AnsweredAssumed Answered

LPC1769 JLINK fail to read memory

Question asked by Haipeng Yan on Jan 5, 2017

Hi, 

    I have NXP PNEV512B (blueboard) and LPCXpresso1769 board for NFC development. I downloaded example library for NFC and tested with on-board debugger which everything runs fine. When I switched to J-link debugger (and shorted "on-board debugger" jumper). I received the following messages from J-link

 

SEGGER J-Link GDB Server V6.12c GUI Version

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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: 0x4BA00477 (Cortex-M3)
Connected to target
Waiting for GDB connection...Connected to 127.0.0.1
Reading all registers
Read 4 bytes @ address 0x00000000 (Data = 0x10008000)
Read 4 bytes @ address 0x00000000 (Data = 0x10008000)
Read 4 bytes @ address 0x00000000 (Data = 0x10008000)
WARNING: Failed to read memory @ address 0xFFFFFFF4
WARNING: Failed to read memory @ address 0xFFFFFFF4
Downloading 4096 bytes @ address 0x00000000
Downloading 988 bytes @ address 0x00001000
Writing register (PC = 0x44010000)
Read 4 bytes @ address 0x00000144 (Data = 0x4C1CB570)
Starting target CPU...
...Target halted (DBGRQ, PC = 0x00000ADE)

 

  Could someone help? Jlink connection seems to be fine.  What went wrong?

 

Many Thanks

Haipeng   

Original Attachment has been moved to: JLinkGDB.log.zip

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