SEGGER J-Link Commander V6.22f (Compiled Jan 12 2018 16:18:39)
DLL version V6.22f, compiled Jan 12 2018 16:18:01

Connecting to J-Link via USB...O.K.
Firmware: J-Link V9 compiled Jan 11 2018 11:06:30
Hardware version: V9.40
S/N: 269400428
License(s): FlashBP, GDB
OEM: SEGGER-EDU
VTref = 3.324V


Type "connect" to establish a target connection, '?' for help
J-Link>connect
Please specify device / core. <Default>: ATSAME54P20
Type '?' for selection dialog
Device>?
Please specify target interface:
  J) JTAG (Default)
  S) SWD
TIF>S
Specify target interface speed [kHz]. <Default>: 4000 kHz
Speed>4000
Device "ATSAME54P20" selected.


Connecting to target via SWD
Found SW-DP with ID 0x2BA01477
Scanning AP map to find all available APs
AP[2]: Stopped AP scan as end of AP map has been reached
AP[0]: AHB-AP (IDR: 0x24770011)
AP[1]: AHB-AP (IDR: 0x74770001)
Iterating through AP map to find AHB-AP to use
AP[0]: Core found
AP[0]: AHB-AP ROM base: 0x41003000
CPUID register: 0x410FC241. Implementer code: 0x41 (ARM)
Found Cortex-M4 r0p1, Little endian.
FPUnit: 6 code (BP) slots and 2 literal slots
CoreSight components:
ROMTbl[0] @ 41003000
ROMTbl[0][0]: E00FF000, CID: B105100D, PID: 000BB4C4 ROM Table
ROMTbl[1] @ E00FF000
ROMTbl[1][0]: E000E000, CID: B105E00D, PID: 000BB00C SCS-M7
ROMTbl[1][1]: E0001000, CID: B105E00D, PID: 003BB002 DWT
ROMTbl[1][2]: E0002000, CID: B105E00D, PID: 002BB003 FPB
ROMTbl[1][3]: E0000000, CID: B105E00D, PID: 003BB001 ITM
ROMTbl[1][4]: E0040000, CID: B105900D, PID: 000BB9A1 TPIU
ROMTbl[1][5]: E0041000, CID: B105900D, PID: 000BB925 ETM
ROMTbl[1][6]: E0042000, CID: B105900D, PID: 003BB907 ETB
Cortex-M4 identified.
J-Link>halt

**************************
WARNING: CPU could not be halted
**************************

J-Link>q

C:\Program Files (x86)\SEGGER\JLink_V622f>