/****************************************************************************
 *   $Id:: uarttest.c 3635 2012-10-31 00:31:46Z usb00423
 *   Project: NXP LPC8xx USART example
 *
 *   Description:
 *     This file contains USART test modules, main entry, to test USART APIs.
 *
****************************************************************************/
#include "LPC8xx.h"
#include "lpc8xx_clkconfig.h"
#include "lpc8xx_uart.h"

volatile uint32_t UARTLoopbackCount = 0;

extern volatile uint32_t UARTRxCount;
extern volatile uint32_t RxErrorCount;
extern volatile uint8_t UARTRxBuffer[BUFSIZE];

/*****************************************************************************
** Function name:		Main
**
** Descriptions:		Main entry
** parameters:			None
** Returned value:		int
** 
*****************************************************************************/
int main (void) 
{                       /* Main Program */
    uint32_t i, regVal;
	
    SystemCoreClockUpdate();

    CLKOUT_Setup( CLKOUTCLK_SRC_MAIN_CLK );

/*
 * Initialize UARTx pin connect
 * connect the UART0 TXD abd RXD sigals to port pins(P0.4-P0.0)
 */
    regVal = LPC_SWM->PINASSIGN0 & ~( 0xFF << 0 );
    LPC_SWM->PINASSIGN0 = regVal | ( 4 << 0 );				/* P0.4 is UART0 TXD, ASSIGN0(7:0) */
    regVal = LPC_SWM->PINASSIGN0 & ~( 0xFF << 8 );
    LPC_SWM->PINASSIGN0 = regVal | ( 0 << 8 );				/* P0.0 is UART0 RXD. ASSIGN0(15:8) */

    UARTInit(LPC_USART0, 9600);

    UARTSend(LPC_USART0, (uint8_t *)"Hello World!\r\n", 14);
    for ( i = 0; i < 0x10000; i++ );
  
    while ( 1 ){
        if ( UARTRxCount && !RxErrorCount ){
            LPC_USART0->INTENCLR = RXRDY;	/* Disable RXRDY */
            UARTSend( LPC_USART0, (uint8_t *)UARTRxBuffer, UARTRxCount );
            UARTRxCount = 0;
            LPC_USART0->INTENSET = RXRDY;	/* Re-enable RXRDY */
        }
    }
}