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https://github.com/RIOT-OS/RIOT.git
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b72cafb169
In 04ab5a74f3 a bug was introduced in
the calculation of the GPIO port address by refactoring code. This
fixes the issue by extracting the GPIO port first from the pin.
88 lines
1.8 KiB
C
88 lines
1.8 KiB
C
/*
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* Copyright (C) 2015 HAW Hamburg
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* 2016 INRIA
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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_atmega_common
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* @ingroup drivers_periph_gpio
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* @{
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*
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* @file
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* @brief Macros and inline functions for accessing GPIOs of the ATmega
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* family
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*
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* @author René Herthel <rene-herthel@outlook.de>
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* @author Francisco Acosta <francisco.acosta@inria.fr>
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* @author Laurent Navet <laurent.navet@gmail.com>
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*/
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#ifndef ATMEGA_GPIO_H
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#define ATMEGA_GPIO_H
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#include <stddef.h>
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#include <stdio.h>
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#include <avr/interrupt.h>
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#include "cpu.h"
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#include "board.h"
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#include "periph/gpio.h"
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#include "periph_conf.h"
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#include "periph_cpu.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 Extract the pin number of the given pin
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*/
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static inline uint8_t atmega_pin_num(gpio_t pin)
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{
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return (pin & 0x0f);
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}
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/**
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* @brief Extract the port number of the given pin
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*/
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static inline uint8_t atmega_port_num(gpio_t pin)
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{
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return (pin >> 4) & 0x0f;
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}
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/**
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* @brief Generate the PINx address of the given pin.
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*/
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static inline uint16_t atmega_pin_addr(gpio_t pin)
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{
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return (uintptr_t)atmega_gpio_port(atmega_port_num(pin));
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}
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/**
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* @brief Generate the DDRx address of the given pin
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*/
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static inline uint16_t atmega_ddr_addr(gpio_t pin)
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{
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return atmega_pin_addr(pin) + offsetof(atmega_gpio_port_t, ddr);
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}
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/**
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* @brief Generate the PORTx address of the give pin.
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*/
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static inline uint16_t atmega_port_addr(gpio_t pin)
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{
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return atmega_pin_addr(pin) + offsetof(atmega_gpio_port_t, port);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* ATMEGA_GPIO_H */
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/** @} */
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