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/* Copyright 2018 SiFive, Inc */
/* SPDX-License-Identifier: Apache-2.0 */
#ifndef METAL__TTY_H
#define METAL__TTY_H
/*!
* @file tty.h
* @brief API for emulated serial teriminals
*/
/*!
* @brief Write a character to the default output device
*
* Write a character to the default output device, which for most
* targets is the UART serial port.
*
* @param c The character to write to the terminal
* @return 0 on success, or -1 on failure.
*/
int metal_tty_putc(int c);
/*!
* @brief Get a byte from the default output device
*
* The default output device, is typically the UART serial port.
*
* This call is non-blocking, if nothing is ready c==-1
* if something is ready, then c=[0x00 to 0xff] byte value.
*
* @return 0 on success, or -1 on failure.
*/
int metal_tty_getc(int *c);
#endif
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