samples: Add modem shell sample.

doc/nrf/links.txt

@@ -263,6 +263,8 @@
 
 .. _`System Protection Unit`: https://infocenter.nordicsemi.com/topic/ps_nrf9160/spu.html
 
+.. _`nRF9160 Hardware Verification Guidelines - UART interface`: https://infocenter.nordicsemi.com/topic/nwp_034/WP/nwp_034/nwp_034_uart_if.html
+
 .. ### Source: devzone.nordicsemi.com
 
 .. _`DevZone`: https://devzone.nordicsemi.com/

ext/CMakeLists.txt

@@ -5,6 +5,9 @@
 #
 
 add_subdirectory_ifdef(CONFIG_CJSON_LIB cjson)
+add_subdirectory_ifdef(CONFIG_GETOPT_LIB freebsd-getopt)
+add_subdirectory_ifdef(CONFIG_NRF_IPERF3 iperf3)
+add_subdirectory_ifdef(CONFIG_NRF_CURL curl)
 
 if(CONFIG_SUPL_CLIENT_LIB)
   if (NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/lib/bin/supl)

ext/Kconfig

@@ -7,5 +7,8 @@
 menu "External libraries"
 
 rsource "cjson/Kconfig"
+rsource "freebsd-getopt/Kconfig"
+rsource "iperf3/Kconfig"
+rsource "curl/Kconfig"
 
 endmenu

ext/curl/CMakeLists.txt

@@ -0,0 +1,18 @@
+#
+# Copyright (c) 2020 Nordic Semiconductor
+#
+# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+#
+
+zephyr_interface_library_named(curl)
+
+target_include_directories(curl INTERFACE include/curl)
+
+zephyr_library()
+zephyr_library_include_directories(lib)
+
+zephyr_library_link_libraries(posix_subsys)
+zephyr_library_link_libraries(curl)
+
+add_subdirectory_ifdef(CONFIG_NRF_CURL_LIB lib)
+add_subdirectory_ifdef(CONFIG_NRF_CURL_TOOL tool)

ext/curl/Kconfig

@@ -0,0 +1,49 @@
+#
+# Copyright (c) 2021 Nordic Semiconductor
+#
+# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+#
+
+# Enables client to have NRF_CURL in synchronization with client's own flag.
+config NRF_CURL_PROMPTLESS
+	bool
+
+config NRF_CURL
+	bool "Curl" if !NRF_CURL_PROMPTLESS
+	depends on POSIX_API && !PTHREAD_IPC && !NET_SOCKETS_POSIX_NAMES && NEWLIB_LIBC
+	imply NEWLIB_LIBC_FLOAT_PRINTF
+	help
+	  Curl support for NRF.
+
+if NRF_CURL
+menu "NRF CURL selections"
+
+#invisible configs:
+config NRF_CURL_LIB
+	bool
+	default y
+
+config NRF_CURL_TOOL
+	bool
+	default y
+
+config NRF_CURL_INTEGRATION
+	bool "Curl changes for NRF"
+	default y
+	help
+	  Compile cURL for nRF Connect SDK integration.
+	  This setting will enable nRF Connect SDK specific changes in the cURL library.
+	  If cURL is planned to be used in nRF Connect SDK context then this setting
+	  must be enabled.
+
+# The name of this option is mandated by zephyr_interface_library_named cmake directive.
+config APP_LINK_WITH_CURL
+	bool "Link 'app' with CURL"
+	default y
+	help
+	  Add CURL header files to the 'app' include path. It may be
+	  disabled if the include paths for CURL are causing aliasing
+	  issues for 'app'.
+
+endmenu #NRF_CURL
+endif #NRF_CURL

ext/curl/include/Makefile.am

@@ -0,0 +1,26 @@
+#***************************************************************************
+#                                  _   _ ____  _
+#  Project                     ___| | | |  _ \| |
+#                             / __| | | | |_) | |
+#                            | (__| |_| |  _ <| |___
+#                             \___|\___/|_| \_\_____|
+#
+# Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at https://curl.haxx.se/docs/copyright.html.
+#
+# You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# copies of the Software, and permit persons to whom the Software is
+# furnished to do so, under the terms of the COPYING file.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+###########################################################################
+SUBDIRS = curl
+
+EXTRA_DIST = README.md
+
+AUTOMAKE_OPTIONS = foreign no-dependencies

ext/curl/include/README.md

@@ -0,0 +1,14 @@
+# include
+
+Public include files for libcurl, external users.
+
+They're all placed in the curl subdirectory here for better fit in any kind of
+environment. You must include files from here using...
+
+    #include "curl.h"
+
+... style and point the compiler's include path to the directory holding the
+curl subdirectory. It makes it more likely to survive future modifications.
+
+The public curl include files can be shared freely between different platforms
+and different architectures.

ext/curl/include/curl/.gitignore

@@ -0,0 +1,3 @@
+curlver.h.dist
+stamp-h2
+stamp-h3

ext/curl/include/curl/Makefile.am

@@ -0,0 +1,39 @@
+#***************************************************************************
+#                                  _   _ ____  _
+#  Project                     ___| | | |  _ \| |
+#                             / __| | | | |_) | |
+#                            | (__| |_| |  _ <| |___
+#                             \___|\___/|_| \_\_____|
+#
+# Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at https://curl.haxx.se/docs/copyright.html.
+#
+# You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# copies of the Software, and permit persons to whom the Software is
+# furnished to do so, under the terms of the COPYING file.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+###########################################################################
+pkginclude_HEADERS = \
+  curl.h curlver.h easy.h mprintf.h stdcheaders.h multi.h \
+  typecheck-gcc.h system.h urlapi.h options.h
+
+pkgincludedir= $(includedir)/curl
+
+CHECKSRC = $(CS_$(V))
+CS_0 = @echo "  RUN     " $@;
+CS_1 =
+CS_ = $(CS_0)
+
+checksrc:
+	$(CHECKSRC)@PERL@ $(top_srcdir)/lib/checksrc.pl -D$(top_srcdir)/include/curl $(pkginclude_HEADERS)
+
+if CURLDEBUG
+# for debug builds, we scan the sources on all regular make invokes
+all-local: checksrc
+endif