#include <LPC21xx.h>                                        // LPC2148 MPU Register
#include "uart0.h"
#include <string.h>
/****************************************************/
void uart_print(unsigned char* str)
{
     unsigned char i = 0;
     for (i=0;i<strlen(str);i++){putchar(str[i]);}

}
/****************************************************/
 void uart_init(void)
{
  PINSEL0 &= 0xFFFFFFF0;                                    // Reset P0.0,P0.1 Pin Config
  PINSEL0 |= 0x00000001;                                    // Select P0.0 = TxD(UART0)
  PINSEL0 |= 0x00000004;                                    // Select P0.1 = RxD(UART0)

  U0LCR &= 0xFC;                                            // Reset Word Select(1:0)
  U0LCR |= 0x03;                                            // Data Bit = 8 Bit
  U0LCR &= 0xFB;                                            // Stop Bit = 1 Bit
  U0LCR &= 0xF7;                                            // Parity = Disable
  U0LCR &= 0xBF;                                            // Disable Break Control
  U0LCR |= 0x80;                                            // Enable Programming of Divisor Latches

  // U0DLM:U0DLL = 60.00 MHz / [16 x Baud]
  //             = 60.00 MHz / [16 x 9600]
  //             = 390.6 = 391 = 0187H
  U0DLM = 0x01;                                             // Program Divisor Latch(391) for 9600 Baud
  U0DLL = 0x87;

  U0LCR &= 0x7F;                                            // Disable Programming of Divisor Latches

  U0FCR |= 0x01;                                            // FIF0 Enable
  U0FCR |= 0x02;                                            // RX FIFO Reset
  U0FCR |= 0x04;                                            // TX FIFO Reset
  U0FCR &= 0x3F;
}

/****************************/
/* Write Character To UART0 */
/****************************/
int putchar (int ch)
{
  if (ch == '\n')
  {
    while (!(U0LSR & 0x20));                                // Wait TXD Buffer Empty
    U0THR = 0x0D;                                           // Write CR
  }
  while (!(U0LSR & 0x20));                                  // Wait TXD Buffer Empty
  return (U0THR = ch);                                      // Write Character
}

/*****************************/
/* Read Character From UART0 */
/*****************************/
int getchar (void)
{
  while (!(U0LSR & 0x01));                                  // Wait RXD Receive Data Ready
  return (U0RBR);                                           // Get Receice Data & Return
}