72 CHAPTER 3 J-Link software and documentation package
J-Link / J-Trace (UM08001) ©
2004-2017 SEGGER Microcontroller GmbH & Co. KG
3.2.1 Commands
The table below lists the available commands of J-Link Commander. All commands
are listed in alphabetical order within their respective categories. Detailed descrip-
tions of the commands can be found in the sections that follow.
Command (short form) Explanation
Basic
clrBP Clear breakpoint.
clrWP Clear watchpoint.
device Selects a device.
erase Erase internal flash of selected device.
exec Execute command string.
exit (qc, q) Closes J-Link Commander.
exitonerror (eoe) Commander exits after error.
f Prints firmware info.
go (g) Starts the CPU core.
halt (h) Halts the CPU core.
hwinfo Show hardware info.
is Scan chain select register length.
loadfile Load data file into target memory.
log Enables log to file.
mem Read memory.
mem8 Read 8-bit items.
mem16 Read 16-bit items.
mem32 Read 32-bit items.
mem64 Read 64-bit items.
mr Measures reaction time of RTCK pin.
ms Measures length of scan chain.
power Switch power supply for target.
r Resets and halts the target.
readAP Reads from a CoreSight AP register.
readDP Reads from a CoreSight DP register.
regs Shows all current register values.
rnh Resets without halting the target.
rreg Shows a specific register value.
rx Reset target with delay.
savebin Saves target memory into binary file.
setBP Set breakpoint.
setPC Set the PC to specified value.
setWP Set watchpoint.
sleep Waits the given time (in milliseconds).
speed Set target interface speed.
st Shows the current hardware status.
step (s) Single step the target chip.
unlock Unlocks a device.
verifybin Compares memory with data file.
w1 Write 8-bit items.
w2 Write 16-bit items.
w4 Write 32-bit items.
writeAP Writes to a CoreSight AP register.
writeDP Writes to a CoreSight DP register.
wreg Write register.
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