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54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
/*
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* SPDX-FileCopyrightText: 2018 Kaspar Schleiser <kaspar@schleiser.de>
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* SPDX-FileCopyrightText: 2021 Gerson Fernando Budke <nandojve@gmail.com>
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* SPDX-License-Identifier: LGPL-2.1-only
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*/
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/**
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* @{
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*
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* @file
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* @brief Implements common avr8 libc stdio initialization
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*
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* @author Kaspar Schleiser <kaspar@schleiser.de>
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* @author Gerson Fernando Budke <nandojve@gmail.com>
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*
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* @}
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*/
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#include <stdio.h>
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#include <avr/io.h>
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#include "kernel_init.h"
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#include "stdio_uart.h"
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static int _uart_putchar(char c, FILE *stream);
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static int _uart_getchar(FILE *stream);
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static FILE _uart_stdout = FDEV_SETUP_STREAM(_uart_putchar, NULL, _FDEV_SETUP_WRITE);
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static FILE _uart_stdin = FDEV_SETUP_STREAM(NULL, _uart_getchar, _FDEV_SETUP_READ);
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static int _uart_putchar(char c, FILE *stream)
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{
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(void) stream;
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stdio_write(&c, 1);
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return 0;
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}
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static int _uart_getchar(FILE *stream)
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{
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(void) stream;
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char c;
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stdio_read(&c, 1);
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return (int)c;
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}
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void avr8_stdio_init(void)
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{
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early_init();
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stdout = &_uart_stdout;
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stdin = &_uart_stdin;
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/* Flush stdout */
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puts("\f");
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}
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