board_common.h
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/*
* Copyright (C) 2014 Freie Universität Berlin, Hinnerk van Bruinehsen
* 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 board configuration for Arduino Atmega boards
*
* @author Hinnerk van Bruinehsen <h.v.bruinehsen@fu-berlin.de>
* @author Laurent Navet <laurent.navet@gmail.com>
*/
#ifndef BOARD_COMMON_H
#define BOARD_COMMON_H
#include "cpu.h"
#include "arduino_pinmap.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @name STDIO configuration
*
* As the CPU is too slow to handle 115200 baud, we set the default
* baudrate to 9600 for this board
* @{
*/
#define UART_STDIO_BAUDRATE (9600U)
/** @} */
/**
* @name LED pin definitions and handlers
* @{
*/
#ifdef CPU_ATMEGA328P
#define LED0_PIN GPIO_PIN(1, 5)
#define LED0_MASK (1 << DDB5)
#endif
#ifdef CPU_ATMEGA2560
#define LED0_PIN GPIO_PIN(1, 7)
#define LED0_MASK (1 << DDB7)
#endif
#define LED0_ON (PORTB |= LED0_MASK)
#define LED0_OFF (PORTB &= ~LED0_MASK)
#define LED0_TOGGLE (PORTB ^= LED0_MASK)
/** @} */
/**
* @brief Context swap defines
*
* Setup to use PC5 which is pin change interrupt 13 (PCINT13)
* This emulates a software triggered interrupt
*/
#ifdef CPU_ATMEGA328P
#define AVR_CONTEXT_SWAP_INIT do { \
DDRD |= (1 << PD7); \
PCICR |= (1 << PCIE2); \
PCMSK2 |= (1 << PCINT23); \
} while (0)
#define AVR_CONTEXT_SWAP_INTERRUPT_VECT PCINT2_vect
#define AVR_CONTEXT_SWAP_TRIGGER PORTD ^= (1 << PD7)
#endif
#ifdef CPU_ATMEGA2560
#define AVR_CONTEXT_SWAP_INIT do { \
DDRJ |= (1 << PJ6); \
PCICR |= (1 << PCIE1); \
PCMSK1 |= (1 << PCINT15); \
} while (0)
#define AVR_CONTEXT_SWAP_INTERRUPT_VECT PCINT1_vect
#define AVR_CONTEXT_SWAP_TRIGGER PORTJ ^= (1 << PJ6)
#endif
/**
* @name xtimer configuration values
* @{
*/
#define XTIMER_WIDTH (16)
#define XTIMER_HZ (250000UL)
#define XTIMER_BACKOFF (40)
/** @} */
/**
* @brief Initialize board specific hardware, including clock, LEDs and std-IO
*/
void board_init(void);
#ifdef __cplusplus
}
#endif
#endif /* BOARD_COMMON_H */
/** @} */