charger.cpp

#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <pthread.h>
#include <stdlib.h>
#include <stdint.h>
#include <linux/i2c-dev.h>
#include <arpa/inet.h>
#include <sys/ioctl.h>
#include "MFRC522.h"

#define I2C_ADDR 0x23
#define LCD_CHR 1
#define LCD_CMD 0
#define LINE1 0x80
#define LINE2 0xC0
#define LCD_BACKLIGHT 0x08
#define ENABLE 0b00000100
#define BUFFER_SIZE 1024

#define SERVER_IP "127.0.0.1"
#define SERVER_PORT 12345

int lcd_fd;
int client_socket;
int battery_percentage = 50;
int charging = 0;
int fire_detected = 0;
int car_parked = 0;

void lcd_init(int fd);
void lcd_byte(int fd, int bits, int mode);
void lcd_toggle_enable(int fd, int bits);
void lcd_loc(int fd, int line);
void lcd_clear(int fd);
void typeln(int fd, const char *s);
void *listen_to_server(void *arg);
void *update_battery_status(void *arg);
void *rfid_tag_listener(void *arg);

int main() {
    pthread_t server_thread, battery_thread, rfid_thread;

    // Initialize LCD
    const char *i2c_device = "/dev/i2c-1";
    lcd_fd = open(i2c_device, O_RDWR);
    if (lcd_fd < 0) {
        perror("Failed to open I2C device");
        return 1;
    }

    if (ioctl(lcd_fd, I2C_SLAVE, I2C_ADDR) < 0) {
        perror("Failed to acquire bus access or talk to slave");
        close(lcd_fd);
        return 1;
    }

    lcd_init(lcd_fd);

    client_socket = socket(AF_INET, SOCK_STREAM, 0);
    if (client_socket < 0) {
        perror("Socket creation failed");
        return 1;
    }

    struct sockaddr_in server_address;
    server_address.sin_family = AF_INET;
    server_address.sin_port = htons(SERVER_PORT);
    inet_pton(AF_INET, SERVER_IP, &server_address.sin_addr);