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82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
/*
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* Copyright (C) 2014 Freie Universität Berlin, Hinnerk van Bruinehsen
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* 2015 Kaspar Schleiser <kaspar@schleiser.de>
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup boards_arduino-mega2560
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* @{
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*
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* @file
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* @brief Board specific implementations for the Arduino Mega 2560 board
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*
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* @author Hinnerk van Bruinehsen <h.v.bruinehsen@fu-berlin.de>
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* @author Kaspar Schleiser <kaspar@schleiser.de>
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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 "board.h"
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#include "cpu.h"
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#include "uart_stdio.h"
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void led_init(void);
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void SystemInit(void);
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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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void board_init(void)
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{
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/* initialize stdio via USART_0 */
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SystemInit();
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/* initialize the CPU */
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cpu_init();
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/* initialize the board LED (connected to pin PB7) */
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DDRB |= (1 << DDB7);
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PORTB &= ~(1 << 7);
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irq_enable();
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}
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/**
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* @brief Initialize the System, initialize IO via UART_0
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*/
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void SystemInit(void)
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{
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/* initialize UART_0 for use as stdout */
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uart_stdio_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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static int uart_putchar(char c, FILE *stream)
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{
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(void) stream;
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uart_stdio_write(&c, 1);
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return 0;
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}
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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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uart_stdio_read(&c, 1);
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return (int)c;
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}
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