Diff: XBeeGetRssi.cpp

Revision:

3:602329ee6a01

Parent:

2:befae843036e

--- a/XBeeGetRssi.cpp	Sat Aug 17 03:51:52 2013 +0000
+++ b/XBeeGetRssi.cpp	Sun Aug 18 08:42:24 2013 +0000
@@ -8,27 +8,76 @@
     _rx=rx;
 }
 
-int XBeeGetRssi::get(){
-    //int message_counter=0;
-    //int rssi_counter=0;
+char* XBeeGetRssi::get(){
+
+    //------------variables------------------------
+    int message_counter=0; //for containing message from xbee.
+    int temp_counter=1; //for judging '/r'
     Serial pc(USBTX,USBRX); //for debugging.
     Serial _MyXbee(_tx,_rx);
     
-    _rssi=0; //initial value
+    _rssi[0]='Z'; //initial value
+    _rssi[1]='Z';
+    //-------------------------------------------
     
-    
+    //----sending message to another Xbee for getting RSSI value.------------
     pc.printf("At the first of xbee class.\r\n");
     _MyXbee.putc('T');
     if(_MyXbee.readable()){
         _MyXbee.getc();
     }else{
-        pc.printf("couldn't get return message.");
+        pc.printf("couldn't get return message.\r\n");
     }
     wait(1.0);
-    _MyXbee.printf("+++"); //entering AT command mode.
+    //--------------------------------------------
+    
+    //_MyXbee.printf("+++"); //entering AT command mode.
+    //-----------entering AT Mode---------------
+    for(int i=0;i<3;i++){
+        _MyXbee.putc('+');
+        wait_ms(100);
+    }
     pc.printf("sent +++\r\n");
-    wait(1.0);
-    //while(_rssi[rssi_counter]!='\0'){
+    wait(0.9);
+    //------------------------------------------------
+    
+    //-------------------send ATDB command-----------
+    _MyXbee.putc('A');
+    wait_ms(100);
+    _MyXbee.putc('T');
+    wait_ms(100);
+    _MyXbee.putc('D');
+    wait_ms(100);
+    _MyXbee.putc('B');
+    wait_ms(100);
+    _MyXbee.putc('\r');
+    wait_ms(100);
+    pc.printf("sent ATDB \r\n");
+    //-----------------------------------------------
+    
+    //------------get RSSI value--------------------
+    while(_rssi[temp_counter-1]!='\r'){
+        if(_MyXbee.readable()){
+            _rssi[message_counter]=_MyXbee.getc();
+            wait_ms(100);
+            message_counter++;
+            temp_counter++;
+            pc.printf("in the while loop.\r\n");
+        }else{
+            pc.printf("xbee isn't available.\r\n");
+            //-----------entering AT Mode---------------
+            for(int i=0;i<3;i++){
+                _MyXbee.putc('+');
+                wait_ms(100);
+            }
+            pc.printf("sent +++\r\n");
+            wait(0.9);
+            //------------------------------------------------
+        }
+    }
+    //-----------------------------------------------
+    
+    /*while(_rssi[rssi_counter]!='\0'){
         if(_MyXbee.readable()){
             _MyXbee.printf("ATDB\r"); //quering rssi value
             _rssi=_MyXbee.getc();
@@ -40,9 +89,23 @@
             //wait(1.0);
             //pc.printf("+++ again.\r\n");
         }
-    //}_rssi[rssi_counter]='\0'; //contain rssi value to _rssi[]
+    }_rssi[rssi_counter]='\0'; //contain rssi value to _rssi[]
+    ----------the code block above is previous ver-----------------*/
+    
     pc.printf("Here is class end!\r\n");
-    _MyXbee.printf("ATCN\r");
+    //-----------send ATCN command-------------
+    //_MyXbee.printf("ATCN\r");
+    _MyXbee.putc('A');
+    wait_ms(100);
+    _MyXbee.putc('T');
+    wait_ms(100);
+    _MyXbee.putc('C');
+    wait_ms(100);
+    _MyXbee.putc('N');
+    wait_ms(100);
+    _MyXbee.putc('\r');
+    wait_ms(100);
+    //-----------------------------------------
     
     return _rssi;