mirror of
https://github.com/RIOT-OS/RIOT.git
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151 lines
4.0 KiB
C
151 lines
4.0 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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* @ingroup boards_arduino-atmega-common
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* @{
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*
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* @file
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* @brief Common configuration of MCU periphery for Arduino Atmega 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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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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*/
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#ifndef PERIPH_CONF_H
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#define PERIPH_CONF_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 Clock configuration
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* @{
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*/
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#define CLOCK_CORECLOCK (16000000L)
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/** @} */
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/**
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* @name Timer configuration
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*
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* arduino uno and arduino duemilanove:
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* The timer driver only supports the 16-bit timer (Timer1)
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* so this is the only one we can use here.
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*
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* arduino mega2560:
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* The timer driver only supports the four 16-bit timers (Timer1, Timer3,
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* Timer4, Timer5), so those are the only onces we can use here.
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*
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* @{
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*/
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#ifdef CPU_ATMEGA328P
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#define TIMER_NUMOF (2U)
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#define TIMER_0 MEGA_TIMER1
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#define TIMER_0_MASK &TIMSK1
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#define TIMER_0_FLAG &TIFR1
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#define TIMER_0_ISRA TIMER1_COMPA_vect
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#define TIMER_0_ISRB TIMER1_COMPB_vect
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#endif
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#ifdef CPU_ATMEGA2560
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#define TIMER_NUMOF (2U)
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#define TIMER_0 MEGA_TIMER1
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#define TIMER_0_MASK &TIMSK1
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#define TIMER_0_FLAG &TIFR1
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#define TIMER_0_ISRA TIMER1_COMPA_vect
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#define TIMER_0_ISRB TIMER1_COMPB_vect
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#define TIMER_0_ISRC TIMER1_COMPC_vect
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#define TIMER_1 MEGA_TIMER4
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#define TIMER_1_MASK &TIMSK4
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#define TIMER_1_FLAG &TIFR4
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#define TIMER_1_ISRA TIMER4_COMPA_vect
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#define TIMER_1_ISRB TIMER4_COMPB_vect
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#define TIMER_1_ISRC TIMER4_COMPC_vect
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#endif
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/** @} */
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/**
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* @name UART configuration
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*
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* The UART devices have fixed pin mappings, so all we need to do, is to specify
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* which devices we would like to use and their corresponding RX interrupts. See
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* the reference manual for the fixed pin mapping.
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*
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* @{
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*/
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#ifdef CPU_ATMEGA328P
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#define UART_NUMOF (1U)
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#define UART_0 MEGA_UART0
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#define UART_0_ISR USART_RX_vect
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#endif
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#ifdef CPU_ATMEGA2560
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#define UART_NUMOF (4U)
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#define UART_0 MEGA_UART0
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#define UART_0_ISR USART0_RX_vect
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#define UART_1 MEGA_UART1
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#define UART_1_ISR USART1_RX_vect
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#define UART_2 MEGA_UART2
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#define UART_2_ISR USART2_RX_vect
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#define UART_3 MEGA_UART3
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#define UART_3_ISR USART3_RX_vect
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#endif
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/** @} */
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/**
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* @name SPI configuration
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*
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* The atmega2560/atmega1281/atmega328p has only one hardware SPI with fixed pin
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* configuration, so all we can do here, is to enable or disable it...
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*
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* The fixed pins for arduino uno and duemilanove (atmega328p) are:
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* MOSI - PB3 (Arduino pin 11)
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* MISO - PB4 (Arduino pin 12)
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* SCK - PB5 (Arduino pin 13)
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* SS - PB2 (Arduino pin 10) -> this pin is configured as output, but not used
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*
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* The fixed pins for arduino-mega2560 and atmega1281 are:
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* MOSI - PB2 (Arduino pin 51)
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* MISO - PB3 (Arduino pin 50)
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* SCK - PB1 (Arduino pin 52)
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* SS - PB0 (Arduino pin 53) -> this pin is configured as output, but not used
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*
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* The SS pin must be configured as output for the SPI device to work as
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* master correctly, though we do not use it for now (as we handle the chip
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* select externally for now)
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*
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* @{
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*/
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#define SPI_NUMOF 1 /* set to 0 to disable SPI */
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#ifdef CPU_ATMEGA328P
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#define MEGA_PRR PRR /* Power Reduction Register is PRR */
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#endif
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#ifdef CPU_ATMEGA2560
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#define MEGA_PRR PRR0 /* Power Reduction Register is PRR0 */
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#endif
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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#endif /* PERIPH_CONF_H */
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