diff --git a/main.c b/main.c
index 7b09ea4..4fee8ee 100644
--- a/main.c
+++ b/main.c
@@ -1,29 +1,63 @@
 #include <stdint.h>
 #include "tm4c123gh6pm.h"
 
-#define STCTRL *((volatile uint32_t *) 0xE000E010)        // Control and status
-#define STRELOAD *((volatile uint32_t *) 0xE000E014)      // Reload value
-#define STCURRENT *((volatile uint32_t *) 0xE000E018)     // Current value
+#define STCTRL *((volatile uint32_t *) 0xE000E010)        // STATUS AND CONTROL REGISTER
+#define STRELOAD *((volatile uint32_t *) 0xE000E014)      // RELOAD VALUE REGISTER
+#define STCURRENT *((volatile uint32_t *) 0xE000E018)     // CURRENT VALUE REGISTER
+
+#define ENABLE (1 << 0)                                   // ENABLE TIMER BY SETTING BIT 0 OF CSR
+#define CLKINT (1 << 2)                                   // SPECIFY CPU CLOCK
+#define CLOCK_HZ 16000000                                 // CLOCK FREQUENCY
+#define SYSTICK_RELOAD_VALUE(us) ((CLOCK_HZ / 1000000) * (us) - 1)   // SYSTICK RELOAD VALUE CONVERSION IN MICROSECONDS
+
+void I2C0_init(void) {
+    SYSCTL_RCGCI2C_R |= 0x01;                             // I2C0 CLOCK ENABLE
+    SYSCTL_RCGCGPIO_R |= 0x02;                            // GPIO PORTB CLOCK ENABLE
+
+    while ((SYSCTL_PRGPIO_R & 0x02) == 0)
+    {
+                                                          // DELAY TO ENSURE CLOCK IS STABILIZED
+    };
+
+    GPIO_PORTB_AFSEL_R |= 0x0C;                           // ENABLE ALERNATE FUNCTION FOR PB2 AND PB3
+    GPIO_PORTB_ODR_R |= 0x08;                             // ENABLE OPEN DRAIN ON SDA
+    GPIO_PORTB_DEN_R |= 0x0C;                             // ENABLE DIGITAL FOR PB2 AND PB3
+    GPIO_PORTB_PCTL_R &= ~0xFF00;                         // CLEAR PCTL
+    GPIO_PORTB_PCTL_R |= 0x3300;                          // I2C FUNCTIONALITY FOR PB2 AND PB3
+
+    I2C0_MCR_R = 0x10;                                    // I2C MASTER FUNCTION INITIALIZE
+    I2C0_MTPR_R = 0x07;                                   // SET CLOCK
+}
+
+void I2C0_WRITE(uint8_t PERIPHERAL_ADDRESS, uint8_t ANALOG_SAMPLE_MSB, uint8_t ANALOG_SAMPLE_LSB)
+{
+    I2C0_MSA_R = (PERIPHERAL_ADDRESS << 1);               // SET PERIPHERAL ADDRESS, WRITE
+    I2C0_MDR_R = ANALOG_SAMPLE_MSB;                       // MSB
+    I2C0_MCS_R = 0x03;                                    // SEND START AND RUN
+    while (I2C0_MCS_R & 0x01);                            // WAIT FOR TRANSMISSION TO FINISH
+    if (I2C0_MCS_R & 0x02) return;                        // RETURN IF ERROR OCCURS
+
+    I2C0_MDR_R = ANALOG_SAMPLE_LSB;                       // LSB
+    I2C0_MCS_R = 0x05;                                    // SEND START AND RUN
+    while (I2C0_MCS_R & 0x01);                            // WAIT FOR TRANSMISSION TO FINISH
+    if (I2C0_MCS_R & 0x02) return;                        // RETURN IF ERROR OCCURS
+}
 
-#define ENABLE (1 << 0)      // Bit 0 of CSR to enable the timer
-#define CLKINT (1 << 2)      // Bit 2 of CSR to specify CPU clock
-#define CLOCK_HZ 16000000    // Clock frequency of EK-TM4C123GXL
-#define SYSTICK_RELOAD_VALUE(us) ((CLOCK_HZ / 1000000) * (us) - 1)   // SysTick reload value in microseconds based on clock frequency
 
 void systick_setting(void) 
 {
-    STRELOAD = SYSTICK_RELOAD_VALUE(1000);     // RELOAD VALUE FOR 1ms
-    STCTRL |= ENABLE | CLKINT;                 // Enable SysTick with system clock
-    STCURRENT = 0;                             // Clear current value
+    STRELOAD = SYSTICK_RELOAD_VALUE(1000);                // RELOAD VALUE FOR 1mS
+    STCTRL |= ENABLE | CLKINT;                            // ENABLE SYSTICK WITH SYSTEM CLOCK
+    STCURRENT = 0;                                        // CLEAR STCURRENT REGUSTER
 }
 
 void delay(int us) 
 {
-    STRELOAD = SYSTICK_RELOAD_VALUE(us);        // RELOAD VALUE FOR REQUIRED DELAY
-    STCURRENT = 0;                              // Clear STCURRENT
-    STCTRL |= ENABLE | CLKINT;                  // Enable SysTick
-    while ((STCTRL & (1 << 16)) == 0);          // Wait until flag is set
-    STCTRL &= ~ENABLE;                          // Stop the timer
+    STRELOAD = SYSTICK_RELOAD_VALUE(us);                  // RELOAD VALUE FOR REQUIRED DELAY
+    STCURRENT = 0;                                        // CLEAR STCURRENT
+    STCTRL |= ENABLE | CLKINT;                            // ENABLE SYSTICK WITH SYSTEM CLOCK
+    while ((STCTRL & (1 << 16)) == 0);                    // WAIT FOR FLAG TO SET
+    STCTRL &= ~ENABLE;                                    // STOP TIMER
 }
 
 int main(void) 
@@ -33,4 +67,4 @@ int main(void)
     {
       
     }
-}
\ No newline at end of file
+}