ll: New timer organization. LL now uses 2 generic timers (1 repeated and 1 single shot) for the different LL states
ll: consistency of LL state names
ll: Implementation of passive scanning
examples: Add LL Scanner example
ll: Fix formatting
examples/ll-scanner: Fix formatting
Allow custom specification of the toolchain path

Signed-off-by: Petr Štetiar <ynezz@true.cz>
Fix Makefile.config include path in example's Makefile

Signed-off-by: Petr Štetiar <ynezz@true.cz>
Allow specification of the path to JlinkExe

This needs updated version of nrftool which add --jlinkexe option.

Signed-off-by: Petr Štetiar <ynezz@true.cz>
Allow specification of the programmer command

This change should allow easy change to for example 'nrftool --verbose' in my
custom Makefile.config.

Signed-off-by: Petr Štetiar <ynezz@true.cz>
examples/radio-observer: Remove duplicate timer initialization
ll: Modify timing parameters to uint32_t
bci: Modify timing parameters to uint32_t
timer: Change timer_start() API from ms to us

In several places we need to have timers with microsecond resolution.
This patch modifies the timer_start() API to accept us, adds helper
macros TIMER_MILLIS() and TIMER_SECONDS(), and updates all examples.
ll: Enforce advertise interval to be multiple of 0.625 ms
ll: Rename pdu_type to type

This patch removes redundant prefix in the advertising type field.
ll: Add scannable advertising

This patch adds support for scannable advertising, sending SCAN_RSP if
SCAN_REQ PDU is received. SCAN_REQ PDUs can be sent by the remote if the
advertiser is sending ADV_IND or ADV_SCAN_IND.
example: Add setting scan response data

This patch changes the ll-broadcaster example to send scannable
advertising PDU, and reply device appearance in the scan response
PDU.
nrf51822/log: Parametrize buffer length
examples: Rename example to radio-passive-observer