mirror of
https://github.com/RIOT-OS/RIOT.git
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111 lines
2.6 KiB
C
111 lines
2.6 KiB
C
/*
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* Copyright (C) 2014 Freie Universität Berlin, Hinnerk van Bruinehsen
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* 2016 Laurent Navet <laurent.navet@gmail.com>
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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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* @defgroup boards_arduino-atmega-common Arduino common
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* @ingroup boards
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* @brief Board specific files for the arduino Uno and
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* @brief Duemilanove boards.
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* @{
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*
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* @file
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* @brief Board specific definitions for the arduino Uno and
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* @brief Duemilanove boards.
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*
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* @author Hinnerk van Bruinehsen <h.v.bruinehsen@fu-berlin.de>
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* @author Laurent Navet <laurent.navet@gmail.com>
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*/
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#ifndef BOARD_COMMON_H
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#define BOARD_COMMON_H
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#include "cpu.h"
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#include "arduino_pinmap.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @name STDIO configuration
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*
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* As the CPU is too slow to handle 115200 baud, we set the default
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* baudrate to 9600 for this board
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* @{
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*/
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#define UART_STDIO_BAUDRATE (9600U)
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/** @} */
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/**
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* @name LED pin definitions and handlers
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* @{
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*/
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#ifdef CPU_ATMEGA328P
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#define LED0_PIN GPIO_PIN(1, 5)
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#define LED0_MASK (1 << DDB5)
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#endif
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#ifdef CPU_ATMEGA2560
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#define LED0_PIN GPIO_PIN(1, 7)
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#define LED0_MASK (1 << DDB7)
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#endif
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#define LED0_ON (PORTB |= LED0_MASK)
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#define LED0_OFF (PORTB &= ~LED0_MASK)
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#define LED0_TOGGLE (PORTB ^= LED0_MASK)
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/** @} */
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/**
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* @brief Context swap defines
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*
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* Setup to use PC5 which is pin change interrupt 13 (PCINT13)
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* This emulates a software triggered interrupt
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*/
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#ifdef CPU_ATMEGA328P
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#define AVR_CONTEXT_SWAP_INIT do { \
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DDRC |= (1 << PC5); \
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PCICR |= (1 << PCIE1); \
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PCMSK1 |= (1 << PCINT13); \
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} while (0)
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#define AVR_CONTEXT_SWAP_INTERRUPT_VECT PCINT1_vect
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#define AVR_CONTEXT_SWAP_TRIGGER PORTC ^= (1 << PC5)
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#endif
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#ifdef CPU_ATMEGA2560
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#define AVR_CONTEXT_SWAP_INIT do { \
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DDRJ |= (1 << PJ6); \
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PCICR |= (1 << PCIE1); \
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PCMSK1 |= (1 << PCINT15); \
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} while (0)
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#define AVR_CONTEXT_SWAP_INTERRUPT_VECT PCINT1_vect
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#define AVR_CONTEXT_SWAP_TRIGGER PORTJ ^= (1 << PJ6)
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#endif
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/**
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* @name xtimer configuration values
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* @{
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*/
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#define XTIMER_WIDTH (16)
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#define XTIMER_SHIFT (2)
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#define XTIMER_HZ (250000UL)
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#define XTIMER_BACKOFF (40)
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/** @} */
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/**
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* @brief Initialize board specific hardware, including clock, LEDs and std-IO
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*/
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void board_init(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* BOARD_COMMON_H */
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/** @} */
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