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/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* UART driver for emulator */
#include <stdio.h>
#include "board.h"
#include "config.h"
#include "task.h"
#include "uart.h"
static int stopped;
static int int_disabled;
static int init_done;
static void trigger_interrupt(void)
{
if (!int_disabled)
uart_process();
}
int uart_init_done(void)
{
return init_done;
}
void uart_tx_start(void)
{
stopped = 0;
trigger_interrupt();
}
void uart_tx_stop(void)
{
stopped = 1;
}
int uart_tx_stopped(void)
{
return stopped;
}
void uart_tx_flush(void)
{
/* Nothing */
}
int uart_tx_ready(void)
{
return 1;
}
int uart_rx_available(void)
{
return 0;
}
void uart_write_char(char c)
{
printf("%c", c);
fflush(stdout);
}
int uart_read_char(void)
{
/* Should never be called for now */
return 0;
}
void uart_disable_interrupt(void)
{
int_disabled = 1;
}
void uart_enable_interrupt(void)
{
int_disabled = 0;
}
void uart_init(void)
{
init_done = 1;
}
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