Starting from stlink V2J15 the API
STLINK_DEBUG_APIV2_GETLASTRWSTATUS
is obsoleted and replaced by the new API
STLINK_DEBUG_APIV2_GETLASTRWSTATUS2.
Manage the two cases to be prepared for an eventual future
removal of the obsolete API.
Change-Id: Ic4498a652865b2eb6148825138c2f6855a06ba47
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4714
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Until version J14 the behaviour of ST-Link was to send a reset
pulse to the target when the debug connection is started in JTAG
mode. No reset pulse is sent, instead, in SWD mode.
Version J15 introduces a new parameter to avoid the reset pulse in
JTAG mode, aligning the behaviour with SWD.
This reset from the ST-Link, if propagated to the target, prevents
attaching a running target.
Actually this reset pulse is very short (few microsecond) and can
be easily filtered out by an on-board capacitor, usually present
on the reset wire (mainly to filter the bounces of the reset
button). Moreover, most of the use cases for ST-Link are with SWD
(not with JTAG) and this has probably further masked this JTAG
specific behaviour.
OpenOCD can tolerate it but requires the flag "connect_assert_srst"
to the command "reset_config", but the flag is not present in any
configurations in folder tcl. This enforces the guess it was not
noticed due to on-board capacitors or missing connection of reset
pin or ST-Link only used in SWD; so it's safe applying this patch.
Change the default behaviour to avoid reset in JTAG at connection.
There is no need to manage the ST-Link version here, since every
parameter that is not recognized by older ST-Link is treated as
"connect in JTAG with reset pulse", keeping backward compatibility.
Change-Id: Idc97a1457279e3970fd0839cadbff22d9b0302d4
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4713
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
The API version is hardcoded in the STLINK device and depends on
the specific firmware version. There is no way to switch between
different API. Thus, it make no sense to keep in two separate
variables the current and the max API supported because they are
always equal to "the only" API supported by the specific STLINK.
Collapse h->version.jtag_api_max and h->jtag_api in a single
variable h->version.jtag_api
Remove an extra print of api version; this is already advertised
while printing the STLINK version.
Change-Id: I0519694a34748e5a0aa330932c1256080a6d5f20
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4712
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Use an alias to STLINK_F_HAS_TRACE, both are added in the same version
Change-Id: Iabf2fdac407f5c4737c3da942323d60ee50c3470
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4708
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Tested-by: Spencer Oliver <spen@spen-soft.co.uk>
Fix the condition for ST-Link/V1; it does not support trace.
Trace is added on ST-Link/V2 and ST-Link/V2.1 only.
Change-Id: I17416edd05a2c8ece605560b7533edac4f982cfc
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4707
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
The number of stlink firmware version is growing, each carrying new
features. Today's code has several check distributed here and there
and it's already hard to track them and verify the correctness.
The introduction of STLINK-V3 will make the situation much worst,
and the code much less readable.
Add a "flags" bitmask in the struct stlink_usb_version to allow
setting individual bits for each feature available or for specific
quirks and workarounds.
This patch does not implement setting nor testing "flags"; it would
be introduced in following patches, one bit at a time.
Change-Id: I09d78202646a6c8330731f8aa96dc9d295fa5655
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4706
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
The old ST-Link/V1 can either run an obsolete firmware with API_V1 or
a more recent firmware (from V1J11 to last V1J13) with API_V2.
SWD is only provided by the latter API.
Return error is SWD is selected on adapters that does not support it.
Change-Id: Iac4ba54d191ba80fb445a7cd3d8c2621dc7a4846
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4705
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Recent stlink version V2J26 introduces support for 16 bit memory
read/write.
Add the new API and modify the wrappers stlink_usb_{read|write}_mem
For older version of stlink keep the same behavior as in current
code.
While there, fix some minor typo in comments inside the wrappers.
This fixes ticket #204 ("st-link can't flash stm32f2x based flash
without target algorithms").
Change-Id: Id7d404e588f10a4b0f8a93d7ca44cef8e4c49b4f
Author: Laurent LEMELE <laurent.lemele@st.com>
Rebased-by: Antonio Borneo <borneo.antonio@gmail.com>
Ticket: https://sourceforge.net/p/openocd/tickets/204/
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4704
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
ST-Link uses two separate API for setting the interface speed in SWD
and JTAG.
Add the missing API for JTAG and run the proper API depending on the
selected mode.
Change-Id: I71e955e23c1d82c2ea1c8bfade7612c5a0377a74
Author: Laurent LEMELE <laurent.lemele@st.com>
Rebased-by: Antonio Borneo <borneo.antonio@gmail.com>
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4703
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
New version of ST-Link/V2.1 without mass storage device.
From debug point of view, it is compatible with existing ST-Link/V2.1
It uses a new USB PID because the USB endpoints and interfaces are
different from usual ST-Link/V2.1
Add the new PID in the driver, in the tcl interface script and in the
udev configuration script.
Change-Id: Id2e1b5a5d0347c5d951a86a9cdb76be52cfd4ea3
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4702
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
This looks like some inappropriate stlink (mis-)feature and it messes
operations for writing to certain memory-mapped registers.
Discussed at https://forum.sparkfun.com/viewtopic.php?f=18&t=44949 .
Also known to be problematic for working with Kinetis parts.
Reported by robertfoss_ on IRC.
Change-Id: I8633aed13346c596000ba6c377758e1bb96db73f
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/4368
Tested-by: jenkins
Reviewed-by: Robert Foss <robert.foss@memcpy.io>
Reviewed-by: Andreas Bolsch <hyphen0break@gmail.com>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Leaving mode before closing added
Resolved a collision with JTAG API v1 error/status
checking overwriting SWIM status bytes
Change-Id: I35444ec0e6caace3e072c60085059602f4cdf0a4
Signed-off-by: Ake Rehnman <ake.rehnman@gmail.com>
Reviewed-on: http://openocd.zylin.com/4265
Tested-by: jenkins
Reviewed-by: Philipp Klaus Krause
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Fixed a bug in stlink_usb_read_mem/write_mem preventing large data transfers
The SWIM support in stlink_usb was basically non existent so I have
implemented the missing parts. The bCBWCBLength and dCBWDataTransferLength
for STLINK-V1 protocol was not correct so that was fixed. The reason for
adding SWIM support is to add STM8 support for OpenOCD.
I have tested the driver on:
STM8 discovery board with the built-in STLINK-V1
STM8 discovery board with STLINK-V2 dongle
STM32 vldiscovery board with the built-in STLINK-V1
STM32F1xxx processor with STLINK-V2 dongle
Change-Id: I4aa80a92fb0226174356adaf2f8ff949920a621f
Signed-off-by: Ake Rehnman <ake.rehnman@gmail.com>
Reviewed-on: http://openocd.zylin.com/3952
Tested-by: jenkins
Reviewed-by: Philipp Klaus Krause
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Extend HLA interface to allow multiple VID/PID pairs and use it to
autodetect the connected stlink version.
Change-Id: I35cd895b2260e23cf0e8fcb1fc11a78c2b99c69b
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/3961
Tested-by: jenkins
Reviewed-by: Karl Palsson <karlp@tweak.net.au>
Reviewed-by: Andreas Bolsch <hyphen0break@gmail.com>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Increasing the trace buffer size on the st-link itself gives openocd a greater
chance of avoiding trace data overflowing within the st-link between polls
when there is a large amount of data being sent over the trace port
The st-link appears to split the given buffer size in half
while one half is awaiting transfer over USB, the other half is being
filled by DMA transfer. If you do not poll frequently enough, the DMA
transfer will overflow back to the start of its current buffer, resulting in
corrupted output
Buffer size of 4096 bytes is the maximum allowed by the st-link v2
Change-Id: I169189b021c34f8d18de1601d78b8c5890367d68
Signed-off-by: Austin Morton <austinpmorton@gmail.com>
Reviewed-on: http://openocd.zylin.com/4085
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Also make GPL notices consistent according to:
https://www.gnu.org/licenses/gpl-howto.html
Change-Id: I84c9df40a774958a7ed91460c5d931cfab9f45ba
Signed-off-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-on: http://openocd.zylin.com/3488
Tested-by: jenkins
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
It's Cortex-Xn, not Cortex Xn or cortex xn or cortex-xn or CORTEX-Xn
or CortexXn. Further it's Cortex-M0+, not M0plus.
Cf. http://www.arm.com/products/processors/index.php
Consistently write it the official way, so that it stops propagating.
Originally spotted in the documentation, it mainly affects code comments
but also Atmel SAM3/SAM4/SAMV, NiietCM4 and SiM3x flash driver output.
Found via:
git grep -i "Cortex "
git grep -i "Cortex-" | grep -v "Cortex-" | grep -v ".cpu"
git grep -i "CortexM"
Change-Id: Ic7b6ca85253e027f6f0f751c628d1a2a391fe914
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-on: http://openocd.zylin.com/3483
Tested-by: jenkins
Reviewed-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
For STLINK_SWD_AP_FAULT git://git.ac6.fr/openocd commit 657e3e885b9ee10
returns ERROR_OK with the comment:
Change in error status when reading outside RAM.
This fix allows CDT plugin to visualize memory.
Change-Id: Id8e220961b748ef9467fd84de62b1dc84ace63f8
Signed-off-by: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>
Reviewed-on: http://openocd.zylin.com/3373
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Change-Id: I3cf5ced568319878b8bf40743e4c07718f630c68
Signed-off-by: Jim Paris <jim@jtan.com>
Reviewed-on: http://openocd.zylin.com/2953
Tested-by: jenkins
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Even though the latest firmware version for stlink-v1 supports "v2"
JTAG API, the hardware SRST handling is still broken; amend the check
accordingly.
Change-Id: I62c662cd7aa209d2d6e9fe260f5c0be81d0ce672
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/2761
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
This provides support for various trace-related subsystems in a
generic and expandable way.
Change-Id: I3a27fa7b8cfb111753088bb8c3d760dd12d1395f
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/2538
Tested-by: jenkins
Otherwise it happens if stlink can not be opened on start.
Change-Id: I7088f10e61508dae230eccfe576a51498c92f5b8
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/2550
Tested-by: jenkins
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-by: Stian Skjelstad <stian@nixia.no>
The message as it was didn't let the user know that something was wrong
with the target or wiring.
Change-Id: Ib609c2d31959e77413e61c348d0e31d7269d5c58
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/2365
Tested-by: jenkins
Reviewed-by: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>
Reviewed-by: Jens Bauer <jens@gpio.dk>
The ability to change the speed has been added to firmware versions J22 and
above. Any attempt to change on earlier versions will be ignored without error,
as the existing code does.
For supported firmware versions the driver will attempt to get as close as
possible to supported speeds (never higher).
The default stlink speed on power up is 1.8MHz.
The driver will now also print supported clocl speeds during init.
Change-Id: Iee9bd018bb8b6f94672a12538912d41c23d48a7e
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/2335
Tested-by: jenkins
The hla_serial command allows for a programming device serial number to be
specified in addition to USB VID/PID. This allows for multiple ST-LINK/V2
programmers to be attached to a single machine and operated using openocd.
Change-Id: I350654bf676eb26ba3a90450acfa55d2a5d2d791
Signed-off-by: Austin Phillips <austin_phillips@hotmail.com>
Reviewed-on: http://openocd.zylin.com/2198
Tested-by: jenkins
Reviewed-by: Martin Glunz <mg@wunderkis.de>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
- stlink_usb_get_rw_status() had a bug where FAULT or WAIT responses
in read/write operations were ignored, leading to incomplete data.
- Added wrapper stlink_cmd_allow_retry to handle
SWD_AP_WAIT/SWD_DP_WAIT statuses in most commands. These statuses
appear if an SWD read or write received a WAIT ACK response from the
target more than 4 times in a row. The driver retries the operation
(with exponential backoff) before failing outright (in testing 1
retry was always enough.)
- As part of the implementation of stlink_cmd_allow_retry a large
number of lines of boilerplate were refactored.
- Fleshed out stlink_usb_error_check and added it to some more code
paths so WAIT or FAULT responses are logged to debug. WAIT responses
will be logged even if they are subsequently retried, which should
help in case the retries have subtle side effects (none
anticipated.)
Tested with two targets: STLINK F0 Discovery, Nordic NRF51822. Only
tested with STLINK V2 programmers.
Change-Id: I9af24e8f0121b035356dbb9978d6bbf4feb2e4d3
Signed-off-by: Angus Gratton <gus@projectgus.com>
Reviewed-on: http://openocd.zylin.com/2201
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
This should allow to share common configs for both regular access and
high-level adapters.
Use the newly-added functionality in stlink and icdi drivers, amend
the configs accordingly.
Runtime-tested with a TI tm4c123g board.
Change-Id: Ibb88266a4ca25f06f6c073e916c963f017447bad
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
[gus@projectgus.com: context-specific deprecation warnings]
Signed-off-by: Angus Gratton <gus@projectgus.com>
[andrew.smirnov@gmail.com: additional nrf51.cfg mods]
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Tested-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>
Reviewed-on: http://openocd.zylin.com/1664
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
If the communication with the target was failing (either because of an
intermittent connection or the target was rebooted), this is needed to
reestablish operational state.
Reported-by: Tim Sander <tim@krieglstein.org>
Tested-by: Tim Sander <tim@krieglstein.org>
Change-Id: I91ea2e2b2b5ef8eb27dfe9bae95ef2a919f67e4e
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/2152
Tested-by: jenkins
Reviewed-by: Tim Sander <tim@krieglstein.org>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
The new version of STLink (V2-1) has a different USB endpoint layout.
As the PID of the device also changed it's possible to change EPs used
by OpenOCD in runtime. The patch adds three new fields to stlink_usb_handle_s
and assigns right EP numbers in stlink_usb_open().
Parts of the code inspired by and used with consent of Jens Hoffmann.
Change-Id: I93b69fb889f15317e9bf864905f435905db39745
Signed-off-by: Bartosz Bielawski <bartosz.bielawski@gmail.com>
Reviewed-on: http://openocd.zylin.com/2019
Tested-by: jenkins
Reviewed-by: Nemui Trinomius <nemuisan_kawausogasuki@live.jp>
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
The ST-LINK/V2 has limited internal buffering, such that trace data
can be missed if the target is generating data at a rate quicker than
the OpenOCD trace sampling. The issue of lost data is compounded since
individual TPIU packets may be split across individual STLINK_TRACE_EP
reads, and misleading results can occur if mid-packet loss occurs.
This patch increases the frequency of checking for pending trace data
with the aim of minimising such losses. Note: With the limited (I/O
and memory) bandwidth of the ST-LINK/V2 there cannot, however, be a
guarantee against trace data loss.
The timer callback is only added when enabling tracing, and is removed
when tracing is disabled.
Change-Id: Ibde9794b77793d3068f88cb5c1a26f9ceadcbd8a
Signed-off-by: James G. Smith <jsmith@ecoscentric.com>
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/1661
Tested-by: jenkins
Review and modify to conform to C99 integer types format specifiers.
Use arm-none-eabi toolchain to build successfully.
Change-Id: If855072a8f88886809309155ac6d031dcfcbc4b2
Signed-off-by: Hsiangkai Wang <hsiangkai@gmail.com>
Signed-off-by: Hsiangkai <hsiangkai@gmail.com>
Reviewed-on: http://openocd.zylin.com/1794
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Re-order the "trace" parameters to allow the raw capture (log) file to
be an optional feature. The clock frequency for calculating the "Async
Clock Prescalar" is always required when enabling trace processing and
is now the first "required" parameter.
The ST-Link driver is updated to use the (required parameter)
"trace_source_hz" non-zero value as the indicator of trace being
required, rather than the now optional output file descriptor being
non-NULL.
Background: This patch is groundwork for extending the OpenOCD SWO
capture to implement other (OpenOCD built-in) ITM/DWT processing where
the core trace support is required, but there is no requirement to
store raw trace data to a configured host file. By itself this patch
is almost a functional NOP, since without the other processing in
place there is no reason NOT to specify a capture file.
Change-Id: Ibc385dd0a7adaf9bd652bceded27262fef35fd59
Signed-off-by: James G. Smith <jsmith@ecoscentric.com>
Reviewed-on: http://openocd.zylin.com/1660
Tested-by: jenkins
Reviewed-by: Mathias Küster <kesmtp@freenet.de>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Due to issues reported when using the jtag mode of the stlink (see Trac #61),
the functionality/checking has been moved to the driver.
This change also fixes unaligned 32bit memory read/write for the stlink.
From testing this change also brings a 3KiB/s speed increase, this is due
to the larger read/write packets.
Change-Id: I8234110e7e49a683f4dadd54c442ecdc3c47b320
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1632
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
This is the first part in moving the adapter specific api back into the
driver.
The next task is to also move the hla read/write buffer size handling.
Change-Id: I86a19144b50b6de18659bfcd05b3729b2cafc051
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1621
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
It appears that on some host USB configurations(2012 MacBook Air)
multiple restarts of openocd tool cause the FW on STLINKv2 dongle to
go into a weird state in which it will no longer respond to
STLINK_GET_VERSION command. This patch adds code that, if said request
fails for the first time, attempts to reset the device and retry to
initialize it and obtain FW information one more time.
Change-Id: I7227fc972adb49d52ae700ad48ab9f66b2aaa72c
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-on: http://openocd.zylin.com/1561
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Replace 0b10 with 0x02, 0b is a GCC extension and isn't supported by
clang, for instance, so compiling on OS X will fail. No functional
changes.
Change-Id: Ie882be1563df03e7ad3da0bc9aee65a907a29549
Signed-off-by: Andrey Yurovsky <yurovsky@gmail.com>
Reviewed-on: http://openocd.zylin.com/1560
Tested-by: jenkins
Reviewed-by: Xiaofan <xiaofanc@gmail.com>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Enable reading the SWO trace output via STLinkv2 dongles that support
it.
This adds an optional initialization parameter "trace" with which the user
specifies a destination file where SWO trace output is appended as it comes in
as well as the trace module's source clock rate.
STLink will be configured for a 2MHz SWO data rate (STLink's highest
supported rate) if the source clock is > 2MHz, otherwise the source
clock is used as the data rate directly.
For example:
trace swo.log 168000000
If "trace" is specified with a usable file path, the stlink_usb driver will
attempt to configure and read SWO trace data as follows:
- on _run(), the target's TPI and TMI are configured and the STLinkv2 is told
to enable tracing. Only generic ARM TPI and TMI registers are
configured, any MCU-specific settings (ex: pin routing) are the
responsibility of the target firmware. The configuration applied is
based on the STLinkv2's capabilities (UART emulation).
- on _v2_get_status(), the trace data (if any) is fetched from the
STLink after the target status is checked and the target is found to
be running.
- on _halt(), the STLink is told to disable tracing.
When fetching trace data, the entire trace frame is written to the output file
and that data is flushed. An external tool may be used to parse the
trace data into a more human-readable format.
Tested on ARM Cortex M4F and M3 MCUs (STM32F407 and STM32L152).
Change-Id: Ic3983d46c82ba77010c23b0e18ce7b275d917f12
Signed-off-by: Andrey Yurovsky <yurovsky@gmail.com>
Reviewed-on: http://openocd.zylin.com/1524
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
