For getting RSSI value from xbee
Dependents: XBeeGetRSSISampleProgram Xbee_s2_RX_versao2
XBeeGetRssi.cpp@7:588a7745cc0e, 2013-08-25 (annotated)
- Committer:
- ATKINZ117
- Date:
- Sun Aug 25 14:08:44 2013 +0000
- Revision:
- 7:588a7745cc0e
- Parent:
- 6:2e725705db90
- Child:
- 9:eb8838ce9d65
improved the source code readability.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ATKINZ117 | 6:2e725705db90 | 1 | /*---------------------------------------------------------- |
ATKINZ117 | 6:2e725705db90 | 2 | 20130824:Todos:improve the performance of this program. |
ATKINZ117 | 6:2e725705db90 | 3 | get only the rssi value. |
ATKINZ117 | 6:2e725705db90 | 4 | |
ATKINZ117 | 6:2e725705db90 | 5 | |
ATKINZ117 | 6:2e725705db90 | 6 | ----------------------------------------------------------*/ |
ATKINZ117 | 6:2e725705db90 | 7 | |
ATKINZ117 | 0:d1ff6ea68ab2 | 8 | #include "XBeeGetRssi.h" |
ATKINZ117 | 0:d1ff6ea68ab2 | 9 | #include "mbed.h" |
ATKINZ117 | 4:16396d9ec459 | 10 | //#include <string.h> |
ATKINZ117 | 0:d1ff6ea68ab2 | 11 | |
ATKINZ117 | 0:d1ff6ea68ab2 | 12 | |
ATKINZ117 | 0:d1ff6ea68ab2 | 13 | XBeeGetRssi::XBeeGetRssi(PinName tx,PinName rx){ |
ATKINZ117 | 0:d1ff6ea68ab2 | 14 | _tx=tx; |
ATKINZ117 | 0:d1ff6ea68ab2 | 15 | _rx=rx; |
ATKINZ117 | 0:d1ff6ea68ab2 | 16 | } |
ATKINZ117 | 0:d1ff6ea68ab2 | 17 | |
ATKINZ117 | 6:2e725705db90 | 18 | char XBeeGetRssi::getRssi(int n){ |
ATKINZ117 | 4:16396d9ec459 | 19 | //int judge_counter=0; |
ATKINZ117 | 4:16396d9ec459 | 20 | int judge_counter=0; |
ATKINZ117 | 4:16396d9ec459 | 21 | int rssi_counter=0; |
ATKINZ117 | 7:588a7745cc0e | 22 | //int xbee_message_counter=0; |
ATKINZ117 | 4:16396d9ec459 | 23 | |
ATKINZ117 | 0:d1ff6ea68ab2 | 24 | Serial pc(USBTX,USBRX); //for debugging. |
ATKINZ117 | 0:d1ff6ea68ab2 | 25 | Serial _MyXbee(_tx,_rx); |
ATKINZ117 | 0:d1ff6ea68ab2 | 26 | |
ATKINZ117 | 6:2e725705db90 | 27 | for(int i=0;i<20;i++){ |
ATKINZ117 | 6:2e725705db90 | 28 | _rssi[i]='^'; //initial value |
ATKINZ117 | 6:2e725705db90 | 29 | } |
ATKINZ117 | 1:8cb27d9eec8e | 30 | |
ATKINZ117 | 2:befae843036e | 31 | _MyXbee.putc('T'); |
ATKINZ117 | 0:d1ff6ea68ab2 | 32 | |
ATKINZ117 | 4:16396d9ec459 | 33 | wait(1.0); |
ATKINZ117 | 4:16396d9ec459 | 34 | _MyXbee.putc('+'); |
ATKINZ117 | 6:2e725705db90 | 35 | wait_ms(1); |
ATKINZ117 | 4:16396d9ec459 | 36 | _MyXbee.putc('+'); |
ATKINZ117 | 6:2e725705db90 | 37 | wait_ms(1); |
ATKINZ117 | 4:16396d9ec459 | 38 | _MyXbee.putc('+'); |
ATKINZ117 | 6:2e725705db90 | 39 | wait_ms(1); |
ATKINZ117 | 7:588a7745cc0e | 40 | |
ATKINZ117 | 4:16396d9ec459 | 41 | judge_counter=0; //reset counter for later use |
ATKINZ117 | 7:588a7745cc0e | 42 | |
ATKINZ117 | 4:16396d9ec459 | 43 | wait(1.0); |
ATKINZ117 | 4:16396d9ec459 | 44 | judge_counter=0; |
ATKINZ117 | 4:16396d9ec459 | 45 | |
ATKINZ117 | 4:16396d9ec459 | 46 | _MyXbee.putc('A'); |
ATKINZ117 | 6:2e725705db90 | 47 | wait_ms(5); |
ATKINZ117 | 4:16396d9ec459 | 48 | _MyXbee.putc('T'); |
ATKINZ117 | 6:2e725705db90 | 49 | wait_ms(10); |
ATKINZ117 | 4:16396d9ec459 | 50 | _MyXbee.putc('D'); |
ATKINZ117 | 6:2e725705db90 | 51 | wait_ms(10); |
ATKINZ117 | 4:16396d9ec459 | 52 | _MyXbee.putc('B'); |
ATKINZ117 | 6:2e725705db90 | 53 | wait_ms(10); |
ATKINZ117 | 4:16396d9ec459 | 54 | _MyXbee.putc('\r'); |
ATKINZ117 | 6:2e725705db90 | 55 | wait_ms(10); |
ATKINZ117 | 4:16396d9ec459 | 56 | |
ATKINZ117 | 5:790675fae748 | 57 | while(_rssi[judge_counter++]!='\0'){ |
ATKINZ117 | 4:16396d9ec459 | 58 | while(_MyXbee.readable()){ |
ATKINZ117 | 4:16396d9ec459 | 59 | _rssi[rssi_counter++]=_MyXbee.getc(); |
ATKINZ117 | 4:16396d9ec459 | 60 | } |
ATKINZ117 | 7:588a7745cc0e | 61 | } |
ATKINZ117 | 4:16396d9ec459 | 62 | |
ATKINZ117 | 4:16396d9ec459 | 63 | _MyXbee.putc('A'); |
ATKINZ117 | 6:2e725705db90 | 64 | wait_ms(5); |
ATKINZ117 | 4:16396d9ec459 | 65 | _MyXbee.putc('T'); |
ATKINZ117 | 6:2e725705db90 | 66 | wait_ms(5); |
ATKINZ117 | 4:16396d9ec459 | 67 | _MyXbee.putc('C'); |
ATKINZ117 | 6:2e725705db90 | 68 | wait_ms(5); |
ATKINZ117 | 4:16396d9ec459 | 69 | _MyXbee.putc('N'); |
ATKINZ117 | 6:2e725705db90 | 70 | wait_ms(5); |
ATKINZ117 | 4:16396d9ec459 | 71 | _MyXbee.putc('\r'); |
ATKINZ117 | 4:16396d9ec459 | 72 | |
ATKINZ117 | 4:16396d9ec459 | 73 | return _rssi[n]; |
ATKINZ117 | 4:16396d9ec459 | 74 | |
ATKINZ117 | 4:16396d9ec459 | 75 | } |