RIOT/sys/auto_init/saul/auto_init_bmp180.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     auto_init_saul
 * @{
 *
 * @file
 * @brief       Auto initialization of BMP180 driver.
 *
 * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
 *
 * @}
 */

#ifdef MODULE_BMP180

#include "log.h"
#include "saul_reg.h"

#include "bmp180_params.h"

/**
 * @brief   Define the number of configured sensors
 */
#define BMP180_NUMOF    (sizeof(bmp180_params) / sizeof(bmp180_params[0]))

/**
 * @brief   Allocation of memory for device descriptors
 */
static bmp180_t bmp180_devs[BMP180_NUMOF];

/**
 * @brief   Memory for the SAUL registry entries
 */
static saul_reg_t saul_entries[BMP180_NUMOF * 2];

/**
 * @brief   Reference the driver structs.
 * @{
 */
extern const saul_driver_t bmp180_temperature_saul_driver;
extern const saul_driver_t bmp180_pressure_saul_driver;
/** @} */

/**
 * @brief   Allocate and configure entries to the SAUL registry
 */
saul_reg_t bmp180_saul_reg_info[][2] =
{
    {
        {
            .name= "bmp180-temp",
            .driver = &bmp180_temperature_saul_driver
        },
        {
            .name = "bmp180-press",
            .driver = &bmp180_pressure_saul_driver
        }
    }
};

void auto_init_bmp180(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);
            return;
        }

        /* temperature */
        saul_entries[(i * 2)].dev = &(bmp180_devs[i]);
        saul_entries[(i * 2)].name = bmp180_saul_reg_info[i][0].name;
        saul_entries[(i * 2)].driver = &bmp180_temperature_saul_driver;

        /* atmospheric pressure */
        saul_entries[(i * 2) + 1].dev = &(bmp180_devs[i]);
        saul_entries[(i * 2) + 1].name = bmp180_saul_reg_info[i][1].name;
        saul_entries[(i * 2) + 1].driver = &bmp180_pressure_saul_driver;

        /* register to saul */
        saul_reg_add(&(saul_entries[(i * 2)]));
        saul_reg_add(&(saul_entries[(i * 2) + 1]));
    }
}
#else
typedef int dont_be_pedantic;
#endif /* MODULE_BMP180 */