>>>>> "Andreas" == Andreas Fritiofson <[email protected]> writes:
Andreas> On Thu, Apr 9, 2015 at 3:50 PM, Uwe Bonnes <
Andreas> [email protected]> wrote:
Andreas> ... Uwe> Why isn't the mww broken down as two mwb?
Andreas> Digging deeper, both mwh and mwb returned a Verify error,
Andreas> as PLLON set PLLRDY and readback got 0x3(PLLRDY|PLLON) versus
Andreas> 0x1 (PLLON) written.
Andreas> WTF is the STLink doing here? Why readback a write?? Is the
Andreas> firmware or our driver the culprit?
At first, it is clearly the firmware. The reply sent a JTAG Status code
#define STLINK_JTAG_WRITE_VERIF_ERROR 0x0D
Otherwise OpenOCD doesn't know of this error and so perhaps reacts
inadequat. Maybe openocd should simply treat STLINK_JTAG_WRITE_VERIF_ERROR
as success.
I downgraded the firmware on a F4 Discovery to something really old and still
the error happens:
...
Info : 253 4 stlink_usb.c:515 stlink_usb_version(): STLINK v2 JTAG v21 API v2
SWIM v0 VID 0x0483 PID 0x3748
...
Debug: 728 4942 hla_target.c:766 adapter_write_memory(): adapter_write_memory
0x40023808 1 1
Debug: 729 4943 stlink_usb.c:394 stlink_usb_error_check(): unknown/unexpected
STLINK status code 0xd
Debug: 730 4943 command.c:628 run_command(): Command failed with error code -4
User : 731 4943 command.c:546 command_print(): in procedure 'reset'
in procedure 'ocd_bouncer'
in procedure 'ocd_process_reset'
in procedure 'ocd_process_reset_inner' called at file "embedded:startup.tcl",
line 246
in procedure 'stm32f4x.cpu' called at file "embedded:startup.tcl", line 368
in procedure 'ocd_bouncer'
in procedure 'mwb'
Bye
--
Uwe Bonnes [email protected]
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
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