lmt01.h 1.64 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
/* Copyright (c) 2017 Philippe Kalaf, MIT License
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
 * and associated documentation files (the "Software"), to deal in the Software without restriction, 
 * including without limitation the rights to use, copy, modify, merge, publish, distribute, 
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is 
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or 
 * substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

/* LMT01 temperature sensor driver */

#ifndef lmt01_h
#define lmt01_h

#include "mbed.h"

class LMT01 
{
public:
    LMT01(PinName pin);

31 32
    static const int _pulse_temp_table[20][2];

33 34 35
    void increment();
    int read_int();
    float read();
36
    uint16_t get_last_pulse_count();
37 38 39

private:
    InterruptIn _interrupt;
40 41
    volatile uint16_t _pulse_count;
    volatile uint16_t _last_pulse_count;
42 43 44
    // temperature in 10^3 Celsius
    volatile int _temperature;
    Timer _pulse_timer;
45 46 47
    Ticker _ticker;

    void worker();
48 49
};

50
#endif// lmt01_h