Merge pull request #9 from cristiansteib/devoloping

Devoloping

README.md

@@ -23,6 +23,28 @@ Arduino Uno  |   Sim800l   |    Notes
 GND | GND | 
 
 
+## Methods and functions
+
+Name|Return|Notes
+:-------|:-------:|:-----------------------------------------------:|
+begin()|None|Initialize the library
+reset()|None|Reset the module,and wait to Sms Ready.
+sendSms(number,text)|true or false|parameters must be Strings.
+readSms(index)|String|index is the position of the sms in the prefered memory storage
+getNumberSms(index)|String|returns the number of the sms.
+delAllSms()|true or false|Delete all sms
+answerCall()|true or false|
+callNumber(number)|None|
+hangoffCall()|true or false|
+getCallStatus()|uint8_t|Return the call status, 0=ready,2=Unknown(),3=Ringing,4=Call in progress
+setPhoneFunctionality()|None|Set at to full functionality 
+activateBearerProfile()|None|
+deactivateBearerProfile()|None|
+RTCtime(int *day,int *month, int *year,int *hour,int *minute, int *second)|None| Parameters must be reference ex: &day
+dateNet()|String|Return date time GSM
+updateRtc(utc)|true or false|Return if the rtc was update with date time GSM. 
+____________________________________________________________________________________
+
 You can regulate the voltage to the desired with this, is not the best,
 but for start it's easy.
 

Sim800l.cpp

@@ -40,7 +40,7 @@ void Sim800l::begin(){
   #if (LED) 
     pinMode(OUTPUT,LED_PIN);
   #endif
-  _buffer.reserve(120); //reserve memory to prevent intern fragmention
+  _buffer.reserve(255); //reserve memory to prevent intern fragmention
 }
 
 
@@ -209,9 +209,15 @@ bool Sim800l::sendSms(char* number,char* text){
 
 String Sim800l::getNumberSms(uint8_t index){
   _buffer=readSms(index);
-  int _idx1=_buffer.indexOf("+CMGR:");
-  _idx1=_buffer.indexOf("\",\"",_idx1+1);
-  return _buffer.substring(_idx1+3,_buffer.indexOf("\",\"",_idx1+4));
+  Serial.println(_buffer.length());
+  if (_buffer.length() > 10) //avoid empty sms
+  {
+    uint8_t _idx1=_buffer.indexOf("+CMGR:");
+    _idx1=_buffer.indexOf("\",\"",_idx1+1);
+    return _buffer.substring(_idx1+3,_buffer.indexOf("\",\"",_idx1+4));
+  }else{
+    return "";
+  }
 }
 
 
@@ -222,8 +228,12 @@ String Sim800l::readSms(uint8_t index){
     SIM.print (F("AT+CMGR="));
     SIM.print (index);
     SIM.print("\r");
-    return _readSerial();
-  }
+    _buffer=_readSerial();
+    if (_buffer.indexOf("CMGR:")!=-1){
+      return _buffer;
+    }
+    else return "";    
+    }
   else
     return "";
 }

examples/readSmsAndFilterNumber/readSmsAndFIlterNumber.ino

@@ -94,4 +94,5 @@ void loop(){
 
 
         }
+    }