srf02.h

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/*
 * Copyright (C) 2013 Zakaria Kasmi <zkasmi@inf.fu-berlin.de>
 *               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.
 */
 
#pragma once

 
#include <stdint.h>
#include "periph/i2c.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#define SRF02_DEFAULT_ADDR      (0xe0)      /* 224 decimal */

#define SRF02_RANGE_DELAY       (70000U)

typedef struct {
    i2c_t i2c;               
    uint8_t addr;            
} srf02_t;

typedef enum {
    SRF02_MODE_REAL_INCH    = 0x50,     
    SRF02_MODE_REAL_CM      = 0x51,     
    SRF02_MODE_REAL_MS      = 0x52,     
    SRF02_MODE_FAKE_INCH    = 0x56,     
    SRF02_MODE_FAKE_CM      = 0x57,     
    SRF02_MODE_FAKE_MS      = 0x58      
} srf02_mode_t;

int srf02_init(srf02_t *dev, i2c_t i2c, uint8_t addr);

int srf02_trigger(const srf02_t *dev, srf02_mode_t mode);

uint16_t srf02_read(const srf02_t *dev);

uint16_t srf02_get_distance(const srf02_t *dev, srf02_mode_t mode);

int srf02_set_addr(srf02_t *dev, uint8_t new_addr);
 
#ifdef __cplusplus
}
#endif