Hi, I have modified the programmcode of Dallasonewire.h
It works like a charm if only one MAX3150K is connected.
Now I connect 10 works also but the Adress is the same because all adress pins are LOW. I get all Unique ROMS.
How can I get now all Temperatures without using adress. only use unique ROM?
The Code:
//--------------------------------------------------------------------------------------
// TempTX-tiny ATtiny84 Based Wireless Temperature Sensor Node
// By Nathan Chantrell http://nathan.chantrell.net
// Updated by Martin Harizanov (harizanov.com) to work with DS18B20
// To use with DS18B20 instead of TMP36, a 4K7 resistor is needed between the Digital 9 and Digital 10 of the ATTiny (Vdd and DQ)
// To get this to compile follow carefully the discussion here: http://arduino.cc/forum/index.php?topic=91491.0
// GNU GPL V3
//--------------------------------------------------------------------------------------
// modified by meigrafd @ 10.05.2014
//------------------------------------------------------------------------------
//#include <JeeLib.h> // https://github.com/jcw/jeelib
#include "pins_arduino.h"
#include <avr/sleep.h>
#include <OneWire.h>
#include <DallasTemperature.h>
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// PIN-Konfiguration
//------------------------------------------------------------------------------
// SENSOR pins
#define ONE_WIRE_BUS 8 // DS18B20 Temperature sensor is connected on D10/ATtiny pin 13
#define ONE_WIRE_POWER 7 // DS18B20 Power pin is connected on D9/ATtiny pin 12
// LED pin
#define LEDpin 3 // D8, PA2 (ATtiny pin 11) - set to 0 to disable LED
#define SENDDELAY 1000
//------------------------------------------------------------------------------
/*
+-\/-+
VCC 1| |14 GND
(D0) PB0 2| |13 AREF (D10)
(D1) PB1 3| |12 PA1 (D9)
RESET 4| |11 PA2 (D8)
INT0 PWM (D2) PB2 5| |10 PA3 (D7)
PWM (D3) PA7 6| |9 PA4 (D6)
PWM (D4) PA6 7| |8 PA5 (D5) PWM
+----+
*/
//encryption is OPTIONAL
//to enable encryption you will need to:
// - provide a 16-byte encryption KEY (same on all nodes that talk encrypted)
// - to call .Encrypt(KEY) to start encrypting
// - to stop encrypting call .Encrypt(NULL)
//#define KEY "ABCDABCDABCDABCD"
//------------------------------------------------------------------------------
// Setup a oneWire instance to communicate with any OneWire devices
// (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);
// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);
DeviceAddress addr;
// Temperatur-String zum Versand per 433 Mhz
char msg[5];
//################################################################################â€########################################
// blink led
static void blink (byte pin, byte n = 3) {
if (LEDpin) {
pinMode(pin, OUTPUT);
for (byte i = 0; i < 2 * n; ++i) {
delay(100);
digitalWrite(pin, !digitalRead(pin));
}
}
}
//--------------------------------------------------------------------------------------------------
// Read current supply voltage
//--------------------------------------------------------------------------------------------------
long readVcc() {
bitClear(PRR, PRADC);
ADCSRA |= bit(ADEN); // Enable the ADC
long result;
// Read 1.1V reference against Vcc
#if defined(__AVR_ATtiny84__)
ADMUX = _BV(MUX5) | _BV(MUX0); // For ATtiny84
#else
ADMUX = _BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1); // For ATmega328
#endif
delay(2); // Wait for Vref to settle
ADCSRA |= _BV(ADSC); // Convert
while (bit_is_set(ADCSRA,ADSC));
result = ADCL;
result |= ADCH<<8;
result = 1126400L / result; // Back-calculate Vcc in mV
ADCSRA &= ~ bit(ADEN);
bitSet(PRR, PRADC); // Disable the ADC to save power
return result;
}
void setup() {
Serial.begin(38400);
PRR = bit(PRTIM1); // only keep timer 0 going
ADCSRA &= ~ bit(ADEN); bitSet(PRR, PRADC); // Disable the ADC to save power
pinMode(ONE_WIRE_POWER, OUTPUT); // set power pin for DS18B20 to output
digitalWrite(ONE_WIRE_POWER, HIGH); // turn DS18B20 sensor on
delay(50); // Allow 50ms for the sensor to be ready
}
void loop() {
// Start up the library
sensors.begin();
sensors.requestTemperatures(); // Send the command to get temperatures
int i=0;
int j=sensors.getDeviceCount();
for (uint8_t s=0; s < sensors.getDeviceCount(); s++) {
// get the unique address
Serial.print(sensors.getAddress(addr, s));
// just look at bottom two bytes, which is pretty likely to be unique
int smalladdr = (addr[6] << 8) | addr[7];
//Serial.print("#"); Serial.print(s);
Serial.print("ID:"); Serial.print(j);
Serial.print("=");
Serial.print(sensors.getTempCByIndex(i));
Serial.print(",");
i++;
}
i=0;
//digitalWrite(ONE_WIRE_POWER, LOW); // turn Sensor off to save power
//pinMode(ONE_WIRE_POWER, INPUT); // set power pin for Sensor to input before sleeping, saves power
float supplyV = readVcc(); // Get supply voltage
float supply = supplyV/1000;
//itoa(supplyV,&msg[strlen(msg)],10);
Serial.println(supply);
if (LEDpin) {
blink(LEDpin, 2); // blink LED
}
delay(SENDDELAY);
}
Hope someone can help me quick. All Temperature reads the same value because of same adress.
