Arduino+XBeeS2 API Problem

Projects Networking, Protocols, and Devices
1

Hi, I'm trying to send the data in API mode using a pair of Arduino Duemilanove with XBee Pro series 2 equipped with my own code for XBee API frame. I've tested it using X-CTU between the end device and coordinator by assembling package manually. The result of manual input is great without error.

Here is the problem, after uploaded the sketch from Arduino IDE,then, I monitor it through X-CTU. There are packages send out from end device but the coordinator never received a single byte. Even I have tried the same package by assembling it manually.

I have tried to send the package in command mode using Arduino sketch and it worked fine. Now, API mode, I don't really sure what is the problem.

Here is the arduino sketch that I wrote for XBee API mode:

#define frameTypeSize 1
#define frameIDSize 1
#define destAddr64Size sizeof(destAddr64)/sizeof(byte)
#define destAddr16Size sizeof(destAddr16)/sizeof(byte)
#define broadcastSize 1
#define optionSize 1
#define payloadSize sizeof(payload)/sizeof(byte)

byte startDelimeter=0x7E;
byte lengthMSB=(byte)0x00;
byte lengthLSB;
byte frameType=0x10;
byte frameID=0x01;
byte destAddr64[]={0x00,0x13,0xA2,0x00,0x40,0x2D,0xB5,0x23};
byte destAddr16[]={0x00,0x00};
byte broadcast=(byte)0x00;
byte option=(byte)0x00;
byte payload[]={0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01};
byte checksum;

void setup(){
  Serial.begin(115200);
}

void loop(){
  //API Mode
  //Calculate length
  lengthLSB=lengthLSBCalculate();
  //Calculate checksum
  checksum=checksumCalculate();
  //Start delimeter
  Serial.write(startDelimeter);
  //Length of the package
  Serial.write(lengthMSB);
  Serial.write(lengthLSB);
  //Frame type & ID
  Serial.write(frameType);
  Serial.write(frameID);
  //Destination Address
  Serial.write(destAddr64,destAddr64Size);
  Serial.write(destAddr16,destAddr16Size);
  //Broadcast range
  Serial.write(broadcast);
  //Option
  Serial.write(option);
  //Payload
  Serial.write(payload,payloadSize);
  //Checksum
  Serial.write(checksum);
  delay(1000);
}

byte lengthLSBCalculate(){
  return frameTypeSize+frameIDSize+destAddr64Size+destAddr16Size+broadcastSize+optionSize+payloadSize;
}

byte checksumCalculate(){
  unsigned int summation=0;
  for(int i=0;i<destAddr64Size;i++){
    summation+=destAddr64[i];
  }
  for(int i=0;i<destAddr16Size;i++){
    summation+=destAddr16[i];
  }
  for(int i=0;i<payloadSize;i++){
    summation+=payload[i];
  }
  summation=summation+frameType+frameID+broadcast+option;
  summation=(0xFF-(summation))&0xFF;
  return summation;
}

Edited: This is the package sent manually.

Packages sent using the above sketch.

2

Update: Today, I experiment on if I separately connect Arduino and XBee using wires. So, I connect +5V and GND to XBee shield instead of connect the shield to ICSP on Arduino. TX and RX from Arduino to the shield as normal. For the result, in API mode, everything works great.

So, the question is: what is the problem when I connect the shield to Arduino normally?

3

What position are the jumpers in? It's hard to tell from that picture.

4

The position of the jumpers are in XBEE position.