Merged in paulpatience/nuttx (pull request #17)

Added MS5805 altimeter.

drivers/sensors/Kconfig

@@ -31,6 +31,13 @@ config MB7040
 	---help---
 		Enable driver support for the MaxBotix MB7040 sonar.
 
+config MS5805
+	bool "MEAS MS5805 Altimeter support"
+	default n
+	select I2C
+	---help---
+		Enable driver support for the MEAS MS5805 altimeter.
+
 config MPL115A
 	bool "Freescale MPL115A Barometer Sensor support"
 	default n

drivers/sensors/Make.defs

@@ -73,6 +73,10 @@ ifeq ($(CONFIG_MB7040),y)
   CSRCS += mb7040.c
 endif
 
+ifeq ($(CONFIG_MS5805),y)
+  CSRCS += ms5805.c
+endif
+
 endif # CONFIG_I2C
 
 # These drivers depend on SPI support

include/nuttx/sensors/ms5805.h

@@ -0,0 +1,111 @@
+/****************************************************************************
+ * include/nuttx/sensors/ms5805.h
+ *
+ *   Copyright (C) 2015 Omni Hoverboards Inc. All rights reserved.
+ *   Author: Paul Alexander Patience <paul-a.patience@polymtl.ca>
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#ifndef __INCLUDE_NUTTX_SENSORS_MS5805
+#define __INCLUDE_NUTTX_SENSORS_MS5805
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/fs/ioctl.h>
+
+#if defined(CONFIG_I2C) && defined(CONFIG_MS5805)
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+/* Configuration ************************************************************
+ * Prerequisites:
+ *
+ * CONFIG_I2C
+ *   Enables support for I2C drivers
+ * CONFIG_MS5805
+ *   Enables support for the MS5805 driver
+ */
+
+/* IOCTL Commands ***********************************************************/
+
+#define SNIOC_MEASURE      _SNIOC(0x0001) /* Arg: None */
+#define SNIOC_TEMPERATURE  _SNIOC(0x0002) /* Arg: int32_t* pointer */
+#define SNIOC_PRESSURE     _SNIOC(0x0003) /* Arg: int32_t* pointer */
+#define SNIOC_RESET        _SNIOC(0x0004) /* Arg: None */
+#define SNIOC_OVERSAMPLING _SNIOC(0x0005) /* Arg: uint16_t value */
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+struct i2c_dev_s;
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Name: ms5805_register
+ *
+ * Description:
+ *   Register the MS5805 character device as 'devpath'.
+ *
+ * Input Parameters:
+ *   devpath - The full path to the driver to register, e.g., "/dev/press0".
+ *   i2c     - An I2C driver instance.
+ *   osr     - The oversampling ratio.
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int ms5805_register(FAR const char *devpath, FAR struct i2c_dev_s *i2c,
+                    uint16_t osr);
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CONFIG_I2C && CONFIG_MS5805 */
+#endif /* __INCLUDE_NUTTX_SENSORS_MS5805 */