Nano.hh

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#ifndef COSA_BOARD_ARDUINO_NANO_HH
#define COSA_BOARD_ARDUINO_NANO_HH

/* This board is based on ATmega328P */
#define BOARD_ATMEGA328P

#if !defined(UNUSED)
#define UNUSED(x) (void) (x)
#endif

class Board {
  friend class Pin;
  friend class GPIO;
  friend class UART;
private:
  Board() {}

  static volatile uint8_t* SFR(uint8_t pin)
    __attribute__((always_inline))
  {
    return (pin < 8  ? &PIND :
            pin < 14 ? &PINB :
                       &PINC);
  }

  static uint8_t BIT(uint8_t pin)
    __attribute__((always_inline))
  {
    return (pin < 8  ? pin :
            pin < 14 ? pin - 8 :
                       pin - 14);
  }

  static volatile uint8_t* PCIMR(uint8_t pin)
    __attribute__((always_inline))
  {
    return (pin < 8  ? &PCMSK2 :
            pin < 14 ? &PCMSK0 :
                       &PCMSK1);
  }

  static volatile uint8_t* UART(uint8_t port)
    __attribute__((always_inline))
  {
    UNUSED(port);
    return (&UCSR0A);
  }

public:
  static void init() {}

  enum DigitalPin {
    D0 = 0,                     // PD0
    D1,                         // PD1
    D2,                         // PD2
    D3,                         // PD3
    D4,                         // PD4
    D5,                         // PD5
    D6,                         // PD6
    D7,                         // PD7
    D8,                         // PB0
    D9,                         // PB1
    D10,                        // PB2
    D11,                        // PB3
    D12,                        // PB4
    D13,                        // PB5
    D14,                        // PC0
    D15,                        // PC1
    D16,                        // PC2
    D17,                        // PC3
    D18,                        // PC4
    D19,                        // PC5
    LED = D13
  } __attribute__((packed));

  enum AnalogPin {
    A0 = 0,                     // PC0/D14
    A1,                         // PC1/D15
    A2,                         // PC2/D16
    A3,                         // PC3/D17
    A4,                         // PC4/D18
    A5,                         // PC5/D19
    A6,                         // Pin only
    A7                          // Pin only
  } __attribute__((packed));

  enum Reference {
    APIN_REFERENCE = 0,
    AVCC_REFERENCE = _BV(REFS0),
    A1V1_REFERENCE = (_BV(REFS1) | _BV(REFS0))
  } __attribute__((packed));

  enum PWMPin {
    PWM0 = D3,                  // PD3 => OCR2B
    PWM1 = D5,                  // PD5 => OCR0B
    PWM2 = D6,                  // PD6 => OCR0A
    PWM3 = D9,                  // PB1 => OCR1A
    PWM4 = D10,                 // PB2 => OCR1B
    PWM5 = D11                  // PB3 => OCR2A
  } __attribute__((packed));

  enum ExternalInterruptPin {
    EXT0 = D2,                  // PD2
    EXT1 = D3                   // PD3
  } __attribute__((packed));

  enum InterruptPin {
    PCI0 = D0,                  // PD0
    PCI1 = D1,                  // PD1
    PCI2 = D2,                  // PD2
    PCI3 = D3,                  // PD3
    PCI4 = D4,                  // PD4
    PCI5 = D5,                  // PD5
    PCI6 = D6,                  // PD6
    PCI7 = D7,                  // PD7
    PCI8 = D8,                  // PB0
    PCI9 = D9,                  // PB1
    PCI10 = D10,                // PB2
    PCI11 = D11,                // PB3
    PCI12 = D12,                // PB4
    PCI13 = D13,                // PB5
    PCI14 = D14,                // PC0
    PCI15 = D15,                // PC1
    PCI16 = D16,                // PC2
    PCI17 = D17,                // PC3
    PCI18 = D18,                // PC4
    PCI19 = D19                 // PC5
  } __attribute__((packed));

  enum {
    ANALOG_PIN_MAX = 8,
    DIGITAL_PIN_MAX = 20,
    EXT_PIN_MAX = 2,
    PCI_PIN_MAX = 20,
    PWM_PIN_MAX = 6
  };

  enum TWIPin {
    SDA = 4,                    // PC4/A4
    SCL = 5                     // PC5/A5
  } __attribute__((packed));

  enum SPIPin {
    SS = 2,                     // PB2/D10
    MOSI = 3,                   // PB3/D11/ICSP
    MISO = 4,                   // PB4/D12/ICSP
    SCK = 5                     // PB5/D13/ICSP
  } __attribute__((packed));

  enum {
    VBG = (_BV(MUX3) | _BV(MUX2) | _BV(MUX1)),
    UART_MAX = 1,
    EXT_MAX = 2,
    PCMSK_MAX = 3,
    PCINT_MAX = 24
  } __attribute__((packed));
};

extern "C" {
  void ADC_vect(void) __attribute__ ((signal));
  void ANALOG_COMP_vect(void) __attribute__ ((signal));
  void INT0_vect(void) __attribute__ ((signal));
  void INT1_vect(void) __attribute__ ((signal));
  void PCINT0_vect(void) __attribute__ ((signal));
  void PCINT1_vect(void) __attribute__ ((signal));
  void PCINT2_vect(void) __attribute__ ((signal));
  void SPI_STC_vect(void) __attribute__ ((signal));
  void TIMER0_COMPA_vect(void) __attribute__ ((signal));
  void TIMER0_COMPB_vect(void) __attribute__ ((signal));
  void TIMER0_OVF_vect(void) __attribute__ ((signal));
  void TIMER1_CAPT_vect(void)  __attribute__ ((signal));
  void TIMER1_COMPA_vect(void) __attribute__ ((signal));
  void TIMER1_COMPB_vect(void) __attribute__ ((signal));
  void TIMER1_OVF_vect(void) __attribute__ ((signal));
  void TIMER2_COMPA_vect(void) __attribute__ ((signal));
  void TIMER2_COMPB_vect(void) __attribute__ ((signal));
  void TIMER2_OVF_vect(void) __attribute__ ((signal));
  void TWI_vect(void) __attribute__ ((signal));
  void WDT_vect(void) __attribute__ ((signal));
  void USART_RX_vect(void) __attribute__ ((signal));
  void USART_TX_vect(void) __attribute__ ((signal));
  void USART_UDRE_vect(void) __attribute__ ((signal));
}
#endif