ms5803: initial implementation; C, C++; FTI + examples

Signed-off-by: Jon Trulson <jtrulson@ics.com>

examples/c/CMakeLists.txt

@@ -138,6 +138,7 @@ add_example (otp538u)
 add_example (button)
 add_example (button_intr)
 add_example (my9221)
+add_example (ms5803)
 
 # Custom examples
 add_custom_example (nmea_gps_i2c-example-c nmea_gps_i2c.c nmea_gps)

examples/c/ms5803.c

@@ -0,0 +1,79 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2016 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <signal.h>
+
+#include "ms5803.h"
+#include "upm_utilities.h"
+
+bool shouldRun = true;
+
+void sig_handler(int signo)
+{
+  if (signo == SIGINT)
+    shouldRun = false;
+}
+
+int main()
+{
+  signal(SIGINT, sig_handler);
+
+//! [Interesting]
+
+  // Instantiate a MS5803 on analog I2C bus 0, at the default address
+  ms5803_context sensor = ms5803_init(0, MS5803_DEFAULT_I2C_ADDR, -1);
+
+  if (!sensor)
+  {
+      printf("ms5803_init() failed\n");
+      return 1;
+  }
+
+  // Every second, sample the sensor and output the pressure and
+  // temperature
+
+  while (shouldRun)
+    {
+        if (ms5803_update(sensor))
+        {
+            printf("ms5803_update() failed\n");
+        }
+
+        printf("Temperature: %f C, Pressure = %f mbar\n",
+               ms5803_get_temperature(sensor),
+               ms5803_get_pressure(sensor));
+
+        upm_delay(1);
+    }
+
+//! [Interesting]
+
+  printf("Exiting\n");
+
+  ms5803_close(sensor);
+
+  return 0;
+}