Command (long)

Command (short)

Explanation

Basic

 ?

?

Show information about all or specific commands

Exit

Exit

Close J-Link connection and quit

ExitOnError

EoE

Exit on error

Sleep

Sleep

Waits the given time (in milliseconds)

Log

Log

Enables log to file

ExpDevList

ExpDevList

Export device names from DLL internal device list to text file

ExpDevListXML

ExpDevListXML

Export device names from DLL internal device list to XML file

Configuration - J-Link

USB

USB

Connect to J-Link via USB

IP

IP

Connect to J-Link via TCP/IP or to Remote Server

SelectProbe

SelPrb

Show list of all connected probes via specified interface. The Probe to communicate with can then be selected

ShowEmuList

ShowEmuList

Show list of all connected probes via specified interface

Power

Power

Switch power supply for target (5V-Supply pin) on or off

VTREF

VTREF

Set fixed value for VTref on J-Link

VCOM

VCOM

Enable/disable VCOM Takes effect after power cycle of the probe

Reboot

Reboot

Reboots the connected probe.

ShowFWInfo

F

Show firmware info

ShowHWStatus

St

Show hardware status

License

License

Show list of all available license commands

IPAddr

IPAddr

Show/Assign IP address and subnetmask of/to connected Probe

GWAddr

GWAddr

Show/Assign network gateway address of/to connected Probe

DNSAddr

DNSAddr

Show/Assign network DNS server address of/to connected Probe

ShowConf

Conf

Show configuration of the connected Probe

Calibrate

Calib

Calibrate the target current measurement

Configuration - Target (CPU)

Connect

Con

Connect to target device

Device

Device

Select specific device J-Link shall connect to

SelectInterface

SI

Select target interface

Speed

Speed

Set target interface speed

LE

LE

Change mode to little endian

BE

BE

Change mode to big endian

Debugging

Halt

H

Halt CPU

IsHalted

IH

Return current CPU state

WaitHalt

WH

Wait until CPU is halted or timeout is reached

Go

G

Start CPU if halted

Reset

R

Reset CPU

ResetX

RX

Reset CPU with delay after reset

RSetType

Rst

Set the current reset type

Step

S

Execute step(s) on the CPU

IS

IS

Identify length of scan chain select register

MS

MS

Measure length of scan chain

Regs

Regs

Display CPU register contents

RReg

RReg

Read register

WReg

WReg

Write register

MoE

MoE

Shows mode-of-entry (CPU halt reason)

SetBP

SetBP

Set breakpoint

ClearBP

ClrBP

Clear breakpoint

SetWP

SetWP

Set watchpoint

ClearWP

ClrWP

Clear watchpoint

VCatch

VC

Write vector catch

SetPC

SetPC

Set the PC to specified value

ReadAP

ReadAP

Read CoreSight AP register

WriteAP

WriteAP

Write CoreSight AP register

ReadDP

ReadDP

Read CoreSight DP register

WriteDP

WriteDP

Write CoreSight DP register

RCP15Ex

RCE

Read CP15 register

WCP15Ex

WCE

Write CP15 register

Term

Term

Visualize printf output using DCC (SEGGER DCC handler running on target)

Debugging - Memory operation

Mem

Mem

Read memory and show corresponding ASCII values

Mem8

Mem8

Read 8-bit items

Mem16

Mem16

Read 16-bit items

Mem32

Mem32

Read 32-bit items

Write1

W1

Write 8-bit items

Write2

W2

Write 16-bit items

Write4

W4

Write 32-bit items

Debugging - JTAG related

JTAGConf

JTAGConf

Set number of IR/DR bits before Target device

JTAGId

I

Read JTAG Id

WJTAGIR

WJIR

Write JTAG command (IR)

WJTAGDR

WJDR

Write JTAG data (DR)

WJTAGRaw

WJR

Write Raw JTAG data

ResetTAP

RTAP

Reset TAP Controller using state machine (111110)

ResetTRST

RT

Reset TAP Controller using nTRST

Debugging - ICE

ICE

ICE

Show state of the embedded ICE macrocell (ICE breaker)

ReadICE

RI

Read Ice register

WriteICE

WI

Write Ice register

TRACE

TClear

TC

Clear TRACE buffer

TSetSize

TSS

Set TRACE size of trace buffer

TSetFormat

TSF

Set TRACE Format

TShowRegions

TSR

Show TRACE Regions (and analyze trace buffer)

TStart

TStart

Start TRACE

TStop

TStop

Stop TRACE

SWO

SWOSpeed

SWOSpeed

Show supported SWO speeds

SWOStart

SWOStart

Start SWO

SWOStop

SWOStop

Stop SWO

SWOStat

SWOStat

Display SWO status

SWORead

SWORead

Read and display SWO data

SWOShow

SWOShow

Read and analyze SWO data

SWOFlush

SWOFlush

Flush SWO data

SWOView

SWOView

View SWO terminal data

Flash programming

Erase

Erase

Erase flash (range) of selected device

LoadFile

LoadFile

Load data file into target memory

SaveBin

SaveBin

Save target memory range into binary file

VerifyBin

VerifyBin

Verfy if specified bin file is at the specified target memory location

Flasher File I/O Commands

FWrite

FWr

(Flasher only) Write file to probe

FRead

FRd

(Flasher only) Read file from probe

FShow

FShow

(Flasher only) Read and display file from probe

FDelete

FDel

(Flasher only) Delete file on probe

FSize

FSz

(Flasher only) Display size of file on probe

FList

FList

(Flasher only) List directory on probe

SecureArea

SecureArea

(Flasher only) Creates/Removes secure area on probe

Measurement and test commands

PowerTrace

PowerTrace

Perform power trace (not supported by all models)

TestWSpeed

TestW

Measure download speed into target memory

TestRSpeed

TestR

Measure upload speed from target memory

TestCSpeed

TestC

Measure CPU speed

TestNWSpeed

TestNW

Measure network download speed

TestNRSpeed

TestNR

Measure network upload speed

MR

MR

Measure RTCK react time

J-Link Pin control

Clock

C

Output clock(s) on the TCK pin

Clock00

C00

Output clock(s) on the TCK pin, with TDI == 0 and TMS == 0

ClrTCK

TCK0

Clear TCK pin

SetTCK

TCK1

Set TCK pin

ClrTDI

TDI0

Clear TDI pin

SetTDI

TDI1

Set TDI pin

ClrTMS

TMS0

Clear TMS pin

SetTMS

TMS1

Set TMS pin

ClrTRST

TRST0

Clear TRST pin

SetTRST

TRST1

Set TRST pin

ClrRESET

R0

Clear RESET pin

SetRESET

R1

Set RESET pin