Simplest Zephyr module + bacnet_stack config and hello sample

zephyr/samples/hello_bacnet_stack/CMakeLists.txt

@@ -0,0 +1,25 @@
+# SPDX-License-Identifier: MIT
+
+cmake_minimum_required(VERSION 3.13.1)
+
+get_filename_component(MY_PROJECT_BASENAME ${CMAKE_CURRENT_SOURCE_DIR} NAME)
+
+# Find the directory of the Zephyr module
+string(REGEX REPLACE 
+    "\/zephyr\/samples\/[a-zA-Z_\-]*${MY_PROJECT_BASENAME}$" ""
+    MY_ZEPHYR_MODULE_SOURCE_DIR
+    ${CMAKE_CURRENT_SOURCE_DIR})
+
+list(APPEND ZEPHYR_EXTRA_MODULES
+    ${MY_ZEPHYR_MODULE_SOURCE_DIR}
+  )
+
+# Add an absolute directory path to the CMake variable
+# SYSCALL_INCLUDE_DIRS. This ensures that the syscall machinery will
+# be able to find the module's syscalls.
+#TODO: list(APPEND SYSCALL_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR})
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(${MY_PROJECT_BASENAME})
+
+target_sources(app PRIVATE src/main.c)

zephyr/samples/hello_bacnet_stack/README.rst

@@ -0,0 +1,33 @@
+.. _hello_bacnet_stack:
+
+Hello BACnet-Stack
+##################
+
+Overview
+********
+
+A simple sample that can be used with any :ref:`supported board <boards>` and
+prints "Hello BACnet-Stack" to the console.
+
+Building and Running
+********************
+
+This application can be built and executed on QEMU as follows:
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_bacnet_stack
+   :host-os: unix
+   :board: qemu_x86
+   :goals: run
+   :compact:
+
+To build for another board, change "qemu_x86" above to that board's name.
+
+Sample Output
+=============
+
+.. code-block:: console
+
+    Hello BACnet-Stack! x86
+
+Exit QEMU by pressing :kbd:`CTRL+A` :kbd:`x`.

zephyr/samples/hello_bacnet_stack/prj.conf

@@ -0,0 +1,2 @@
+# nothing here
+CONFIG_BACNETSTACK=y

zephyr/samples/hello_bacnet_stack/sample.yaml

@@ -0,0 +1,15 @@
+sample:
+  description: Hello BACnet-Stack sample, the simplest BACnet-Stack
+    application
+  name: hello BACnet-Stack
+common:
+    tags: introduction
+    harness: console
+    harness_config:
+      type: one_line
+      regex:
+        - "Hello BACnet-Stack! (.*)"
+tests:
+  sample.basic.hello_bacnet_stack:
+    platform_whitelist: native_posix
+    tags: introduction

zephyr/samples/hello_bacnet_stack/src/main.c

@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) 2020 Legrand North America, LLC.
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <zephyr.h>
+#include <sys/printk.h>
+
+void main(void)
+{
+    printk("Hello BACnet-Stack! %s\n", CONFIG_BOARD);
+}