usb--------连接目标板
r----------重启目标板
halt-------停止cpu运行的程序
loadbin----加载可执行的二进制文件
g----------跳到代码段地址执行
s----------单步执行（调试用）
setpc-----设置pc寄存器的值（调试用）
setbp-----设置断点
Regs-------读寄存器组织
wreg-------写寄存器
mem--------读内存
w4---------写内存
power off mmu---关闭mmu，这个对于裸板调试很重要
w4 cpsr,0x0000001f------切换到系统模式
speed------设置jtag的传输速率
rce 0,c0,c0,0-----设置cp15寄存器的第1个寄存器为0
详细介绍
----------------------
f Firmware info（显示固件信息）
h halt（暂停CPU）
g go（运行）
Sleep Waits the given time (in milliseconds). Syntax: Sleep （睡眠多少毫秒）
s Single step the target chip（单步调试目标芯片）
st Show hardware status（显示硬件状态）
hwinfo Show hardware info（显示硬件信息）
mem Read memory. Syntax: mem , (hex)（读内存）
mem8 Read 8-bit items. Syntax: mem8 , (hex)（读内存8字节）
mem16 Read 16-bit items. Syntax: mem16 , (hex)mem32 Read 32-bit items. Syntax: mem32 , (hex)
w1 Write 8-bit items. Syntax: w1 , (hex)（写内存8字节）
w2 Write 16-bit items. Syntax: w2 , (hex)（读内存16字节）
w4 Write 32-bit items. Syntax: w4 , (hex)（读内存32字节）
wm Write test words. Syntax: wm
is Identify length of scan chain select register
ms Measure length of scan chain. Syntax: ms
mr Measure RTCK react time. Syntax: mr
q Quit（推出）
qc Close JLink connection and quit（关闭jlink连接，并退出）
r Reset target (RESET)（重启目标）
rx Reset target (RESET). Syntax: rx （延时重启）
RSetType Set the current reset type. Syntax: RSetType
Regs Display contents of registers（显示寄存器信息）
wreg Write register. Syntax: wreg , （写继承器）
SetBP Set breakpoint. Syntax: SetBP [A/T] [S/H]（设置断点）
SetWP Set Watchpoint. Syntax: [R/W] [ [] [A-Mask]]（设置监视点）
ClrBP Clear breakpoint. Syntax: ClrBP （清除断点）
ClrWP Clear watchpoint. Syntax: ClrWP （清楚监视点）
VCatch Write vector catch. Syntax: VCatch
loadbin Load binary file into target memory.（下载bin文件到目标内存）
Syntax: loadbin ,
savebin Saves target memory into binary file.（保存BIN文件）
Syntax: savebin , ,
SetPC Set the PC to specified value. Syntax: SetPC （设置PC（r15）寄存器）
le Change to little endian mode（设置成小端模式）
be Change to big endian mode（设置成大端模式）
log Enables log to file. Syntax: log
unlock Unlocks a device. Syntax: unlock
Type unlock without to get a list
of supported device names.
nRESET has to be connected
---- CP15 ------------
rce Read CP15. Syntax: rce , , , （读CP15）
wce Write CP15. Syntax: wce , , , , (写CP15)
---- ICE -------------
Ice Show state of the embedded ice macrocell (ICE breaker)
ri Read Ice reg. Syntax: ri (hex)
wi Write Ice reg. Syntax: wi , (hex)
---- ETM -------------
etm Show ETM status
re Read ETM reg. Syntax: re
we Write ETM reg. Syntax: we , (hex)
es Start trace
---- ETB -------------
etb Show ETB status
rb Read ETB register. Syntax: rb
wb Write ETB register. Syntax: wb , (hex)
---- TRACE -----------
TAddBranch TRACE - Add branch instruction to trace buffer. Paras:,
TAddInst TRACE - Add (non-branch) instruction to trace buffer. Syntax:
TClear TRACE - Clear buffer
TSetSize TRACE - Set Size of trace buffer
TSetFormat TRACE - SetFormat
TSR TRACE - Show Regions (and analyze trace buffer)
TStart TRACE - Start
TStop TRACE - Stop
---- SWO -------------
SWOSpeed SWO - Show supported speeds
SWOStart SWO - Start
SWOStop SWO - Stop
SWOStat SWO - Display SWO status
SWORead SWO - Read and display SWO data
SWOShow SWO - Read and analyze SWO data
SWOFlush SWO - Flush data
---- File I/O --------
fwrite Write file to emulator
fread Read file from emulator
fshow Read and display file from emulator
fdelete Delete file on emulator
fsize Display size of file on emulator
---- Test ------------
thg Run go/halt 1000 times
ts Run step 1000 times
testwspeed Test download speed. Syntax: testwspeed [ []]
testrspeed Test upload speed. Syntax: testrspeed [ [] [
s>]]
testcspeed Test CPU speed. Syntax: testcspeed []
---- JTAG ------------
Config Set number of IR/DR bits before ARM device.
Syntax: Config ,
speed Set JTAG speed. Syntax: speed |auto|adaptive, e.g. speed 2000,
speed a
i Read JTAG Id (Host CPU)
wjc Write JTAG command (IR). Syntax: wjc (hex)
wjd Write JTAG data (DR). Syntax: wjd (hex), (dec)
RTAP Reset TAP Controller using state machine (111110)
wjraw Write Raw JTAG data. Syntax: wjraw , ,
rt Reset TAP Controller (nTRST)
---- JTAG-Hardware ---
c00 Create clock with TDI = TMS = 0
c Clock
0 Clear TDI
1 Set TDI
t0 Clear TMS
t1 Set TMS
trst0 Clear TRST
trst1 Set TRST
r0 Clear RESET
r1 Set RESET
---- Connection ------
usb Connect to J-Link via USB. Syntax: usb , where port is 0..3
ip Connect to J-Link ARM Pro or J-Link TCP/IP Server via TCP/IP.
Syntax: ip
---- Configuration ---
si Select target interface. Syntax: si ,
where 0=JTAG and 1=SWD.
power Switch power supply for target. Syntax: power [perm],
where State is either On or Off. Example: power on perm
wconf Write configuration byte. Syntax: wconf ,
rconf Read configuration bytes. Syntax: rconf
usbaddr Assign usb address to the connected J-Link: Syntax: usbaddr =
ipaddr Show/Assign IP address and subnetmask of/to the connected J-Link.
gwaddr Show/Assign network gateway address of/to the connected J-Link.
dnsaddr Show/Assign network DNS server address of/to the connected J-Link.
conf Show configuration of the connected J-Link.
ecp Enable the J-Link control panel.
calibrate Calibrate the target current measurement.
selemu Select a emulator to communicate with,
from a list of all emulators which are connected to the host
The interfaces to search on, can be specified
Syntax: selemu [ ...]
ShowEmuList Shows a list of all emulators which are connected to the host.
The interfaces to search on, can be specified.
Syntax: ShowEmuList [ ...]
----------------------
NOTE: Specifying a filename in command line
will start J-Link Commander in script mode.
