34 lines
1.3 KiB
C
34 lines
1.3 KiB
C
/******************************************************************************/
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/* SERIAL.C: Low Level Serial Routines */
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/******************************************************************************/
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/* This file is part of the uVision/ARM development tools. */
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/* Copyright (c) 2005-2006 Keil Software. All rights reserved. */
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/* This software may only be used under the terms of a valid, current, */
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/* end user licence from KEIL for a compatible version of KEIL software */
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/* development tools. Nothing else gives you the right to use this software. */
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/******************************************************************************/
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#include "LPC13Uxx.h" /* LPC13Uxx definitions */
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#include "uart.h"
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#define CR 0x0D
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/* implementation of putchar (also used by printf function to output data) */
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int sendchar (int ch) { /* Write character to Serial Port */
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if (ch == '\n') {
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while (!(LPC_USART->LSR & 0x20));
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LPC_USART->THR = CR; /* output CR */
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}
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while (!(LPC_USART->LSR & 0x20));
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return (LPC_USART->THR = ch);
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}
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int getkey (void) { /* Read character from Serial Port */
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while (!(LPC_USART->LSR & 0x01));
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return (LPC_USART->RBR);
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}
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