Jens Strümper / MLX90614

Recent implementation of a MLX90614 IR temperature sensor library based on the example code of Jonathan Jones. Working with the current I2C mbed library.

Dependents:   Antarctic

MLX90614.h@0:755bd47fd6be, 2016-09-05 (annotated)

Committer:
jensstruemper
Date:
Mon Sep 05 10:52:54 2016 +0000
Revision:
0:755bd47fd6be
initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jensstruemper 0:755bd47fd6be 1 /*
jensstruemper 0:755bd47fd6be 2 Copyright (c) 2016 Jens Strümper based on the work of Jonathan Jones.
jensstruemper 0:755bd47fd6be 3
jensstruemper 0:755bd47fd6be 4 Permission is hereby granted, free of charge, to any person obtaining a copy
jensstruemper 0:755bd47fd6be 5 of this software and associated documentation files (the "Software"), to deal
jensstruemper 0:755bd47fd6be 6 in the Software without restriction, including without limitation the rights
jensstruemper 0:755bd47fd6be 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
jensstruemper 0:755bd47fd6be 8 copies of the Software, and to permit persons to whom the Software is
jensstruemper 0:755bd47fd6be 9 furnished to do so, subject to the following conditions:
jensstruemper 0:755bd47fd6be 10
jensstruemper 0:755bd47fd6be 11 The above copyright notice and this permission notice shall be included in
jensstruemper 0:755bd47fd6be 12 all copies or substantial portions of the Software.
jensstruemper 0:755bd47fd6be 13
jensstruemper 0:755bd47fd6be 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
jensstruemper 0:755bd47fd6be 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
jensstruemper 0:755bd47fd6be 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
jensstruemper 0:755bd47fd6be 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
jensstruemper 0:755bd47fd6be 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
jensstruemper 0:755bd47fd6be 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
jensstruemper 0:755bd47fd6be 20 THE SOFTWARE.
jensstruemper 0:755bd47fd6be 21 */
jensstruemper 0:755bd47fd6be 22
jensstruemper 0:755bd47fd6be 23 #ifndef MLX90614_H
jensstruemper 0:755bd47fd6be 24 #define MLX90614_H
jensstruemper 0:755bd47fd6be 25
jensstruemper 0:755bd47fd6be 26 #ifndef MBED_H
jensstruemper 0:755bd47fd6be 27 #include "mbed.h"
jensstruemper 0:755bd47fd6be 28 #endif
jensstruemper 0:755bd47fd6be 29
jensstruemper 0:755bd47fd6be 30 namespace js {
jensstruemper 0:755bd47fd6be 31
jensstruemper 0:755bd47fd6be 32 /** Due to changes in mbed's I2C stack older implementation of the MLX9064 library do currently not work.
jensstruemper 0:755bd47fd6be 33 * This recent implementation wraps the example code of Jonathan Jones into a library.
jensstruemper 0:755bd47fd6be 34 *
jensstruemper 0:755bd47fd6be 35 * The float read_temp(int select) memeber function will take one argument:
jensstruemper 0:755bd47fd6be 36 * <ul>
jensstruemper 0:755bd47fd6be 37 * <li> "0" to return ambient temperature </li>
jensstruemper 0:755bd47fd6be 38 * <li> "1" to retunr object temperature </li>
jensstruemper 0:755bd47fd6be 39 * </ul>
jensstruemper 0:755bd47fd6be 40 *
jensstruemper 0:755bd47fd6be 41 * Example:
jensstruemper 0:755bd47fd6be 42 * @code
jensstruemper 0:755bd47fd6be 43 * #include "mbed.h"
jensstruemper 0:755bd47fd6be 44 * #include "MLX90614.h"
jensstruemper 0:755bd47fd6be 45 *
jensstruemper 0:755bd47fd6be 46 * I2C i2c(p16, p17); //I2C_SDA, I2C_SCL
jensstruemper 0:755bd47fd6be 47 * MLX90614 mlx90614(&i2c);
jensstruemper 0:755bd47fd6be 48 *
jensstruemper 0:755bd47fd6be 49 * float temp;
jensstruemper 0:755bd47fd6be 50 * int select; // 0 = object temp, 1 = ambient temp
jensstruemper 0:755bd47fd6be 51 *
jensstruemper 0:755bd47fd6be 52 * int main(){
jensstruemper 0:755bd47fd6be 53 while(true){
jensstruemper 0:755bd47fd6be 54 temp=mlx90614.read_temp(1);
jensstruemper 0:755bd47fd6be 55 printf("%4.2f Celcius\r\n", temp);
jensstruemper 0:755bd47fd6be 56 wait(1);
jensstruemper 0:755bd47fd6be 57 }
jensstruemper 0:755bd47fd6be 58 }
jensstruemper 0:755bd47fd6be 59 * @endcode
jensstruemper 0:755bd47fd6be 60 */
jensstruemper 0:755bd47fd6be 61
jensstruemper 0:755bd47fd6be 62 class MLX90614 {
jensstruemper 0:755bd47fd6be 63
jensstruemper 0:755bd47fd6be 64 public:
jensstruemper 0:755bd47fd6be 65
jensstruemper 0:755bd47fd6be 66 MLX90614(PinName sda, PinName scl);
jensstruemper 0:755bd47fd6be 67
jensstruemper 0:755bd47fd6be 68 MLX90614(I2C *i2c);
jensstruemper 0:755bd47fd6be 69
jensstruemper 0:755bd47fd6be 70 ~MLX90614();
jensstruemper 0:755bd47fd6be 71
jensstruemper 0:755bd47fd6be 72 float read_temp(int select);
jensstruemper 0:755bd47fd6be 73
jensstruemper 0:755bd47fd6be 74 protected:
jensstruemper 0:755bd47fd6be 75
jensstruemper 0:755bd47fd6be 76 float get_temp(uint8_t reg);
jensstruemper 0:755bd47fd6be 77
jensstruemper 0:755bd47fd6be 78 private:
jensstruemper 0:755bd47fd6be 79
jensstruemper 0:755bd47fd6be 80 I2C *i2c_;
jensstruemper 0:755bd47fd6be 81
jensstruemper 0:755bd47fd6be 82 static const int default_addr = 0x00;
jensstruemper 0:755bd47fd6be 83 static const int T_ambient = 0x06;
jensstruemper 0:755bd47fd6be 84 static const int T_obj1 = 0x07;
jensstruemper 0:755bd47fd6be 85 static const int ram_access = 0x00;
jensstruemper 0:755bd47fd6be 86
jensstruemper 0:755bd47fd6be 87 };
jensstruemper 0:755bd47fd6be 88
jensstruemper 0:755bd47fd6be 89 } //namespace js
jensstruemper 0:755bd47fd6be 90
jensstruemper 0:755bd47fd6be 91 using namespace js;
jensstruemper 0:755bd47fd6be 92
jensstruemper 0:755bd47fd6be 93 #endif