jlink使用方法笔记.docx

jlink使用方法笔记 这段时间在用jlink调试freescale的mx51板子，下面将使用jlink的方法在此做一个笔记。 jlink是segger公司的产品，由于正版的工具巨贵，所以现在大部分人都喜欢用山寨版的jlink，幸运的是我的山寨版jlink支持arm cortex a8，所以能调试mx51板子。 jlink的官方提供调试软件和驱动，调试软件有jlink commander（j-tag调试）、j-mem（内存查看）、j-flash（flash烧写）等。我主要用到的是jlink commander，以下是它的命令集：SEGGER J-Link Commander V4.20h (? for help)Compiled Oct 5 2010 19:11:57DLL version V4.20h, compiled Oct 5 2010 19:11:41Firmware: J-Link ARM V8 compiled Oct 5 2010 08:59:59Hardware: V8.00S/N: 20100214Feature(s): RDI,FlashDL,FlashBP,JFlash,GDBFullVTarget = 3.280VInfo: TotalIRLen = ?, IRPrint = 0x.FFFFFFFFFFFFFFFFFFFFFFF1WARNING: CPU core not found.No devices found on JTAG chain. Trying to find device on SWD.WARNING: CPU core not found.* Error: Parity error (Data = 0xFFFFFFFF, ReceivedParity = 1)No device found on SWD.Did not find any core.Info: TotalIRLen = 9, IRPrint = 0x0011Found 2 JTAG devices, Total IRLen = 5:#0 Id: 0x2B900F0F, IRLen: 04, IRPrint: 0x0, ARM ETB#1 Id: 0x07B76F0F, IRLen: 05, IRPrint: 0x1, ARM1176 CoreARM11 identified.J-LinkAvailable commands are:-f Firmware infoh haltg goSleep Waits the given time (in milliseconds). Syntax: Sleep s Single step the target chipst Show hardware statushwinfo Show hardware infomem Read memory. Syntax: mem , (hex)mem8 Read 8-bit items. Syntax: mem8 , (hex)mem16 Read 16-bit items. Syntax: mem16 , (hex)mem32 Read 32-bit items. Syntax: mem32 , (hex)w1 Write 8-bit items. Syntax: w1 , (hex)w2 Write 16-bit items. Syntax: w2 , (hex)w4 Write 32-bit items. Syntax: w4 , (hex)wm Write test words. Syntax: wm is Identify length of scan chain select registerms Measure length of scan chain. Syntax: ms mr Measure RTCK react time. Syntax: mrq Quitqc Close JLink connection and quitr Reset target (RESET)rx Reset target (RESET). Syntax: rx RSetType Set the current reset type. Syntax: RSetType Regs Display contents of registerswreg Write register. Syntax: wreg , SetBP Set breakpoint. Syntax: SetBP A/T S/HSetWP Set Watchpoint. Syntax: R/W A-MaskClrBP Clear breakpoint. Syntax: ClrBP ClrWP Clear watchpoint. Syntax: ClrWP VCatch Write vector catch. Syntax: VCatch loadbin Load binary file into target memory. Syntax: loadbin , savebin Saves target memory into binary file. Syntax: savebin , , SetPC Set the PC to specified value. Syntax: SetPC le Change to little endian modebe Change to big endian modelog 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 , , , wce Write CP15. Syntax: wce , , , , - 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 statusre Read ETM reg. Syntax: re we Write ETM reg. Syntax: we , (hex)es Start trace- ETB -etb Show ETB statusrb 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 bufferTSetSize TRACE - Set Size of trace bufferTSetFormat TRACE - SetFormatTSR TRACE - Show Regions (and analyze trace buffer)TStart TRACE - StartTStop TRACE - Stop- SWO -SWOSpeed SWO - Show supported speedsSWOStart SWO - StartSWOStop SWO - StopSWOStat SWO - Display SWO statusSWORead SWO - Read and display SWO dataSWOShow SWO - Read and analyze SWO dataSWOFlush SWO - Flush data- File I/O -fwrite Write file to emulatorfread Read file from emulatorfshow Read and display file from emulatorfdelete Delete file on emulatorfsize Display size of file on emulator- Test -thg Run go/halt 1000 timests Run step 1000 timestestwspeed Test download speed. Syntax: testwspeed testrspeed Test upload speed. Syntax: testrspeed 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 ai 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 = 0c Clock0 Clear TDI1 Set TDIt0 Clear TMSt1 Set TMStrst0 Clear TRSTtrst1 Set TRSTr0 Clear RESETr1 Set RESET- Connection -usb Connect to J-Link via USB. Syntax: usb , where port is 0.3ip 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 permwconf Write configuration byte. Syntax: wconf , rconf Read configuration bytes. Syntax: rconfusbaddr 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.-NOTE: Specifying a filename in command linewill start J-Link Commander