeMode=default
============ Before Setup End ============
[ 712][V][esp32-hal-uart.c:707] uartBegin(): UART0 baud(115200) Mode(800001c) rxPin(3) txPin(1)
[ 720][V][esp32-hal-uart.c:805] uartBegin(): UART0 not installed. Starting installation
[ 730][V][esp32-hal-uart.c:815] uartBegin(): UART0 RX FIFO full threshold set to 120 (value requested: 120 || FIFO Max = 128)
[ 744][V][esp32-hal-uart.c:845] uartBegin(): Setting UART0 to use REF_TICK clock
[ 754][V][esp32-hal-uart.c:905] uartBegin(): UART0 initialization done.
[ 769][V][esp32-hal-uart.c:956] uartSetRxFIFOFull(): UART0 RX FIFO Full value set to 120 from a requested value of 120

You would need to either decode the backtrace or post some code. It looks like it is having an issue with your sleep settings (perhaps a power domain is not available).