Michael,
If srst wiring of your LPC812 board is correct, there might be another
reason that srst
is not pulsed: OpenOCD checks if target was examined and if not reset is
not issued
(this is IMHO wrong)
Please try http://openocd.zylin.com/2606
More serious problem is DP access failure.
As included lpc1xxx.cfg uses "adapter_nsrst_delay 200" try
http://openocd.zylin.com/2591
Also try http://openocd.zylin.com/2601
Please report results.
Tomas
On 25.3.2015 23:26, Michael Schwingen wrote:
On 22.03.2015 23:36, Michael Schwingen wrote:
(re-sending from correct account)
Hi,
I started working with an LPC812. Using a ST-Link V2 as SWD interface,
this seems to work, but I can't get reset working - it seems the reset
output is always active, so I decided to pull out my bus blaster.
I flashed the KT-Link CPLD configuration into the busblaster. It seems
to work fine in JTAG mode when connecting to an IXP425. However, when
connecting the LPC812, I get errors when starting OpenOCD (see attached
log).
This is with current git master (pulled yesterday).
Any hints where to look? Is FT2232+KTLINK or the LPC812 considered stable?
Some updates, after new hardware arrived on my table: I got a shiny
(extruded aluminum case) chinese ST-Link V2 clone, which I upgraded to
current firmware using the ST's STLink Utility. Also two STM32F103
target boards as a non-nucleo reference (the ST-Link V2 i used in my
original post was actually from a nucleo board, so probably V2.1).
The results are:
- Busblaster/KTLink works fine with a STM32F103 target, both with
"reset_config none" and with "reset_config srst_only". When selecting
srst_only, I can see a low-pulse on the reset line.
- The STLink V2 works just as well with a STM32F103 target, with both
reset configs, I see a low-pulse on reset when using that config.
- The STLINK works with the LPC812 with "reset_config none".
- The STLINK does not work with the LPC812 with "reset_config
srst_only", *no* reset pulse can be seen (reset line stays high =
inactive all the time), and OpenOCD complains that the target is not halted.
- Busblaster/KTLink does not work at all with the LPC812. Even when
selecting "reset_config srst_only", there is *no* reset pulse, the reset
line stays high all the time.
I have made new logs of the Busblaster/KTLink case - it looks the same
with both reset_configs, so I will attach only one.
cu
Michael
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