diff --git a/htu21d.c b/htu21d.c
new file mode 100644
index 0000000..fc57abb
--- /dev/null
+++ b/htu21d.c
@@ -0,0 +1,21 @@
+#include <unistd.h> //i2c
+#include <sys/ioctl.h>
+#include <linux/i2c-dev.h>
+#include <i2c/smbus.h>
+#include <stdio.h>
+
+#include "htu21d.h"
+
+// Reset function
+int i2cReset(int fd){
+	if(ioctl(fd, I2C_SLAVE, ADDR)<0){
+		perror("Failed to open the I2C bus; reset\n");
+		return -1;
+	}
+	i2c_smbus_write_byte(fd, RESET);
+	return 0;
+}
+
+// temperature
+
+// humidity
diff --git a/htu21d.h b/htu21d.h
index 7e08668..ff73173 100644
--- a/htu21d.h
+++ b/htu21d.h
@@ -12,6 +12,8 @@
 #define RESET 0xFE
 
 // prototype functions:
+int i2cReset(int fd);
+
 int getTemp(int fd, double *temp);
 
 int getHum(int fd, double *hum);
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..2897ce0
--- /dev/null
+++ b/main.c
@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+
+#include "htu21d.h"
+
+int main(int argc, char *argv[]){
+	int fd;
+	char path[20];
+	snprintf(path, sizeof(path), "/dev/i2c-%d", 1); // 1 is the number of I2C bus
+	fd = open(path, O_RDWR);
+	if(fd<0){
+		perror("Unable to access I2C bus path\n");
+		return -1;
+	}
+	i2cReset(fd); 
+	return 0;
+}
+
+