examples/bmp180: Add BMP180 application example

examples/bmp180/.gitignore

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+/Make.dep
+/.depend
+/.built
+/*.asm
+/*.obj
+/*.rel
+/*.lst
+/*.sym
+/*.adb
+/*.lib
+/*.src

examples/bmp180/Kconfig

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+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config EXAMPLES_BMP180
+	bool "BMP180 Barometer sensor example"
+	default n
+	depends on SENSORS_BMP180
+	---help---
+		Enable the BMP180 example
+
+if EXAMPLES_BMP180
+
+config EXAMPLES_BMP180_PROGNAME
+	string "Program name"
+	default "bmp180"
+	depends on BUILD_KERNEL
+	---help---
+		This is the name of the program that will be use when the NSH ELF
+		program is installed.
+
+config EXAMPLES_BMP180_PRIORITY
+	int "BMP180 task priority"
+	default 100
+
+config EXAMPLES_BMP180_STACKSIZE
+	int "BMP180 stack size"
+	default 2048
+
+endif

examples/bmp180/Make.defs

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+############################################################################
+# apps/examples/bmp180/Make.defs
+# Adds selected applications to apps/ build
+#
+#   Copyright (C) 2018 Alan Carvalho de Assis. All rights reserved.
+#   Author: Alan Carvalho de Assis <acassis@gmail.com>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+ifeq ($(CONFIG_EXAMPLES_BMP180),y)
+CONFIGURED_APPS += examples/bmp180
+endif

examples/bmp180/Makefile

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+############################################################################
+# apps/examples/bmp180/Makefile
+#
+#   Copyright (C) 2018 Alan Carvalho de Assis. All rights reserved.
+#   Author: Alan Carvalho de Assis <acassis@gmail.com>
+#   Copyright (C) 2008, 2010-2013, 2017 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+-include $(TOPDIR)/Make.defs
+
+# BMP180 Barometer sensor example built-in application info
+
+CONFIG_EXAMPLES_BMP180_PRIORITY ?= SCHED_PRIORITY_DEFAULT
+CONFIG_EXAMPLES_BMP180_STACKSIZE ?= 2048
+
+APPNAME = bmp180
+PRIORITY = $(CONFIG_EXAMPLES_BMP180_PRIORITY)
+STACKSIZE = $(CONFIG_EXAMPLES_BMP180_STACKSIZE)
+
+# BMP180 Barometer sensor example
+
+ASRCS =
+CSRCS =
+MAINSRC = bmp180_main.c
+
+CONFIG_EXAMPLES_BMP180_PROGNAME ?= bmp180$(EXEEXT)
+PROGNAME = $(CONFIG_EXAMPLES_BMP180_PROGNAME)
+
+include $(APPDIR)/Application.mk

examples/bmp180/bmp180_main.c

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+/****************************************************************************
+ * examples/bmp180/bmp180_main.c
+ *
+ *   Copyright (C) 2017 Sebastien Lorquet. All rights reserved.
+ *   Author: Sebastien Lorquet <sebastien@lorquet.fr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * bmp180_main
+ ****************************************************************************/
+
+#ifdef CONFIG_BUILD_KERNEL
+int main(int argc, FAR char *argv[])
+#else
+int bmp180_main(int argc, char *argv[])
+#endif
+{
+  int fd;
+  int ret;
+  uint32_t sample;
+
+  fd = open("/dev/press0", O_RDWR);
+  while (1)
+    {
+      ret = read(fd, &sample, sizeof(uint32_t));
+      if (ret != sizeof(sample))
+        {
+          break;
+        }
+
+      printf("Pressure value = %05d\n", sample);
+
+      usleep(500000);
+    }
+
+  close(fd);
+  return 0;
+}