[ABANDONED] JLink debugging session stops in Eclipse with 0xdeadbeee

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  • [ABANDONED] JLink debugging session stops in Eclipse with 0xdeadbeee

    Hi,

    does anybody know the reason for this? JLink debugging in Eclipse stops every now and then without any user interaction. The only way to get out of this is to stop the debugging session completely and start over. Sometimes the issue happens within seconds or hours. Sometime x times in a row. Do not understand what the error/warning messages are leated to. Guess that address 0xdeadbeee is not taken coincidently.
    What to do to avoid this annoying issue?

    regards

    SPR

    Source Code

    1. last build T-AP-TEST [GDB SEGGER J-Link Debugging]
    2. last_build.elf
    3. Thread #2 (Suspended : Signal : SIGTRAP:Trace/breakpoint trap)
    4. 0xdeadbeee
    5. JLinkGDBServerCLExe
    6. arm-none-eabi-gdb
    7. Semihosting and SWV


    Shell-Script

    1. SEGGER J-Link GDB Server V6.88b Command Line Version
    3. JLinkARM.dll V6.88b (DLL compiled Nov 27 2020 15:44:17)
    5. Command line: -if swd -device ATSAMD21G18 -endian little -speed auto -port 2331 -swoport 2332 -telnetport 2333 -vd -ir -localhostonly 1 -singlerun -strict -timeout 0 -nogui -rtos GDBServer/RTOSPlugin_FreeRTOS
    6. -----GDB Server start settings-----
    7. GDBInit file: none
    8. GDB Server Listening port: 2331
    9. SWO raw output listening port: 2332
    10. Terminal I/O port: 2333
    11. Accept remote connection: localhost only
    12. Generate logfile: off
    13. Verify download: on
    14. Init regs on start: on
    15. Silent mode: off
    16. Single run mode: on
    17. Target connection timeout: 0 ms
    18. ------J-Link related settings------
    19. J-Link Host interface: USB
    20. J-Link script: none
    21. J-Link settings file: none
    22. ------Target related settings------
    23. Target device: ATSAMD21G18
    24. Target interface: SWD
    25. Target interface speed: auto
    26. Target endian: little
    28. Connecting to J-Link...
    29. J-Link is connected.
    30. Firmware: J-Link V10 compiled Nov 12 2020 10:06:35
    31. Hardware: V10.10
    32. S/N: 600105995
    33. Feature(s): RDI, FlashBP, FlashDL, JFlash, GDB
    34. Checking target voltage...
    35. Target voltage: 3.11 V
    36. Listening on TCP/IP port 2331
    37. Connecting to target...
    38. Connected to target
    39. Waiting for GDB connection...Connected to 127.0.0.1
    40. Reading all registers
    41. Read 4 bytes @ address 0x00000000 (Data = 0x20002D88)
    42. Read 2 bytes @ address 0x00000000 (Data = 0x2D88)
    43. Received monitor command: speed 1000
    44. Target interface speed set to 1000 kHz
    45. Received monitor command: clrbp
    46. Received monitor command: reset
    47. Resetting target
    48. Received monitor command: halt
    49. Halting target CPU...
    50. ...Target halted (PC = 0x00008408)
    51. Received monitor command: regs
    52. R0 = 00000000, R1 = 00002FDF, R2 = 42003000, R3 = 00000001
    53. R4 = 20002894, R5 = 00000181, R6 = 20002884, R7 = 00000000
    54. R8 = 00000000, R9 = 00000000, R10= 00000000, R11= 00000000
    55. R12= 00000000, R13= 20002D88, MSP= 20002D88, PSP= 20001740
    56. R14(LR) = 0001FC3F, R15(PC) = 00008408
    57. XPSR 21000000, APSR 20000000, EPSR 01000000, IPSR 00000000
    58. CFBP 00000000, CONTROL 00, FAULTMASK 00, BASEPRI 00, PRIMASK 00
    59. Reading all registers
    60. Received monitor command: speed auto
    61. Select auto target interface speed (2000 kHz)
    62. Received monitor command: flash breakpoints 1
    63. Flash breakpoints enabled
    64. Received monitor command: semihosting enable
    65. Semi-hosting enabled (Handle on BKPT)
    66. Received monitor command: semihosting IOClient 1
    67. Semihosting I/O set to TELNET Client
    68. Received monitor command: SWO DisableTarget 0xFFFFFFFF
    69. SWO disabled successfully.
    70. Received monitor command: SWO EnableTarget 0 0 0x1 0
    71. SWO enabled successfully.
    72. Loading RTOS plugin: /Applications/SEGGER/JLink_V688b/GDBServer/RTOSPlugin_FreeRTOS...
    73. Error: dlopen(/Applications/SEGGER/JLink_V688b/GDBServer/RTOSPlugin_FreeRTOS, 1): image not found
    74. Loading RTOS plugin: /Applications/SEGGER/JLink_V688b/GDBServer/RTOSPlugin_FreeRTOS.dylib...
    75. RTOS plugin (API v1.0) loaded successfully
    76. RTOS plugin: Loaded
    77. ...
    78. Received symbol: FreeRTOSDebugConfig (0x00000000)
    79. All mandatory symbols successfully loaded.
    80. Read 4 bytes @ address 0x00008408 (Data = 0x49354834)
    81. All mandatory symbols successfully loaded.
    82. Downloading 15984 bytes @ address 0x00000000 - Verified OK
    83. Downloading 15872 bytes @ address 0x00003E70 - Verified OK
    84. Downloading 15808 bytes @ address 0x00007C70 - Verified OK
    85. Downloading 16016 bytes @ address 0x0000BA30 - Verified OK
    86. Downloading 16096 bytes @ address 0x0000F8C0 - Verified OK
    87. Downloading 15936 bytes @ address 0x000137A0 - Verified OK
    88. Downloading 15952 bytes @ address 0x000175E0 - Verified OK
    89. Downloading 15968 bytes @ address 0x0001B430 - Verified OK
    90. Downloading 16000 bytes @ address 0x0001F290 - Verified OK
    91. Downloading 15840 bytes @ address 0x00023110 - Verified OK
    92. Downloading 16064 bytes @ address 0x00026EF0 - Verified OK
    93. Downloading 16288 bytes @ address 0x0002ADB0 - Verified OK
    94. Downloading 16336 bytes @ address 0x0002ED50 - Verified OK
    95. Downloading 2916 bytes @ address 0x00032D20 - Verified OK
    96. Downloading 8 bytes @ address 0x00033884 - Verified OK
    97. Downloading 1344 bytes @ address 0x0003388C - Verified OK
    98. Reading all registers
    99. Comparing flash [....................] Done.
    100. Read register 0 (4 bytes) from DLL: 00000000
    101. Read register 1 (4 bytes) from DLL: DF2F0000
    102. Read register 2 (4 bytes) from DLL: 00300042
    103. Read register 3 (4 bytes) from DLL: 01000000
    104. Read register 4 (4 bytes) from DLL: 94280020
    105. Read register 5 (4 bytes) from DLL: 81010000
    106. Read register 6 (4 bytes) from DLL: 84280020
    107. Read register 7 (4 bytes) from DLL: 00000000
    108. Read register 8 (4 bytes) from DLL: 00000000
    109. Read register 9 (4 bytes) from DLL: 00000000
    110. Read register 10 (4 bytes) from DLL: 00000000
    111. Read register 11 (4 bytes) from DLL: 00000000
    112. Read register 12 (4 bytes) from DLL: 00000000
    113. Read register 13 (4 bytes) from DLL: 882D0020
    114. Read register 14 (4 bytes) from DLL: 3FFC0100
    115. Read register 15 (4 bytes) from DLL: 08840000
    116. Read register 16 (4 bytes) from DLL: 00000021
    117. Read 4 bytes @ address 0x00008408 (Data = 0x49354834)
    118. Read 4 bytes @ address 0x00008408 (Data = 0x49354834)
    119. Reading 64 bytes @ address 0x00013280
    120. Read 4 bytes @ address 0x000132D0 (Data = 0x0002F074)
    121. Read 2 bytes @ address 0x000132BA (Data = 0x4805)
    122. Received monitor command: clrbp
    123. Received monitor command: reset
    124. Resetting target
    125. Received monitor command: halt
    126. Halting target CPU...
    127. ...Target halted (PC = 0x00008408)
    128. Received monitor command: regs
    129. R0 = 40001000, R1 = 00000000, R2 = 00000000, R3 = 00000000
    130. R4 = 20000654, R5 = 200006AC, R6 = 200006AC, R7 = 00000000
    131. R8 = 00000000, R9 = 00000000, R10= 00000000, R11= 00000000
    132. R12= 200005D8, R13= 20002D88, MSP= 20002D88, PSP= 20001740
    133. R14(LR) = 2000032F, R15(PC) = 00008408
    134. XPSR 61000000, APSR 60000000, EPSR 01000000, IPSR 00000000
    135. CFBP 00000000, CONTROL 00, FAULTMASK 00, BASEPRI 00, PRIMASK 00
    136. Reading all registers
    137. Read register 0 (4 bytes) from DLL: 00100040
    138. Read register 1 (4 bytes) from DLL: 00000000
    139. Read register 2 (4 bytes) from DLL: 00000000
    140. Read register 3 (4 bytes) from DLL: 00000000
    141. Read register 4 (4 bytes) from DLL: 54060020
    142. Read register 5 (4 bytes) from DLL: AC060020
    143. Read register 6 (4 bytes) from DLL: AC060020
    144. Read register 7 (4 bytes) from DLL: 00000000
    145. Read register 8 (4 bytes) from DLL: 00000000
    146. Read register 9 (4 bytes) from DLL: 00000000
    147. Read register 10 (4 bytes) from DLL: 00000000
    148. Read register 11 (4 bytes) from DLL: 00000000
    149. Read register 12 (4 bytes) from DLL: D8050020
    150. Read register 13 (4 bytes) from DLL: 882D0020
    151. Read register 14 (4 bytes) from DLL: 2F030020
    152. Read register 15 (4 bytes) from DLL: 08840000
    153. Read register 16 (4 bytes) from DLL: 00000061
    154. Setting breakpoint @ address 0x000132BA, Size = 2, BPHandle = 0x0001
    155. Starting target CPU...
    157. // upto here debugging works normal, suddendly is stops and session is paused
    159. ERROR: Cannot read register 15 (R15) while CPU is running
    160. ERROR: Could not read FreeRTOS thread count from target.
    161. Reading all registers
    162. ERROR: Cannot read register 0 (R0) while CPU is running
    163. Read register 0 (4 bytes) from DLL: EFBEADDE
    164. ERROR: Cannot read register 1 (R1) while CPU is running
    165. Read register 1 (4 bytes) from DLL: EFBEADDE
    166. ERROR: Cannot read register 2 (R2) while CPU is running
    167. Read register 2 (4 bytes) from DLL: EFBEADDE
    168. ERROR: Cannot read register 3 (R3) while CPU is running
    169. Read register 3 (4 bytes) from DLL: EFBEADDE
    170. ERROR: Cannot read register 4 (R4) while CPU is running
    171. Read register 4 (4 bytes) from DLL: EFBEADDE
    172. ERROR: Cannot read register 5 (R5) while CPU is running
    173. Read register 5 (4 bytes) from DLL: EFBEADDE
    174. ERROR: Cannot read register 6 (R6) while CPU is running
    175. Read register 6 (4 bytes) from DLL: EFBEADDE
    176. ERROR: Cannot read register 7 (R7) while CPU is running
    177. Read register 7 (4 bytes) from DLL: EFBEADDE
    178. ERROR: Cannot read register 8 (R8) while CPU is running
    179. Read register 8 (4 bytes) from DLL: EFBEADDE
    180. ERROR: Cannot read register 9 (R9) while CPU is running
    181. Read register 9 (4 bytes) from DLL: EFBEADDE
    182. ERROR: Cannot read register 10 (R10) while CPU is running
    183. Read register 10 (4 bytes) from DLL: EFBEADDE
    184. ERROR: Cannot read register 11 (R11) while CPU is running
    185. Read register 11 (4 bytes) from DLL: EFBEADDE
    186. ERROR: Cannot read register 12 (R12) while CPU is running
    187. Read register 12 (4 bytes) from DLL: EFBEADDE
    188. ERROR: Cannot read register 13 (R13) while CPU is running
    189. Read register 13 (4 bytes) from DLL: EFBEADDE
    190. ERROR: Cannot read register 14 (R14) while CPU is running
    191. Read register 14 (4 bytes) from DLL: EFBEADDE
    192. ERROR: Cannot read register 15 (R15) while CPU is running
    193. Read register 15 (4 bytes) from DLL: EFBEADDE
    194. ERROR: Cannot read register 16 (XPSR) while CPU is running
    195. Read register 16 (4 bytes) from DLL: EFBEADDE
    196. Removing breakpoint @ address 0x000132BA, Size = 2
    197. WARNING: Failed to read memory @ address 0xDEADBEEE
    198. WARNING: Failed to read memory @ address 0xDEADBEEE
    199. Setting breakpoint @ address 0x000132BA, Size = 2, BPHandle = 0x0002
    200. Starting target CPU...
    201. ERROR: CPU is not halted
    Display All

  • Hi SPR,
    Thank you for your inquiry and sorry for the delay in response.

    Are you working on an evaluation board or custom hardware?
    If eval board: Which one? If custom HW:
    Does this issue also occur on an evaluation board?
    Do you enable any Low Power Modes, turn of the debug clocks or similar?
    Does this Problem also appear when using a project with a simple do { Cnt++ } while (1); loop?
    If not, the issue is most likely connected to the application.

    Best regards,
    Fabian
    Please read the forum rules before posting.

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