Update main.c

Initialize GPIO Port B

main.c

@@ -16,4 +16,25 @@ void GPIO_PORT_F_init(void)
     GPIO_PORTF_IBE_R = 0x00;                  // ONE EDGE
     GPIO_PORTF_IEV_R = 0x00;                  // INTERRUPT EVENT FALLING
     GPIO_PORTF_IM_R  |= 0x11;                 // UNMASK INTERRUPT
+}
+
+void GPIO_PORT_B_init(void)
+{
+
+    SYSCTL_RCGCGPIO_R |= 0x02;                // ENABLE CLOCK FOR GPIOB
+    SYSCTL_RCGCUART_R |= 0x02;                // ENABLE CLOCK FOR UART1
+
+    GPIO_PORTB_DEN_R |= 0x03;                 // DIGITAL ENABLE FOR PB0 AND PB1
+    GPIO_PORTB_AFSEL_R |= 0x03;               // ENABLE ALTERNATE FUNCTION ON PB0,PB1
+
+    GPIO_PORTB_PCTL_R = (GPIO_PORTB_PCTL_R & 0xFFFFFF00) | 0x00000011; // SET PB0, PB1 FOR UART FUNCTIONALITY
+
+    UART1_CTL_R &= ~0x01;                     // DISABLE UART1 DURING SETUP
+    UART1_IBRD_R = 104;                       // SET INTEGER PART OF BAUD RED FOR 9600 BAUD FORMULA:
+    UART1_FBRD_R = 11;                        // SET FRACTIONAL PART OF BAUD RATE
+    UART1_LCRH_R = 0x62;                      // SET 8-BIT, ODD PARITY, STOP BIT-1
+    UART1_CC_R = 0x00;                        // USE SYSTEM CLOCK
+
+    UART1_CTL_R |= 0x301;                     // ENABLE UART1, RX AND TX
+
 }