add main file and Makefile

Makefile

@@ -0,0 +1,12 @@
+SOURCE = main.c
+CC     = arm-linux-gnueabi-gcc
+FLAG   = --static -o
+OUT    = I2C_scan.elf
+main:${SOURCE}
+	${CC} ${SOURCE} ${FLAG} ${OUT}
+clean:
+	rm -r ${OUT}
+.PHONY:clean
+	
+	
+

main.c

@@ -0,0 +1,46 @@
+/* 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;
+}
+