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RIOT/boards/arduino-atmega-common/include/periph_conf.h 3.83 KB
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  /*
   * Copyright (C) 2014 Freie Universitรคt 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 configuration of MCU periphery for Arduino Atmega boards
   *
   * @author      Hinnerk van Bruinehsen <h.v.bruinehsen@fu-berlin.de>
   * @author      Laurent Navet <laurent.navet@gmail.com>
   * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
   */
  
  #ifndef PERIPH_CONF_H
  #define PERIPH_CONF_H
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /**
   * @name    Clock configuration
   * @{
   */
  #define CLOCK_CORECLOCK     (16000000L)
  /** @} */
  
  /**
   * @name    Timer configuration
   *
   * arduino uno and arduino duemilanove:
   * The timer driver only supports the 16-bit timer (Timer1)
   * so this is the only one we can use here.
   *
   * arduino mega2560:
   * The timer driver only supports the four 16-bit timers (Timer1, Timer3,
   * Timer4, Timer5), so those are the only onces we can use here.
   *
   * @{
   */
  #ifdef CPU_ATMEGA328P
  #define TIMER_NUMOF         (2U)
  
  #define TIMER_0             MEGA_TIMER1
  #define TIMER_0_MASK        &TIMSK1
  #define TIMER_0_FLAG        &TIFR1
  #define TIMER_0_ISRA        TIMER1_COMPA_vect
  #define TIMER_0_ISRB        TIMER1_COMPB_vect
  #endif
  
  #ifdef CPU_ATMEGA2560
  #define TIMER_NUMOF         (2U)
  
  #define TIMER_0             MEGA_TIMER1
  #define TIMER_0_MASK        &TIMSK1
  #define TIMER_0_FLAG        &TIFR1
  #define TIMER_0_ISRA        TIMER1_COMPA_vect
  #define TIMER_0_ISRB        TIMER1_COMPB_vect
  #define TIMER_0_ISRC        TIMER1_COMPC_vect
  
  #define TIMER_1             MEGA_TIMER4
  #define TIMER_1_MASK        &TIMSK4
  #define TIMER_1_FLAG        &TIFR4
  #define TIMER_1_ISRA        TIMER4_COMPA_vect
  #define TIMER_1_ISRB        TIMER4_COMPB_vect
  #define TIMER_1_ISRC        TIMER4_COMPC_vect
  #endif
  /** @} */
  
  /**
   * @name    UART configuration
   *
   * The UART devices have fixed pin mappings, so all we need to do, is to specify
   * which devices we would like to use and their corresponding RX interrupts. See
   * the reference manual for the fixed pin mapping.
   *
   * @{
   */
  #ifdef CPU_ATMEGA328P
  #define UART_NUMOF          (1U)
  
  #define UART_0              MEGA_UART0
  #define UART_0_ISR          USART_RX_vect
  #endif
  
  #ifdef CPU_ATMEGA2560
  #define UART_NUMOF          (4U)
  
  #define UART_0              MEGA_UART0
  #define UART_0_ISR          USART0_RX_vect
  
  #define UART_1              MEGA_UART1
  #define UART_1_ISR          USART1_RX_vect
  
  #define UART_2              MEGA_UART2
  #define UART_2_ISR          USART2_RX_vect
  
  #define UART_3              MEGA_UART3
  #define UART_3_ISR          USART3_RX_vect
  #endif
  /** @} */
  
  /**
   * @name    SPI configuration
   *
   * The atmega2560/atmega1281/atmega328p has only one hardware SPI with fixed pin
   * configuration, so all we can do here, is to enable or disable it...
   *
   * The fixed pins for arduino uno and duemilanove (atmega328p) are:
   * MOSI - PB3 (Arduino pin 11)
   * MISO - PB4 (Arduino pin 12)
   * SCK  - PB5 (Arduino pin 13)
   * SS   - PB2 (Arduino pin 10) -> this pin is configured as output, but not used
   *
   * The fixed pins for arduino-mega2560 and atmega1281 are:
   * MOSI - PB2 (Arduino pin 51)
   * MISO - PB3 (Arduino pin 50)
   * SCK  - PB1 (Arduino pin 52)
   * SS   - PB0 (Arduino pin 53) -> this pin is configured as output, but not used
   *
   * The SS pin must be configured as output for the SPI device to work as
   * master correctly, though we do not use it for now (as we handle the chip
   * select externally for now)
   *
   * @{
   */
  #define SPI_NUMOF           1           /* set to 0 to disable SPI */
  /** @} */
  
  /**
   * @brief    I2C configuration
   */
  #define I2C_NUMOF           1
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* PERIPH_CONF_H */