ESP32不断重启,无法加载app区域

[mymail_012]

用的芯片是esp32-u4wd,编译sdk默认例子hello-world,下载到板子上无法启动,一直看门狗复位,无法进入到app部份,能正常加载bootloader,停留在cpu_start: Pro cpu up,过几秒钟就看门狗复位重启了,请问这是什么原因引起的?下面是启动的log打印

rst:0x10 (RTCWDT_RTC_RESET),boot:0x12 (SPI_FAST_FLASH_BOOT)
configsip: 188777542, 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:6980
load:0x40078000,len:14336
ho 0 tail 12 room 4
load:0x40080400,len:3708
0x40080400: _init at ??:?

entry 0x40080680
I (30) boot: ESP-IDF v4.3.1 2nd stage bootloader
I (30) boot: compile time 10:21:39
I (30) boot: chip revision: 3
I (33) boot_comm: chip revision: 3, min. bootloader chip revision: 0
I (40) boot.esp32: SPI Speed : 80MHz
I (45) boot.esp32: SPI Mode : DIO
I (49) boot.esp32: SPI Flash Size : 4MB
I (54) boot: Enabling RNG early entropy source...
I (59) boot: Partition Table:
I (63) boot: ## Label Usage Type ST Offset Length
I (70) boot: 0 nvs WiFi data 01 02 00009000 00004000
I (77) boot: 1 otadata OTA data 01 00 0000d000 00002000
I (85) boot: 2 phy_init RF data 01 01 0000f000 00001000
I (92) boot: 3 factory factory app 00 00 00010000 00100000
I (100) boot: 4 ota_0 OTA app 00 10 00110000 00100000
I (107) boot: 5 ota_1 OTA app 00 11 00210000 00100000
I (115) boot: End of partition table
I (119) boot: Defaulting to factory image
I (124) boot_comm: chip revision: 3, min. application chip revision: 0
I (131) esp_image: segment 0: paddr=00010020 vaddr=3f400020 size=06d24h ( 27940) map
I (148) esp_image: segment 1: paddr=00016d4c vaddr=3ffb0000 size=028e0h ( 10464) load
I (152) esp_image: segment 2: paddr=00019634 vaddr=40080000 size=069e4h ( 27108) load
I (166) esp_image: segment 3: paddr=00020020 vaddr=400d0020 size=13b88h ( 80776) map
I (191) esp_image: segment 4: paddr=00033bb0 vaddr=400869e4 size=04328h ( 17192) load
I (197) esp_image: segment 5: paddr=00037ee0 vaddr=50000000 size=00010h ( 16) load
I (203) boot: Loaded app from partition at offset 0x10000
I (203) boot: Disabling RNG early entropy source...
I (219) cpu_start: Pro cpu up.

[swwyQAQ]

问题解决了吗，我也是启动之后无法加载app程序，一直停留在I (0) cpu_start: Starting scheduler on APP CPU.