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04ab5a74f3
Co-authored-by: Gunar Schorcht <gunar@schorcht.net> Co-authored-by: Alexandre Abadie <alexandre.abadie@inria.fr>
107 lines
2.3 KiB
C
107 lines
2.3 KiB
C
/*
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* Copyright (C) 2015 HAW Hamburg
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* 2016 Freie Universität Berlin
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* 2018 Matthew Blue
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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 cpu_atmega1284p
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* @{
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*
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* @file
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* @brief CPU specific definitions for internal peripheral handling
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*
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* @author René Herthel <rene-herthel@outlook.de>
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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* @author Matthew Blue <matthew.blue.neuro@gmail.com>
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*/
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#ifndef PERIPH_CPU_H
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#define PERIPH_CPU_H
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#include "periph_cpu_common.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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* @brief Define a CPU specific GPIO pin generator macro
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*/
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#define GPIO_PIN(x, y) ((x << 4) | y)
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/**
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* @brief Available ports on the ATmega1284p family
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*/
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enum {
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PORT_A = 0, /**< port A */
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PORT_B = 1, /**< port B */
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PORT_C = 2, /**< port C */
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PORT_D = 3 /**< port D */
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};
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/**
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* @brief Available external interrupt pins on the ATmega1284p family
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*
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* In order of their interrupt number
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*/
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#define CPU_ATMEGA_EXT_INTS { GPIO_PIN(PORT_D, 2), \
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GPIO_PIN(PORT_D, 3), \
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GPIO_PIN(PORT_B, 2) }
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/**
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* @brief Get the interrupt vector number of the given GPIO pin
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*/
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static inline uint8_t atmega_pin2exti(uint8_t port_num, uint8_t pin_num)
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{
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if (port_num == PORT_B) {
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return 2;
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}
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return pin_num - 2;
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}
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/**
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* @brief Check if the given pin can be used as external interrupt
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*/
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static inline bool atmega_has_pin_exti(uint8_t port_num, uint8_t pin_num)
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{
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switch (port_num) {
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default:
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return false;
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case PORT_D:
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return ((pin_num == 2) || (pin_num == 3));
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case PORT_B:
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return pin_num == 2;
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}
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}
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/**
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* @name Defines for the I2C interface
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* @{
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*/
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#define I2C_PORT_REG PORTC
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#define I2C_PIN_MASK (1 << PORTC0) | (1 << PORTC1)
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/** @} */
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/**
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* @name EEPROM configuration
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* @{
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*/
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#define EEPROM_SIZE (4096U) /* 4kB */
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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#include "periph_conf.h"
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#include "default_timer_config.h"
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#endif /* PERIPH_CPU_H */
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/** @} */
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