B4R Question one wire library...

[rbghongade]

Dear Erel,
can we have the one wire library for B4R?
regards,

 

[Erel]

Which sensor do you wan to connect to?

 

[rbghongade]

I work with DS18b20 temperature sensor. Would plan to combine temp acquisition with MQTT .

 

[rwblinn]

Hi,

according Arduino Example code, this sensor also requires the Dallas Temperature Library.
Arduino Code (tested)

/* DS18B20 Sensor Arduino Uno */
#include <OneWire.h>
#include <DallasTemperature.h>
#define ONE_WIRE_BUS 3
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
DeviceAddress tempadr = { 0x28, 0xFF, 0x5E, 0x18, 0x04, 0x15, 0x03, 0x34 };

void setup()
{
  Serial.begin(9600);
  sensors.begin();
  sensors.setResolution(tempadr, 10);
}

void printTemp(DeviceAddress deviceAddress)
{
  float tempC = sensors.getTempC(deviceAddress);
  if (tempC == -127.00) {
    Serial.print("Error getting temperature");
  } else {
    Serial.print("C: ");
    Serial.print(tempC);
    Serial.print(" F: ");
    Serial.print(DallasTemperature::toFahrenheit(tempC));
  }
}

void loop()
{
  delay(2500);
  Serial.print("Getting Temperatures...\n\r");
  sensors.requestTemperatures();
  Serial.print("Temperature: ");
  printTemp(tempadr);
  Serial.print("\n\r");
}

 

[Erel]

Please try this library: https://www.b4x.com/android/forum/threads/onewire-dallastemperature.66030/

I haven't tested it with a sensor.

 

[rbghongade]

@Erel,
Thank you! You made my day!