The origin for sleeping for 3ms after coming out of deep sleep
was to wait for PLL to lock so that UART would not send
garbage characters due to incorrect clock. In the deep sleep
code, it spins to wait for the PLL to lock so there is no need
to wait for 3ms in the app. So shorten it like other busy wait.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Threads are being re-used for multiple runs, so it is better to
stop the threads before reusing the variables for new threads.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Kernel timeouts have always been a 32 bit integer despite the
existence of generation macros, and existing code has been
inconsistent about using them. Upcoming commits are going to make the
timeout arguments opaque, so fix things up to be rigorously correct.
Changes include:
+ Adding a K_TIMEOUT_EQ() macro for code that needs to compare timeout
values for equality (e.g. with K_FOREVER or K_NO_WAIT).
+ Adding a k_msleep() synonym for k_sleep() which can continue to take
integral arguments as k_sleep() moves away to timeout arguments.
+ Pervasively using the K_MSEC(), K_SECONDS(), et. al. macros to
generate timeout arguments.
+ Removing the usage of K_NO_WAIT as the final argument to
K_THREAD_DEFINE(). This is just a count of milliseconds and we need
to use a zero.
This patch include no logic changes and should not affect generated
code at all.
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
Using find_package to locate Zephyr.
Old behavior was to use $ENV{ZEPHYR_BASE} for inclusion of boiler plate
code.
Whenever an automatic run of CMake happend by the build system / IDE
then it was required that ZEPHYR_BASE was defined.
Using ZEPHYR_BASE only to locate the Zephyr package allows CMake to
cache the base variable and thus allowing subsequent invocation even
if ZEPHYR_BASE is not set in the environment.
It also removes the risk of strange build results if a user switchs
between different Zephyr based project folders and forgetting to reset
ZEPHYR_BASE before running ninja / make.
Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
Sample code that demonstrates power management features on
MEC15xx-based boards.
It showcases how an app can enter into light and deep sleep.
Signed-off-by: Jose Alberto Meza <jose.a.meza.arellano@intel.com>
Daniel Leung