RN41.cpp

00001 #include "RN41.h"
00002 #include <string>
00003 
00004 RN41::RN41(PinName tx, PinName rx) : _RN41(tx, rx){
00005     _baud = 115200;
00006     _RN41.baud(_baud);
00007     _commandMode = false;
00008 }
00009 
00010 //Resets The Device
00011 //Also Exits Command Mode
00012 //Device Must Be Reset After A Config Change To Take Effect
00013 bool RN41::reset(){
00014     enterCommandMode();
00015     sendString("R,1\r\n");
00016     if(getString() == "Reboot!\r\n"){
00017         _commandMode = false;
00018         return true;
00019     }else{
00020         return false;
00021     }
00022 }
00023 
00024 //Sets Device Name
00025 //Maximum 20 characters
00026 bool RN41::setDeviceName(string name){
00027     enterCommandMode();
00028     sendString("SN," + name + "\r\n");
00029     if(getString() == "AOK\r\n"){
00030         reset();
00031         return true;
00032     }else{
00033         return false;
00034     }
00035 }
00036 
00037 //Set Authentication Mode
00038 //Available Modes:
00039 //0 - Open Mode
00040 //1 - SSP Keyboard I/O Mode
00041 //2 - SSP "Just Works" Mode
00042 //4 - Pin Code
00043 //Default Mode: 1
00044 bool RN41::setAuthenticationMode(int authMode){
00045     enterCommandMode();
00046     if(authMode < 0 or authMode > 4 or authMode == 3){
00047         return false;
00048     }
00049     char buf[1];
00050     sprintf(buf,"SA,%d\r\n", authMode);
00051     string msg = buf;
00052     sendString(msg);
00053     if(getString() == "AOK\r\n"){
00054         reset();
00055         return true;
00056     }else{
00057         return false;
00058     }
00059 }
00060 
00061 //Sets Device Mode
00062 //Available Modes:
00063 //0 - Slave Mode
00064 //1 - Master Mode
00065 //2 - Trigger Mode
00066 //3 - Auto-Connect Master Mode
00067 //4 - Auto-Connect DTR Mode
00068 //5 - Auto-Connect Any Mode
00069 //6 - Pairing Mode
00070 //Default Mode: 4
00071 bool RN41::setMode(int mode){
00072     enterCommandMode();
00073     if(mode < 0 or mode > 6){
00074         return false;
00075     }
00076     char buf[1];
00077     sprintf(buf,"SM,%d\r\n", mode);
00078     string msg = buf;
00079     sendString(msg);
00080     if(getString() == "AOK\r\n"){
00081         reset();
00082         return true;
00083     }else{
00084         return false;
00085     }
00086 }
00087 
00088 //Gets Bluetooth Address
00089 //returns the 12 didgite MAC ID
00090 string RN41::getBluetoothAddress(){
00091     enterCommandMode();
00092     sendString("GB\r\n");
00093     string result = getString();
00094     string address = result.substr(0, result.length() - 2);
00095     exitCommandMode();
00096     return address;
00097 }
00098 
00099 //Gets Connection Status
00100 //0,0,0 = Not Connected
00101 //1,0,0 = Connected
00102 bool RN41::getConnectionStatus(){
00103     enterCommandMode();
00104     sendString("GK\r\n");
00105     if(getString() == "1,0,0\r\n"){
00106         exitCommandMode();
00107         return true;
00108     }else{
00109         exitCommandMode();
00110         return false;
00111     }
00112 }
00113 
00114 //Get The Device's Firmware Version
00115 string RN41::getFirmwareVersion(){
00116     enterCommandMode();
00117     sendString("V\r\n");
00118     string version = getString();
00119     exitCommandMode();
00120     return version;
00121 }
00122 
00123 bool RN41::sendMessage(string message, char terminationChar){
00124     if(_commandMode){return false;}
00125     string msg = message + terminationChar;
00126     _RN41.printf("%s", msg);
00127     return true;
00128 }
00129 
00130 string RN41::recieveMessage(char terminationChar){
00131     return getString(terminationChar);
00132     if(_commandMode){return "*ERROR*";}
00133 }
00134 
00135 //Private Functions Below
00136 
00137 //Enter Command Mode
00138 bool RN41::enterCommandMode(){
00139     if(_commandMode == true){
00140         return true;
00141     }
00142     sendString("$$$");
00143     if(getString() == "CMD\r\n"){
00144         _commandMode = true;
00145         return true;
00146     }else{
00147         return false;
00148     }
00149 }
00150 
00151 //Exit Command Mode
00152 bool RN41::exitCommandMode(){
00153     if(_commandMode == false){
00154         return true;
00155     }
00156     sendString("---\r\n");
00157     if(getString() == "END\r\n"){
00158         _commandMode = false;
00159         return true;
00160     }else{
00161         return false;
00162     }
00163 }
00164 
00165 void RN41::sendString(string msg){
00166     _RN41.printf("%s",msg);
00167 }
00168 
00169 bool RN41::readable(){
00170     if(_RN41.readable()){return true;}else{return false;}
00171 }
00172 
00173 string RN41::getString(){
00174     string msg = "";
00175     char prev = ' ';
00176     char curr = ' ';
00177     while(1){
00178         if(_RN41.readable()){
00179             prev = curr;
00180             curr = getChar();
00181             msg += curr;
00182             if(prev=='\r' and curr=='\n'){
00183                 break;
00184             }
00185         }
00186     }
00187     
00188     return msg;
00189 }
00190 
00191 string RN41::getString(char terminationChar){
00192     string msg = "";
00193     char curr = ' ';
00194     while(1){
00195         if(_RN41.readable()){
00196             curr = getChar();
00197             msg += curr;
00198             if(curr == terminationChar){
00199                 break;
00200             }
00201         }
00202     }
00203     return msg;
00204 }
00205 
00206 char RN41::getChar(){
00207     return _RN41.getc();
00208 }