Hi all,
I'm attempting to get Zephyr working on the M4 core of an STM32H755. I'm using
an ST-Link v3set on Windows 11 with OpenOCD v. 0.12.0.
I am able to flash a compiled binary via OpenOCD, but I have so far been unable
to get to a place where I can debug the second core. I started based on the
example OpenOCD configs for the STM32H745 and H747 and attempted to build a
configuration file (see below). I've also included my OpenOCD invocation and a
clip from my logs. Has anyone been able to debug the M4 core (CPU1) on a
dual-core STM32H7?
source [find interface/stlink-dap.cfg]
transport select "dapdirect_swd"
set DUAL_CORE 1
source [find target/stm32h7x_dual_bank.cfg]
targets stm32h7x.cpu1
# Use connect_assert_srst here to be able to program
# even when core is in sleep mode
reset_config srst_only srst_nogate connect_assert_srst
$_CHIPNAME.cpu0 configure -event gdb-attach {
echo "Debugger attaching: halting execution"
gdb_breakpoint_override hard
}
$_CHIPNAME.cpu1 configure -event gdb-attach {
echo "Debugger attaching: halting execution"
gdb_breakpoint_override hard
}
$_CHIPNAME.cpu0 configure -event gdb-detach {
echo "Debugger detaching: resuming execution"
resume
}
$_CHIPNAME.cpu1 configure -event gdb-detach {
echo "Debugger detaching: resuming execution"
resume
}
# Due to the use of connect_assert_srst, running gdb requires
# to reset halt just after openocd init.
rename init old_init
proc init {} {
old_init
reset halt
}
I then invoke OpenOCD with: -s ${project_loc}\..\boards\arm\stm32h755\support
-f openocd.cfg -d
The end of my logs look like:
Debug: 523 827 cortex_m.c:589 cortex_m_endreset_event(): [stm32h7x.cpu0]
DCB_DEMCR = 0x01000501
Debug: 524 827 stlink_usb.c:4338 stlink_usb_misc_rw_segment(): Queue: 2
commands in 4 items
Debug: 525 828 target.c:2720 target_write_u32(): address: 0xe0002000, value:
0x00000003
Debug: 526 828 stlink_usb.c:4338 stlink_usb_misc_rw_segment(): Queue: 2
commands in 5 items
Debug: 527 832 target.c:2632 target_read_u32(): address: 0xe0002000, value:
0x10000081
Debug: 528 832 target.c:2720 target_write_u32(): address: 0xe0002008, value:
0x00000000
Debug: 529 833 target.c:2720 target_write_u32(): address: 0xe000200c, value:
0x00000000
Debug: 530 834 target.c:2720 target_write_u32(): address: 0xe0002010, value:
0x00000000
Debug: 531 837 target.c:2720 target_write_u32(): address: 0xe0002014, value:
0x00000000
Debug: 532 837 target.c:2720 target_write_u32(): address: 0xe0002018, value:
0x00000000
Debug: 533 838 target.c:2720 target_write_u32(): address: 0xe000201c, value:
0x00000000
Debug: 534 839 target.c:2720 target_write_u32(): address: 0xe0002020, value:
0x00000000
Debug: 535 840 target.c:2720 target_write_u32(): address: 0xe0002024, value:
0x00000000
Debug: 536 841 target.c:2720 target_write_u32(): address: 0xe0001020, value:
0x00000000
Debug: 537 842 target.c:2720 target_write_u32(): address: 0xe0001024, value:
0x00000000
Debug: 538 845 target.c:2720 target_write_u32(): address: 0xe0001028, value:
0x00000000
Debug: 539 846 target.c:2720 target_write_u32(): address: 0xe0001030, value:
0x00000000
Debug: 540 846 target.c:2720 target_write_u32(): address: 0xe0001034, value:
0x00000000
Debug: 541 848 target.c:2720 target_write_u32(): address: 0xe0001038, value:
0x00000000
Debug: 542 850 target.c:2720 target_write_u32(): address: 0xe0001040, value:
0x00000000
Debug: 543 853 target.c:2720 target_write_u32(): address: 0xe0001044, value:
0x00000000
Debug: 544 856 target.c:2720 target_write_u32(): address: 0xe0001048, value:
0x00000000
Debug: 545 857 target.c:2720 target_write_u32(): address: 0xe0001050, value:
0x00000000
Debug: 546 859 target.c:2720 target_write_u32(): address: 0xe0001054, value:
0x00000000
Debug: 547 859 target.c:2720 target_write_u32(): address: 0xe0001058, value:
0x00000000
Debug: 548 863 target.c:3290 target_wait_state(): waiting for target halted...
Error: 549 1864 target.c:3298 target_wait_state(): timed out while waiting for
target halted
Debug: 550 1864 command.c:155 script_debug(): command - stm32h7x.cpu0 curstate
Debug: 551 1865 command.c:544 run_command(): Command 'reset' failed with error
code -4
User : 552 1865 command.c:608 command_run_line(): TARGET: stm32h7x.cpu0 - Not
halted
in procedure 'init'
Debug: 553 1865 mem_ap.c:71 mem_ap_deinit_target(): mem_ap_deinit_target
Debug: 554 1865 arm_adi_v5.c:1120 dap_put_ap(): refcount AP#0x2 put 0
Debug: 555 1865 target.c:2203 target_free_all_working_areas_restore(): freeing
all working areas
Debug: 556 1865 arm_adi_v5.c:1120 dap_put_ap(): refcount AP#0x0 put 0
Debug: 557 1865 target.c:2203 target_free_all_working_areas_restore(): freeing
all working areas
Debug: 558 1866 arm_adi_v5.c:1120 dap_put_ap(): refcount AP#0x3 put 0
Debug: 559 1866 target.c:2203 target_free_all_working_areas_restore(): freeing
all working areas
Debug: 560 1867 stlink_usb.c:5116 stlink_dap_quit(): stlink_dap_quit()
Debug: 561 1868 stlink_usb.c:1659 stlink_usb_exit_mode(): MODE: 0x02
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