/*
 * Copyright (C) 2014 INRIA
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */

/**
 * @ingroup boards
 * @{
 */

/**
 * @file
 * @brief       msb-430 common putchar implementation
 *
 * @author      Oliver Hahm <oliver.hahm@inria.fr>
 * @author      Kaspar Schleiser <kaspar@schleiser.de>
 */

#include <stdio.h>
#include "board.h"
#include "kernel.h"

#include "board_uart0.h"

#define UART1_TX                        TXBUF1
#define UART1_WAIT_TXDONE()       while( (UTCTL1 & TXEPT) == 0 ) { _NOP(); }


int putchar(int c)
{
    UART1_TX = c;
    UART1_WAIT_TXDONE();

    if (c == 10) {
        UART1_WAIT_TXDONE();
    }

    return c;
}

void usart0irq(void);
/**
 * \brief the interrupt function
 */
interrupt(USART1RX_VECTOR) usart0irq(void)
{
    U1TCTL &= ~URXSE; /* Clear the URXS signal */
    U1TCTL |= URXSE;  /* Re-enable URXS - needed here?*/
    /* Check status register for receive errors. */
    if(U1RCTL & RXERR) {
        if (U1RCTL & FE) {
           puts("rx framing error");
        }
        if (U1RCTL & OE) {
            puts("rx overrun error");
        }
        if (U1RCTL & PE) {
            puts("rx parity error");
        }
        if (U1RCTL & BRK) {
            puts("rx break error");
        }
        /* Clear error flags by forcing a dummy read. */
        volatile int c = U1RXBUF;
        (void) c;
    }
#ifdef MODULE_UART0
    else if (uart0_handler_pid != KERNEL_PID_UNDEF) {
        volatile int c = U1RXBUF;
        uart0_handle_incoming(c);
        uart0_notify_thread();
    }
#endif
}