There is a problem while i use esp8266 for my project fingerprint attendance system

dotdvn · January 30, 2025, 7:06pm

Variables and constants in RAM (global, static), used 30264 / 80192 bytes (37%)
║ SEGMENT BYTES DESCRIPTION
╠══ DATA 1516 initialized variables
╠══ RODATA 1596 constants
╚══ BSS 27152 zeroed variables
. Instruction RAM (IRAM_ATTR, ICACHE_RAM_ATTR), used 62559 / 65536 bytes (95%)
║ SEGMENT BYTES DESCRIPTION
╠══ ICACHE 32768 reserved space for flash instruction cache
╚══ IRAM 29791 code in IRAM
. Code in flash (default, ICACHE_FLASH_ATTR), used 278912 / 1048576 bytes (26%)
║ SEGMENT BYTES DESCRIPTION
╚══ IROM 278912 code in flash

///////////////////////////////MYCODE/////////////////////////////////

// NodeMCU --------------------------
#include <Arduino.h>
#include <WiFiClient.h>
#include <ESP8266WiFi.h>
#include <SoftwareSerial.h>
#include <ESP8266HTTPClient.h>
#include <SimpleTimer.h>

// OLED -----------------------------
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_Fingerprint.h>

// Function prototypes
void CheckMode();
void ChecktoAddID();
void CheckFingerprint();
void ChecktoDeleteID();
void connectToWiFi();
void confirmAdding(int id);
void initializeSerial();
uint8_t getFingerprintEnroll();
uint8_t getFingerprintID();

//************************************************************************
// Fingerprint scanner Pins
#define Finger_Rx 14 // D5
#define Finger_Tx 12 // D6

// Declaration for SSD1306 display connected using software I2C (pins are 22 SCL, 21 SDA)
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_RESET 0 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

//************************************************************************
SimpleTimer timer;
SoftwareSerial mySerial(Finger_Rx, Finger_Tx);
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);

//************************************************************************
/* Set these to your desired credentials. */
const char *ssid = "Airtel_DWARAKA";
const char password = "airdwaraka";
const char device_token = "e1caa0b5c8bc5418";

//************************************************************************
String getData, Link;
String URL = "http://192.168.xx.xx/sandeepani_balagokulam_attendance/getdata.php"; // Computer IP or the server domain

//************************************************************************
int FingerID = 0, t1, t2; // The Fingerprint ID from the scanner
bool device_Mode = false; // Default Mode Enrollment
bool firstConnect = false;
uint8_t id;
unsigned long previousMillis = 0;

//Biometric Icons********
#define Wifi_start_width 54
#define Wifi_start_height 49
const uint8_t PROGMEM Wifi_start_bits[] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x1f,0xf0,0x00,0x00,0x00,
0x00,0x03,0xff,0xff,0x80,0x00,0x00,
0x00,0x1f,0xf0,0x1f,0xf0,0x00,0x00,
0x00,0x7e,0x00,0x00,0xfc,0x00,0x00,
0x01,0xf0,0x00,0x00,0x1f,0x00,0x00,
0x03,0xc0,0x00,0x00,0x07,0xc0,0x00,
0x0f,0x00,0x00,0x00,0x01,0xe0,0x00,
0x1c,0x00,0x00,0x00,0x00,0x70,0x00,
0x38,0x00,0x07,0xc0,0x00,0x38,0x00,
0x70,0x00,0xff,0xfe,0x00,0x1e,0x00,
0xe0,0x03,0xfc,0x7f,0xc0,0x0e,0x00,
0x00,0x1f,0x80,0x03,0xf0,0x00,0x00,
0x00,0x3c,0x00,0x00,0x78,0x00,0x00,
0x00,0xf0,0x00,0x00,0x1c,0x00,0x00,
0x01,0xe0,0x00,0x00,0x0c,0x00,0x00,
0x03,0x80,0x00,0x00,0x00,0x00,0x00,
0x03,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x3f,0xf8,0x07,0x1e,0x00,
0x00,0x00,0xff,0xfe,0x1f,0xbf,0x80,
0x00,0x03,0xe0,0x04,0x7f,0xff,0xc0,
0x00,0x0e,0x00,0x00,0xff,0xff,0xe0,
0x00,0x0c,0x00,0x00,0x7f,0xff,0xc0,
0x00,0x00,0x00,0x00,0xfe,0x07,0xe0,
0x00,0x00,0x00,0x03,0xf8,0x03,0xf8,
0x00,0x00,0x07,0xe7,0xf9,0xf1,0xfc,
0x00,0x00,0x1f,0xe7,0xf1,0xf9,0xfc,
0x00,0x00,0x1f,0xe7,0xf3,0xf9,0xfc,
0x00,0x00,0x3f,0xe7,0xf3,0xf9,0xfc,
0x00,0x00,0x3f,0xf3,0xfc,0x07,0xf8,
0x00,0x00,0x1f,0xf0,0x7f,0x0f,0xc0,
0x00,0x00,0x0f,0xe0,0x7f,0xff,0xe0,
0x00,0x00,0x07,0xc0,0xff,0xff,0xe0,
0x00,0x00,0x00,0x00,0x7f,0xff,0xe0,
0x00,0x00,0x00,0x00,0x3f,0xff,0x80,
0x00,0x00,0x00,0x00,0x1f,0xbf,0x00,
0x00,0x00,0x00,0x00,0x03,0x18,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,
};

#define Wifi_connected_width 63
#define Wifi_connected_height 49
const uint8_t PROGMEM Wifi_connected_bits[] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x03,0xff,0xff,0x80,0x00,0x00,
0x00,0x00,0x3f,0xff,0xff,0xf8,0x00,0x00,
0x00,0x01,0xff,0xff,0xff,0xff,0x00,0x00,
0x00,0x0f,0xff,0xff,0xff,0xff,0xe0,0x00,
0x00,0x3f,0xff,0xc0,0x07,0xff,0xf8,0x00,
0x00,0xff,0xf8,0x00,0x00,0x3f,0xfe,0x00,
0x03,0xff,0x80,0x00,0x00,0x03,0xff,0x80,
0x07,0xfe,0x00,0x00,0x00,0x00,0xff,0xc0,
0x1f,0xf8,0x00,0x00,0x00,0x00,0x3f,0xf0,
0x3f,0xe0,0x01,0xff,0xff,0x00,0x0f,0xf8,
0x7f,0x80,0x0f,0xff,0xff,0xe0,0x03,0xfc,
0xff,0x00,0x7f,0xff,0xff,0xfc,0x01,0xfe,
0xfc,0x01,0xff,0xff,0xff,0xff,0x00,0x7e,
0x78,0x07,0xff,0xc0,0x07,0xff,0xc0,0x3c,
0x00,0x0f,0xfc,0x00,0x00,0x7f,0xe0,0x00,
0x00,0x1f,0xf0,0x00,0x00,0x1f,0xf0,0x00,
0x00,0x3f,0xc0,0x00,0x00,0x07,0xf8,0x00,
0x00,0x7f,0x00,0x01,0x00,0x01,0xfc,0x00,
0x00,0x7e,0x00,0x7f,0xfc,0x00,0xfc,0x00,
0x00,0x3c,0x03,0xff,0xff,0x80,0x78,0x00,
0x00,0x00,0x07,0xff,0xff,0xc0,0x00,0x00,
0x00,0x00,0x1f,0xff,0xff,0xf0,0x00,0x00,
0x00,0x00,0x3f,0x80,0x03,0xf8,0x00,0x00,
0x00,0x00,0x3f,0x00,0x01,0xf8,0x00,0x00,
0x00,0x00,0x1c,0x00,0x00,0x70,0x00,0x00,
0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x0f,0xe0,0x00,0x00,0x00,
0x00,0x00,0x00,0x1f,0xf0,0x00,0x00,0x00,
0x00,0x00,0x00,0x3f,0xf8,0x00,0x00,0x00,
0x00,0x00,0x00,0x3f,0xf8,0x00,0x00,0x00,
0x00,0x00,0x00,0x3f,0xf8,0x00,0x00,0x00,
0x00,0x00,0x00,0x3f,0xf8,0x00,0x00,0x00,
0x00,0x00,0x00,0x1f,0xf0,0x00,0x00,0x00,
0x00,0x00,0x00,0x0f,0xe0,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
};

#define FinPr_start_width 64
#define FinPr_start_height 64
const uint8_t PROGMEM FinPr_start_bits[] = {
0x00,0x00,0x00,0x1f,0xe0,0x00,0x00,0x00,
0x00,0x00,0x01,0xff,0xfe,0x00,0x00,0x00,
0x00,0x00,0x03,0xff,0xff,0x80,0x00,0x00,
0x00,0x00,0x0f,0xc0,0x0f,0xe0,0x00,0x00,
0x00,0x00,0x1f,0x00,0x01,0xf8,0x00,0x00,
0x00,0x00,0x3c,0x00,0x00,0x7c,0x00,0x00,
0x00,0x00,0x78,0x00,0x00,0x3e,0x00,0x00,
0x00,0x00,0xf0,0x3f,0xf8,0x0f,0x00,0x00,
0x00,0x01,0xe0,0xff,0xfe,0x07,0x80,0x00,
0x00,0x03,0xc3,0xff,0xff,0x03,0x80,0x00,
0x00,0x03,0x87,0xc0,0x07,0xc3,0xc0,0x00,
0x00,0x07,0x0f,0x00,0x03,0xe1,0xc0,0x00,
0x00,0x0f,0x0e,0x00,0x00,0xe0,0xe0,0x00,
0x00,0x0e,0x1c,0x00,0x00,0xf0,0xe0,0x00,
0x00,0x0c,0x3c,0x1f,0xe0,0x70,0xe0,0x00,
0x00,0x00,0x38,0x3f,0xf0,0x38,0x70,0x00,
0x00,0x00,0x78,0x78,0xf8,0x38,0x70,0x00,
0x00,0x00,0x70,0x70,0x3c,0x18,0x70,0x00,
0x00,0x00,0xe0,0xe0,0x1e,0x1c,0x70,0x00,
0x00,0x03,0xe1,0xe0,0x0e,0x1c,0x70,0x00,
0x00,0x0f,0xc1,0xc3,0x0e,0x1c,0x70,0x00,
0x00,0x3f,0x03,0xc3,0x8e,0x1c,0x70,0x00,
0x00,0x30,0x07,0x07,0x0e,0x18,0xe0,0x00,
0x00,0x00,0x0e,0x0e,0x0e,0x38,0xe0,0x00,
0x00,0x00,0x3e,0x1e,0x1e,0x38,0xe0,0x00,
0x00,0x00,0xf8,0x1c,0x1c,0x38,0xe0,0x00,
0x00,0x03,0xf0,0x38,0x3c,0x38,0xe0,0x00,
0x00,0x3f,0xc0,0xf8,0x78,0x38,0xe0,0x00,
0x00,0x7f,0x01,0xf0,0x70,0x38,0xf0,0x00,
0x00,0x78,0x03,0xe0,0xe0,0x38,0x70,0x00,
0x00,0x00,0x0f,0x81,0xe0,0x38,0x7c,0x00,
0x00,0x00,0x3f,0x03,0xc0,0x38,0x3e,0x00,
0x00,0x00,0xfc,0x0f,0x80,0x38,0x1e,0x00,
0x00,0x07,0xf0,0x1f,0x1c,0x1c,0x04,0x00,
0x00,0x3f,0xc0,0x3e,0x3f,0x1e,0x00,0x00,
0x00,0x7f,0x00,0xf8,0x7f,0x0f,0x00,0x00,
0x00,0x38,0x01,0xf0,0xf7,0x07,0xc0,0x00,
0x00,0x00,0x07,0xe1,0xe3,0x83,0xf8,0x00,
0x00,0x00,0x3f,0x87,0xc3,0xc0,0xfc,0x00,
0x00,0x01,0xfe,0x0f,0x81,0xe0,0x3c,0x00,
0x00,0x0f,0xf8,0x1f,0x00,0xf0,0x00,0x00,
0x00,0x1f,0xc0,0x7c,0x00,0x7c,0x00,0x00,
0x00,0x1e,0x01,0xf8,0x00,0x3f,0x00,0x00,
0x00,0x00,0x07,0xe0,0x78,0x0f,0xc0,0x00,
0x00,0x00,0x3f,0x81,0xfe,0x07,0xf0,0x00,
0x00,0x01,0xfe,0x07,0xff,0x01,0xf0,0x00,
0x00,0x07,0xf8,0x0f,0x87,0x80,0x30,0x00,
0x00,0x07,0xc0,0x3f,0x03,0xe0,0x00,0x00,
0x00,0x06,0x00,0xfc,0x01,0xf8,0x00,0x00,
0x00,0x00,0x03,0xf0,0x00,0x7e,0x00,0x00,
0x00,0x00,0x0f,0xc0,0x00,0x3f,0x80,0x00,
0x00,0x00,0x7f,0x00,0xf8,0x0f,0x80,0x00,
0x00,0x00,0xfc,0x03,0xfe,0x01,0x80,0x00,
0x00,0x00,0xf0,0x1f,0xff,0x80,0x00,0x00,
0x00,0x00,0x00,0x7f,0x07,0xe0,0x00,0x00,
0x00,0x00,0x00,0xfc,0x03,0xf8,0x00,0x00,
0x00,0x00,0x03,0xf0,0x00,0x78,0x00,0x00,
0x00,0x00,0x0f,0xc0,0x00,0x18,0x00,0x00,
0x00,0x00,0x0f,0x01,0xf8,0x00,0x00,0x00,
0x00,0x00,0x00,0x07,0xfe,0x00,0x00,0x00,
0x00,0x00,0x00,0x1f,0xfe,0x00,0x00,0x00,
0x00,0x00,0x00,0x1e,0x0e,0x00,0x00,0x00,
0x00,0x00,0x00,0x18,0x00,0x00,0x00,0x00,
};

#define FinPr_valid_width 64
#define FinPr_valid_height 64
const uint8_t PROGMEM FinPr_valid_bits[] = {
0x00,0x00,0x03,0xfe,0x00,0x00,0x00,0x00,
0x00,0x00,0x1f,0xff,0xe0,0x00,0x00,0x00,
0x00,0x00,0x7f,0xff,0xf8,0x00,0x00,0x00,
0x00,0x00,0xfc,0x00,0xfe,0x00,0x00,0x00,
0x00,0x03,0xe0,0x00,0x1f,0x00,0x00,0x00,
0x00,0x07,0xc0,0x00,0x07,0x80,0x00,0x00,
0x00,0x0f,0x80,0x00,0x03,0xe0,0x00,0x00,
0x00,0x0e,0x03,0xff,0x01,0xe0,0x00,0x00,
0x00,0x1c,0x1f,0xff,0xe0,0xf0,0x00,0x00,
0x00,0x3c,0x3f,0xff,0xf0,0x78,0x00,0x00,
0x00,0x78,0x7c,0x00,0xf8,0x3c,0x00,0x00,
0x00,0x70,0xf0,0x00,0x3c,0x1c,0x00,0x00,
0x00,0xe1,0xe0,0x00,0x1e,0x1c,0x00,0x00,
0x00,0xe1,0xc0,0x00,0x0f,0x0e,0x00,0x00,
0x00,0xc3,0x81,0xfc,0x07,0x0e,0x00,0x00,
0x00,0x03,0x83,0xff,0x07,0x8e,0x00,0x00,
0x00,0x07,0x07,0x8f,0x83,0x87,0x00,0x00,
0x00,0x1e,0x0e,0x01,0xc3,0x87,0x00,0x00,
0x00,0x3c,0x1c,0x00,0xe1,0x87,0x00,0x00,
0x00,0xf8,0x1c,0x30,0xe1,0x87,0x00,0x00,
0x07,0xf0,0x38,0x70,0xe1,0x86,0x00,0x00,
0x07,0xc0,0x78,0x70,0xe3,0x8e,0x00,0x00,
0x02,0x00,0xf0,0xf0,0xe3,0x8e,0x00,0x00,
0x00,0x01,0xe0,0xe0,0xe3,0x8e,0x00,0x00,
0x00,0x03,0xc1,0xe1,0xc3,0x8e,0x00,0x00,
0x00,0x0f,0x83,0xc3,0xc3,0x8e,0x00,0x00,
0x00,0x7f,0x07,0x83,0x83,0x0e,0x00,0x00,
0x07,0xfc,0x0f,0x07,0x83,0x0e,0x00,0x00,
0x07,0xf0,0x1e,0x0f,0x03,0x0e,0x00,0x00,
0x07,0x80,0x7c,0x1e,0x03,0x07,0x00,0x00,
0x00,0x00,0xf8,0x3c,0x03,0x87,0x80,0x00,
0x00,0x03,0xf0,0x78,0x03,0x83,0xc0,0x00,
0x00,0xff,0x01,0xe1,0xc0,0x0c,0x00,0x00,
0x07,0xfc,0x03,0xc3,0xe1,0xff,0xc0,0x00,
0x07,0xe0,0x0f,0x87,0xc7,0xff,0xf0,0x00,
0x00,0x00,0x7c,0x3e,0x3f,0xff,0xfe,0x00,
0x00,0x03,0xf8,0x7c,0x3f,0xff,0xff,0x00,
0x00,0x1f,0xe0,0xf0,0x7f,0xff,0xff,0x80,
0x00,0xff,0x83,0xe0,0xff,0xff,0xff,0x80,
0x01,0xfc,0x07,0xc1,0xff,0xff,0xe3,0xc0,
0x01,0xe0,0x1f,0x01,0xff,0xff,0xc3,0xc0,
0x00,0x00,0xfe,0x01,0xff,0xff,0x87,0xe0,
0x00,0x03,0xf8,0x13,0xff,0xff,0x0f,0xe0,
0x00,0x1f,0xe0,0x73,0xff,0xfe,0x1f,0xe0,
0x00,0x7f,0x81,0xf3,0xff,0xfc,0x1f,0xe0,
0x00,0xfc,0x03,0xe3,0xef,0xf8,0x3f,0xe0,
0x00,0x60,0x0f,0xc3,0xc7,0xf0,0x7f,0xe0,
0x00,0x00,0x3f,0x03,0xc3,0xe0,0xff,0xe0,
0x00,0x00,0xfc,0x03,0xc1,0xc1,0xff,0xe0,
0x00,0x07,0xf0,0x13,0xe0,0x83,0xff,0xe0,
0x00,0x0f,0xc0,0x7b,0xf8,0x07,0xff,0xe0,
0x00,0x0f,0x01,0xf9,0xfc,0x0f,0xff,0xc0,
0x00,0x00,0x07,0xf1,0xfe,0x1f,0xff,0xc0,
0x00,0x00,0x1f,0xc0,0xff,0x3f,0xff,0x80,
0x00,0x00,0x7e,0x00,0xff,0xff,0xff,0x80,
0x00,0x00,0xfc,0x00,0x7f,0xff,0xff,0x00,
0x00,0x00,0xf0,0x1f,0x3f,0xff,0xfe,0x00,
0x00,0x00,0x00,0x7f,0x1f,0xff,0xfc,0x00,
0x00,0x00,0x01,0xff,0x8f,0xff,0xf8,0x00,
0x00,0x00,0x03,0xe0,0xe3,0xff,0xe0,0x00,
0x00,0x00,0x01,0x80,0x00,0x7f,0x00,0x00,
};

#define FinPr_invalid_width 64
#define FinPr_invalid_height 64
const uint8_t PROGMEM FinPr_invalid_bits[] = {
0x00,0x00,0x03,0xfe,0x00,0x00,0x00,0x00,
0x00,0x00,0x1f,0xff,0xe0,0x00,0x00,0x00,
0x00,0x00,0x7f,0xff,0xf8,0x00,0x00,0x00,
0x00,0x00,0xfc,0x00,0xfe,0x00,0x00,0x00,
0x00,0x03,0xe0,0x00,0x1f,0x00,0x00,0x00,
0x00,0x07,0xc0,0x00,0x07,0x80,0x00,0x00,
0x00,0x0f,0x80,0x00,0x03,0xe0,0x00,0x00,
0x00,0x0e,0x03,0xff,0x01,0xe0,0x00,0x00,
0x00,0x1c,0x1f,0xff,0xe0,0xf0,0x00,0x00,
0x00,0x3c,0x3f,0xff,0xf0,0x78,0x00,0x00,
0x00,0x78,0x7c,0x00,0xf8,0x3c,0x00,0x00,
0x00,0x70,0xf0,0x00,0x3c,0x1c,0x00,0x00,
0x00,0xe1,0xe0,0x00,0x1e,0x1c,0x00,0x00,
0x00,0xe1,0xc0,0x00,0x0f,0x0e,0x00,0x00,
0x00,0xc3,0x81,0xfc,0x07,0x0e,0x00,0x00,
0x00,0x03,0x83,0xff,0x07,0x8e,0x00,0x00,
0x00,0x07,0x07,0x8f,0x83,0x87,0x00,0x00,
0x00,0x0f,0x0f,0x03,0xc3,0x87,0x00,0x00,
0x00,0x1e,0x0e,0x01,0xc3,0x87,0x00,0x00,
0x00,0x3c,0x1c,0x00,0xe1,0x87,0x00,0x00,
0x00,0xf8,0x1c,0x30,0xe1,0x87,0x00,0x00,
0x07,0xf0,0x38,0x70,0xe1,0x86,0x00,0x00,
0x07,0xc0,0x78,0x70,0xe3,0x8e,0x00,0x00,
0x02,0x00,0xf0,0xf0,0xe3,0x8e,0x00,0x00,
0x00,0x01,0xe0,0xe0,0xe3,0x8e,0x00,0x00,
0x00,0x03,0xc1,0xe1,0xc3,0x8e,0x00,0x00,
0x00,0x0f,0x83,0xc3,0xc3,0x8e,0x00,0x00,
0x00,0x7f,0x07,0x83,0x83,0x0e,0x00,0x00,
0x07,0xfc,0x0f,0x07,0x83,0x0e,0x00,0x00,
0x07,0xf0,0x1e,0x0f,0x03,0x0e,0x00,0x00,
0x07,0x80,0x7c,0x1e,0x03,0x07,0x00,0x00,
0x00,0x00,0xf8,0x3c,0x03,0x87,0x80,0x00,
0x00,0x03,0xf0,0x78,0x03,0x83,0xc0,0x00,
0x00,0x1f,0xc0,0xf0,0x02,0x00,0x00,0x00,
0x00,0xff,0x01,0xe1,0xc0,0x00,0x00,0x00,
0x07,0xfc,0x03,0xc3,0xe1,0xff,0xc0,0x00,
0x07,0xe0,0x0f,0x87,0xc7,0xff,0xf0,0x00,
0x07,0x00,0x3f,0x0f,0x0f,0xff,0xf8,0x00,
0x00,0x00,0x7c,0x3e,0x1f,0xff,0xfe,0x00,
0x00,0x03,0xf8,0x7c,0x3f,0xff,0xff,0x00,
0x00,0x1f,0xe0,0xf0,0x7f,0xff,0xff,0x00,
0x00,0xff,0x83,0xe0,0xfe,0xff,0xbf,0x80,
0x01,0xfc,0x07,0xc0,0xfc,0x7f,0x1f,0xc0,
0x01,0xe0,0x1f,0x01,0xf8,0x3e,0x0f,0xc0,
0x00,0x00,0xfe,0x01,0xf8,0x1c,0x07,0xe0,
0x00,0x03,0xf8,0x13,0xf8,0x00,0x0f,0xe0,
0x00,0x1f,0xe0,0x73,0xfc,0x00,0x1f,0xe0,
0x00,0x7f,0x81,0xf3,0xfe,0x00,0x3f,0xe0,
0x00,0xfc,0x03,0xe3,0xff,0x00,0x7f,0xe0,
0x00,0x60,0x0f,0xc3,0xff,0x80,0xff,0xe0,
0x00,0x00,0x3f,0x03,0xff,0x00,0x7f,0xe0,
0x00,0x00,0xfc,0x03,0xfe,0x00,0x3f,0xe0,
0x00,0x07,0xf0,0x13,0xfc,0x00,0x1f,0xe0,
0x00,0x0f,0xc0,0x79,0xf8,0x08,0x0f,0xe0,
0x00,0x0f,0x01,0xf9,0xf8,0x1c,0x0f,0xc0,
0x00,0x00,0x07,0xf1,0xfc,0x3e,0x1f,0xc0,
0x00,0x00,0x1f,0xc0,0xfe,0x7f,0x3f,0x80,
0x00,0x00,0x7e,0x00,0xff,0xff,0xff,0x80,
0x00,0x00,0xfc,0x00,0x7f,0xff,0xff,0x00,
0x00,0x00,0xf0,0x1f,0x3f,0xff,0xfe,0x00,
0x00,0x00,0x00,0x7f,0x1f,0xff,0xfc,0x00,
0x00,0x00,0x01,0xff,0x8f,0xff,0xf8,0x00,
0x00,0x00,0x03,0xe0,0xe3,0xff,0xe0,0x00,
0x00,0x00,0x01,0x80,0x00,0x7f,0x00,0x00,
};

#define FinPr_failed_width 64
#define FinPr_failed_height 64
const uint8_t PROGMEM FinPr_failed_bits[] = {
0x00,0x00,0x3f,0xe0,0x00,0x00,0x00,0x00,
0x00,0x01,0xff,0xfe,0x00,0x00,0x00,0x00,
0x00,0x0f,0xc0,0x1f,0x80,0x00,0x00,0x00,
0x00,0x1e,0x00,0x03,0xc0,0x00,0x00,0x00,
0x00,0x78,0x00,0x00,0xf0,0x00,0x00,0x00,
0x00,0xe0,0x00,0x00,0x38,0x00,0x00,0x00,
0x01,0xc0,0x00,0x00,0x1c,0x00,0x00,0x00,
0x03,0x80,0x00,0x00,0x0e,0x00,0x00,0x00,
0x07,0x00,0x7f,0xe0,0x07,0x00,0x00,0x00,
0x06,0x01,0xff,0xf8,0x03,0x00,0x00,0x00,
0x0c,0x03,0xc0,0x3c,0x03,0x80,0x00,0x00,
0x1c,0x0f,0x00,0x0e,0x01,0x80,0x00,0x00,
0x18,0x0c,0x00,0x03,0x00,0xc0,0x00,0x00,
0x18,0x18,0x00,0x01,0x80,0xc0,0x00,0x00,
0x30,0x38,0x00,0x01,0xc0,0xe0,0x00,0x00,
0x30,0x30,0x0f,0x00,0xc0,0x60,0x00,0x00,
0x30,0x30,0x3f,0xc0,0xe0,0x60,0x00,0x00,
0x70,0x60,0x78,0xe0,0x60,0x60,0x00,0x00,
0x60,0x60,0x60,0x60,0x60,0x70,0x00,0x00,
0x60,0x60,0x60,0x60,0x60,0x30,0x00,0x00,
0x60,0x60,0x60,0x60,0x30,0x30,0x00,0x00,
0x60,0x60,0x60,0x30,0x30,0x20,0x00,0x00,
0x60,0x60,0x60,0x30,0x30,0x01,0xe0,0x00,
0x60,0x60,0x60,0x30,0x30,0x0f,0xfc,0x00,
0x60,0x60,0x60,0x30,0x30,0x3f,0xff,0x00,
0x60,0x60,0x60,0x30,0x18,0x78,0x03,0x80,
0x60,0x60,0x60,0x30,0x1c,0x60,0x01,0x80,
0x60,0x60,0x30,0x38,0x0c,0xc0,0x00,0xc0,
0x00,0x60,0x30,0x18,0x00,0xc0,0x00,0xc0,
0x00,0x60,0x30,0x18,0x00,0xc0,0x00,0xc0,
0x00,0xe0,0x30,0x0c,0x01,0xc0,0x00,0xe0,
0x00,0xc0,0x18,0x0e,0x01,0xc0,0x00,0xe0,
0x60,0xc0,0x18,0x07,0x01,0xc0,0x00,0xe0,
0x01,0xc0,0x1c,0x03,0x81,0xc0,0x00,0xe0,
0x01,0x80,0x0c,0x01,0xc1,0xc0,0x00,0xe0,
0x03,0x80,0x0e,0x00,0xf1,0xc0,0x00,0xe0,
0x0f,0x00,0x06,0x00,0x01,0xc0,0x00,0xe0,
0x3e,0x01,0x03,0x00,0x01,0xc0,0x00,0xe0,
0x30,0x03,0x83,0x80,0x1f,0xff,0xff,0xfe,
0x00,0x03,0x81,0xc0,0x3f,0xff,0xff,0xff,
0x00,0x07,0xc0,0xe0,0x30,0x00,0x00,0x03,
0x00,0x0e,0xc0,0x78,0x30,0x00,0x00,0x03,
0x00,0x3c,0x60,0x1e,0x30,0x00,0x00,0x03,
0x00,0x78,0x70,0x0f,0x30,0x00,0x00,0x03,
0x03,0xe0,0x38,0x03,0x30,0x00,0x00,0x03,
0x07,0x80,0x1c,0x00,0x30,0x00,0x00,0x03,
0xc0,0x00,0x0f,0x00,0x30,0x00,0x00,0x03,
0xc0,0x00,0x03,0x80,0x30,0x01,0xe0,0x03,
0x00,0x18,0x01,0xe0,0x30,0x03,0xf0,0x03,
0x00,0x18,0x00,0x7c,0x30,0x07,0x38,0x03,
0x00,0x0c,0x00,0x1f,0x30,0x06,0x18,0x03,
0x18,0x0e,0x00,0x07,0x30,0x06,0x18,0x03,
0x0c,0x07,0x80,0x00,0x30,0x07,0x38,0x03,
0x0e,0x03,0xc0,0x00,0x30,0x03,0x30,0x03,
0x07,0x00,0xf0,0x00,0x30,0x03,0x30,0x03,
0x03,0x00,0x7e,0x00,0x30,0x03,0x30,0x03,
0x01,0x80,0x1f,0xc0,0x30,0x03,0x30,0x03,
0x01,0xc0,0x03,0xe1,0x30,0x07,0xf8,0x03,
0x00,0xf0,0x00,0x01,0x30,0x03,0xf0,0x03,
0x00,0x38,0x00,0x00,0x30,0x00,0x00,0x03,
0x00,0x1e,0x00,0x00,0x30,0x00,0x00,0x03,
0x00,0x07,0xc0,0x00,0x30,0x00,0x00,0x03,
0x00,0x01,0xff,0x80,0x3f,0xff,0xff,0xff,
0x00,0x00,0x3f,0x80,0x1f,0xff,0xff,0xfe,
};

#define FinPr_scan_width 64
#define FinPr_scan_height 64
const uint8_t PROGMEM FinPr_scan_bits[] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x1f,0xf8,0x00,0x00,0x00,
0x00,0x00,0x00,0x7f,0xff,0x00,0x00,0x00,
0x00,0x00,0x01,0xfc,0x7f,0xc0,0x00,0x00,
0x00,0x00,0x03,0xc0,0x03,0xe0,0x00,0x00,
0x00,0x00,0x07,0x80,0x00,0xf0,0x00,0x00,
0x00,0x00,0x0e,0x00,0x00,0x3c,0x00,0x00,
0x00,0x00,0x1c,0x1f,0xfc,0x1c,0x00,0x00,
0x00,0x00,0x38,0x7f,0xfe,0x0e,0x00,0x00,
0x00,0x00,0x78,0xf8,0x0f,0x87,0x00,0x00,
0x00,0x00,0x71,0xe0,0x03,0xc7,0x00,0x00,
0x00,0x00,0xe3,0x80,0x01,0xc3,0x80,0x00,
0x00,0x00,0xc3,0x83,0xc0,0xe3,0x80,0x00,
0x00,0x00,0xc7,0x0f,0xf0,0x71,0x80,0x00,
0x00,0x00,0x06,0x1f,0xf8,0x71,0xc0,0x00,
0x00,0x00,0x0e,0x1c,0x3c,0x31,0xc0,0x00,
0x00,0x00,0x1c,0x38,0x1c,0x31,0xc0,0x00,
0x00,0x00,0x38,0x70,0x0e,0x39,0xc0,0x00,
0x00,0x01,0xf0,0x71,0x8e,0x39,0xc0,0x00,
0x00,0x03,0xe0,0xe1,0x86,0x31,0xc0,0x00,
0x00,0x03,0x81,0xe3,0x8e,0x31,0x80,0x00,
0x00,0x00,0x03,0xc3,0x8e,0x33,0x80,0x00,
0x00,0x00,0x07,0x87,0x0c,0x73,0x80,0x00,
0x00,0x00,0x1f,0x0e,0x1c,0x73,0x80,0x00,
0x7f,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0x7f,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x03,0xf0,0x1e,0x3e,0x1c,0x00,0x00,
0x00,0x03,0x80,0x7c,0x77,0x0f,0x00,0x00,
0x00,0x00,0x01,0xf0,0xe3,0x07,0xc0,0x00,
0x00,0x00,0x07,0xe3,0xc3,0x81,0xf0,0x00,
0x00,0x00,0x3f,0x87,0x81,0xc0,0x60,0x00,
0x00,0x01,0xfc,0x1f,0x00,0xf0,0x00,0x00,
0x00,0x01,0xe0,0x3c,0x00,0x7c,0x00,0x00,
0x00,0x00,0x00,0xf8,0x78,0x1f,0x00,0x00,
0x00,0x00,0x07,0xe0,0xfc,0x0f,0xc0,0x00,
0x00,0x00,0x3f,0x83,0xef,0x03,0xc0,0x00,
0x00,0x00,0xfc,0x0f,0x87,0x80,0x00,0x00,
0x00,0x00,0x70,0x1f,0x03,0xe0,0x00,0x00,
0x00,0x00,0x00,0x7c,0x00,0xf8,0x00,0x00,
0x00,0x00,0x01,0xf0,0x00,0x3e,0x00,0x00,
0x00,0x00,0x0f,0xc0,0xf8,0x0f,0x00,0x00,
0x00,0x00,0x1f,0x03,0xfe,0x02,0x00,0x00,
0x00,0x00,0x0c,0x0f,0x8f,0x80,0x00,0x00,
0x00,0x00,0x00,0x3f,0x03,0xe0,0x00,0x00,
0x00,0x00,0x00,0xf8,0x00,0xf0,0x00,0x00,
0x00,0x00,0x01,0xe0,0x00,0x30,0x00,0x00,
0x00,0x00,0x01,0xc0,0xf8,0x00,0x00,0x00,
0x00,0x00,0x00,0x07,0xfe,0x00,0x00,0x00,
0x00,0x00,0x00,0x0f,0x8e,0x00,0x00,0x00,
0x00,0x00,0x00,0x06,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
};

//************************************************************************
void setup() {
Serial.begin(115200); // Initialize Serial communication
connectToWiFi(); // Call the function to connect to WiFi
delay(1000);

// Initialize OLED display
if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
Serial.println(F("SSD1306 allocation failed"));
for (;;); // Don't proceed, loop forever
}

// Display Adafruit logo (optional)
display.display();
delay(2000); // Pause for 2 seconds
display.clearDisplay();

// Initialize fingerprint sensor
finger.begin(57600);
Serial.println("\n\nAdafruit finger detect test");

if (finger.verifyPassword()) {
Serial.println("Found fingerprint sensor!");
display.clearDisplay();
display.drawBitmap(34, 0, FinPr_valid_bits, FinPr_valid_width, FinPr_valid_height, WHITE);
display.display();
} else {
Serial.println("Did not find fingerprint sensor :(");
display.clearDisplay();
display.drawBitmap(32, 0, FinPr_failed_bits, FinPr_failed_width, FinPr_failed_height, WHITE);
display.display();
while (1) { delay(1); }
}

// Get template count
finger.getTemplateCount();
Serial.print("Sensor contains "); Serial.print(finger.templateCount); Serial.println(" templates");
Serial.println("Waiting for valid finger...");

// Timers
timer.setInterval(25000L, CheckMode);
t1 = timer.setInterval(10000L, ChecktoAddID); // Check for new fingerprints every 10 seconds
t2 = timer.setInterval(15000L, ChecktoDeleteID); // Check for IDs to delete every 15 seconds

CheckMode();
}

//************************************************************************
void loop() {
timer.run(); // Keep the timer running
if (!WiFi.isConnected()) {
if (millis() - previousMillis >= 10000) {
previousMillis = millis();
connectToWiFi(); // Retry to connect to Wi-Fi
}
}
CheckFingerprint(); // Check the sensor for a fingerprint
delay(10);
}
//************************************************************************
void connectToWiFi() {
Serial.println("Connecting to WiFi...");
WiFi.mode(WIFI_OFF); // Prevent reconnection issues
delay(1000);
WiFi.mode(WIFI_STA); // Set WiFi to station mode

WiFi.begin(ssid, password); // Start the connection

// Display connecting message on the OLED
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(0, 0);
display.print(F("Connecting to \n"));
display.setCursor(0, 50);
display.setTextSize(2);
display.print("Mangalappallil");
display.display();

// Wait for connection
uint32_t periodToConnect = 30000L; // 30 seconds timeout
for (uint32_t StartToConnect = millis(); (millis() - StartToConnect) < periodToConnect;) {
if (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
} else {
break;
}
}

if (WiFi.isConnected()) {
Serial.println("");
Serial.println("Connected");

display.clearDisplay();
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(8, 0);
display.print(F("Connected \n"));
display.drawBitmap(33, 15, Wifi_connected_bits, Wifi_connected_width, Wifi_connected_height, WHITE);
display.display();

Serial.print("IP address: ");
Serial.println(WiFi.localIP()); // Print the local IP address

} else {
Serial.println("");
Serial.println("Not Connected");
WiFi.mode(WIFI_OFF);
delay(1000);
}
delay(1000);
}
//************************************************************************
void CheckFingerprint() {
FingerID = getFingerprintID();
DisplayFingerprintID();
}
//////////////////////////////////////////////////////////////////////////
void CheckMode() {
Serial.println("Checking Mode");
if (WiFi.isConnected()) {
HTTPClient http; // Declare object of class HTTPClient
WiFiClient client; // Create a WiFiClient object

// GET Data
String getData = "?Check_mode=get_mode&device_token=" + String(device_token);
String Link = URL + getData;

// Initiate HTTP request
http.begin(client, Link);

int httpCode = http.GET();   // Send the request
String payload = http.getString();    // Get the response payload

if (payload.substring(0, 4) == "mode") {
  String dev_mode = payload.substring(4);
  int devMode = dev_mode.toInt();
  if (!firstConnect) {
    device_Mode = devMode;
    firstConnect = true;
  }
  if (device_Mode && devMode) {
    device_Mode = false;
    timer.disable(t1);
    timer.disable(t2);
    Serial.println("Device Mode: Attendance");
  } else if (!device_Mode && !devMode) {
    device_Mode = true;
    timer.enable(t1);
    timer.enable(t2);
    Serial.println("Device Mode: Enrollment");
  }
}
http.end();  // Close connection

}
}
//Display the fingerprint ID state on the OLED*
void DisplayFingerprintID() {
if (FingerID > 0) {
display.clearDisplay();
display.drawBitmap(34, 0, FinPr_valid_bits, FinPr_valid_width, FinPr_valid_height, WHITE);
display.display();
SendFingerprintID(FingerID); // Send the Fingerprint ID to the website.
delay(2000);
} else if (FingerID == 0) {
display.clearDisplay();
display.drawBitmap(32, 0, FinPr_start_bits, FinPr_start_width, FinPr_start_height, WHITE);
display.display();
} else if (FingerID == -1) {
display.clearDisplay();
display.drawBitmap(34, 0, FinPr_invalid_bits, FinPr_invalid_width, FinPr_invalid_height, WHITE);
display.display();
} else if (FingerID == -2) {
display.clearDisplay();
display.drawBitmap(32, 0, FinPr_failed_bits, FinPr_failed_width, FinPr_failed_height, WHITE);
display.display();
}
}

//send the fingerprint ID to the website*
void SendFingerprintID(int finger) {
Serial.println("Sending the Fingerprint ID");
if (WiFi.isConnected()) {
HTTPClient http; // Declare object of class HTTPClient
WiFiClient client; // Create a WiFiClient object

char getData[100];
snprintf(getData, sizeof(getData), "?FingerID=%d&device_token=%s", finger, device_token);

// Use the WiFiClient object with the begin method
http.begin(client, Link); // Initiate HTTP request

int httpCode = http.GET();   // Send the request
String payload = http.getString();    // Get the response payload

Serial.println(httpCode);   // Print HTTP return code
Serial.println(payload);     // Print request response payload
Serial.println(finger);      // Print fingerprint ID

if (payload.substring(0, 5) == "login") {
  String user_name = payload.substring(5);
  display.clearDisplay();
  display.setTextSize(2);             // Normal 2:2 pixel scale
  display.setTextColor(WHITE);        // Draw white text
  display.setCursor(15, 0);           // Start at top-left corner
  display.print(F("Welcome"));
  display.setCursor(0, 20);
  display.print(user_name);
  display.display();
} else if (payload.substring(0, 6) == "logout") {
  String user_name = payload.substring(6);
  display.clearDisplay();
  display.setTextSize(2);             // Normal 2:2 pixel scale
  display.setTextColor(WHITE);        // Draw white text
  display.setCursor(10, 0);           // Start at top-left corner
  display.print(F("Good Bye"));
  display.setCursor(0, 20);
  display.print(user_name);
  display.display();
}
delay(10);
http.end();  // Close connection

}
}

//**Get the Fingerprint ID
uint8_t getFingerprintID() {
uint8_t p = finger.getImage();
switch (p) {
case FINGERPRINT_OK:
break;
case FINGERPRINT_NOFINGER:
return 0;
case FINGERPRINT_PACKETRECIEVEERR:
return -2;
case FINGERPRINT_IMAGEFAIL:
return -2;
default:
return -2;
}

p = finger.image2Tz();
switch (p) {
case FINGERPRINT_OK:
break;
case FINGERPRINT_IMAGEMESS:
return -1;
case FINGERPRINT_PACKETRECIEVEERR:
return -2;
case FINGERPRINT_FEATUREFAIL:
return -2;
case FINGERPRINT_INVALIDIMAGE:
return -2;
default:
return -2;
}

p = finger.fingerFastSearch();
if (p == FINGERPRINT_OK) {
Serial.print("Found ID #"); Serial.print(finger.fingerID);
Serial.print(" with confidence of "); Serial.println(finger.confidence);
return finger.fingerID;
} else if (p == FINGERPRINT_PACKETRECIEVEERR) {
return -2;
} else if (p == FINGERPRINT_NOTFOUND) {
return -1;
} else {
return -2;
}
}

//Check if there a Fingerprint ID to delete
void ChecktoDeleteID() {
Serial.println("Check to Delete ID");
if (WiFi.isConnected()) {
HTTPClient http; // Declare object of class HTTPClient
WiFiClient client; // Create a WiFiClient object

// GET Data
String getData = "?DeleteID=check&device_token=" + String(device_token);
String Link = URL + getData; // Ensure Link is defined as a String

// Correct usage of http.begin()
http.begin(client, Link); // Initiate HTTP request with Link

int httpCode = http.GET();   // Send the request
String payload = http.getString();    // Get the response payload

if (payload.substring(0, 6) == "del-id") {
  String del_id = payload.substring(6);
  Serial.println(del_id);
  http.end();  // Close connection
  deleteFingerprint(del_id.toInt());
  delay(1000);
}
http.end();  // Close connection

}
}
//*Delete Fingerprint ID
uint8_t deleteFingerprint(int id) {
uint8_t p = -1;

p = finger.deleteModel(id);

if (p == FINGERPRINT_OK) {
display.clearDisplay();
display.setTextSize(2); // Normal 2:2 pixel scale
display.setTextColor(WHITE); // Draw white text
display.setCursor(0, 0); // Start at top-left corner
display.print(F("Deleted!\n"));
display.display();
} else if (p == FINGERPRINT_PACKETRECIEVEERR) {
display.clearDisplay();
display.setTextSize(1); // Normal 1:1 pixel scale
display.setTextColor(WHITE); // Draw white text
display.setCursor(0, 0); // Start at top-left corner
display.print(F("Communication error!\n"));
display.display();
return p;
} else if (p == FINGERPRINT_BADLOCATION) {
display.clearDisplay();
display.setTextSize(1); // Normal 1:1 pixel scale
display.setTextColor(WHITE); // Draw white text
display.setCursor(0, 0); // Start at top-left corner
display.print(F("Could not delete in that location!\n"));
display.display();
return p;
} else if (p == FINGERPRINT_FLASHERR) {
display.clearDisplay();
display.setTextSize(1); // Normal 1:1 pixel scale
display.setTextColor(WHITE); // Draw white text
display.setCursor(0, 0); // Start at top-left corner
display.print(F("Error writing to flash!\n"));
display.display();
return p;
} else {
display.clearDisplay();
display.setTextSize(2); // Normal 2:2 pixel scale
display.setTextColor(WHITE); // Draw white text
display.setCursor(0, 0); // Start at top-left corner
display.print(F("Unknown error:\n"));
display.display();
return p;
}

return p;
}

//Check if there a Fingerprint ID to add
void ChecktoAddID() {
if (WiFi.isConnected()) {
HTTPClient http; // Declare object of class HTTPClient
WiFiClient client; // Create a WiFiClient object

// GET Data
String getData = "?Get_Fingerid=get_id&device_token=" + String(device_token);
String Link = URL + getData;

// Correct usage of http.begin()
http.begin(client, Link); // Initiate HTTP request

int httpCode = http.GET();   // Send the request
String payload = http.getString();    // Get the response payload

if (payload.substring(0, 6) == "add-id") {
  String add_id = payload.substring(6);
  Serial.println("Add ID: " + add_id);
  int id = add_id.toInt();
  http.end();  // Close connection
  // Call the function to enroll the fingerprint
  // getFingerprintEnroll(id);
}
http.end();  // Close connection

}

sonofcy · January 30, 2025, 7:41pm

First, edit your post and wrap the code in code tags. Second, I don;t see a problem statement. What did you expect, what actually happened. You should have Serial.print some debug and if you still can't find it, then post the debug logs in code tags as well.
EDIT Also do a IDE Tools Auto Format

MrY · January 30, 2025, 7:47pm

As stated by @sonofcy, please wrap your code in code tags.

That said, I tried to compile your code as is, and I am getting many compilation errors. Maybe these will be alleviated once the code within code tags is presented.

system · July 29, 2025, 7:47pm

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.

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