/*!
  @file
  @brief show 1-wire stuff

  Here we have some sensors.

  There are a number of ways to connect multiple 1wire devices.
  If they are all on one bus then there's the issue of destinguishing them;
  note that they come from the factory with "random" IDs.

  We can go through a config phase to determine which one's which.
    - store sensor's role in the DS18B20's EEPROM
    - manually determine the ID and then write that to Arduino's
        EEPROM or to SD card config file.

  Or we go for multiple 1-wire buses with just one sensor per bus.
    Then we label our bread-board/screw-block for each location.

  Note that if you want all the DS18B20s on one bus they must have believable
  IDs. So in `attrs` set "deviceID" to "28"<14 hex digits>, so giving 8byte ID
  (see DS18b20 documentation)
  */

#include <LiquidCrystal_I2C.h>
#include <OneWire.h>
#include <DallasTemperature.h>

LiquidCrystal_I2C lcd(0x27,16,2);

OneWire _1wire0(2);
OneWire _1wire1(3);
OneWire _1wire2(4);
OneWire _1wire3(5);

DallasTemperature dallas0(&_1wire0);
DallasTemperature dallas1(&_1wire1);
DallasTemperature dallas2(&_1wire2);
DallasTemperature dallas3(&_1wire3);


void setup() {
  Serial.begin(9600);
  lcd.begin(16,2);
  lcd.backlight();
  lcd.print("hello");

  dallas0.begin();
  dallas1.begin();
  dallas2.begin();
  dallas3.begin();

}

float get_temp(int Idx,DallasTemperature & Dallas)
{
  Dallas.requestTemperatures(); // Send the command to get temperatures
  //Serial.println("DONE");

  float temp_c =  Dallas.getTempCByIndex(0);

  Serial.print(" :");
  Serial.print(Idx);
  Serial.print(": ");
  Serial.print(temp_c);

  return temp_c;
}

int zzz = 500;
int N =0;
void loop() {
  Serial.print(N);

  lcd.setCursor(0,1);
  lcd.print(N++);

  lcd.setCursor(0,0); lcd.print(get_temp(0,dallas0));
  lcd.setCursor(8,0); lcd.print(get_temp(1,dallas1));
  lcd.setCursor(0,1); lcd.print(get_temp(2,dallas2));
  lcd.setCursor(8,1); lcd.print(get_temp(3,dallas3));
  Serial.println("");


  delay(zzz);
}
//eof