drivers/lps331ap: added SAUL integration

drivers/include/lps331ap.h

@@ -53,6 +53,15 @@ typedef enum {
     LPS331AP_RATE_25HZ = 7      /**< sample with 25Hz */
 } lps331ap_rate_t;
 
+/**
+ * @brief   Struct holding all parameters needed for device initialization
+ */
+typedef struct {
+    i2c_t i2c;                  /**< I2C bus the sensor is connected to */
+    uint8_t addr;               /**< the devices address on the bus */
+    lps331ap_rate_t rate;       /**< tell sensor to sample with this rate */
+} lps331ap_params_t;
+
 /**
  * @brief Initialize a given LPS331AP pressure sensor
  *

drivers/lps331ap/lps331ap_saul.c

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2015 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     driver_lps331ap
+ * @{
+ *
+ * @file
+ * @brief       LPS331ap adaption to the RIOT actuator/sensor interface
+ *
+ * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
+ *
+ * @}
+ */
+
+#include <string.h>
+
+#include "saul.h"
+#include "lps331ap.h"
+
+static int read(void *dev, phydat_t *res)
+{
+    lps331ap_t *d = (lps331ap_t *)dev;
+    res->val[0] = (int16_t)lps331ap_read_pres(d);
+    memset(&(res->val[1]), 0, 2 * sizeof(int16_t));
+    res->unit = UNIT_BAR;
+    res->scale = -3;
+    return 1;
+}
+
+static int write(void *dev, phydat_t *state)
+{
+    return -ENOTSUP;
+}
+
+const saul_driver_t lps331ap_saul_driver = {
+    .read = read,
+    .write = write,
+    .type = SAUL_SENSE_PRESS,
+};