Hello,

I’m trying to flash/debug an ESP8266 ESP-07 module with a 4 mbit flash. I use the FreeRTOS Webserver example, press debug and the following error is shown:
<pre style=”padding-left: 30px;”>C:\SysGCC\esp8266\python27\python.exe “C:\SysGCC\esp8266\esp8266-bsp\esptool.py” elf2image “C:\Users\DrNok\Documents\embedded\ESP8266\EmbeddedProject4\EmbeddedProject4/Debug/EmbeddedProject4.elf” –flash_freq 40m –flash_mode qio –flash_size 2m
mon reset halt
&”mon reset halt\n”
&”\”monitor\” command not supported by this target.\n”
^error,msg=”\”monitor\” command not supported by this target.”
-exec-next-instruction
001^done
^error,msg=”The program is not being run.”
set $com_sysprogs_esp8266_wdcfg=0
&”set $com_sysprogs_esp8266_wdcfg=0\n”
^done
set $vecbase=0x40000000
&”set $vecbase=0x40000000\n”
&”No registers.\n”
^error,msg=”No registers.”
set *(0x3fffc200)=0
&”set *(0x3fffc200)=0\n”
&”Cannot access memory at address 0x3fffc200\n”
^error,msg=”Cannot access memory at address 0x3fffc200″
set $ccompare=0
&”set $ccompare=0\n”
^done
set $intclear=-1
&”set $intclear=-1\n”
&”No registers.\n”
^error,msg=”No registers.”
set $intenable=0
&”set $intenable=0\n”
&”No registers.\n”
^error,msg=”No registers.”
print *((int *)0x60000900)
&”print *((int *)0x60000900)\n”
&”Cannot access memory at address 0x60000900\n”
^error,msg=”Cannot access memory at address 0x60000900″
set *((int *)0x60000900)=0
&”set *((int *)0x60000900)=0\n”
&”Cannot access memory at address 0x60000900\n”
^error,msg=”Cannot access memory at address 0x60000900″
restore C:/SysGCC/esp8266/esp8266-bsp/sysprogs/flashprog/ESP8266FlashProg.bin binary 0x40100000 0 0x1a4
&”restore C:/SysGCC/esp8266/esp8266-bsp/sysprogs/flashprog/ESP8266FlashProg.bin binary 0x40100000 0 0x1a4\n”
&”You can’t do that without a process to debug.\n”
^error,msg=”You can’t do that without a process to debug.”
flushregs
&”flushregs\n”
~”Register cache flushed.\n”
^done
set $epc2=0x40100074
&”set $epc2=0x40100074\n”
&”No registers.\n”
^error,msg=”No registers.”
set $ps=0x20
&”set $ps=0x20\n”
&”No registers.\n”
^error,msg=”No registers.”
set $sp=0x3fffc000
&”set $sp=0x3fffc000\n”
&”No registers.\n”
^error,msg=”No registers.”
set *((unsigned *)0x3fff8008)=0
&”set *((unsigned *)0x3fff8008)=0\n”
&”Cannot access memory at address 0x3fff8008\n”
^error,msg=”Cannot access memory at address 0x3fff8008″
set *((unsigned *)0x3fff800c)=4096
&”set *((unsigned *)0x3fff800c)=4096\n”
&”Cannot access memory at address 0x3fff800c\n”
^error,msg=”Cannot access memory at address 0x3fff800c”
set *((unsigned *)0x3fff8010)=4096
&”set *((unsigned *)0x3fff8010)=4096\n”
&”Cannot access memory at address 0x3fff8010\n”
^error,msg=”Cannot access memory at address 0x3fff8010″
set *((unsigned *)0x3fff8014)=4294967295
&”set *((unsigned *)0x3fff8014)=4294967295\n”
&”Cannot access memory at address 0x3fff8014\n”
^error,msg=”Cannot access memory at address 0x3fff8014″
set $intclear=-1
&”set $intclear=-1\n”
&”No registers.\n”
^error,msg=”No registers.”
set $intenable=0
&”set $intenable=0\n”
&”No registers.\n”
^error,msg=”No registers.”
-exec-continue
^error,msg=”The program is not being run.”
-data-evaluate-expression “\*\(\(unsigned\ \*\)0x3fff8014\)”
^error,msg=”Cannot access memory at address 0x3fff8014″
mon reset halt
&”mon reset halt\n”
&”\”monitor\” command not supported by this target.\n”
-exec-next-instruction
^error,msg=”\”monitor\” command not supported by this target.”
001^done
^error,msg=”The program is not being run.”
set $com_sysprogs_esp8266_wdcfg=0
&”set $com_sysprogs_esp8266_wdcfg=0\n”
^done
set $vecbase=0x40000000
&”set $vecbase=0x40000000\n”
&”No registers.\n”
^error,msg=”No registers.”
set *(0x3fffc200)=0
&”set *(0x3fffc200)=0\n”
&”Cannot access memory at address 0x3fffc200\n”
^error,msg=”Cannot access memory at address 0x3fffc200″
set $ccompare=0
&”set $ccompare=0\n”
^done
set $intclear=-1
&”set $intclear=-1\n”
&”No registers.\n”
^error,msg=”No registers.”
set $intenable=0
&”set $intenable=0\n”
&”No registers.\n”
^error,msg=”No registers.”
print *((int *)0x60000900)
&”print *((int *)0x60000900)\n”
&”Cannot access memory at address 0x60000900\n”
^error,msg=”Cannot access memory at address 0x60000900″
set *((int *)0x60000900)=0
&”set *((int *)0x60000900)=0\n”
&”Cannot access memory at address 0x60000900\n”
^error,msg=”Cannot access memory at address 0x60000900″
restore C:/SysGCC/esp8266/esp8266-bsp/sysprogs/flashprog/ESP8266FlashProg.bin binary 0x40100000 0 0x1a4
&”restore C:/SysGCC/esp8266/esp8266-bsp/sysprogs/flashprog/ESP8266FlashProg.bin binary 0x40100000 0 0x1a4\n”
&”You can’t do that without a process to debug.\n”
^error,msg=”You can’t do that without a process to debug.”
flushregs
&”flushregs\n”
~”Register cache flushed.\n”
^done
set $epc2=0x40100074
&”set $epc2=0x40100074\n”
&”No registers.\n”
^error,msg=”No registers.”
set $ps=0x20
&”set $ps=0x20\n”
&”No registers.\n”
^error,msg=”No registers.”
set $sp=0x3fffc000
&”set $sp=0x3fffc000\n”
&”No registers.\n”
^error,msg=”No registers.”
set *((unsigned *)0x3fff8008)=0
&”set *((unsigned *)0x3fff8008)=0\n”
&”Cannot access memory at address 0x3fff8008\n”
^error,msg=”Cannot access memory at address 0x3fff8008″
set *((unsigned *)0x3fff800c)=4096
&”set *((unsigned *)0x3fff800c)=4096\n”
&”Cannot access memory at address 0x3fff800c\n”
^error,msg=”Cannot access memory at address 0x3fff800c”
set *((unsigned *)0x3fff8010)=4096
&”set *((unsigned *)0x3fff8010)=4096\n”
&”Cannot access memory at address 0x3fff8010\n”
^error,msg=”Cannot access memory at address 0x3fff8010″
set *((unsigned *)0x3fff8014)=4294967295
&”set *((unsigned *)0x3fff8014)=4294967295\n”
&”Cannot access memory at address 0x3fff8014\n”
^error,msg=”Cannot access memory at address 0x3fff8014″
set $intclear=-1
&”set $intclear=-1\n”
&”No registers.\n”
^error,msg=”No registers.”
set $intenable=0
&”set $intenable=0\n”
&”No registers.\n”
^error,msg=”No registers.”
-exec-continue
^error,msg=”The program is not being run.”
-data-evaluate-expression “\*\(\(unsigned\ \*\)0x3fff8014\)”
^error,msg=”Cannot access memory at address 0x3fff8014″
mon reset halt
&”mon reset halt\n”
&”\”monitor\” command not supported by this target.\n”
^error,msg=”\”monitor\” command not supported by this target.”
-exec-next-instruction
001^done
^error,msg=”The program is not being run.”
set $com_sysprogs_esp8266_wdcfg=0
&”set $com_sysprogs_esp8266_wdcfg=0\n”
^done
set $vecbase=0x40000000
&”set $vecbase=0x40000000\n”
&”No registers.\n”
^error,msg=”No registers.”
set *(0x3fffc200)=0
&”set *(0x3fffc200)=0\n”
&”Cannot access memory at address 0x3fffc200\n”
^error,msg=”Cannot access memory at address 0x3fffc200″
set $ccompare=0
&”set $ccompare=0\n”
^done
set $intclear=-1
&”set $intclear=-1\n”
&”No registers.\n”
^error,msg=”No registers.”
set $intenable=0
&”set $intenable=0\n”
&”No registers.\n”
^error,msg=”No registers.”
print *((int *)0x60000900)
&”print *((int *)0x60000900)\n”
&”Cannot access memory at address 0x60000900\n”
^error,msg=”Cannot access memory at address 0x60000900″
set *((int *)0x60000900)=0
&”set *((int *)0x60000900)=0\n”
&”Cannot access memory at address 0x60000900\n”
^error,msg=”Cannot access memory at address 0x60000900″
restore C:/SysGCC/esp8266/esp8266-bsp/sysprogs/flashprog/ESP8266FlashProg.bin binary 0x40100000 0 0x1a4
&”restore C:/SysGCC/esp8266/esp8266-bsp/sysprogs/flashprog/ESP8266FlashProg.bin binary 0x40100000 0 0x1a4\n”
&”You can’t do that without a process to debug.\n”
^error,msg=”You can’t do that without a process to debug.”
flushregs
&”flushregs\n”
~”Register cache flushed.\n”
^done
set $epc2=0x40100074
&”set $epc2=0x40100074\n”
&”No registers.\n”
^error,msg=”No registers.”
set $ps=0x20
&”set $ps=0x20\n”
&”No registers.\n”
^error,msg=”No registers.”
set $sp=0x3fffc000
&”set $sp=0x3fffc000\n”
&”No registers.\n”
^error,msg=”No registers.”
set *((unsigned *)0x3fff8008)=0
&”set *((unsigned *)0x3fff8008)=0\n”
&”Cannot access memory at address 0x3fff8008\n”
^error,msg=”Cannot access memory at address 0x3fff8008″
set *((unsigned *)0x3fff800c)=4096
&”set *((unsigned *)0x3fff800c)=4096\n”
&”Cannot access memory at address 0x3fff800c\n”
^error,msg=”Cannot access memory at address 0x3fff800c”
set *((unsigned *)0x3fff8010)=4096
&”set *((unsigned *)0x3fff8010)=4096\n”
&”Cannot access memory at address 0x3fff8010\n”
^error,msg=”Cannot access memory at address 0x3fff8010″
set *((unsigned *)0x3fff8014)=4294967295
&”set *((unsigned *)0x3fff8014)=4294967295\n”
&”Cannot access memory at address 0x3fff8014\n”
^error,msg=”Cannot access memory at address 0x3fff8014″
set $intclear=-1
&”set $intclear=-1\n”
&”No registers.\n”
^error,msg=”No registers.”
set $intenable=0
&”set $intenable=0\n”
&”No registers.\n”
^error,msg=”No registers.”
-exec-continue
^error,msg=”The program is not being run.”
-data-evaluate-expression “\*\(\(unsigned\ \*\)0x3fff8014\)”
^error,msg=”Cannot access memory at address 0x3fff8014″
 

Then another error Window is shown:
<pre style=”padding-left: 30px;”>(gdb begin)
VisualGDB is licensed to Martin Kunz
C:\SysGCC\esp8266\bin\xtensa-lx106-elf-gdb.exe –interpreter mi C:\Users\DrNok\Documents\embedded\ESP8266\EmbeddedProject4\EmbeddedProject4/Debug/EmbeddedProject4.elf
-list-features
=thread-group-added,id=”i1″
~”GNU gdb (GDB) 7.5.1\n”
~”Copyright (C) 2012 Free Software Foundation, Inc.\n”
~”License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html&gt;\nThis is free software: you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitted by law.  Type \”show copying\”\nand \”show warranty\” for details.\n”
<pre style=”padding-left: 30px;”>
~”This GDB was configured as \”–host=i686-pc-mingw32 –target=xtensa-lx106-elf\”.\nFor bug reporting instructions, please see:\n”
<pre style=”padding-left: 30px;”>
~”<http://www.gnu.org/software/gdb/bugs/>&#8230;\n”
~”Reading symbols from C:\\Users\\DrNok\\Documents\\embedded\\ESP8266\\EmbeddedProject4\\EmbeddedProject4\\Debug\\EmbeddedProject4.elf…”
~”done.\n”
^done,features=[“frozen-varobjs”,”pending-breakpoints”,”thread-info”,”data-read-memory-bytes”,”breakpoint-notifications”,”ada-task-info”]
-gdb-set stop-on-solib-events 1
^done
-gdb-set disassembly-flavor intel
^error,msg=”No symbol \”disassembly\” in current context.”
-gdb-set print demangle off
^done
-gdb-version
~”GNU gdb (GDB) 7.5.1\n”
~”Copyright (C) 2012 Free Software Foundation, Inc.\n”
~”License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html&gt;\nThis is free software: you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitted by law.  Type \”show copying\”\nand \”show warranty\” for details.\n”
<pre style=”padding-left: 30px;”>
~”This GDB was configured as \”–host=i686-pc-mingw32 –target=xtensa-lx106-elf\”.\nFor bug reporting instructions, please see:\n”
<pre style=”padding-left: 30px;”>
~”<http://www.gnu.org/software/gdb/bugs/&gt;.\n”
^done
-break-insert -f main
&”Function \”main\” not defined.\n”
^done,bkpt={number=”1″,type=”breakpoint”,disp=”keep”,enabled=”y”,addr=”<PENDING>”,pending=”main”,times=”0″,original-location=”main”}
Warning: could not set a breakpoint on main. ‘Step into new instance’ will not work.
-break-delete 1
^done
target remote :3333
&”target remote :3333\n”
&”:3333: Ein Verbindungsversuch ist fehlgeschlagen, da die Gegenstelle nach einer bestimmten Zeitspanne nicht richtig reagiert hat, oder die hergestellte Verbindung war fehlerhaft, da der verbundene Host nicht reagiert hat.\n”
^error,msg=”:3333: Ein Verbindungsversuch ist fehlgeschlagen, da die Gegenstelle nach einer bestimmten Zeitspanne nicht richtig reagiert hat, oder die hergestellte Verbindung war fehlerhaft, da der verbundene Host nicht reagiert hat.”
mon reset halt
&”mon reset halt\n”
&”\”monitor\” command not supported by this target.\n”
^error,msg=”\”monitor\” command not supported by this target.”
-exec-next-instruction
001^done
^error,msg=”The program is not being run.”
set $com_sysprogs_esp8266_wdcfg=0
&”set $com_sysprogs_esp8266_wdcfg=0\n”
^done
set $vecbase=0x40000000
&”set $vecbase=0x40000000\n”
&”No registers.\n”
^error,msg=”No registers.”
set *(0x3fffc200)=0
&”set *(0x3fffc200)=0\n”
&”Cannot access memory at address 0x3fffc200\n”
^error,msg=”Cannot access memory at address 0x3fffc200″
set $ccompare=0
&”set $ccompare=0\n”
^done
set $intclear=-1
&”set $intclear=-1\n”
&”No registers.\n”
^error,msg=”No registers.”
set $intenable=0
&”set $intenable=0\n”
&”No registers.\n”
^error,msg=”No registers.”
print *((int *)0x60000900)
&”print *((int *)0x60000900)\n”
&”Cannot access memory at address 0x60000900\n”
^error,msg=”Cannot access memory at address 0x60000900″
set *((int *)0x60000900)=0
&”set *((int *)0x60000900)=0\n”
&”Cannot access memory at address 0x60000900\n”
^error,msg=”Cannot access memory at address 0x60000900″
restore C:/SysGCC/esp8266/esp8266-bsp/sysprogs/flashprog/ESP8266FlashProg.bin binary 0x40100000 0 0x1a4
&”restore C:/SysGCC/esp8266/esp8266-bsp/sysprogs/flashprog/ESP8266FlashProg.bin binary 0x40100000 0 0x1a4\n”
&”You can’t do that without a process to debug.\n”
^error,msg=”You can’t do that without a process to debug.”
flushregs
&”flushregs\n”
~”Register cache flushed.\n”
^done
set $epc2=0x40100074
&”set $epc2=0x40100074\n”
&”No registers.\n”
^error,msg=”No registers.”
set $ps=0x20
&”set $ps=0x20\n”
&”No registers.\n”
^error,msg=”No registers.”
set $sp=0x3fffc000
&”set $sp=0x3fffc000\n”
&”No registers.\n”
^error,msg=”No registers.”
set *((unsigned *)0x3fff8008)=0
&”set *((unsigned *)0x3fff8008)=0\n”
&”Cannot access memory at address 0x3fff8008\n”
^error,msg=”Cannot access memory at address 0x3fff8008″
set *((unsigned *)0x3fff800c)=4096
&”set *((unsigned *)0x3fff800c)=4096\n”
&”Cannot access memory at address 0x3fff800c\n”
^error,msg=”Cannot access memory at address 0x3fff800c”
set *((unsigned *)0x3fff8010)=4096
&”set *((unsigned *)0x3fff8010)=4096\n”
&”Cannot access memory at address 0x3fff8010\n”
^error,msg=”Cannot access memory at address 0x3fff8010″
set *((unsigned *)0x3fff8014)=4294967295
&”set *((unsigned *)0x3fff8014)=4294967295\n”
&”Cannot access memory at address 0x3fff8014\n”
^error,msg=”Cannot access memory at address 0x3fff8014″
set $intclear=-1
&”set $intclear=-1\n”
&”No registers.\n”
^error,msg=”No registers.”
set $intenable=0
&”set $intenable=0\n”
&”No registers.\n”
^error,msg=”No registers.”
-exec-continue
^error,msg=”The program is not being run.”
-data-evaluate-expression “\*\(\(unsigned\ \*\)0x3fff8014\)”
^error,msg=”Cannot access memory at address 0x3fff8014″
mon reset halt
&”mon reset halt\n”
&”\”monitor\” command not supported by this target.\n”
^error,msg=”\”monitor\” command not supported by this target.”
-exec-next-instruction
001^done
^error,msg=”The program is not being run.”
set $com_sysprogs_esp8266_wdcfg=0
&”set $com_sysprogs_esp8266_wdcfg=0\n”
^done
set $vecbase=0x40000000
&”set $vecbase=0x40000000\n”
&”No registers.\n”
^error,msg=”No registers.”
set *(0x3fffc200)=0
&”set *(0x3fffc200)=0\n”
&”Cannot access memory at address 0x3fffc200\n”
^error,msg=”Cannot access memory at address 0x3fffc200″
set $ccompare=0
&”set $ccompare=0\n”
^done
set $intclear=-1
&”set $intclear=-1\n”
&”No registers.\n”
^error,msg=”No registers.”
set $intenable=0
&”set $intenable=0\n”
&”No registers.\n”
^error,msg=”No registers.”
print *((int *)0x60000900)
&”print *((int *)0x60000900)\n”
&”Cannot access memory at address 0x60000900\n”
^error,msg=”Cannot access memory at address 0x60000900″
set *((int *)0x60000900)=0
&”set *((int *)0x60000900)=0\n”
&”Cannot access memory at address 0x60000900\n”
^error,msg=”Cannot access memory at address 0x60000900″
restore C:/SysGCC/esp8266/esp8266-bsp/sysprogs/flashprog/ESP8266FlashProg.bin binary 0x40100000 0 0x1a4
&”restore C:/SysGCC/esp8266/esp8266-bsp/sysprogs/flashprog/ESP8266FlashProg.bin binary 0x40100000 0 0x1a4\n”
&”You can’t do that without a process to debug.\n”
^error,msg=”You can’t do that without a process to debug.”
flushregs
&”flushregs\n”
~”Register cache flushed.\n”
^done
set $epc2=0x40100074
&”set $epc2=0x40100074\n”
&”No registers.\n”
^error,msg=”No registers.”
set $ps=0x20
&”set $ps=0x20\n”
&”No registers.\n”
^error,msg=”No registers.”
set $sp=0x3fffc000
&”set $sp=0x3fffc000\n”
&”No registers.\n”
^error,msg=”No registers.”
set *((unsigned *)0x3fff8008)=0
&”set *((unsigned *)0x3fff8008)=0\n”
&”Cannot access memory at address 0x3fff8008\n”
^error,msg=”Cannot access memory at address 0x3fff8008″
set *((unsigned *)0x3fff800c)=4096
&”set *((unsigned *)0x3fff800c)=4096\n”
&”Cannot access memory at address 0x3fff800c\n”
^error,msg=”Cannot access memory at address 0x3fff800c”
set *((unsigned *)0x3fff8010)=4096
&”set *((unsigned *)0x3fff8010)=4096\n”
&”Cannot access memory at address 0x3fff8010\n”
^error,msg=”Cannot access memory at address 0x3fff8010″
set *((unsigned *)0x3fff8014)=4294967295
&”set *((unsigned *)0x3fff8014)=4294967295\n”
&”Cannot access memory at address 0x3fff8014\n”
^error,msg=”Cannot access memory at address 0x3fff8014″
set $intclear=-1
&”set $intclear=-1\n”
&”No registers.\n”
^error,msg=”No registers.”
set $intenable=0
&”set $intenable=0\n”
&”No registers.\n”
^error,msg=”No registers.”
-exec-continue
^error,msg=”The program is not being run.”
-data-evaluate-expression “\*\(\(unsigned\ \*\)0x3fff8014\)”
^error,msg=”Cannot access memory at address 0x3fff8014″
mon reset halt
&”mon reset halt\n”
&”\”monitor\” command not supported by this target.\n”
^error,msg=”\”monitor\” command not supported by this target.”
-exec-next-instruction
001^done
^error,msg=”The program is not being run.”
set $com_sysprogs_esp8266_wdcfg=0
&”set $com_sysprogs_esp8266_wdcfg=0\n”
^done
set $vecbase=0x40000000
&”set $vecbase=0x40000000\n”
&”No registers.\n”
^error,msg=”No registers.”
set *(0x3fffc200)=0
&”set *(0x3fffc200)=0\n”
&”Cannot access memory at address 0x3fffc200\n”
^error,msg=”Cannot access memory at address 0x3fffc200″
set $ccompare=0
&”set $ccompare=0\n”
^done
set $intclear=-1
&”set $intclear=-1\n”
&”No registers.\n”
^error,msg=”No registers.”
set $intenable=0
&”set $intenable=0\n”
&”No registers.\n”
^error,msg=”No registers.”
print *((int *)0x60000900)
&”print *((int *)0x60000900)\n”
&”Cannot access memory at address 0x60000900\n”
^error,msg=”Cannot access memory at address 0x60000900″
set *((int *)0x60000900)=0
&”set *((int *)0x60000900)=0\n”
&”Cannot access memory at address 0x60000900\n”
^error,msg=”Cannot access memory at address 0x60000900″
restore C:/SysGCC/esp8266/esp8266-bsp/sysprogs/flashprog/ESP8266FlashProg.bin binary 0x40100000 0 0x1a4
&”restore C:/SysGCC/esp8266/esp8266-bsp/sysprogs/flashprog/ESP8266FlashProg.bin binary 0x40100000 0 0x1a4\n”
&”You can’t do that without a process to debug.\n”
^error,msg=”You can’t do that without a process to debug.”
flushregs
&”flushregs\n”
~”Register cache flushed.\n”
^done
set $epc2=0x40100074
&”set $epc2=0x40100074\n”
&”No registers.\n”
^error,msg=”No registers.”
set $ps=0x20
&”set $ps=0x20\n”
&”No registers.\n”
^error,msg=”No registers.”
set $sp=0x3fffc000
&”set $sp=0x3fffc000\n”
&”No registers.\n”
^error,msg=”No registers.”
set *((unsigned *)0x3fff8008)=0
&”set *((unsigned *)0x3fff8008)=0\n”
&”Cannot access memory at address 0x3fff8008\n”
^error,msg=”Cannot access memory at address 0x3fff8008″
set *((unsigned *)0x3fff800c)=4096
&”set *((unsigned *)0x3fff800c)=4096\n”
&”Cannot access memory at address 0x3fff800c\n”
^error,msg=”Cannot access memory at address 0x3fff800c”
set *((unsigned *)0x3fff8010)=4096
&”set *((unsigned *)0x3fff8010)=4096\n”
&”Cannot access memory at address 0x3fff8010\n”
^error,msg=”Cannot access memory at address 0x3fff8010″
set *((unsigned *)0x3fff8014)=4294967295
&”set *((unsigned *)0x3fff8014)=4294967295\n”
&”Cannot access memory at address 0x3fff8014\n”
^error,msg=”Cannot access memory at address 0x3fff8014″
set $intclear=-1
&”set $intclear=-1\n”
&”No registers.\n”
^error,msg=”No registers.”
set $intenable=0
&”set $intenable=0\n”
&”No registers.\n”
^error,msg=”No registers.”
-exec-continue
^error,msg=”The program is not being run.”
-data-evaluate-expression “\*\(\(unsigned\ \*\)0x3fff8014\)”
^error,msg=”Cannot access memory at address 0x3fff8014″
mon xtensa_no_interrupts_during_steps on
&”mon xtensa_no_interrupts_during_steps on\n”
&”\”monitor\” command not supported by this target.\n”
^error,msg=”\”monitor\” command not supported by this target.”
mon esp8266_autofeed_watchdog on
&”mon esp8266_autofeed_watchdog on\n”
&”\”monitor\” command not supported by this target.\n”
^error,msg=”\”monitor\” command not supported by this target.”
info target
&”info target\n”
~”Symbols from \”C:\\Users\\DrNok\\Documents\\embedded\\ESP8266\\EmbeddedProject4\\EmbeddedProject4\\Debug\\EmbeddedProject4.elf\”.\n”
~”Local exec file:\n”
~”\t`C:\\Users\\DrNok\\Documents\\embedded\\ESP8266\\EmbeddedProject4\\EmbeddedProject4\\Debug\\EmbeddedProject4.elf’, file type elf32-xtensa-le.\n”
~”\tEntry point: 0x40100004\n”
~”\t0x3ffe8000 – 0x3ffe839a is .data\n”
~”\t0x3ffe83a0 – 0x3ffe867c is .rodata\n”
~”\t0x3ffe8680 – 0x3fff0148 is .bss\n”
~”\t0x40100000 – 0x40106555 is .text\n”
~”\t0x40240000 – 0x4027a5dd is .irom0.text\n”
^done
set *((int *)0x60000900)=$com_sysprogs_esp8266_wdcfg
&”set *((int *)0x60000900)=$com_sysprogs_esp8266_wdcfg\n”
&”Cannot access memory at address 0x60000900\n”
^error,msg=”Cannot access memory at address 0x60000900″
-exec-continue
^error,msg=”The program is not being run.”
set $com_sysprogs_esp8266_wdcfg=*((int *)0x60000900)
— GDBServer output —
Open On-Chip Debugger 0.9.0 (2015-11-04-20:38)
<pre style=”padding-left: 30px;”>Licensed under GNU GPL v2
<pre style=”padding-left: 30px;”>For bug reports, read
<pre style=”padding-left: 30px;”> http://openocd.org/doc/doxygen/bugs.html
<pre style=”padding-left: 30px;”>trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain connect_deassert_srst
<pre style=”padding-left: 30px;”>adapter speed: 1000 kHz
<pre style=”padding-left: 30px;”>stop_wdt
<pre style=”padding-left: 30px;”>adapter speed: 1000 kHz
<pre style=”padding-left: 30px;”>Error: libusb_open() failed with LIBUSB_ERROR_NOT_SUPPORTED
<pre style=”padding-left: 30px;”>Error: Cannot find jlink Interface! Please check connection and permissions.
When I try to debug again, the only the following error is shown:
<p style=”padding-left: 30px;”>am Files (x86)\Sysprogs\VisualGDB\vgagent.exe C:\SysGCC\esp8266\esp8266-bsp\openocd\bin\openocd.exe -f interface/jlink.cfg -f target/esp8266.cfg -c “adapter_khz 1000”
Open On-Chip Debugger 0.9.0 (2015-11-04-20:38)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain connect_deassert_srst
adapter speed: 1000 kHz
stop_wdt
adapter speed: 1000 kHz
Error: libusb_open() failed with LIBUSB_ERROR_NOT_SUPPORTED
Error: Cannot find jlink Interface! Please check connection and permissions.

</p>
I tried a genuine j-link PRO and j-link EDU, when opening Visual GDB Project Properties -> Debug Settings

Debug Method: OpenOCD is selected. When clicking on Detect, “Detected Segger J-Link” is shown. When using the Arduino Toolchain the board works pretty well, power supply has enough output current. Both j-link work with STM32 cores without any problem. Does anyone have a tip what I’m doing wrong?