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new 14a39ee7c examples/tmp112: Add new example for TMP112 temperature
sensor
14a39ee7c is described below
commit 14a39ee7ce11512747629ad401c6b440602b2c80
Author: Niccolò Maggioni <nicco.maggi...@gmail.com>
AuthorDate: Thu Aug 14 16:24:30 2025 +0200
examples/tmp112: Add new example for TMP112 temperature sensor
Add a new example that shows how to read the temperature from a
TMP112 sensor registered on the I2C bus.
Signed-off-by: Niccolò Maggioni <nicco.maggioni+nu...@gmail.com>
---
examples/tmp112/CMakeLists.txt | 35 +++++++++++++++++++++
examples/tmp112/Kconfig | 36 ++++++++++++++++++++++
examples/tmp112/Make.defs | 25 +++++++++++++++
examples/tmp112/Makefile | 36 ++++++++++++++++++++++
examples/tmp112/tmp112_main.c | 69 ++++++++++++++++++++++++++++++++++++++++++
5 files changed, 201 insertions(+)
diff --git a/examples/tmp112/CMakeLists.txt b/examples/tmp112/CMakeLists.txt
new file mode 100644
index 000000000..7f75995bb
--- /dev/null
+++ b/examples/tmp112/CMakeLists.txt
@@ -0,0 +1,35 @@
+#
##############################################################################
+# apps/examples/tmp112/CMakeLists.txt
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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.
+#
+#
##############################################################################
+
+if(CONFIG_EXAMPLES_TMP112)
+ nuttx_add_application(
+ NAME
+ ${CONFIG_EXAMPLES_TMP112_PROGNAME}
+ PRIORITY
+ ${CONFIG_EXAMPLES_TMP112_PRIORITY}
+ STACKSIZE
+ ${CONFIG_EXAMPLES_TMP112_STACKSIZE}
+ MODULE
+ ${CONFIG_EXAMPLES_TMP112}
+ SRCS
+ tmp112_main.c)
+endif()
diff --git a/examples/tmp112/Kconfig b/examples/tmp112/Kconfig
new file mode 100644
index 000000000..a033ab2a5
--- /dev/null
+++ b/examples/tmp112/Kconfig
@@ -0,0 +1,36 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config EXAMPLES_TMP112
+ tristate "TMP112 temperature sensor example"
+ default n
+ depends on SENSORS_TMP112
+ ---help---
+ Enable the TMP112 example
+
+if EXAMPLES_TMP112
+
+config EXAMPLES_TMP112_PROGNAME
+ string "Program name"
+ default "tmp112"
+ ---help---
+ This is the name of the program that will be used when the NSH
ELF
+ program is installed.
+
+config EXAMPLES_TMP112_PRIORITY
+ int "TMP112 task priority"
+ default 100
+
+config EXAMPLES_TMP112_STACKSIZE
+ int "TMP112 stack size"
+ default DEFAULT_TASK_STACKSIZE
+
+config EXAMPLES_TMP112_DEVPATH
+ string "TMP112 device path"
+ default "/dev/temp0"
+ ---help---
+ The default path to the TMP112 temperature sensor device
+
+endif
diff --git a/examples/tmp112/Make.defs b/examples/tmp112/Make.defs
new file mode 100644
index 000000000..097f31268
--- /dev/null
+++ b/examples/tmp112/Make.defs
@@ -0,0 +1,25 @@
+############################################################################
+# apps/examples/tmp112/Make.defs
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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_TMP112),)
+CONFIGURED_APPS += $(APPDIR)/examples/tmp112
+endif
diff --git a/examples/tmp112/Makefile b/examples/tmp112/Makefile
new file mode 100644
index 000000000..745220032
--- /dev/null
+++ b/examples/tmp112/Makefile
@@ -0,0 +1,36 @@
+############################################################################
+# apps/examples/tmp112/Makefile
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# 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
+
+# TMP112 temperature sensor example built-in application info
+
+PROGNAME = $(CONFIG_EXAMPLES_TMP112_PROGNAME)
+PRIORITY = $(CONFIG_EXAMPLES_TMP112_PRIORITY)
+STACKSIZE = $(CONFIG_EXAMPLES_TMP112_STACKSIZE)
+MODULE = $(CONFIG_EXAMPLES_TMP112)
+
+# TMP112 temperature sensor example
+
+MAINSRC = tmp112_main.c
+
+include $(APPDIR)/Application.mk
diff --git a/examples/tmp112/tmp112_main.c b/examples/tmp112/tmp112_main.c
new file mode 100644
index 000000000..0fbf6f0f9
--- /dev/null
+++ b/examples/tmp112/tmp112_main.c
@@ -0,0 +1,69 @@
+/****************************************************************************
+ * apps/examples/tmp112/tmp112_main.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 <fcntl.h>
+#include <unistd.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: tmp112_main
+ ****************************************************************************/
+
+int main(int argc, FAR char *argv[])
+{
+ int fd;
+ int ret;
+ float sample;
+
+ fd = open(CONFIG_EXAMPLES_TMP112_DEVPATH, O_RDONLY);
+ if (fd < 0)
+ {
+ printf("Failed to open TMP112 sensor at %s: %s (%d)\n",
+ CONFIG_EXAMPLES_TMP112_DEVPATH, strerror(errno), errno);
+ return EXIT_FAILURE;
+ }
+
+ ret = read(fd, &sample, sizeof(float));
+ if (ret != sizeof(sample))
+ {
+ perror("Could not read");
+ ret = EXIT_FAILURE;
+ }
+ else
+ {
+ printf("TMP112 = %.03f degrees Celsius\n", sample);
+ ret = EXIT_SUCCESS;
+ }
+
+ close(fd);
+
+ return ret;
+}
