Zephyr cleanup (fix date-time.c, cleanout device.c, use full C lib) (#124)

Co-authored-by: Gregory Shue <gregory.shue@legrand.us>

zephyr/CMakeLists.txt

@@ -394,11 +394,7 @@ set(BACNETSTACK_PORT ${CMAKE_CURRENT_LIST_DIR}/../ports/zephyr)
 
 list(
   APPEND BACNETSTACK_SRCS
-      $<IF:$<BOOL:${CONFIG_NATIVE_APPLICATION}>,
-          ${BACNETSTACK_BASIC_SRCS}
-        ,#else
-          ${BACNETSTACK_PORT}/device.c
-        >
+      ${BACNETSTACK_BASIC_SRCS}
       ${BACNETSTACK_PORT}/datetime-init.c
       $<$<BOOL:${CONFIG_BACDL_BIP}>:${BACNETSTACK_PORT}/bip-init.c>
       $<$<BOOL:${CONFIG_BACDL_BIP6}>:${BACNETSTACK_PORT}/bip6-init.c>

zephyr/Kconfig

@@ -5,6 +5,7 @@
 
 menuconfig BACNETSTACK
 	bool "BACnet-Stack Support"
+	select REQUIRES_FULL_LIBC
 	help
 	  This option enables the BACnet-Stack BACnet library.
 

zephyr/tests/bacnet/device/CMakeLists.txt

@@ -1,25 +0,0 @@
-# SPDX-License-Identifier: MIT
-
-cmake_minimum_required(VERSION 3.13.1)
-
-# Extract module path and names
-string(REGEX REPLACE
-  "/zephyr/tests/[a-zA-Z_/-]*$" ""
-  BACNET_BASE
-  ${CMAKE_CURRENT_SOURCE_DIR})
-string(REGEX REPLACE
-  "/zephyr/tests/" "/test/"
-  BACNET_TEST_PATH
-  ${CMAKE_CURRENT_SOURCE_DIR})
-get_filename_component(BACNET_NAME ${BACNET_BASE} NAME)
-
-# Update include path for this module
-list(APPEND BACNET_INCLUDE ${BACNET_BASE}/src)
-
-include($ENV{ZEPHYR_BASE}/cmake/app/boilerplate.cmake NO_POLICY_SCOPE)
-project(${BACNET_NAME})
-
-target_include_directories(app PRIVATE ${BACNET_INCLUDE})
-target_sources(app PRIVATE
-  ${BACNET_TEST_PATH}/src/main.c
-  )

zephyr/tests/bacnet/device/prj.conf

@@ -1,11 +0,0 @@
-CONFIG_ZTEST=y
-CONFIG_BACNETSTACK=y
-
-CONFIG_NETWORKING=y
-CONFIG_NET_IPV4=y
-CONFIG_NET_IPV6=y
-CONFIG_NET_ARP=y
-CONFIG_NET_TCP=y
-CONFIG_NET_UDP=y
-
-CONFIG_NEWLIB_LIBC=y

zephyr/tests/bacnet/device/testcase.yaml

@@ -1,3 +0,0 @@
-tests:
-  bacnet.device:
-    tags: bacnet