I am trying to get a single DS18B20 wroking, but all the code from turotials and other sources on the internet will not compile, all the code was said to be updated for V1.0x.
I copied some code from this forum and got similar error messages, the error messages were ;
sketch_aug25a:9: error: 'OneWire' does not name a type
sketch_aug25a.cpp: In function 'void loop()':
sketch_aug25a:27: error: 'ds' was not declared in this scope
:sketch_aug25a:42: error: 'OneWire' has not been declared
sketch_aug25a:70: error: 'ds' was not declared in this scope
The copied code was ;
#include <OneWire.h>
// OneWire DS18S20, DS18B20, DS1822 Temperature Example
//
// http://www.pjrc.com/teensy/td_libs_OneWire.html
//
// The DallasTemperature library can do all this work for you!
// http://milesburton.com/Dallas_Temperature_Control_Library
OneWire ds(2); // on pin 2
void setup(void) {
pinMode(13, OUTPUT); //anode
pinMode(12, OUTPUT); //red
pinMode(11, OUTPUT); //green
pinMode(10, OUTPUT); //blue
//Serial.begin(9600);
}
void loop(void) {
byte i;
byte present = 0;
byte type_s;
byte data[12];
byte addr[8];
float celsius, fahrenheit;
if ( !ds.search(addr)) {
//Serial.println("No more addresses.");
//Serial.println();
ds.reset_search();
delay(250);
return;
}
//Serial.print("ROM =");
for( i = 0; i < 8; i++) {
//Serial.write(' ');
//Serial.print(addr[i], HEX);
}
if (OneWire::crc8(addr, 7) != addr[7]) {
//Serial.println("CRC is not valid!");
return;
}
//Serial.println();
// the first ROM byte indicates which chip
switch (addr[0]) {
case 0x10:
// Serial.println(" Chip = DS18S20"); // or old DS1820
type_s = 1;
break;
case 0x28:
// Serial.println(" Chip = DS18B20");
type_s = 0;
break;
case 0x22:
// Serial.println(" Chip = DS1822");
type_s = 0;
break;
default:
// Serial.println("Device is not a DS18x20 family device.");
return;
}
ds.reset();
ds.select(addr);
ds.write(0x44,1); // start conversion, with parasite power on at the end
delay(1000); // maybe 750ms is enough, maybe not
// we might do a ds.depower() here, but the reset will take care of it.
present = ds.reset();
ds.select(addr);
ds.write(0xBE); // Read Scratchpad
//Serial.print(" Data = ");
//Serial.print(present,HEX);
//Serial.print(" ");
for ( i = 0; i < 9; i++) { // we need 9 bytes
data[i] = ds.read();
//Serial.print(data[i], HEX);
//Serial.print(" ");
}
//Serial.print(" CRC=");
//Serial.print(OneWire::crc8(data, 8), HEX);
//Serial.println();
// convert the data to actual temperature
unsigned int raw = (data[1] << 8) | data[0];
if (type_s) {
raw = raw << 3; // 9 bit resolution default
if (data[7] == 0x10) {
// count remain gives full 12 bit resolution
raw = (raw & 0xFFF0) + 12 - data[6];
}
} else {
byte cfg = (data[4] & 0x60);
if (cfg == 0x00) raw = raw << 3; // 9 bit resolution, 93.75 ms
else if (cfg == 0x20) raw = raw << 2; // 10 bit res, 187.5 ms
else if (cfg == 0x40) raw = raw << 1; // 11 bit res, 375 ms
// default is 12 bit resolution, 750 ms conversion time
}
celsius = (float)raw / 16.0;
fahrenheit = celsius * 1.8 + 32.0;
//Serial.print(" Temperature = ");
//Serial.print(celsius);
//Serial.print(" Celsius, ");
//Serial.print(fahrenheit);
//Serial.println(" Fahrenheit");
digitalWrite(13, HIGH);
if(fahrenheit >= 68 && fahrenheit <= 83)
{
digitalWrite(12, HIGH);
digitalWrite(10, HIGH);
}
else if(fahrenheit < 68)
{
digitalWrite(12, HIGH);
digitalWrite(11, HIGH);
}
else if(fahrenheit > 83)
{
digitalWrite(11, HIGH);
digitalWrite(10, HIGH);
}
}
Can anyone help or has anyone had similar a similar problem ?
Moderator edit: code tags added, italics removed.
Part of problem solved, I had not copied the libaries to the right place (silly me).