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RIOT/boards/arduino-atmega-common/board.c 1.8 KB
a752c7ab   elopes   add first test an...
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  /*
   * Copyright (C) 2014 Freie Universitรคt Berlin, Hinnerk van Bruinehsen
   *               2015 Kaspar Schleiser <kaspar@schleiser.de>
   *               2016 Laurent Navet <laurent.navet@gmail.com>
   *
   * This file is subject to the terms and conditions of the GNU Lesser
   * General Public License v2.1. See the file LICENSE in the top level
   * directory for more details.
   */
  
  /**
   * @ingroup     boards_arduino-atmega-common
   * @{
   *
   * @file
   * @brief       Common implementations for Arduino Atmega boards
   *
   * @author      Hinnerk van Bruinehsen <h.v.bruinehsen@fu-berlin.de>
   * @author      Kaspar Schleiser <kaspar@schleiser.de>
   * @author      Laurent Navet <laurent.navet@gmail.com>
   *
   * @}
   */
  
  #include <stdio.h>
  #include <avr/io.h>
  
  #include "board.h"
  #include "cpu.h"
  #include "uart_stdio.h"
  #include "periph/gpio.h"
  
  void led_init(void);
  void SystemInit(void);
  static int uart_putchar(char c, FILE *stream);
  static int uart_getchar(FILE *stream);
  
  static FILE uart_stdout = FDEV_SETUP_STREAM(uart_putchar, NULL, _FDEV_SETUP_WRITE);
  static FILE uart_stdin = FDEV_SETUP_STREAM(NULL, uart_getchar, _FDEV_SETUP_READ);
  
  void board_init(void)
  {
      /* initialize stdio via USART_0 */
      SystemInit();
  
      /* initialize the CPU */
      cpu_init();
  
      /* initialize the board LED */
      gpio_init(LED0_PIN, GPIO_OUT);
      LED0_OFF;
  
      irq_enable();
  }
  
  /**
   * @brief Initialize the System, initialize IO via UART_0
   */
  void SystemInit(void)
  {
      /* initialize UART_0 for use as stdout */
      uart_stdio_init();
  
      stdout = &uart_stdout;
      stdin = &uart_stdin;
  
      /* Flush stdout */
      puts("\f");
  }
  
  static int uart_putchar(char c, FILE *stream)
  {
      (void) stream;
      uart_stdio_write(&c, 1);
      return 0;
  }
  
  int uart_getchar(FILE *stream)
  {
      (void) stream;
      char c;
      uart_stdio_read(&c, 1);
      return (int)c;
  }