75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
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/*
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* Copyright 2010 Steffen Vogel, Chair for Operating Systems,
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* RWTH Aachen University
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of MetalSVM.
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*/
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/**
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* @author Steffen Vogel
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* @file arch/x86/include/asm/uart.h
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* @brief COM port related code
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*/
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#ifndef __ARCH_UART_H__
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#define __ARCH_UART_H__
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#include <metalsvm/stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef CONFIG_UART
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/** @brief Initialize VGA output and clear the screen */
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void uart_init(void);
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/** @brief Send a single character to the uart
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*
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* @return The original input character casted to int
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*/
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void uart_putchar(char c);
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/** @brief Receive a single character on the uart
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*
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* @return The original input character casted to int
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*/
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char uart_getchar(void);
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/** @brief Simple string output on screen.
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*
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* If you want a new line you will have to "\\n".
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*
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* @return Length of output in bytes
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*/
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void uart_puts(const char *str);
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/** @brief Simple string output on screen.
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*
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* If you want a new line you will have to "\\n".
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*
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* @return Length of output in bytes
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*/
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int uart_gets(char *str, size_t len);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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