uart.c

/*! \file uart.c \brief UART driver for ARM ADuC7000 16450. */
//*****************************************************************************
//
// File Name    : 'uart.c'
// Title        : UART driver for ARM ADuC7000 16450
// Author       : Pascal Stang - Copyright (C) 2005
// Created      : 2/5/2005
// Revised      : 2/5/2005
// Version      : 0.1
// Target MCU   : Analog Devices ARM ADuC7000 Series
// Editor Tabs  : 4
//
// This code is distributed under the GNU Public License
//      which can be found at http://www.gnu.org/licenses/gpl.txt
//
//*****************************************************************************

#include "aduc7026.h"

#include "global.h"
#include "uart.h"

//! enable and initialize the uart
void uartInit(uint16_t baud, uint32_t mode)
{
    // set port pins for UART
    GP1CON = 0x11;

    COMCON0 = 0x80;
//  COMDIV0 = 0x0C;
    COMDIV0 = 0x0B;
    COMDIV1 = 0x00;
    COMCON0 = 0x07;
}

int uartSendByte(int data)
{
    while(!(COMSTA0 & 0x20))        // wait for TX buffer to empty
        continue;                   // also either WDOG() or swap()

    COMTX = (uint8_t)data;
    return (uint8_t)data;
}

int uartGetByte(void)
{
    if(COMSTA0 & 0x01)              // check if character is available
        return COMRX;               // return character
    return -1;
}

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