NCS version:v1.5.1
board:nRF5340DK(0.11.0)
first,i use SES Embedded open radio_test project and choose nrf5340dk_nrf5340_cpunet ,and use [west flash --erase] download net core code after build in SES.

second,i use SES open empty_app_core project and choose nrf5340dk_nrf5340_cpuappns,and use [west flash] download app core code after build in SES.

three serial port in my PC : come13/com14/com15, some data returns from com15:
SPM: NS image at 0x8000
SPM: NS MSP at 0x20008498
SPM: NS reset vector at 0x83f1
SPM: prepare to jump to Non-Secure image.?** Booting Zephyr OS build v2.4.99-ncs2 ***
Flash regions Domain Permissions
00 01 0x00000 0x08000 Secure rwxl
02 63 0x08000 0x100000 Non-Secure rwxl
Non-secure callable region 0 placed in flash region 1 with size 32.
SRAM region Domain Permissions
00 03 0x00000 0x08000 Secure rwxl
04 63 0x08000 0x80000 Non-Secure rwxl
Peripheral Domain Status
00 NRF_P0 Non-Secure OK
01 NRF_CLOCK Non-Secure OK
02 NRF_RTC0 Non-Secure OK
03 NRF_RTC1 Non-Secure OK
04 NRF_NFCT Non-Secure OK
05 NRF_NVMC Non-Secure OK
06 NRF_UARTE1 Non-Secure OK
07 NRF_UARTE2 Secure SKIP
08 NRF_TWIM2 Non-Secure OK
09 NRF_SPIM3 Non-Secure OK
10 NRF_TIMER0 Non-Secure OK
11 NRF_TIMER1 Non-Secure OK
12 NRF_TIMER2 Non-Secure OK
13 NRF_SAADC Non-Secure OK
14 NRF_PWM0 Non-Secure OK
15 NRF_PWM1 Non-Secure OK
16 NRF_PWM2 Non-Secure OK
17 NRF_PWM3 Non-Secure OK
18 NRF_IPC Non-Secure OK
19 NRF_VMC Non-Secure OK
20 NRF_FPU Non-Secure OK
21 NRF_EGU1 Non-Secure OK
22 NRF_EGU2 Non-Secure OK
23 NRF_DPPIC Non-Secure OK
24 NRF_REGULATORS Non-Secure OK
25 NRF_DCNF Secure SKIP
26 NRF_CTRLAP Secure SKIP
27 NRF_SPIM4 Non-Secure OK
28 NRF_WDT0 Non-Secure OK
29 NRF_WDT1 Non-Secure OK
30 NRF_COMP Non-Secure OK
31 NRF_LPCOMP Non-Secure OK
32 NRF_PDM0 Non-Secure OK
33 NRF_I2S0 Non-Secure OK
34 NRF_QSPI Non-Secure OK
35 NRF_NFCT Non-Secure OK
36 NRF_MUTEX Non-Secure OK
37 NRF_QDEC0 Non-Secure OK
38 NRF_QDEC1 Non-Secure OK
39 NRF_USBD Non-Secure OK
40 NRF_USBREGULATOR Non-Secure OK
41 NRF_P1 Non-Secure OK
42 NRF_OSCILLATORS Non-Secure OK
43 NRF_RESET Non-Secure OK
44 NRF_GPIOTE1 Non-Secure OK
but when i send some debugging commands to com13 or 14,nothing return.