File content as of revision 11:1d7021c0739d:

#include "mbed.h"
#include "lib.h"

Serial mag_card(p13, p14);
Serial android(USBTX, USBRX);
FPScanner fp(p9, p10);
uLCD_4DGL lcd(p28, p27, p30);
PwmOut speaker(p21);

// Flash Memory
SPI spi(p5, p6, p7); // MOSI, MISO, CLK
DigitalOut cs(p20);  // Chip Select

// hash table
const int MAX_ENTRIES = 100;
HASH_RECORD records[MAX_ENTRIES];
int record_index = 0;

enum STATE {STANDBY, ENROLL, AUTH, FP_ENROLL, FP_AUTH, MC_ENROLL, MC_AUTH, FACE_ENROLL, FACE_AUTH, SPEECH_ENROLL,
            ENROLL_SUCCESS, AUTH_SUCCESS, ENROLL_FAIL, AUTH_FAIL, UNLOCK
           };

char user_id[4];
char mag_card_data[250];
int mc_bytes = 0;
int temp;
int temp1;

int main()
{
    STATE current_state = STANDBY;
    while (true) {
        switch (current_state) {
            case STANDBY:
                greeting(&lcd);
                int input = read_keypad();
                while (input != 10 && input !=  11) {
                    wait(0.03);
                    input = read_keypad();
                }
                if (input == 10) current_state = ENROLL;
                else current_state = AUTH;
                break;

            case ENROLL:
                if (get_user_id(user_id)) current_state = FP_ENROLL;
                else current_state = ENROLL_FAIL;
                break;

            case FP_ENROLL:
                if (fp_enroll(&fp)) {
                    current_state = MC_ENROLL;
                } else {
                    current_state = ENROLL_FAIL;
                }
                break;

            case MC_ENROLL:
                read_mag_card(&mag_card, mag_card_data, &mc_bytes);
                temp = hashcode(mag_card_data, mc_bytes);
                temp1 = id_to_int(user_id, 4);
                add_to_table(records, record_index++, temp1, temp);
                current_state = FACE_ENROLL;                
                break;

            case FACE_ENROLL:
                if (face_enroll(user_id, &android)) {
                    current_state = SPEECH_ENROLL;
                } else current_state = ENROLL_FAIL;
                break;

            case SPEECH_ENROLL:
                if (speech_enroll(user_id, &android)) {
                    current_state = ENROLL_SUCCESS;
                } else current_state = ENROLL_FAIL;
                break;

            case ENROLL_SUCCESS:
                success_display(&lcd, "ENROLLMENT SUCCESSFUL.");
                current_state = STANDBY;
                break;
        }
    }
}