Question

您好我正在开发一个WSN，其中每个终端设备在开始传输之前必须接收来自协调员的呼叫。出于测试目的，我正在使用4 Arduino nano 3.0（在最终配置中我将使用具有M3 cortex cpu的不同微控制器）和四个XBee（具有zb固件的xb24-b）。我无法从协调器向选定的终端设备发送消息，同时我成功地将数据从终端设备传输到协调器。这里是协调器节点上arduino上运行的代码。终端设备通过USB浏览器直接连接到电脑。

   #include <SoftwareSerial.h> 
// creo una porta seriale di tipo software sui pin 2(RX) e 3(TX)
uint8_t rxxbee = 2;
uint8_t txxbee = 3;
SoftwareSerial Serial_xbee(rxxbee,txxbee);


// variable to store the data received
int sensorValue = 0;

// costant values of the frame
const byte startDelimeter = 0x7E;

  // length
const byte MSB_1 = 0x00;
const byte LSB_2 = 0x10;  

  // Frame-specific data
const byte frameType = 0x10;
const byte frameID = 0x0;

  // 64-bit destination address 
const byte MSB_5  = 0x00;
const byte b_6    = 0x13;
const byte b_7    = 0xA2;
const byte b_8    = 0x00;
const byte b_9    = 0x40;
const byte b_10   = 0x86;
const byte b_11   = 0xDB;
const byte LSB_12 = 0xA4;

  // 16-bit destination network address
const byte MSB_13 = 0x0;
const byte LSB_14 = 0x0;

  // broadcast radius
const byte broadcastRadius = 0x0;

  // options
const byte opt = 0x0;


byte spedisci (byte value) {
Serial_xbee.write(value);
Serial.write(value);
return value;
}


void setup()
{
  // starts serial communication
  Serial.begin(9600);
  Serial_xbee.begin(9600);
  pinMode(sensorPin, INPUT);

}

void loop()
{
  // send data through xBee
  spedisci(startDelimeter);
  spedisci(MSB_1);
  spedisci(LSB_2);
  long sum = 0; // accumulate the checksum  
  sum += spedisci(frameType);
  sum += spedisci(frameID);
  sum += spedisci(MSB_5);
  sum += spedisci(b_6);
  sum += spedisci(b_7);
  sum += spedisci(b_8);
  sum += spedisci(b_9);
  sum += spedisci(b_10);
  sum += spedisci(b_11);
  sum += spedisci(LSB_12);
  sum += spedisci(MSB_13);
  sum += spedisci(LSB_14);
  sum += spedisci(broadcastRadius);
  sum += spedisci(opt);
  sum += spedisci(0X10);  // this is the payload[0] byte
  sum += spedisci(0X10);  // this is the payload[1] byte
  spedisci( 0xFF - (sum & 0xFF));
}

有什么建议吗？

谢谢！

协调器api固件为21A7;终端设备api固件是29A7

Answer 1

我认为当使用不是协调器的节点的64位IEEE地址时，需要使用0xFFFE作为16位网络地址。尝试更改代码的这一部分：

// 16-bit destination network address
const byte MSB_13 = 0xFF;
const byte LSB_14 = 0xFE;

当您准备离开Arduino平台时，请查看此开源便携式ANSI C XBee Host Library，以便在API模式下与XBee无线电通信。它可以简化很多软件开发。

从协调器向终端设备发送API tx帧（zigbee + arduino）

1 个答案: