when we select "TEST"(add via JLinkDevices.xml)，click “Target” ->"Connect J-Link",err,log as follow

Connecting ‘J-Link’ using ‘USB’
Loaded C:/Program Files/SEGGER/SEGGER Embedded Studio for RISC-V 5.34/bin/JLink_x64.dll
Firmware Version: J-Link V10 compiled Jan 4 2021 16:15:44
DLL Version: 6.92`
Hardware Version: V10.10
Target Voltage: 3.399
Device "TEST" selected.
Current Speed: 7827 kHz
TotalIRLen = ?, IRPrint = 0x..000000000000000000000000
TotalIRLen = ?, IRPrint = 0x..000000000000000000000000

Target connection has been lost

but use same hardware ,when we select default "RV32" or "RISC-V",click “Target” ->"Connect J-Link",ok,log as follow

Connecting ‘J-Link’ using ‘USB’
Loaded C:/Program Files/SEGGER/SEGGER Embedded Studio for RISC-V 5.34/bin/JLink_x64.dll
Firmware Version: J-Link V10 compiled Jan 4 2021 16:15:44
DLL Version: 6.92`
Hardware Version: V10.10
Target Voltage: 3.399
Device "RV32" selected.
Current Speed: 7827 kHz
ConfigTargetSettings() start
ConfigTargetSettings() end
TotalIRLen = 10, IRPrint = 0x0021
JTAG chain detection found 2 devices:
#0 Id: 0x00000001, IRLen: 05, Unknown device
#1 Id: 0x00000001, IRLen: 05, Unknown device
Debug architecture:
RISC-V debug: 0.13
AddrBits: 7
DataBits: 32
IdleClks: 5
Memory access:
Via system bus: Yes (8/16/32-bit accesses are supported)
Via ProgBuf: Yes (2 ProgBuf entries)
DataBuf: 1 entries
autoexec[0] implemented: Yes
Detected: RV32 core
CSR access via abs. commands: No
Temp. halted CPU for NumHWBP detection
HW instruction/data BPs: 4
Support set/clr BPs while running: No

HW data BPs trigger before execution of inst


why?


I want to know What is done in the “ ConfigTargetSettings() ”? Is that all right?

thanks.