mirror of
https://github.com/zephyrproject-rtos/zephyr
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407b49b35c
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>
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|---|---|---|
| .. | ||
| src | ||
| CMakeLists.txt | ||
| Kconfig | ||
| prj_mec15xxevb_assy6853.conf | ||
| prj_mec1501modular_assy6885.conf | ||
| prj.conf | ||
| README.rst | ||
| sample.yaml | ||
.. espi-sample:
Enhanced Serial Peripheral Interface
####################################
Overview
********
This sample demonstrates how to use the Enhanced Serial Peripheral Interface
(eSPI) API.
It shows how to configure and select eSPI controller capabilities as part of
a simple eSPI handshake that includes exchanging virtual wire packets.
Standard platform signals are sent virtual wire packets over the bus.
Callbacks are registered that will write to the console indicating main
eSPI events and when a virtual wire is received.
Building and Running
********************
The sample can be built and executed on boards supporting eSPI.
Any pins required for minimum eSPI handshake should be configured.
Sample output
=============
.. code-block:: console
Hello eSPI test!
eSPI test - I/O initialization...complete
eSPI slave configured successfully!
eSPI test - callbacks initialization... complete
eSPI test - callbacks registration... complete
eSPI test - Power initialization...complete
eSPI test - Handshake
eSPI BUS reset 0
VW channel is ready
PLT_RST changed 1
1st phase completed
2nd phase completed
3rd phase completed
note:: The values shown above might differ.