samples: lwm2m_client: Add shell commands for testing

Add shell commands for testing functionality that
would trigger on a button press.

uart:~$ app
app - LwM2M client application commands
Subcommands:
  gnss  : Trigger GNSS search
  gfix  : Trigger Ground Fix location request

Signed-off-by: Seppo Takalo <[email protected]>

samples/cellular/lwm2m_client/CMakeLists.txt

@@ -12,6 +12,7 @@ zephyr_compile_definitions(PROJECT_NAME=${PROJECT_NAME})
 
 # NORDIC SDK APP START
 target_sources(app PRIVATE src/main.c)
+target_sources_ifdef(CONFIG_SHELL app PRIVATE src/shell.c)
 zephyr_include_directories(src)
 # NORDIC SDK APP END
 

samples/cellular/lwm2m_client/src/shell.c

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2024 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+#include <zephyr/shell/shell.h>
+#include <net/lwm2m_client_utils_location.h>
+#include "location_events.h"
+#include "gnss_module.h"
+
+#define HELP_CMD  "LwM2M client application commands"
+#define HELP_GNSS "Trigger GNSS search"
+#define HELP_GFIX "Trigger Ground Fix location request"
+
+static int cmd_gnss(const struct shell *sh, size_t argc, char **argv)
+{
+#if defined(CONFIG_LWM2M_CLIENT_UTILS_LOCATION_ASSIST_AGNSS) ||                                    \
+	defined(CONFIG_LWM2M_CLIENT_UTILS_LOCATION_ASSIST_PGPS)
+	shell_print(sh, "Starting GNSS\n");
+	start_gnss();
+	return 0;
+#else
+	shell_print(sh, "A-GNSS not enabled\n");
+	return -ENOEXEC;
+#endif
+}
+
+static int cmd_gfix(const struct shell *sh, size_t argc, char **argv)
+{
+#if defined(CONFIG_LWM2M_CLIENT_UTILS_GROUND_FIX_OBJ_SUPPORT)
+	shell_print(sh, "Send cell location request event\n");
+	struct ground_fix_location_request_event *ground_fix_event =
+		new_ground_fix_location_request_event();
+
+	APP_EVENT_SUBMIT(ground_fix_event);
+	return 0;
+#else
+	shell_print(sh, "Ground Fix not enabled\n");
+	return -ENOEXEC;
+#endif
+}
+
+SHELL_STATIC_SUBCMD_SET_CREATE(sub_app,
+			       SHELL_COND_CMD_ARG(CONFIG_LWM2M_CLIENT_UTILS_LOCATION_ASSISTANCE,
+						  gnss, NULL, HELP_GNSS, cmd_gnss, 1, 0),
+			       SHELL_COND_CMD_ARG(CONFIG_LWM2M_CLIENT_UTILS_GROUND_FIX_OBJ_SUPPORT,
+						  gfix, NULL, HELP_GFIX, cmd_gfix, 1, 0),
+			       SHELL_SUBCMD_SET_END);
+SHELL_CMD_ARG_REGISTER(app, &sub_app, HELP_CMD, NULL, 1, 0);