This is an automated email from the ASF dual-hosted git repository.
xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx-apps.git
The following commit(s) were added to refs/heads/master by this push:
new f270ef644 examples: add adjtime example application
f270ef644 is described below
commit f270ef644e493a4e49dbfd20a9909c51e1c1d40d
Author: Michal Lenc <[email protected]>
AuthorDate: Sat Apr 29 12:10:45 2023 +0200
examples: add adjtime example application
This application demonstrates the usage of adjtime() interface.
Signed-off-by: Michal Lenc <[email protected]>
---
examples/adjtime/Kconfig | 32 ++++++++
examples/adjtime/Make.defs | 23 ++++++
examples/adjtime/Makefile | 34 ++++++++
examples/adjtime/adjtime_main.c | 167 ++++++++++++++++++++++++++++++++++++++++
4 files changed, 256 insertions(+)
diff --git a/examples/adjtime/Kconfig b/examples/adjtime/Kconfig
new file mode 100644
index 000000000..16e4db30c
--- /dev/null
+++ b/examples/adjtime/Kconfig
@@ -0,0 +1,32 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config EXAMPLES_ADJTIME
+ tristate "Ajdtime function example"
+ default n
+ depends on CLOCK_ADJTIME
+ ---help---
+ Enable the adjtime example. This application demonstrates the
usage
+ of adjtime() interface used to synchronize system clock time if
+ its value varies from real time (usually get by external RTC).
+
+if EXAMPLES_ADJTIME
+
+config EXAMPLES_ADJTIME_PROGNAME
+ string "Program name"
+ default "adjtime"
+ ---help---
+ This is the name of the program that will be used when the NSH
ELF
+ program is installed.
+
+config EXAMPLES_ADJTIME_PRIORITY
+ int "Adjtime task priority"
+ default 100
+
+config EXAMPLES_ADJTIME_STACKSIZE
+ int "Adjtime stack size"
+ default DEFAULT_TASK_STACKSIZE
+
+endif
diff --git a/examples/adjtime/Make.defs b/examples/adjtime/Make.defs
new file mode 100644
index 000000000..f0ef399f1
--- /dev/null
+++ b/examples/adjtime/Make.defs
@@ -0,0 +1,23 @@
+############################################################################
+# apps/examples/adjtime/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_EXAMPLES_ADJTIME),)
+CONFIGURED_APPS += $(APPDIR)/examples/adjtime
+endif
diff --git a/examples/adjtime/Makefile b/examples/adjtime/Makefile
new file mode 100644
index 000000000..5e102b223
--- /dev/null
+++ b/examples/adjtime/Makefile
@@ -0,0 +1,34 @@
+############################################################################
+# apps/examples/adjtime/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+# Adjtime built-in application info
+
+PROGNAME = $(CONFIG_EXAMPLES_ADJTIME_PROGNAME)
+PRIORITY = $(CONFIG_EXAMPLES_ADJTIME_PRIORITY)
+STACKSIZE = $(CONFIG_EXAMPLES_ADJTIME_STACKSIZE)
+MODULE = $(CONFIG_EXAMPLES_ADJTIME)
+
+# Adjtime Example
+
+MAINSRC = adjtime_main.c
+
+include $(APPDIR)/Application.mk
diff --git a/examples/adjtime/adjtime_main.c b/examples/adjtime/adjtime_main.c
new file mode 100644
index 000000000..26e9a481d
--- /dev/null
+++ b/examples/adjtime/adjtime_main.c
@@ -0,0 +1,167 @@
+/****************************************************************************
+ * apps/examples/adjtime/adjtime_main.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <stdio.h>
+#include <sys/time.h>
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: pwm_help
+ ****************************************************************************/
+
+static void adjtime_help(void)
+{
+ printf("Usage: adjtime [OPTIONS]\n");
+ printf(" [-s delta->tv_sec] sets delta in seconds.\n");
+ printf(" [-u delta->tv_usec] sets delta in micro seconds.\n");
+ printf(" [-h] shows this message and exits\n");
+ printf("Both delta->tv_sec and delta->tv_usec are set to 0 by default\n");
+}
+
+/****************************************************************************
+ * Name: arg_string
+ ****************************************************************************/
+
+static int arg_string(FAR char **arg, FAR char **value)
+{
+ FAR char *ptr = *arg;
+
+ if (ptr[2] == '\0')
+ {
+ *value = arg[1];
+ return 2;
+ }
+ else
+ {
+ *value = &ptr[2];
+ return 1;
+ }
+}
+
+/****************************************************************************
+ * Name: arg_decimal
+ ****************************************************************************/
+
+static int arg_decimal(FAR char **arg, FAR unsigned long *value)
+{
+ FAR char *string;
+ int ret;
+
+ ret = arg_string(arg, &string);
+ *value = strtoul(string, NULL, 10);
+ return ret;
+}
+
+/****************************************************************************
+ * Name: parse_args
+ ****************************************************************************/
+
+static void parse_args(FAR struct timeval *delta, int argc,
+ FAR char **argv)
+{
+ FAR char *ptr;
+ unsigned long value;
+ int index;
+ int nargs;
+
+ for (index = 1; index < argc; )
+ {
+ ptr = argv[index];
+ if (ptr[0] != '-')
+ {
+ printf("Invalid options format: %s\n", ptr);
+ exit(0);
+ }
+
+ switch (ptr[1])
+ {
+ case 's':
+ nargs = arg_decimal(&argv[index], &value);
+
+ delta->tv_sec = value;
+ index += nargs;
+ break;
+
+ case 'u':
+ nargs = arg_decimal(&argv[index], &value);
+
+ delta->tv_usec = value;
+ index += nargs;
+ break;
+
+ case 'h':
+ adjtime_help();
+ exit(0);
+
+ default:
+ printf("Unsupported option: %s\n", ptr);
+ adjtime_help();
+ exit(1);
+ }
+ }
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * adjtime_main
+ ****************************************************************************/
+
+int main(int argc, FAR char *argv[])
+{
+ struct timeval delta;
+ struct timeval olddelta;
+ int ret;
+
+ /* Set delta between real time and system tick. */
+
+ delta.tv_sec = 0;
+ delta.tv_usec = 0;
+
+ parse_args(&delta, argc, argv);
+
+ printf("Delta time is %ld seconds and %ld micro seconds.\n",
+ delta.tv_sec, delta.tv_usec);
+
+ /* Call adjtime function. */
+
+ ret = adjtime(&delta, &olddelta);
+ if (ret < 0)
+ {
+ printf("ERROR: adjtime() failed: %d\n", ret);
+ }
+ else
+ {
+ printf("Returned olddelta is %ld seconds and %ld micro seconds.\n",
+ olddelta.tv_sec, olddelta.tv_usec);
+ }
+
+ return ret;
+}
