Merged in Justifa/nuttx (pull request #866)

add missing files of BMP180 example for nucleo-l476rg

Approved-by: Gregory Nutt <gnutt@nuttx.org>

configs/nucleo-l476rg/src/Makefile

@@ -93,6 +93,10 @@ ifeq ($(CONFIG_SENSORS_LSM303AGR),y)
 CSRCS += stm32_lsm303agr.c
 endif
 
+ifeq ($(CONFIG_SENSORS_BMP180),y)
+CSRCS += stm32_bmp180.c
+endif
+
 ifeq ($(CONFIG_PWM),y)
 CSRCS += stm32_pwm.c
 endif

configs/nucleo-l476rg/src/nucleo-l476rg.h

@@ -421,4 +421,16 @@ int stm32l4_qencoder_initialize(FAR const char *devpath, int timer);
 int stm32l4_cc1101_initialize(void);
 #endif
 
+/****************************************************************************
+ * Name: stm32_bmp180initialize
+ *
+ * Description:
+ * Called to configure an I2C and to register BMP180.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SENSORS_BMP180
+int stm32_bmp180initialize(FAR const char *devpath);
+#endif
+
 #endif /* __CONFIGS_NUCLEO_L476RG_SRC_NUCLEO_L476RG_H */

configs/nucleo-l476rg/src/stm32_appinit.c

@@ -190,6 +190,16 @@ int board_app_initialize(uintptr_t arg)
   syslog(LOG_INFO, "[boot] Initialized SDIO\n");
 #endif
 
+#ifdef CONFIG_SENSORS_BMP180
+  ret = stm32_bmp180initialize("/dev/press0");
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize BMP180, error %d\n", ret);
+      return ret;
+    }
+#endif
+
+
 #ifdef CONFIG_PWM
   /* Initialize PWM and register the PWM device. */
 

configs/nucleo-l476rg/src/stm32_bmp180.c

@@ -0,0 +1,99 @@
+/************************************************************************************
+ * configs/stm32f4discovery/src/stm32_bmp180.c
+ *
+ *   Copyright (C) 2015 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.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/spi/spi.h>
+#include <nuttx/sensors/bmp180.h>
+
+#include "stm32l4.h"
+#include "stm32l4_i2c.h"
+#include "nucleo-l476rg.h"
+
+#if defined(CONFIG_I2C) && defined(CONFIG_SENSORS_BMP180)
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: stm32_bmp180initialize
+ *
+ * Description:
+ *   Initialize and register the MPL115A Pressure Sensor driver.
+ *
+ * Input Parameters:
+ *   devpath - The full path to the driver to register. E.g., "/dev/press0"
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ************************************************************************************/
+
+int stm32_bmp180initialize(FAR const char *devpath)
+{
+  FAR struct i2c_master_s *i2c;
+  int ret;
+
+  sninfo("Initializing BMP180!\n");
+
+  /* Initialize I2C */
+
+  i2c = stm32l4_i2cbus_initialize(BMP180_I2C_PORTNO);
+
+  if (!i2c)
+    {
+      return -ENODEV;
+    }
+
+  /* Then register the barometer sensor */
+
+  ret = bmp180_register(devpath, i2c);
+  if (ret < 0)
+    {
+      snerr("ERROR: Error registering BM180\n");
+    }
+
+  return ret;
+}
+
+#endif /* CONFIG_I2C && CONFIG_SENSORS_BMP180 */