how to store data of each customer in eeprom memeory

Projects Programming
1

i have written the following code there are no errors but will it be possible to store each customers data in eeprom memory

will message sending take place for each customer

here is my code

#include <EEPROM.h>
#include "SoftwareSerial.h"
SoftwareSerial rfidSerial(3, 2);
SoftwareSerial SIM900( 7 , 8 );

int aBAL=1000;
int bBAL=1500;
int cBAL=2000;
const int amount1=50;
const int amount2=100;
const int amount3=150;

String a;
const int ledPin = 13;

void setup() {
pinMode (6, OUTPUT);

pinMode (A0, OUTPUT);
pinMode (A1, OUTPUT);
pinMode (A2, OUTPUT);

pinMode (4, OUTPUT);
pinMode (5, OUTPUT);
digitalWrite (4, HIGH);
digitalWrite (5, HIGH);
digitalWrite (6, LOW);
Serial.begin(9600);
pinMode(ledPin, OUTPUT);

SIM900. begin (19200 );
SIM900. print ("AT+CMGF=1\r" );

rfidSerial.begin(9600);
digitalWrite (A2, HIGH);
delay(1000);
digitalWrite (A2, LOW);
Serial.println("WAITNG FOR A customers tag ......");
}

void loop() {

digitalWrite (A2, HIGH);
delay(1000);
digitalWrite (A2, LOW);

digitalWrite(A0, HIGH);
while(rfidSerial.available()) {

a= rfidSerial.readString();// read the incoming data as string
rfidSerial.print("customer RFID read ");
rfidSerial.print(a);

delay(1000);
digitalWrite(ledPin, HIGH);
delay(1000);
SIM900. println ( "AT + CMGS = "8433xxxxx1""); // CHANGE NUMBER TO BE MESSAGED HERE
delay(1000);
//--------------------------------------------______________________________________________
if(a=="03908807\r\n"){
Serial.println("THIS IS A");
aBAL=aBAL-amount1;
if(aBAL>=amount1){
digitalWrite(A0, LOW);
digitalWrite(A1, HIGH);
digitalWrite (6, HIGH);
delay(1000);

digitalWrite(4, LOW);

delay(750);
digitalWrite(4, HIGH);

delay(2000);
//}

SIM900. print ( "Hello, THANK YOU a, FOR USING OUR PRODUCTS YOUR BALANCE IS Rs.");
SIM900.print(aBAL);
}

else{
//void closeGATE();
digitalWrite(A1, LOW);
digitalWrite (6, LOW);
digitalWrite(A0, HIGH);
delay(1000);
digitalWrite(5, LOW);
delay(750);
digitalWrite(5, HIGH);

delay(2000);
//-----------
SIM900. print ( "Hello, THANK YOU a, FOR USING OUR GOODS BUT YOUR BALANCE IS TOO LOW PLEASE RECHARGE! ");

}
delay ( 1000);
SIM900. println (( char ) 26 );
delay ( 1000);
SIM900. println ();
digitalWrite(ledPin, LOW);
}

//--------------------------------------------____________________________________________________________________________________________
else if(a=="13703425\r\n"){
Serial.println("THIS IS B");
bBAL=bBAL-amount3;
if(bBAL>=amount3){
//void openGATE();
digitalWrite(A0, LOW);
digitalWrite(A1, HIGH);digitalWrite (6, HIGH);
delay(1000);
digitalWrite(4, LOW);

delay(750);
digitalWrite(4, HIGH);
delay(1000);
digitalWrite(ledPin, HIGH);
delay(1000);
SIM900. println ( "AT + CMGS = "8433xxxxx5""); // CHANGE NUMBER TO BE MESSAGED HERE
delay(1000);
delay(2000);
//--------------------
SIM900. print ( "Hello, THANK YOU b, FOR USING OUR GOODS YOUR BALANCE IS Rs.");
SIM900.print(bBAL);
}

else{//void closeGATE();
digitalWrite(A1, LOW);
digitalWrite(A0, HIGH);
digitalWrite (6, LOW);
delay(1000);
digitalWrite(5, LOW);

delay(750);
digitalWrite(5, HIGH);

delay(2000);

//-------------------

SIM900. print ( "Hello, THANK YOU b, FOR USING OUR GOODS BUT YOUR BALANCE IS TOO LOW PLEASE RECHARGE! ");

}
delay ( 1000);
SIM900. println (( char ) 26 );
delay ( 1000);
SIM900. println ();
digitalWrite(ledPin, LOW);
}

//-------------------------------------------________________________________________________________________________

else if(a=="03908806\r\n"){
Serial.println("THIS IS C");
cBAL=cBAL-amount2;
if(cBAL>=50){
//void openGATE();
digitalWrite(A0, LOW);
digitalWrite(A1, HIGH); digitalWrite (6, HIGH);
delay(1000);
digitalWrite(4, LOW);

delay(750);
digitalWrite(4, HIGH);
delay(1000);
digitalWrite(ledPin, HIGH);
delay(1000);
SIM900. println ( "AT + CMGS = "8433xxxxx3""); // CHANGE NUMBER TO BE MESSAGED HERE
delay(1000);
delay(2000);
//---------------
SIM900. print ( "Hello, THANK YOU c, FOR USING OUR GOODS YOUR BALANCE IS Rs.");
SIM900.print(cBAL);
}

else{
//void closeGATE();
digitalWrite(A1, LOW);
digitalWrite(A0, HIGH);
digitalWrite (6, LOW);
delay(1000);
digitalWrite(5, LOW);

delay(750);
digitalWrite(5, HIGH);

delay(2000);
//---------------
SIM900. print ( "Hello, THANK YOU c, FOR USING OUR GOODS YOUR BALANCE IS TOO LOW PLEASE RECHARGE! ");

}

//-------------------
}
//-------------------------------------------

else{ // WRONG CARD OR NO CARD
digitalWrite(A0, HIGH);
delay(1000);
digitalWrite(A0, LOW);
delay(2000);

}

delay ( 1000);
SIM900. println (( char ) 26 );
delay ( 1000);
SIM900. println ();
digitalWrite(ledPin, LOW);
delay(5000);
// void closeGATE();
digitalWrite(A1, LOW);
digitalWrite(A0, HIGH); digitalWrite (6, LOW);
delay(1000);
digitalWrite(5, LOW);

delay(750);
digitalWrite(5, HIGH);

delay(2000);
}

}

2

I added the code tags to your last post, now it's your turn.

3 
String a;

Global variables should NOT have one letter names. That simply leads ue to ask WTF?. If you can't figure out what you are storing in the variable, and use an appropriate name, completing the rest of the project seems unlikely.

4

All as above - then read about structs, arrays, and functions.
Your code will be 75% shorter and more readable - and easier to maintain!

Once you have the program flow, and data structure organised, adding EEPROM or other storage will be trivial.

Oh, and use

 code tags in your post!
5

#include "SoftwareSerial.h"
SoftwareSerial rfidSerial(3, 2);
SoftwareSerial SIM900( 7 , 8 );

int aBAL=1000;
int bBAL=1500;
int cBAL=2000;
const int amount1=50;
const int amount2=100;
const int amount3=150;

String a;
const int ledPin = 13;

void setup() {
pinMode (6, OUTPUT);

pinMode (A0, OUTPUT);
pinMode (A1, OUTPUT);
pinMode (A2, OUTPUT);

pinMode (4, OUTPUT);
pinMode (5, OUTPUT);
digitalWrite (4, HIGH);
digitalWrite (5, HIGH);
digitalWrite (6, LOW);
Serial.begin(9600);
pinMode(ledPin, OUTPUT);

SIM900. begin (19200 );
Serial. print (F("AT+CMGF=1\r" ));

rfidSerial.begin(9600);
digitalWrite (A2, HIGH);
delay(1000);
digitalWrite (A2, LOW);
Serial. println(F("WAITNG FOR A customers numbers entry ......"));
}

void loop() {

digitalWrite (A2, HIGH);
delay(1000);
digitalWrite (A2, LOW);

digitalWrite(A0, HIGH);
while(rfidSerial.available()) {

a= rfidSerial.readString();// read the incoming data as string
rfidSerial.print("customer RFID read ");
rfidSerial.print(a);

delay(1000);
digitalWrite(ledPin, HIGH);
delay(1000);
SIM900. println ( "AT + CMGS = "8433xxxxx1""); // CHANGE NUMBER TO BE MESSAGED HERE
delay(1000);
//--------------------------------------------______________________________________________
if(a=="03908807\r\n"){
Serial.println("THIS IS A");
aBAL=aBAL-amount1;
if(aBAL>=amount1){
digitalWrite(A0, LOW);
digitalWrite(A1, HIGH);
digitalWrite (6, HIGH);
delay(1000);

digitalWrite(4, LOW);

delay(750);
digitalWrite(4, HIGH);

delay(2000);
//}

SIM900. print ( "Hello, THANK YOU a, FOR USING OUR PRODUCTS YOUR BALANCE IS Rs.");
SIM900.print(aBAL);
}

else{
//void closeGATE();
digitalWrite(A1, LOW);
digitalWrite (6, LOW);
digitalWrite(A0, HIGH);
delay(1000);
digitalWrite(5, LOW);
delay(750);
digitalWrite(5, HIGH);

delay(2000);
//-----------
SIM900. print ( "Hello, THANK YOU a, FOR USING OUR GOODS BUT YOUR BALANCE IS TOO LOW PLEASE RECHARGE! ");

}
delay ( 1000);
SIM900. println (( char ) 26 );
delay ( 1000);
SIM900. println ();
digitalWrite(ledPin, LOW);
}

//--------------------------------------------____________________________________________________________________________________________
else if(a=="13703425\r\n"){
Serial.println("THIS IS B");
bBAL=bBAL-amount3;
if(bBAL>=amount3){
//void openGATE();
digitalWrite(A0, LOW);
digitalWrite(A1, HIGH);digitalWrite (6, HIGH);
delay(1000);
digitalWrite(4, LOW);

delay(750);
digitalWrite(4, HIGH);
delay(1000);
digitalWrite(ledPin, HIGH);
delay(1000);
SIM900. println ( "AT + CMGS = "8433xxxxx5""); // CHANGE NUMBER TO BE MESSAGED HERE
delay(1000);
delay(2000);
//--------------------
SIM900. print ( "Hello, THANK YOU b, FOR USING OUR GOODS YOUR BALANCE IS Rs.");
SIM900.print(bBAL);
}

else{//void closeGATE();
digitalWrite(A1, LOW);
digitalWrite(A0, HIGH);
digitalWrite (6, LOW);
delay(1000);
digitalWrite(5, LOW);

delay(750);
digitalWrite(5, HIGH);

delay(2000);

//-------------------

SIM900. print ( "Hello, THANK YOU b, FOR USING OUR GOODS BUT YOUR BALANCE IS TOO LOW PLEASE RECHARGE! ");

}
delay ( 1000);
SIM900. println (( char ) 26 );
delay ( 1000);
SIM900. println ();
digitalWrite(ledPin, LOW);
}

//-------------------------------------------________________________________________________________________________

else if(a=="03908806\r\n"){
Serial.println("THIS IS C");
cBAL=cBAL-amount2;
if(cBAL>=50){
//void openGATE();
digitalWrite(A0, LOW);
digitalWrite(A1, HIGH); digitalWrite (6, HIGH);
delay(1000);
digitalWrite(4, LOW);

delay(750);
digitalWrite(4, HIGH);
delay(1000);
digitalWrite(ledPin, HIGH);
delay(1000);
SIM900. println ( "AT + CMGS = "8433xxxxx3""); // CHANGE NUMBER TO BE MESSAGED HERE
delay(1000);
delay(2000);
//---------------
SIM900. print ( "Hello, THANK YOU c, FOR USING OUR GOODS YOUR BALANCE IS Rs.");
SIM900.print(cBAL);
}

else{
//void closeGATE();
digitalWrite(A1, LOW);
digitalWrite(A0, HIGH);
digitalWrite (6, LOW);
delay(1000);
digitalWrite(5, LOW);

delay(750);
digitalWrite(5, HIGH);

delay(2000);
//---------------
SIM900. print ( "Hello, THANK YOU c, FOR USING OUR GOODS YOUR BALANCE IS TOO LOW PLEASE RECHARGE! ");

}

//-------------------
}
//-------------------------------------------

else{ // WRONG CARD OR NO CARD
digitalWrite(A0, HIGH);
delay(1000);
digitalWrite(A0, LOW);
delay(2000);

}

delay ( 1000);
SIM900. println (( char ) 26 );
delay ( 1000);
SIM900. println ();
digitalWrite(ledPin, LOW);
delay(5000);
// void closeGATE();
digitalWrite(A1, LOW);
digitalWrite(A0, HIGH); digitalWrite (6, LOW);
delay(1000);
digitalWrite(5, LOW);

delay(750);
digitalWrite(5, HIGH);

delay(2000);
}

}

6

Still not got the hang of code tags, huh?

And a new ID?
It suits you.

7

AWOL:
Still not got the hang of code tags, huh?

And a new ID?
It suits you.

Still not got the hang of loops, structs or arrays either...?
We try hardest to help those that help themselves.
Just 'try' then we can see you're making an effort to learn.