Hi all,
time to time I encounter an error reading a configuration register using
ST-Link V2.
I had to make a workaround in psoc4 driver for reading
PSOC4_SPCIF_GEOMETRY @ 0x400E0000.
Today I found that it looks like word access reads more than one word
and triggers an exception when the next word is not readable.
The problem is dependent somehow on read address. Zero in last nibble of
address or so.
Low level adapter works OK.
On Freescale KL17 there is a register SIM SOPT5 @ 0x40048010. Next word
is a gap.
See:
> mdb 0x40048010 4
0x40048010: 00 00 00 00
> mdh 0x40048010 2
0x40048010: 0000 0000
> mdw 0x40048010
0x40048010: 00000000
jtag status contains invalid mode value - communication failure
Polling target klx.cpu failed, GDB will be halted. Polling again in 100ms
Previous state query failed, trying to reconnect
Polling target klx.cpu succeeded again, trying to reexamine
klx.cpu: hardware has 2 breakpoints, 2 watchpoints
Is the problem inside ST-Link firmware or somewhere in hla_target.c:766
adapter_read_memory() ??
Tom
Open On-Chip Debugger 0.9.0-dev-00259-ge2eb0f3 (2015-01-30-16:41)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.sourceforge.net/doc/doxygen/bugs.html
Info : The selected transport took over low-level target control. The
results might differ compared to plain JTAG/SWD
Info : add flash_bank kinetis klx.flash
adapter speed: 1000 kHz
none separate
Info : add flash_bank kinetis pflash.0
Info : Unable to match requested speed 1000 kHz, using 950 kHz
Info : Unable to match requested speed 1000 kHz, using 950 kHz
Info : clock speed 950 kHz
Info : STLINK v2 JTAG v14 API v2 SWIM v0 VID 0x0483 PID 0x3748
Info : using stlink api v2
Info : Target voltage: 2.906604
Info : klx.cpu: hardware has 2 breakpoints, 2 watchpoints
Warn : Cannot check flash security status with a high-level adapter
Warn : Cannot check flash security status with a high-level adapter
target state: halted
target halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x1c0000c0 msp: 0x20000688
Info : accepting 'telnet' connection on tcp/4444
User : 51 14941 command.c:546 command_print(): debug_level: 3
Debug: 52 26207 command.c:145 script_debug(): command - ocd_command
ocd_command type ocd_mdb 0x40048010 4
Debug: 53 26207 command.c:145 script_debug(): command - mdb ocd_mdb
0x40048010 4
Debug: 55 26211 hla_target.c:766 adapter_read_memory():
adapter_read_memory 0x40048010 1 4
User : 56 26215 command.c:546 command_print(): 0x40048010: 00 00 00 00
Debug: 57 32733 command.c:145 script_debug(): command - ocd_command
ocd_command type ocd_mdh 0x40048010 2
Debug: 58 32733 command.c:145 script_debug(): command - mdh ocd_mdh
0x40048010 2
Debug: 60 32736 hla_target.c:766 adapter_read_memory():
adapter_read_memory 0x40048010 2 2
User : 61 32740 command.c:546 command_print(): 0x40048010: 0000 0000
Debug: 62 38146 command.c:145 script_debug(): command - ocd_command
ocd_command type ocd_mdw 0x40048010
Debug: 63 38147 command.c:145 script_debug(): command - mdw ocd_mdw
0x40048010
Debug: 65 38150 hla_target.c:766 adapter_read_memory():
adapter_read_memory 0x40048010 4 1
User : 66 38154 command.c:546 command_print(): 0x40048010: 00000000
Debug: 67 38259 stlink_usb.c:398 stlink_usb_error_check():
unknown/unexpected STLINK status code 0x15
Error: 68 38259 hla_target.c:462 adapter_poll(): jtag status contains
invalid mode value - communication failure
User : 69 38260 target.c:2416 handle_target(): Polling target klx.cpu
failed, GDB will be halted. Polling again in 100ms
Debug: 70 38262 target.c:1405 target_call_event_callbacks(): target
event 0 (gdb-halt)
Info : 71 38463 stlink_usb.c:942 stlink_usb_state(): Previous state
query failed, trying to reconnect
User : 72 38470 target.c:2426 handle_target(): Polling target klx.cpu
succeeded again, trying to reexamine
Debug: 73 38471 hla_target.c:766 adapter_read_memory():
adapter_read_memory 0xe000ed00 4 1
...
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