ZOOM speaker - covid19 response help for elderly peoples

/*
DTMF_SEND v 0.921/20171130 - a-gsmII 2.105/b-gsmgnss 2.105 send DTMF example utility
COPYRIGHT (c) 2014-2017 Dragos Iosub / R&D Software Solutions srl

******************************IMPORTANT NOTICE*******************************************
"agsmII_basic_lbr.h", "agsmII_DTMF_lbr.ino" and "agsmII_basic_lbr.h", "agsmII_DTMF_lbr.ino" 
or,
"bgsmgnss_basic_lbr.h", "bgsmgnss_DTMF_lbr.ino" and "bgsmgnss_basic_lbr.h", "bgsmgnss_DTMF_lbr.ino" 
ARE REQUIERED IN ORDER TO RUN THIS EXAMPLE!!!!!!!!!!!!!!!!!!!!

Download the "a-gsmII kickstart for Arduino"/"b-gsmgnss kickstart for Arduino" from here:
https://itbrainpower.net/downloads
Uncompress the archive and copy the files mentined above in the folder 
where is this utility, then you can compile this code. 

You may want to modify the variables found at lines 45==>49 (use the same values used in DTMF RECEIVE) 
*******************************END of NOTICE*********************************************

You are legaly entitled to use this SOFTWARE ONLY IN CONJUNCTION WITH a-gsmII/b-gsmgnss DEVICES USAGE. Modifications, derivates and redistribution 
of this software must include unmodified this COPYRIGHT NOTICE. You can redistribute this SOFTWARE and/or modify it under the terms 
of this COPYRIGHT NOTICE. Any other usage may be permited only after written notice of Dragos Iosub / R&D Software Solutions srl.

This SOFTWARE is distributed is provide "AS IS" in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied 
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Dragos Iosub, Bucharest 2017.
http://itbrainpower.net
*/
/*
edit C:\Program Files\Arduino\libraries\SoftwareSerial\SoftwareSerial.h 
In order to make the Arduino serial communication (especially for Arduino Uno) with a-gsmII/b-gsmgnss shield reliable you must
comment at line 42 
  #define _SS_MAX_RX_BUFF 64 ( will look like: //#define _SS_MAX_RX_BUFF 64 )
and add at next line 
  #define _SS_MAX_RX_BUFF 128
You just increased increase the RX buffer size speed for UNO and other snails...
*/

//next 2 definition: leave them commented for standard conectivity over Software serial 
//#define usejLader						//un-comment this if you use micro and nano GSM 3G adapter for ArduinoNano --Do not use it with a-gsmII/b-gsmgnss!!!!
//#define HARDWARESERIAL 				//remove comment to use Serial1 for communication on AT MEGA 2560...DUE.. 

//#define atDebug //uncomment this to debug serial communication with a-gsmII/b-gsmgnss

int DTMFlenght=100;		//DTMF lenght in miliseconds - 90-100ms best value for manual
int DTMFpause=100;		//pause lenght between DTMF in miliseconds - 90-100ms best value for manual
//change next line to fit your destination number!
char destinationNumber[]="0316301088";		//usually phone number with International prefix eg. *40 for Romania !!! SE INTRODUCE NUMARUL DE TELEFON, FUNCTIONEAZA SI FARA CODUL TARI
char message[]="6218485444##***";			//last 3 chars -*** are used as terminator in DTMF_RECEIVE (take a look at DTMF_RECEIVE code) !!! SE INTRODUCE ID-ul INTALNIRII


/*do not change under this line! Insteed, make one copy for playing with.*/
#define powerPIN		7//Arduino Digital pin used to power up / power down the modem
#define resetPIN		6//Arduino Digital pin used to reset the modem 
#define statusPIN		5//Arduino Digital pin used to monitor if modem is powered 

#if (ARDUINO >= 100)
  #include "Arduino.h"
	#if !defined(HARDWARESERIAL)
		#include <SoftwareSerial.h>
	#endif
#else
  #include "WProgram.h"
	#if !defined(HARDWARESERIAL)
		#include <NewSoftSerial.h>
	#endif
#endif

#if defined(HARDWARESERIAL)
    #define BUFFDSIZE 1024
#else
	#if defined(__AVR_ATmega1280__) /*AT MEGA ADK*/|| defined(__AVR_ATmega2560__) /*AT MEGA 2560*/|| defined(__AVR_ATmega32U4__) /*LEONARDO*/
		SoftwareSerial agsmSerial(10,3);  //RX==>10,TX soft==>3...read 
		#define BUFFDSIZE 1024
	#else/*UNO*/
		#define UNO_MODE  //Arduino UNO
		#define BUFFDSIZE 200 //240
		#if defined usejLader
			SoftwareSerial agsmSerial(3, 2);  //RX==>3 ,TX soft==>2
		#else
			SoftwareSerial agsmSerial(2, 3);  //RX==>2 ,TX soft==>3
		#endif
	#endif
#endif


#include "agsmII_DTMF_lbr.h"

#define printDebugLN(x){Serial.println(x);}

int state=0, i=0, powerState = 0; 
char ch;
char buffd[256];
//char IMEI[18];
unsigned long offsetTime;
int totalChars = 0;
int	ready4SMS = 0; 
int	ready4Voice = 0;
char readBuffer[200];

void setup(){
	agsmSerial.begin(9600);
	Serial.begin(57600);
	clearagsmSerial();
	clearSerial();
	delay(10);

	modemHWSetup();							//configure Arduino IN and OUT to be used with modem
	
	Serial.flush();
	agsmSerial.flush();
	delay(1000);
	Serial.println(F("a-gsmII/b-gsmgnss DTMF SEND example"));
	Serial.flush();

	if(strlen(destinationNumber)<1){
	    Serial.print(F("destinationNumber not initialized. Edit DTMF_SEND_SS.ino and set the destinationNumber(line 38) with your phone number.\r\n\r\nNow the program will stop."));
	    delay(1000);
	    exit(0);
	}

	Serial.println(F("seat back and relax until a-gsmII/b-gsmgnss is ready"));
	delay(100);

	powerOnModem();

	clearBUFFD();
	while(strlen(buffd)<1){
		getIMEI();
		delay(500);
	}

	ready4SMS = 0; 
	ready4Voice = 0;

	Serial.println(F("a-gsmII/b-gsmgnss ready.. let's run the example"));
	Serial.print(F("a-gsmII/b-gsmgnss IMEI: ")); Serial.flush();
	Serial.println(buffd); Serial.flush();
	//setAUDIOchannel(20);
	delay(1000);
}

void loop(){
  //char readFileBuffer[128];
  int callStatus;
  int res;
  int count=0;
  
  switch(state){
    case 0://check modem status
      if(!getModemState()) restartMODEM();
      else
        state++;
      i=0;
      res= 0;
      while(res != 1){
        res = sendATcommand("","OK","ERROR",2);
        if (res != 1) {
          if(i++ >= 10) {
            printDebugLN(F("AT err...restarting"));
            restartMODEM();
          }
        }
        delay(500);
      }
      sendATcommand("+IPR=0;&w","OK","ERROR",2);    
      delay(2000);    
    break;
    
    case 1:
      clearBUFFD();
      //next some init strings...
      aGsmCMD("AT+QIMODE=0",200);      
      aGsmCMD("AT+QINDI=0",200);      
      aGsmCMD("AT+QIMUX=0",200);      
      aGsmCMD("AT+QIDNSIP=0",200);
      offsetTime=0; 
      clearBUFFD();
      state++;
      break;
          
    case 2:    
      printDebugLN(F("try CPIN..."));
      if(!offsetTime) offsetTime = millis();
      if ((millis() - offsetTime) > 20000) restartMODEM();
      if(sendATcommand("+CPIN?","READY")==1){
        offsetTime=0; state++;
        printDebugLN(F("READY"));
      }else{}
      clearagsmSerial(); delay(100);
	  offsetTime = millis();
      break;
  
    case 3:    
      if(!offsetTime) offsetTime = millis();
      if ((millis() - offsetTime) > 30000) restartMODEM(); 
      
      printDebugLN(F("Query GSM registration?"));
	  res = registration(GSM);
	  if(res==1){
        offsetTime=0; state++;
        printDebugLN(F("READY, HOME NETWORK"));
      }else if(res==5){
        offsetTime=0; state++;
        printDebugLN(F("READY, ROAMING"));
      }else{
		Serial.print(F("."));
      }
	  offsetTime = millis();
    break;

    case 4: //init SIM/MODEM   
      printDebugLN(F("Query State of Initialization"));
      if(sendATcommand("+QINISTAT","3")==1){
        offsetTime=0; state++;
        printDebugLN(F("READY"));
      }else{Serial.print(F(".")); delay(100);}
      clearagsmSerial(); delay(100);
	  offsetTime = millis();
    break; 	
    
    case 5://Modem full initialised?
      if(!offsetTime) offsetTime = millis();
      if ((millis() - offsetTime) > 5000) restartMODEM();
      clearBUFFD();
      clearagsmSerial();


      printDebugLN("It is Modem full initialised?"); delay(100);
      setupMODEMforDTMFSusage();
      delay(10000);
      offsetTime = millis();
      state++;
    break;

    
    case 6://let's send DTMF to the destination receipment
      if(!offsetTime) offsetTime = millis();
      if ((millis() - offsetTime) > 5000) restartMODEM(); // 

      
      printDebugLN(F("Let's dial the receipment!")); 
      //memset(readBuffer,0x00,sizeof(readBuffer));
      //sprintf(readBuffer,"D%s;",destinationNumber);//prepare dial command
      //printDebugLN(readBuffer); 
      
      printDebugLN(F("Waiting for remote to answer!"));      

      callStatus =-2;//go into loop and force dial
      while(callStatus!=0) {
          if(callStatus < 0) {//no connection, BUSY, ERROR 
            hangup();
            delay(2000);
            dial(destinationNumber);
          }
          delay(500);
          callStatus = getcallStatus();
      }
      printDebugLN(F("Answer...wait a while")); 
      delay(2000);//wait a little bit
  
      while(getcallStatus()==0){//send DTMF, 20sec pause, until line is no connected 
		sendDTMF(message);
		printDebugLN(F("DTMF send, repeat in 5sec while hangup is detected")); // AICI AM MODIFICAT TIMPUL DE LA 5 SECUNDE la 60 secunde (robotul nu termina prima fraza, trebuia putin mai mult timp)
		delay(60000);
      }
      printDebugLN(F("hangup detected")); 

      delay(10000);
      
      printDebugLN(F("That's all folks!")); 

      delay(10000);
      offsetTime = millis();
      state++;
    break;
    
    default:
      //restartMODEM();
      delay(1000000);
      //state=0;
    break;
  }
  
}