PQ_Hybrid_Electrical_Equipment_Team / HDC1050_lib

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

HDC1050.cpp

Committer:
zebrin1422
Date:
2018-05-02
Revision:
4:daaadb8bc892
Parent:
1:db08a3faa811

File content as of revision 4:daaadb8bc892:

#include"mbed.h"
#include"HDC1050.h"

//Serial pc(USBTX, USBRX); //tx, rx

myHDC1050 :: myHDC1050(I2C &i2cBus){
    i2c = &i2cBus;
    i2c->frequency(400000);
}
/**************
温度、湿度を同時にとるか、個別にとるかを選択
同時に取得             i=0
個別に取得             i=1
同時に取得(ヒーター付き) i=2
****************/
void myHDC1050::setup(int i)
{
    reg = check_reg;
    char cmd[3][2];
    cmd[0][0] = 0x10; cmd[0][1] = 0x00;
    cmd[1][0] = 0x00; cmd[1][1] = 0x00;
    cmd[2][0] = 0x03; cmd[2][1] = 0x00;
    
    i2c->write(SLV_WRITE, &reg, 1, true);
    i2c->write(SLV_WRITE, cmd[i], 2, false);
}

/******************
HDC1050との接続確認
0が返ってくればOK
1が返ってくればError
*******************/
    
int myHDC1050::Connection_check()
{
    char reg = check_reg;
    char check[2];
    
    i2c->write(SLV_WRITE,&reg,1);
    i2c->read(SLV_READ,check,2);
    
    if(check[0] == 0x10 && check[1] == 0x50)return 0;
    else return 1;

}    
/*************
温度、湿度を取得

@example

  float temp,hum;

  myHDC1050.setup(0); or myHDC1050.setup(2);
  myHDC1050.get_temp_hum(&temp,&hum);
**************/
void myHDC1050::get_temp_hum(float *temp, float *hum)
{
    char reg = Temperature_reg;
    char buff[4];
    unsigned int val[4];
    
    //setup(0);
    
    i2c->write(SLV_WRITE, &reg,1);
    wait_ms(250);
    i2c->read(SLV_READ, buff,4,false);
    
    val[0] = (unsigned int)buff[0] << 8;
    val[1] = (unsigned int)buff[1];
    val[2] = (unsigned int)buff[2] << 8;
    val[3] = (unsigned int)buff[3];
    
    *temp = (float)(val[0] | val[1]);
    *hum  = (float)(val[2] | val[3]);
    
    *temp = *temp*165.0/65536.0 - 40.0;
    *hum = *hum*100.0/65536.0;

}
/*************
温度を取得

@example

  float temp;

  myHDC1050.setup(1);
  temp = myHDC1050.get_temp();
**************/
float myHDC1050::get_temp()
{
    char reg = Temperature_reg;
    char buff[2];
    unsigned int val[2];     
    float temp;
    
    //setup(1);
       
    i2c->write(SLV_WRITE, &reg,1);
    wait_ms(130);
    i2c->read(SLV_READ, buff, 2,false);
    
    val[0] = (unsigned int)buff[0] << 8;
    val[1] = (unsigned int)buff[1];
    
    temp = (float)(val[0] | val[1]);
    temp = temp *165.0/65536.0 - 40.0;
    
    return temp;
    
}
/*************
湿度を取得

@example

  float hum;

  myHDC1050.setup(1);
  hum = myHDC1050.get_hum();
**************/
float myHDC1050::get_hum()
{
    char reg = Humidity_reg;
    char buff[2];
    unsigned int val[2];
    float hum;
    
    setup(1);
     
    i2c->write(SLV_WRITE, &reg,1);
    wait_ms(130);
    i2c->read(SLV_READ, buff, 2,false);
    
    val[0] = (unsigned int)buff[0] << 8;
    val[1] = (unsigned int)buff[1];
    
    hum = (float)(val[0] | val[1]);
    hum = hum*100.0/65536.0;
    
    return hum;

}