/* Autor : Siva Prakasam                      //
   Date  : 30/12/24			      // 
   Title : I2C scan  			      */


#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <sys/ioctl.h>
#include <linux/i2c-dev.h>

#define I2C_BUS "/dev/i2c-1"  // Modify according to your bus

int main() {
    int file;
    int addr;
    char *bus = I2C_BUS;

    // Open the I2C bus
    if ((file = open(bus, O_RDWR)) < 0) {
        perror("Failed to open I2C bus");
        exit(1);
    }

    printf("Scanning I2C bus %s...\n", bus);

    // Loop through all possible I2C addresses (0x03 to 0x77)
    for (addr = 0x03; addr < 0x78; addr++) {
        // Try to communicate with the device at the address
        if (ioctl(file, I2C_SLAVE, addr) < 0) {
            // Device not found
            continue;
        }

        // Device found, print the address
        printf("I2C device found at address 0x%02x\n", addr);
    }

    // Close the I2C bus
    close(file);

    return 0;
}