Black Magic Probe supports a "monitor connect_srst" command [1] to
configure whether to assert reset when connecting to the target. This is
useful to reprogram a target that may be idling in a low power state,
with an otherwise unresponsive debug core.
Adding a --connect-srst runner option for enabling this for "flash" and
"debug" operations to ensure that programming works in that case, but
also explicitly disabling it for "attach", to allow attaching to a
running target without changing its state.
Not turning this on by default since apparently some MCUs disable the
SWD interface while in reset.
[1] https://github.com/blacksphere/blackmagic/wiki/Useful-GDB-commands
Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com>
Add self.require() checks before running commands. Increase test
coverage, including for this feature, while we are here.
Signed-off-by: Marti Bolivar <marti.bolivar@nordicsemi.no>
