不韋 呂 / UIT_ADT7410

I2C 接続の温度センサ ADT7410 用のライブラリ． Library for temperature sensor ADT7410 connected using I2C interface.

Dependents:   Mbed2_ConnectTestAll Demo_ADT7410

ADT7410.cpp

Committer:
MikamiUitOpen
Date:
2020-04-02
Revision:
6:438204ab1793
Parent:
5:bbcd91ba7c6b
Child:
7:990e3c54ac51

File content as of revision 6:438204ab1793:

//--------------------------------------------------------------
//  Class for ADT7410
//      Default: 13-bit resolution
//
//  このプログラムを作った際の mbed のリビジョン：Rev.172
//  2020/04/02, Copyright (c) 2020 MIKAMI, Naoki
//--------------------------------------------------------------

#include "ADT7410.hpp"

namespace Mikami
{
    // Constructor
    ADT7410::ADT7410(PinName sda, PinName scl, uint8_t addr)
        : ADDR_(addr), i2c_(sda, scl)
    {   Reset(); }

    // Get value in configuration register
    // See Figure 17 in data sheet of ADT7410
    uint8_t ADT7410::GetConfig()
    {
        WriteSingleByte(CONFIG_, true);

        char rReg[1];
        i2c_.read(ADDR_, rReg, 1);

        return rReg[0];
    }

    // Read temperature
    // See Figure 18 in data sheet of ADT7410
    float ADT7410::Read()
    {
        WriteSingleByte(TEMPER_, true);

        char rReg[2];
        i2c_.read(ADDR_, rReg, 2);

        int16_t value = (rReg[0] << 8) | rReg[1];
        if ( (GetConfig() & 0x80) == 0x00 )
            value &= 0xfff8;        // For 13-bit resolution

        return value/128.0f;
    }

    // Reset
    // See p.19 in data sheet Rev.A of ADT7410
    void ADT7410::Reset()
    {
        WriteSingleByte(RESET_);
        wait_ms(250);
        SetConfig(0x00);
    }
}