Send DATA (temperature) from arduino+xbee shield+xbee to xbee+PC in mode API

Projects Programming
1

Hi guys!
How are you? I've came here to ask if someone knows how to send data, like a message using xbee's (end device and coordinator) in mode API???? I need that part of the code please. Im using a 6 digital temperature sensor's in a one-wire protocol (1 wire, several sensors attached) connected to arduino+xbee shield+xbee and, i want to send this temperatures to another xbee connected to a PC using mode API with the program X-CTU. The part that i have working in mode AT of xbee and it worked is this:

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

// Data wire is plugged into pin 3 on the Arduino
#define ONE_WIRE_BUS 3

// Setup a oneWire instance to communicate with any OneWire devices
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);

// Assign the addresses of your 1-Wire temp sensors.
// See the tutorial on how to obtain these addresses:
// Arduino 1-Wire Address Finder

DeviceAddress sensor1 = { 0x28, 0x18, 0x4F, 0x24, 0x03, 0x00, 0x00, 0xF8 };
DeviceAddress sensor2 = { 0x28, 0x34, 0x51, 0x24, 0x03, 0x00, 0x00, 0xED };
DeviceAddress sensor3 = { 0x28, 0x22, 0x84, 0x24, 0x03, 0x00, 0x00, 0x88 };
DeviceAddress sensor4 = { 0x28, 0x2A, 0x78, 0x24, 0x03, 0x00, 0x00, 0xAE };
DeviceAddress sensor5 = { 0x28, 0x01, 0x4F, 0x24, 0x03, 0x00, 0x00, 0x35 };
DeviceAddress sensor6 = { 0x28, 0x4F, 0x88, 0x24, 0x03, 0x00, 0x00, 0x20 };

int myData = 3;

void setup(void)
{
// start serial port
Serial.begin(9600);
// Start up the library
sensors.begin();
// set the resolution to 10 bit (good enough?)
sensors.setResolution(sensor1, 10);
sensors.setResolution(sensor2, 10);
sensors.setResolution(sensor3, 10);
sensors.setResolution(sensor4, 10);
sensors.setResolution(sensor5, 10);
sensors.setResolution(sensor6, 10);
}

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

void loop(void)
{
delay(2000);
sensors.requestTemperatures();

printTemperature(sensor1);
printTemperature(sensor2);
printTemperature(sensor3);
printTemperature(sensor4);
printTemperature(sensor5);
printTemperature(sensor6);

}
Thank you

2

You have to configure the XBees using X-CTU to talk to each other. Set one as the coordinator, the other as a non-coordinator. Then set the receiving address of each XBee to the address of the other.

Then you should be able to treat the XBee on your Arduino as a standard serial port.

Alternatively, you can use an XBee library, but I personally don't like the one I tried.

EDIT: maybe you don't need to configure them. I'm reading the datasheet and product manual now for a personal project. I suggest you do the same. Those are the authoritative sources on how to use XBees.

3

Yep, reading the datasheet really sheds some light on this. It's worth an hour of your time to give it a good once-over. There are a lot of ideas out there on XBee communications, none of which are as lucidly communicated as the information in the datasheet.

4

Hi! I allready configured the xbee's to api mode and used the code above to program the arduino and nothing!! Thanks for the advice but i've read the datasheet and i can't implement anything of those things. I'm using six DS18B20 sensors in one-wire protocol, connected to PIN3 (DQ) of arduino. I want to send the temperatures measures throught the xbee to another xbee connected to a PC to receive the packet in API MODE. How can i do this? Thank you for your help!

5

Hi, I'm using the 800.15.4 (series 1) and (like many many others) am getting, well... squat and would appreciate any help - at all.

Here's the code I'm using that reads and lights up an led to recognize its at least receiving, then echo's back the character received :

void setup() {
Serial.begin(9600); //initialize serial
pinMode(13, OUTPUT); //set pin 13 as output

digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(500);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);

}

void loop() {
while(Serial.available()){ //is there anything to read?
char getData = Serial.read(); //if yes, read it
digitalWrite(13, HIGH);
delay(250);
Serial.print(getData);
delay(250);
}

digitalWrite(13, LOW);
}

here are the results on x-ctu. Data entered in sequence 1,2,3 etc.. and getting periods back. I was hoping it would look like this 11,22,33 etc.. but no. What am I doing wrong????

Notice how entering 5 and 7 return the same hex value??? good grief.

6

Hi. Just got it working correctly!!!! Yeeeeeeeee - HAAAAAAAAAAAA!!!! SUCCESS!!!!! how sweet it is...

Incredibly my atmega328p was damaged (probably when I tried making a power inverter) - note: if anyone is planning on making a power inverter make absolutely sure you use opto-couplers. The strange thing about the damaged atmega328p is that I had no problem uploading .pde's and turning pins on and off but somehow the RX/TX was damaged.