[ABANDONED] JLink GDB server : WARNING: Failed to read memory @ address 0x280306C0 Starting target CPU...

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  • [ABANDONED] JLink GDB server : WARNING: Failed to read memory @ address 0x280306C0 Starting target CPU...

    I running c++ Program in Eclipse for Keil MCB2100 micromicriumOSII board LPC2100.

    I can able to builprogram program successfully. while debugging using JLinkSegger Debugger I resulting in following error when I type command "continue" in gdb server.

    Connected to targetWaiting for GDB connection...Connected to 127.0.0.1Reading all registersRead 4 bytes @ address 0x0000018C (Data = 0xE3500000)"WARNING: Failed to read memory @ address 0x280306C0Starting target CPU... "

    How to proceed with this error. please help me out , Thank you in advance :)


    SEGGER J-Link GDB Server V5.00c GUI Version

    JLinkARM.dll V5.00c (DLL compiled Jun 11 2015 11:40:27)

    -----GDB Server start settings-----
    GDBInit file: none
    GDB Server Listening port: 2331
    SWO raw output listening port: 2332
    Terminal I/O port: 2333
    Accept remote connection: localhost only
    Generate logfile: on
    Verify download: on
    Init regs on start: off
    Silent mode: off
    Single run mode: off
    Target connection timeout: 5000 ms
    ------J-Link related settings------
    J-Link Host interface: USB
    J-Link script: none
    J-Link settings file: none
    ------Target related settings------
    Target device: Unspecified
    Target interface: JTAG
    Target interface speed: 0kHz
    Target endian: little

    Connecting to J-Link...
    J-Link is connected.
    Firmware: J-Link ARM V8 compiled Nov 28 2014 13:44:46
    Hardware: V8.00
    S/N: 268002449
    OEM: SEGGER-EDU
    Feature(s): FlashBP, GDB
    Checking target voltage...
    Target voltage: 3.30 V
    Listening on TCP/IP port 2331
    Connecting to target...
    J-Link found 1 JTAG device, Total IRLen = 4
    JTAG ID: 0x4F1F0F0F (ARM7)
    Connected to target
    Waiting for GDB connection...Connected to 127.0.0.1
    Reading all registers
    Read 4 bytes @ address 0x0000018C (Data = 0xE3500000)
    WARNING: Failed to read memory @ address 0x280306C0
    Starting target CPU...
  • Hi,

    In 99% of the cases it is GDB that is requesting memory contents at the given location.
    GDBServer itself usually does not request memory contents etc. on its own, only when being asked by GDB.
    Could you please check your Eclipse environment for open memory windows, variable watches etc. that may point to this address or to an address near the one that causes the problem?
    Is this location anywhere near the current PC or stackpointer?


    Best regards
    Alex
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