---
** [tickets:#365] Cannot debug using openocd**
**Status:** new
**Milestone:** 0.11.0
**Created:** Wed Sep 28, 2022 11:54 AM UTC by HaoboGu
**Last Updated:** Wed Sep 28, 2022 11:54 AM UTC
**Owner:** nobody
Hello, I'm using openocd to flash and debug my custom stm32h7b0vbt6 board. The
flashing is good, but I cannot debug my board with st-link **after I added
qspi** and re-generate my code using CubeMX, openocd reports:
~~~
[2022-09-28T11:45:23.982Z] SERVER CONSOLE DEBUG: onBackendConnect: gdb-server
session connected. You can switch to "DEBUG CONSOLE" to see GDB interactions.
openocd -c "gdb_port 50000" -c "tcl_port 50001" -c "telnet_port 50002" -s
/Users/haobogu/Projects/others/stm32/h7b0 -f
/Users/haobogu/.vscode/extensions/marus25.cortex-debug-1.6.5/support/openocd-helpers.tcl
-f openocd.cfg
Open On-Chip Debugger 0.11.0+dev-00873-g219cb9598 (2022-09-14-03:28)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
CDRTOSConfigure
Info : The selected transport took over low-level target control. The results
might differ compared to plain JTAG/SWD
none separate
Info : Listening on port 50001 for tcl connections
Info : Listening on port 50002 for telnet connections
Info : clock speed 1800 kHz
Info : STLINK V2J29S7 (API v2) VID:PID 0483:3748
Info : Target voltage: 2.827092
Info : [stm32h7b0xx.cpu0] Cortex-M7 r1p1 processor detected
Info : [stm32h7b0xx.cpu0] target has 8 breakpoints, 4 watchpoints
Info : starting gdb server for stm32h7b0xx.cpu0 on 50000
Info : Listening on port 50000 for gdb connections
Info : accepting 'gdb' connection on tcp/50000
target halted due to debug-request, current mode: Thread
xPSR: 0x21000000 pc: 0x08000bcc msp: 0x2001ffa0
Info : Device: STM32H7Ax/7Bx
Info : flash size probed value 128k
Info : STM32H7 flash has a single bank
Info : Bank (0) size is 128 kb, base address is 0x08000000
Error: jtag status contains invalid mode value - communication failure
Polling target stm32h7b0xx.cpu0 failed, trying to reexamine
Examination failed, GDB will be halted. Polling again in 100ms
Error: read_memory: read at 0x5c001004 with width=32 and count=1 failed
Error executing event examine-end on target stm32h7b0xx.cpu0:
/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg:237:
Error: read_memory: failed to read memory
in procedure 'ocd_process_reset'
in procedure 'ocd_process_reset_inner' called at file "embedded:startup.tcl",
line 1193
in procedure 'stm32h7x_dbgmcu_mmw' called at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 170
in procedure 'stm32h7x_mmw' called at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 260
in procedure 'stm32h7x_mrw' called at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 242
at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 237
Info : Previous state query failed, trying to reconnect
Error: jtag status contains invalid mode value - communication failure
Polling target stm32h7b0xx.cpu0 failed, trying to reexamine
Examination failed, GDB will be halted. Polling again in 300ms
Error: read_memory: read at 0x5c001004 with width=32 and count=1 failed
Error executing event examine-end on target stm32h7b0xx.cpu0:
/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg:237:
Error: read_memory: failed to read memory
in procedure 'ocd_process_reset'
in procedure 'ocd_process_reset_inner' called at file "embedded:startup.tcl",
line 1193
in procedure 'stm32h7x_dbgmcu_mmw' called at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 170
in procedure 'stm32h7x_mmw' called at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 260
in procedure 'stm32h7x_mrw' called at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 242
at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 237
Error executing event gdb-flash-erase-start on target stm32h7b0xx.cpu0:
Error: error while reading from address 0x5200200c
Error: error while writing to address 0x5200200c
Error: error during the lock of flash
Error: failed erasing sectors 0 to 2
Error: flash_erase returned -4
Info : Previous state query failed, trying to reconnect
Error: jtag status contains invalid mode value - communication failure
Polling target stm32h7b0xx.cpu0 failed, trying to reexamine
Examination failed, GDB will be halted. Polling again in 700ms
Error: read_memory: read at 0x5c001004 with width=32 and count=1 failed
Error executing event examine-end on target stm32h7b0xx.cpu0:
/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg:237:
Error: read_memory: failed to read memory
in procedure 'ocd_process_reset'
in procedure 'ocd_process_reset_inner' called at file "embedded:startup.tcl",
line 1193
in procedure 'stm32h7x_dbgmcu_mmw' called at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 170
in procedure 'stm32h7x_mmw' called at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 260
in procedure 'stm32h7x_mrw' called at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 242
at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 237
shutdown command invoked
~~~
And GDB reports:
~~~
in procedure 'ocd_process_reset_inner' called at file "embedded:startup.tcl",
line 1193
GDB -> App:
{"output":"","outOfBandRecord":[{"isStream":true,"type":"target","content":"in
procedure 'stm32h7x_dbgmcu_mmw' called at file
\"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg\",
line 170\n"}]}
in procedure 'stm32h7x_dbgmcu_mmw' called at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 170
GDB -> App:
{"output":"","outOfBandRecord":[{"isStream":true,"type":"target","content":"in
procedure 'stm32h7x_mmw' called at file
\"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg\",
line 260\n"}]}
in procedure 'stm32h7x_mmw' called at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 260
GDB -> App:
{"output":"","outOfBandRecord":[{"isStream":true,"type":"target","content":"in
procedure 'stm32h7x_mrw' called at file
\"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg\",
line 242\n"}]}
in procedure 'stm32h7x_mrw' called at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 242
GDB -> App:
{"output":"","outOfBandRecord":[{"isStream":true,"type":"target","content":"at
file
\"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg\",
line 237\n"}]}
at file
"/opt/homebrew/Cellar/open-ocd/HEAD-219cb95/bin/../share/openocd/scripts/target/stm32h7x.cfg",
line 237
GDB -> App:
{"output":"","outOfBandRecord":[{"isStream":true,"type":"target","content":"Previous
state query failed, trying to reconnect\n"}]}
Previous state query failed, trying to reconnect
GDB -> App:
{"output":"","outOfBandRecord":[{"isStream":true,"type":"target","content":"jtag
status contains invalid mode value - communication failure\n"}]}
jtag status contains invalid mode value - communication failure
GDB -> App:
{"output":"","outOfBandRecord":[{"isStream":true,"type":"target","content":"Polling
target stm32h7b0xx.cpu0 failed, trying to reexamine\n"}]}
Polling target stm32h7b0xx.cpu0 failed, trying to reexamine
GDB -> App:
{"output":"","outOfBandRecord":[{"isStream":true,"type":"target","content":"Examination
failed, GDB will be halted. Polling again in 300ms\n"}]}
Examination failed, GDB will be halted. Polling again in 300ms
GDB -> App:
{"output":"","outOfBandRecord":[{"isStream":true,"type":"target","content":"\n"}]}
GDB -> App:
{"output":"","token":10,"outOfBandRecord":[],"resultRecords":{"resultClass":"done","results":[]}}
11-target-download
GDB -> App:
{"output":"","token":11,"outOfBandRecord":[],"resultRecords":{"resultClass":"error","results":[["msg","Error
erasing flash with vFlashErase packet"]]}}
12-interpreter-exec console "monitor reset halt"
Failed to launch GDB: Error erasing flash with vFlashErase packet (from
target-download)
~~~
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