drivers/bmp180: add saul adaptation

drivers/bmp180/bmp180.c

@@ -19,14 +19,22 @@
  */
 
 #include <math.h>
+
+#include "log.h"
 #include "bmp180.h"
 #include "bmp180_internals.h"
+#include "bmp180_params.h"
 #include "periph/i2c.h"
 #include "xtimer.h"
 
 #define ENABLE_DEBUG        (0)
 #include "debug.h"
 
+/**
+ * @brief   Allocation of memory for device descriptors
+ */
+bmp180_t bmp180_devs[BMP180_NUMOF];
+
 /* Internal function prototypes */
 static int _read_ut(bmp180_t *dev, int32_t *ut);
 static int _read_up(bmp180_t *dev, int32_t *up);
@@ -99,6 +107,21 @@ int bmp180_init(bmp180_t *dev, i2c_t i2c, uint8_t mode)
     return 0;
 }
 
+void bmp180_auto_init(void)
+{
+    for (unsigned i = 0; i < BMP180_NUMOF; i++) {
+        if (bmp180_init(&bmp180_devs[i], bmp180_params[i].i2c_dev, bmp180_params[i].mode) < 0) {
+            LOG_ERROR("Unable to initialize BMP180 sensor #%i\n", i);
+        }
+#ifdef MODULE_SAUL_REG
+        for (int j = 0; j < 2; j++) {
+            bmp180_saul_reg[i][j].dev = &bmp180_devs[i];
+            saul_reg_add(&bmp180_saul_reg[i][j]);
+        }
+#endif
+    }
+}
+
 int bmp180_read_temperature(bmp180_t *dev, int32_t *temperature)
 {
     int32_t ut, b5;

drivers/bmp180/bmp180_saul.c

+/*
+ * Copyright (C) 2016 Inria
+ *
+ * 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     drivers_bmp180
+ * @{
+ *
+ * @file
+ * @brief       SAUL adaption for BMP180 device
+ *
+ * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ *
+ * @}
+ */
+
+#include <string.h>
+
+#include "saul.h"
+#include "bmp180.h"
+#include "xtimer.h"
+
+static int32_t temperature, pressure;
+
+static int check_and_read_temperature(void *dev, phydat_t *res)
+{
+    bmp180_t *d = (bmp180_t *)dev;
+
+    bmp180_read_temperature(d, &temperature);
+    res->val[0] = temperature;
+    res->unit = UNIT_TEMP_C;
+    res->scale = -1;
+    return 1;
+}
+
+static int check_and_read_pressure(void *dev, phydat_t *res)
+{
+    bmp180_t *d = (bmp180_t *)dev;
+
+    bmp180_read_pressure(d, &pressure);
+
+    res->val[0] = pressure/10;
+    res->unit = UNIT_PA;
+    res->scale = 1;
+    return 1;
+}
+
+static int read_temperature(void *dev, phydat_t *res)
+{
+    return check_and_read_temperature(dev, res);
+}
+
+static int read_pressure(void *dev, phydat_t *res)
+{
+    return check_and_read_pressure(dev, res);
+}
+
+const saul_driver_t bmp180_temperature_saul_driver = {
+    .read = read_temperature,
+    .write = saul_notsup,
+    .type = SAUL_SENSE_TEMP
+};
+
+const saul_driver_t bmp180_pressure_saul_driver = {
+    .read = read_pressure,
+    .write = saul_notsup,
+    .type = SAUL_SENSE_PRESS
+};

drivers/bmp180/include/bmp180_params.h

+/*
+ * Copyright (C) 2016 Inria
+ *
+ * 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     drivers_bmp180
+ *
+ * @{
+ * @file
+ * @brief       Default configuration for BMP180
+ *
+ * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ */
+
+#ifndef BMP180_PARAMS_H
+#define BMP180_PARAMS_H
+
+#include "board.h"
+#include "bmp180.h"
+#include "saul_reg.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief   Set default configuration parameters for the BMP180
+ * @{
+ */
+#ifndef BMP180_PARAM_I2C_DEV
+#define BMP180_PARAM_I2C_DEV         (0)
+#endif
+#ifndef BMP180_PARAM_MODE
+#define BMP180_PARAM_MODE            BMP180_ULTRALOWPOWER
+#endif
+
+#define BMP180_PARAMS_DEFAULT        {.i2c_dev = BMP180_PARAM_I2C_DEV,  \
+                                      .mode    = BMP180_PARAM_MODE }
+/**@}*/
+
+/**
+ * @brief   Configure BMP180
+ */
+static const bmp180_params_t bmp180_params[] =
+{
+#ifdef BMP180_PARAMS_BOARD
+    BMP180_PARAMS_BOARD,
+#else
+    BMP180_PARAMS_DEFAULT,
+#endif
+};
+
+/**
+ * @brief   Get the number of configured BMP180 devices
+ */
+#define BMP180_NUMOF       (sizeof(bmp180_params) / sizeof(bmp180_params[0]))
+
+#ifdef MODULE_SAUL_REG
+/**
+ * @brief   Allocate and configure entries to the SAUL registry
+ */
+saul_reg_t bmp180_saul_reg[][2] =
+{
+    {
+        {
+            .name = "bmp180-temp",
+            .driver = &bmp180_temperature_saul_driver
+        },
+        {
+            .name = "bmp180-press",
+            .driver = &bmp180_pressure_saul_driver
+        },
+    }
+};
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BMP180_PARAMS_H */
+/** @} */

drivers/include/bmp180.h

@@ -21,6 +21,7 @@
 #ifndef BMP180_H_
 #define BMP180_H_
 
+#include "saul.h"
 #include "periph/i2c.h"
 
 #ifdef __cplusplus
@@ -63,6 +64,28 @@ typedef struct {
     uint8_t oversampling;              /**< Oversampling mode */
 } bmp180_t;
 
+
+/**
+ * @brief Device initialization parameters
+ */
+typedef struct {
+    i2c_t i2c_dev;
+    uint8_t mode;
+} bmp180_params_t;
+
+/**
+ * @brief export SAUL endpoints
+ * @{
+ */
+extern const saul_driver_t bmp180_temperature_saul_driver;
+extern const saul_driver_t bmp180_pressure_saul_driver;
+/** @} */
+
+/**
+ * @brief auto-initialize all configured BMP180 devices
+ */
+void bmp180_auto_init(void);
+
 /**
  * @brief Initialize the given BMP180 device
  *

sys/auto_init/auto_init.c

@@ -24,6 +24,10 @@
 #include "config.h"
 #endif
 
+#ifdef MODULE_BMP180
+#include "bmp180.h"
+#endif
+
 #ifdef MODULE_SHT11
 #include "sht11.h"
 #endif
@@ -109,6 +113,10 @@ void auto_init(void)
     DEBUG("Auto init rtc module.\n");
     rtc_init();
 #endif
+#ifdef MODULE_BMP180
+    DEBUG("Auto init BMP180 module.\n");
+    bmp180_auto_init();
+#endif
 #ifdef MODULE_SHT11
     DEBUG("Auto init SHT11 module.\n");
     sht11_init();