avr8 – ページ 17 – Sasapea's Lab

久しぶりにATtiny202を使ってみたらプログラム領域が少ないため公開されているライブラリが使えずＨＷ直接アクセスするコードを書かなければいけなかったりして何かと面倒なので手始めにGPIOライブラリを作ってみた。

関数引数に定数を指定したときが高速かつ最小なコードになるが、ビルドモードや関数引数が定数かどうかを判断し適切かつ最小なコードが生成されるようにしてみたことやピン変化によるＨＷ割込み処理にも対応してみた。ちなみにＨＷ割込み処理を使うと意外にコードが大きくなってしまうためＨＷ割込み処理を使わずに同じことができるポーリング処理にも対応。単純な処理のみならポーリングでＯＫかも。

自作にあたって特に悩んだのはシフト演算を使うと巨大かつ遅いコードになりがちなこと。そのためシフト演算なしですむようGPIOピン定義にそのビット位置とビットマスク値を含めている。

【生成されるコードの例(疑似コード)】

Port::digitalWrite(Port::PA0, Port::LOW);
------------------------------------------
cbi VPORTA.OUT, 0
  or
sts PORTA.OUTCLR, 1

Port::digitalWrite(Port::PA0, Port::LOW);

------------------------------------------

cbi VPORTA.OUT, 0

sts PORTA.OUTCLR, 1

Port::digitalWrite(Port::PA0, Port::HIGH);
------------------------------------------
sbi VPORTA.OUT, 0
  or
sts PORTA.OUTSET, 1

Port::digitalWrite(Port::PA0, Port::HIGH);

------------------------------------------

sbi VPORTA.OUT, 0

sts PORTA.OUTSET, 1

Port::digitalWrite(Port::PA0, Port::TOGGLE);
------------------------------------------
sbi VPORTA.IN, 0
  or
sts PORTA.OUTTGL, 1

Port::digitalWrite(Port::PA0, Port::TOGGLE);

------------------------------------------

sbi VPORTA.IN, 0

sts PORTA.OUTTGL, 1

ＨＷ割込みを使うには
[avr8_config.h] #define CONFIG_PORT_ISR 1
に設定する。

【サンプルコード (Microchip Studio)】

#include "avr8_port.h"

void callback(uint8_t value, uint8_t flags)
{
  /* value ... port value */
  /* flags ... port interrupt status */
}

int main(void)
{
  /* Enable Interrupt */
  sei();

  /* INPUT MODE */
  Port::pinMode(Port::PA0, Port::INPUT);
  Port::digitalRead(Port::PA0);

  /* INPUT_PULLUP MODE */
  Port::pinMode(Port::PA0, Port::INPUT_PULLUP);
  Port::digitalRead(Port::PA0);

  /* OUTPUT MODE */
  Port::pinMode(Port::PA0, Port::OUTPUT);
  Port::digitalWrite(Port::PA0, Port::LOW);
  Port::digitalWrite(Port::PA0, Port::HIGH);
  Port::digitalWrite(Port::PA0, Port::TOGGLE);

  /* OPEN DRAIN MODE */
  Port::pinMode(Port::PA0, Port::OPEN_DRAIN);
  Port::digitalWriteOD(Port::PA0, Port::LOW);
  Port::digitalWriteOD(Port::PA0, Port::HIGH);
  Port::digitalWriteOD(Port::PA0, Port::TOGGLE);

  /* OPEN SOURCE MODE */
  Port::pinMode(Port::PA0, Port::OPEN_SOURCE);
  Port::digitalWriteOS(Port::PA0, Port::LOW);
  Port::digitalWriteOS(Port::PA0, Port::HIGH);
  Port::digitalWriteOS(Port::PA0, Port::TOGGLE);

  /* DISABLE MODE (ADC/AC MODE) */
  Port::pinMode(Port::PA0, Port::DISABLE);

  /* Interrupt Callback */
  Port::interrupt(Port::PA0, Port::ISC_BOTHEDGES, callback);
  Port::interrupt(Port::PA0, Port::ISC_RISING   , callback);
  Port::interrupt(Port::PA0, Port::ISC_FALLING  , callback);
  Port::interrupt(Port::PA0, Port::ISC_LEVEL    , callback);

  /* GPIO Interrupt Polling */
  Port::poll();

  return 0;
}

#include "avr8_port.h"

void callback(uint8_t value, uint8_t flags)

{

/* value ... port value */

/* flags ... port interrupt status */

}

int main(void)

{

/* Enable Interrupt */

sei();

/* INPUT MODE */

Port::pinMode(Port::PA0, Port::INPUT);

Port::digitalRead(Port::PA0);

/* INPUT_PULLUP MODE */

Port::pinMode(Port::PA0, Port::INPUT_PULLUP);

Port::digitalRead(Port::PA0);

/* OUTPUT MODE */

Port::pinMode(Port::PA0, Port::OUTPUT);

Port::digitalWrite(Port::PA0, Port::LOW);

Port::digitalWrite(Port::PA0, Port::HIGH);

Port::digitalWrite(Port::PA0, Port::TOGGLE);

/* OPEN DRAIN MODE */

Port::pinMode(Port::PA0, Port::OPEN_DRAIN);

Port::digitalWriteOD(Port::PA0, Port::LOW);

Port::digitalWriteOD(Port::PA0, Port::HIGH);

Port::digitalWriteOD(Port::PA0, Port::TOGGLE);

/* OPEN SOURCE MODE */

Port::pinMode(Port::PA0, Port::OPEN_SOURCE);

Port::digitalWriteOS(Port::PA0, Port::LOW);

Port::digitalWriteOS(Port::PA0, Port::HIGH);

Port::digitalWriteOS(Port::PA0, Port::TOGGLE);

/* DISABLE MODE (ADC/AC MODE) */

Port::pinMode(Port::PA0, Port::DISABLE);

/* Interrupt Callback */

Port::interrupt(Port::PA0, Port::ISC_BOTHEDGES, callback);

Port::interrupt(Port::PA0, Port::ISC_RISING , callback);

Port::interrupt(Port::PA0, Port::ISC_FALLING , callback);

Port::interrupt(Port::PA0, Port::ISC_LEVEL , callback);

/* GPIO Interrupt Polling */

Port::poll();

return 0;

}

【修正履歴】
2025-10-17
割込み処理のコードをシンプルにしてみた。色々試してみたらATtinyは問題ないけどDx/Ex系でコンパイルするとコンパイラの最適化の仕方が変わるのか複雑かつ大きめなコードになるのが気になったりする。それとGPIO以外のライブリを作ろうとしてDx/Ex系も対応しようとしてみたら同一機能の#defineの定義名がＤＦＰバージョンやＣＰＵによって違うとか、同じ定義名なのに大文字／小文字の違いがあるとか、#defineの定義名ならコードを切り替えることもできるけどtypedefやstructのメンバー名に違いがあるとかは判断できないしでとにかく共通化はウルトラ大変だ。統一化のためにＤＦＰの定義名を変更したりすると世界中で悲鳴が上がったりするのだろうが今のうちになんとかしたほうがいいんじゃないのかな．．．と思ったりもした今日この頃．．．

【ライブラリ】

/*
  avr8_port.h - Port Driver for Microchip AVR8 Series
 
  Copyright (c) 2025 Sasapea's Lab. All right reserved.
 
  This program is free software: you can redistribute it and/or
  modify it under the terms of the GNU General Public License as
  published by the Free Software Foundation, either version 3 of
  the License, or at your option) any later version.
 
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU General Public License for more details.
 
  You should have received a copy of the GNU General Public License
  along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once

#include "avr8_config.h"

#if   defined(PORTG)
  #define PORT_MAX_PORTS 7
#elif defined(PORTF)
  #define PORT_MAX_PORTS 6
#elif defined(PORTE)
  #define PORT_MAX_PORTS 5
#elif defined(PORTD)
  #define PORT_MAX_PORTS 4
#elif defined(PORTC)
  #define PORT_MAX_PORTS 3
#elif defined(PORTB)
  #define PORT_MAX_PORTS 2
#elif defined(PORTA)
  #define PORT_MAX_PORTS 1
#else
  #define PORT_MAX_PORTS 0
#endif

class Port
{
  public:

    /* Pin ID (pindef_t) */
    typedef enum
    {
#if defined(PORTA)
      PA0 = 0x0100,
      PA1 = 0x0210,
      PA2 = 0x0420,
      PA3 = 0x0830,
      PA4 = 0x1040,
      PA5 = 0x2050,
      PA6 = 0x4060,
      PA7 = 0x8070,
#endif
#if defined(PORTB)
      PB0 = 0x0101,
      PB1 = 0x0211,
      PB2 = 0x0421,
      PB3 = 0x0831,
      PB4 = 0x1041,
      PB5 = 0x2051,
      PB6 = 0x4061,
      PB7 = 0x8071,
#endif
#if defined(PORTC)
      PC0 = 0x0102,
      PC1 = 0x0212,
      PC2 = 0x0422,
      PC3 = 0x0832,
      PC4 = 0x1042,
      PC5 = 0x2052,
      PC6 = 0x4062,
      PC7 = 0x8772,
#endif
#if defined(PORTD)
      PD0 = 0x0103,
      PD1 = 0x0213,
      PD2 = 0x0423,
      PD3 = 0x0833,
      PD4 = 0x1043,
      PD5 = 0x2053,
      PD6 = 0x4063,
      PD7 = 0x8073,
#endif
#if defined(PORTE)
      PE0 = 0x0104,
      PE1 = 0x0214,
      PE2 = 0x0424,
      PE3 = 0x0834,
      PE4 = 0x1044,
      PE5 = 0x2054,
      PE6 = 0x4064,
      PE7 = 0x8074,
#endif
#if defined(PORTF)
      PF0 = 0x0105,
      PF1 = 0x0215,
      PF2 = 0x0425,
      PF3 = 0x0835,
      PF4 = 0x1045,
      PF5 = 0x2055,
      PF6 = 0x4065,
      PF7 = 0x8075,
#endif
#if defined(PORTG)
      PG0 = 0x0106,
      PG1 = 0x0216,
      PG2 = 0x0426,
      PG3 = 0x0836,
      PG4 = 0x1046,
      PG5 = 0x2056,
      PG6 = 0x4066,
      PG7 = 0x8076,
#endif
    } PIN;

    /* Pin Mode */
    typedef enum
    {
      DISABLE,
      INPUT,
      INPUT_PULLUP,
      OUTPUT,
      OPEN_DRAIN,
      OPEN_SOURCE,
    } MODE;

    /* Pin Value */
    typedef enum
    {
      LOW,
      HIGH,
      TOGGLE = 0xFF,
      IGNORE = TOGGLE,
    } VAL;

    /* Input/Sense Configuration select */
    typedef enum
    {
      ISC_INTDISABLE    = PORT_ISC_INTDISABLE_gc,     /* Interrupt disabled but input buffer enabled */
      ISC_BOTHEDGES     = PORT_ISC_BOTHEDGES_gc,      /* Sense Both Edges */
      ISC_RISING        = PORT_ISC_RISING_gc,         /* Sense Rising Edge */
      ISC_FALLING       = PORT_ISC_FALLING_gc,        /* Sense Falling Edge */
      ISC_INPUT_DISABLE = PORT_ISC_INPUT_DISABLE_gc,  /* Digital Input Buffer disabled */
      ISC_LEVEL         = PORT_ISC_LEVEL_gc,          /* Sense low Level */
    } ISC;

    /* Type of Callback Function */
    typedef void (*callback_t)(uint8_t value, uint8_t flags);

    static void disable(void)
    {
      for (uint8_t i = 0; i < PORT_MAX_PORTS; ++i)
      {
        PORT_t *port = getPort(i);
        if (port)
        {
          port->PIN0CTRL = PORT_ISC_INPUT_DISABLE_gc;
          port->PIN1CTRL = PORT_ISC_INPUT_DISABLE_gc;
          port->PIN2CTRL = PORT_ISC_INPUT_DISABLE_gc;
          port->PIN3CTRL = PORT_ISC_INPUT_DISABLE_gc;
          port->PIN4CTRL = PORT_ISC_INPUT_DISABLE_gc;
          port->PIN5CTRL = PORT_ISC_INPUT_DISABLE_gc;
          port->PIN6CTRL = PORT_ISC_INPUT_DISABLE_gc;
          port->PIN7CTRL = PORT_ISC_INPUT_DISABLE_gc;
          port->DIR      = 0;
          port->OUT      = 0;
          port->INTFLAGS = 0xFF;
        }
      }
    }

    static void pinMode(PIN pin, MODE mode, VAL value = IGNORE, bool invert = false)
    {
      pindef_t spin = { .port = pin };
      PORT_t *port = getPort(spin.x.port);
      if (port)
      {
        uint8_t ctrl = 0;
        switch (mode)
        {
          case DISABLE:
            ctrl = PORT_ISC_INPUT_DISABLE_gc;
            break;
          case OUTPUT:
            if (value != IGNORE) digitalWrite(pin, value);
            port->DIRSET = spin.x.bmsk;
            break;
          case OPEN_DRAIN:
            digitalWrite(pin, LOW);
            if (value != IGNORE) digitalWriteOD(pin, value);
            ctrl = PORT_PULLUPEN_bm;
            break;
          case OPEN_SOURCE:
            digitalWrite(pin, HIGH);
            if (value == IGNORE) digitalWriteOS(pin, value);
            break;
          case INPUT_PULLUP:
            ctrl = PORT_PULLUPEN_bm;
            /* fall through */
          case INPUT:
            port->DIRCLR = spin.x.bmsk;
            break;
        }
        ((register8_t *)&port->PIN0CTRL)[spin.x.bpos] = ctrl | (invert ? PORT_INVEN_bm : 0);
      }
    }

    /* for pinMode(OUTPUT) */
    static void digitalWrite(PIN pin, VAL value)
    {
      pindef_t spin = { .port = pin };
#if !defined(DEBUG)
      if (__builtin_constant_p(pin))
      {
        switch (spin.x.port)
        {
#if defined(PORTA)
          case 0: if (value == TOGGLE) VPORTA.IN |= spin.x.bmsk; else if (value == LOW) VPORTA.OUT &= ~spin.x.bmsk; else VPORTA.OUT |= spin.x.bmsk; break;
#endif
#if defined(PORTB)
          case 1: if (value == TOGGLE) VPORTB.IN |= spin.x.bmsk; else if (value == LOW) VPORTB.OUT &= ~spin.x.bmsk; else VPORTB.OUT |= spin.x.bmsk; break;
#endif
#if defined(PORTC)
          case 2: if (value == TOGGLE) VPORTC.IN |= spin.x.bmsk; else if (value == LOW) VPORTC.OUT &= ~spin.x.bmsk; else VPORTC.OUT |= spin.x.bmsk; break;
#endif
#if defined(PORTD)
          case 3: if (value == TOGGLE) VPORTD.IN |= spin.x.bmsk; else if (value == LOW) VPORTD.OUT &= ~spin.x.bmsk; else VPORTD.OUT |= spin.x.bmsk; break;
#endif
#if defined(PORTE)
          case 4: if (value == TOGGLE) VPORTE.IN |= spin.x.bmsk; else if (value == LOW) VPORTE.OUT &= ~spin.x.bmsk; else VPORTE.OUT |= spin.x.bmsk; break;
#endif
#if defined(PORTF)
          case 5: if (value == TOGGLE) VPORTF.IN |= spin.x.bmsk; else if (value == LOW) VPORTF.OUT &= ~spin.x.bmsk; else VPORTF.OUT |= spin.x.bmsk; break;
#endif
#if defined(PORTG)
          case 6: if (value == TOGGLE) VPORTG.IN |= spin.x.bmsk; else if (value == LOW) VPORTG.OUT &= ~spin.x.bmsk; else VPORTG.OUT |= spin.x.bmsk; break;
#endif
        }
      }
      else
#endif
      {
        switch (spin.x.port)
        {
#if defined(PORTA)
          case 0: if (value == TOGGLE) PORTA.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTA.OUTCLR = spin.x.bmsk; else PORTA.OUTSET = spin.x.bmsk; break;
#endif
#if defined(PORTB)
          case 1: if (value == TOGGLE) PORTB.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTB.OUTCLR = spin.x.bmsk; else PORTB.OUTSET = spin.x.bmsk; break;
#endif
#if defined(PORTC)
          case 2: if (value == TOGGLE) PORTC.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTC.OUTCLR = spin.x.bmsk; else PORTC.OUTSET = spin.x.bmsk; break;
#endif
#if defined(PORTD)
          case 3: if (value == TOGGLE) PORTD.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTD.OUTCLR = spin.x.bmsk; else PORTD.OUTSET = spin.x.bmsk; break;
#endif
#if defined(PORTE)
          case 4: if (value == TOGGLE) PORTE.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTE.OUTCLR = spin.x.bmsk; else PORTE.OUTSET = spin.x.bmsk; break;
#endif
#if defined(PORTF)
          case 5: if (value == TOGGLE) PORTF.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTF.OUTCLR = spin.x.bmsk; else PORTF.OUTSET = spin.x.bmsk; break;
#endif
#if defined(PORTG)
          case 6: if (value == TOGGLE) PORTG.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTG.OUTCLR = spin.x.bmsk; else PORTG.OUTSET = spin.x.bmsk; break;
#endif
        }
      }
    }

    /* for pinMode(OPEN_DRAIN) */
    static void digitalWriteOD(PIN pin, VAL value)
    {
      pindef_t spin = { .port = pin };
#if !defined(DEBUG)
      if (__builtin_constant_p(pin))
      {
        switch (spin.x.port)
        {
#if defined(PORTA)
          case 0: if (value == TOGGLE) PORTA.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTA.DIR |= spin.x.bmsk; else VPORTA.DIR &= ~spin.x.bmsk; break;
#endif
#if defined(PORTB)
          case 1: if (value == TOGGLE) PORTB.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTB.DIR |= spin.x.bmsk; else VPORTB.DIR &= ~spin.x.bmsk; break;
#endif
#if defined(PORTC)
          case 2: if (value == TOGGLE) PORTC.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTC.DIR |= spin.x.bmsk; else VPORTC.DIR &= ~spin.x.bmsk; break;
#endif
#if defined(PORTD)
          case 3: if (value == TOGGLE) PORTD.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTD.DIR |= spin.x.bmsk; else VPORTD.DIR &= ~spin.x.bmsk; break;
#endif
#if defined(PORTE)
          case 4: if (value == TOGGLE) PORTE.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTE.DIR |= spin.x.bmsk; else VPORTE.DIR &= ~spin.x.bmsk; break;
#endif
#if defined(PORTF)
          case 5: if (value == TOGGLE) PORTF.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTF.DIR |= spin.x.bmsk; else VPORTF.DIR &= ~spin.x.bmsk; break;
#endif
#if defined(PORTG)
          case 6: if (value == TOGGLE) PORTG.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTG.DIR |= spin.x.bmsk; else VPORTG.DIR &= ~spin.x.bmsk; break;
#endif
        }
      }
      else
#endif
      {
        switch (spin.x.port)
        {
#if defined(PORTA)
          case 0: if (value == TOGGLE) PORTA.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTA.DIRSET = spin.x.bmsk; else PORTA.DIRCLR = spin.x.bmsk; break;
#endif
#if defined(PORTB)
          case 1: if (value == TOGGLE) PORTB.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTB.DIRSET = spin.x.bmsk; else PORTB.DIRCLR = spin.x.bmsk; break;
#endif
#if defined(PORTC)
          case 2: if (value == TOGGLE) PORTC.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTC.DIRSET = spin.x.bmsk; else PORTC.DIRCLR = spin.x.bmsk; break;
#endif
#if defined(PORTD)
          case 3: if (value == TOGGLE) PORTD.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTD.DIRSET = spin.x.bmsk; else PORTD.DIRCLR = spin.x.bmsk; break;
#endif
#if defined(PORTE)
          case 4: if (value == TOGGLE) PORTE.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTE.DIRSET = spin.x.bmsk; else PORTE.DIRCLR = spin.x.bmsk; break;
#endif
#if defined(PORTF)
          case 5: if (value == TOGGLE) PORTF.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTF.DIRSET = spin.x.bmsk; else PORTF.DIRCLR = spin.x.bmsk; break;
#endif
#if defined(PORTG)
          case 6: if (value == TOGGLE) PORTG.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTG.DIRSET = spin.x.bmsk; else PORTG.DIRCLR = spin.x.bmsk; break;
#endif
        }
      }        
    }

    /* for pinMode(OPEN_SOURCE) */
    static void digitalWriteOS(PIN pin, VAL value)
    {
      pindef_t spin = { .port = pin };
#if !defined(DEBUG)
      if (__builtin_constant_p(pin))
      {
        switch (spin.x.port)
        {
#if defined(PORTA)
          case 0: if (value == TOGGLE) PORTA.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTA.DIR &= ~spin.x.bmsk; else VPORTA.DIR |= spin.x.bmsk; break;
#endif
#if defined(PORTB)
          case 1: if (value == TOGGLE) PORTB.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTB.DIR &= ~spin.x.bmsk; else VPORTB.DIR |= spin.x.bmsk; break;
#endif
#if defined(PORTC)
          case 2: if (value == TOGGLE) PORTC.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTC.DIR &= ~spin.x.bmsk; else VPORTC.DIR |= spin.x.bmsk; break;
#endif
#if defined(PORTD)
          case 3: if (value == TOGGLE) PORTD.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTD.DIR &= ~spin.x.bmsk; else VPORTD.DIR |= spin.x.bmsk; break;
#endif
#if defined(PORTE)
          case 4: if (value == TOGGLE) PORTE.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTE.DIR &= ~spin.x.bmsk; else VPORTE.DIR |= spin.x.bmsk; break;
#endif
#if defined(PORTF)
          case 5: if (value == TOGGLE) PORTF.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTF.DIR &= ~spin.x.bmsk; else VPORTF.DIR |= spin.x.bmsk; break;
#endif
#if defined(PORTG)
          case 6: if (value == TOGGLE) PORTG.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTG.DIR &= ~spin.x.bmsk; else VPORTG.DIR |= spin.x.bmsk; break;
#endif
        }
      }
      else
#endif
      {
        switch (spin.x.port)
        {
#if defined(PORTA)
          case 0: if (value == TOGGLE) PORTA.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTA.DIRCLR = spin.x.bmsk; else PORTA.DIRSET = spin.x.bmsk; break;
#endif
#if defined(PORTB)
          case 1: if (value == TOGGLE) PORTB.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTB.DIRCLR = spin.x.bmsk; else PORTB.DIRSET = spin.x.bmsk; break;
#endif
#if defined(PORTC)
          case 2: if (value == TOGGLE) PORTC.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTC.DIRCLR = spin.x.bmsk; else PORTC.DIRSET = spin.x.bmsk; break;
#endif
#if defined(PORTD)
          case 3: if (value == TOGGLE) PORTD.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTD.DIRCLR = spin.x.bmsk; else PORTD.DIRSET = spin.x.bmsk; break;
#endif
#if defined(PORTE)
          case 4: if (value == TOGGLE) PORTE.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTE.DIRCLR = spin.x.bmsk; else PORTE.DIRSET = spin.x.bmsk; break;
#endif
#if defined(PORTF)
          case 5: if (value == TOGGLE) PORTF.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTF.DIRCLR = spin.x.bmsk; else PORTF.DIRSET = spin.x.bmsk; break;
#endif
#if defined(PORTG)
          case 6: if (value == TOGGLE) PORTG.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTG.DIRCLR = spin.x.bmsk; else PORTG.DIRSET = spin.x.bmsk; break;
#endif
        }
      }        
    }

    static VAL digitalRead(PIN pin)
    {
      pindef_t spin = { .port = pin };
      switch (spin.x.port)
      {
#if defined(PORTA)
        case 0: return VPORTA.IN & spin.x.bmsk ? HIGH : LOW;
#endif
#if defined(PORTB)
        case 1: return VPORTB.IN & spin.x.bmsk ? HIGH : LOW;
#endif
#if defined(PORTC)
        case 2: return VPORTC.IN & spin.x.bmsk ? HIGH : LOW;
#endif
#if defined(PORTD)
        case 3: return VPORTD.IN & spin.x.bmsk ? HIGH : LOW;
#endif
#if defined(PORTE)
        case 4: return VPORTE.IN & spin.x.bmsk ? HIGH : LOW;
#endif
#if defined(PORTF)
        case 5: return VPORTF.IN & spin.x.bmsk ? HIGH : LOW;
#endif
#if defined(PORTG)
        case 6: return VPORTG.IN & spin.x.bmsk ? HIGH : LOW;
#endif
      }
      return LOW;
    }

    static void interrupt(PIN pin, ISC mode, callback_t func = 0)
    {
      pindef_t spin = { .port = pin };
      PORT_t *port = getPort(spin.x.port);
      if (port)
      {
        register8_t &ctrl = ((register8_t *)&port->PIN0CTRL)[spin.x.bpos];
        if ((mode != ISC_INTDISABLE) && func)
        {
          _callback[spin.x.port] = func;
#if CONFIG_PORT_ISR
          ctrl = (ctrl & ~PORT_ISC_gm) | mode;
#endif
        }
        else
        {
          ctrl = (ctrl & ~PORT_ISC_gm) | ISC_INTDISABLE;
          _callback[spin.x.port] = 0;
        }
      }
    }

    static void poll(void)
    {
#if !CONFIG_TCA_ISR
#if defined(PORTA)
      isr_port(0, VPORTA);
#endif
#if defined(PORTB)
      isr_port(1, VPORTB);
#endif
#if defined(PORTC)
      isr_port(2, VPORTC);
#endif
#if defined(PORTD)
      isr_port(3, VPORTD);
#endif
#if defined(PORTE)
      isr_port(4, VPORTE);
#endif
#if defined(PORTF)
      isr_port(5, VPORTF);
#endif
#if defined(PORTG)
      isr_port(6, VPORTG);
#endif
#endif
    }

  private:

    typedef union
    {
      struct
      {
        uint8_t port: 4;
        uint8_t bpos: 3;
        uint8_t ____: 1;
        uint8_t bmsk: 8;
      } x;
      uint16_t port;
    } pindef_t;

    static callback_t _callback[PORT_MAX_PORTS];

#if CONFIG_PORT_ISR
    friend void port_isr_port(uint8_t ch, VPORT_t &port);
#endif

    static void isr_port(uint8_t ch, VPORT_t &port)
    {
      uint8_t flags = port.INTFLAGS = port.INTFLAGS;
      if (flags && _callback[ch])
        _callback[ch](port.IN, flags);
    }

    static PORT_t *getPort(uint8_t port)
    {
      if (port < PORT_MAX_PORTS)
      {
#if (1 < PORT_MAX_POTS) && !defined(PORTB)
        if (port != 1)
#endif
        return &PORTA + port;
      }
      return 0;
    }
};

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avr8_port.h - Port Driver for Microchip AVR8 Series

This program is free software: you can redistribute it and/or

modify it under the terms of the GNU General Public License as

published by the Free Software Foundation, either version 3 of

the License, or at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program. If not, see <https://www.gnu.org/licenses/>.

#pragma once

#include "avr8_config.h"

#if defined(PORTG)

#define PORT_MAX_PORTS 7

#elif defined(PORTF)

#define PORT_MAX_PORTS 6

#elif defined(PORTE)

#define PORT_MAX_PORTS 5

#elif defined(PORTD)

#define PORT_MAX_PORTS 4

#elif defined(PORTC)

#define PORT_MAX_PORTS 3

#elif defined(PORTB)

#define PORT_MAX_PORTS 2

#elif defined(PORTA)

#define PORT_MAX_PORTS 1

#else

#define PORT_MAX_PORTS 0

#endif

class Port

{

public:

/* Pin ID (pindef_t) */

typedef enum

{

#if defined(PORTA)

PA0 = 0x0100,

PA1 = 0x0210,

PA2 = 0x0420,

PA3 = 0x0830,

PA4 = 0x1040,

PA5 = 0x2050,

PA6 = 0x4060,

PA7 = 0x8070,

#endif

#if defined(PORTB)

PB0 = 0x0101,

PB1 = 0x0211,

PB2 = 0x0421,

PB3 = 0x0831,

PB4 = 0x1041,

PB5 = 0x2051,

PB6 = 0x4061,

PB7 = 0x8071,

#endif

#if defined(PORTC)

PC0 = 0x0102,

PC1 = 0x0212,

PC2 = 0x0422,

PC3 = 0x0832,

PC4 = 0x1042,

PC5 = 0x2052,

PC6 = 0x4062,

PC7 = 0x8772,

#endif

#if defined(PORTD)

PD0 = 0x0103,

PD1 = 0x0213,

PD2 = 0x0423,

PD3 = 0x0833,

PD4 = 0x1043,

PD5 = 0x2053,

PD6 = 0x4063,

PD7 = 0x8073,

#endif

#if defined(PORTE)

PE0 = 0x0104,

PE1 = 0x0214,

PE2 = 0x0424,

PE3 = 0x0834,

PE4 = 0x1044,

PE5 = 0x2054,

PE6 = 0x4064,

PE7 = 0x8074,

#endif

#if defined(PORTF)

PF0 = 0x0105,

PF1 = 0x0215,

PF2 = 0x0425,

PF3 = 0x0835,

PF4 = 0x1045,

PF5 = 0x2055,

PF6 = 0x4065,

PF7 = 0x8075,

#endif

#if defined(PORTG)

PG0 = 0x0106,

PG1 = 0x0216,

PG2 = 0x0426,

PG3 = 0x0836,

PG4 = 0x1046,

PG5 = 0x2056,

PG6 = 0x4066,

PG7 = 0x8076,

#endif

} PIN;

/* Pin Mode */

typedef enum

{

DISABLE,

INPUT,

INPUT_PULLUP,

OUTPUT,

OPEN_DRAIN,

OPEN_SOURCE,

} MODE;

/* Pin Value */

typedef enum

{

LOW,

HIGH,

TOGGLE = 0xFF,

IGNORE = TOGGLE,

} VAL;

/* Input/Sense Configuration select */

typedef enum

{

ISC_INTDISABLE = PORT_ISC_INTDISABLE_gc, /* Interrupt disabled but input buffer enabled */

ISC_BOTHEDGES = PORT_ISC_BOTHEDGES_gc, /* Sense Both Edges */

ISC_RISING = PORT_ISC_RISING_gc, /* Sense Rising Edge */

ISC_FALLING = PORT_ISC_FALLING_gc, /* Sense Falling Edge */

ISC_INPUT_DISABLE = PORT_ISC_INPUT_DISABLE_gc, /* Digital Input Buffer disabled */

ISC_LEVEL = PORT_ISC_LEVEL_gc, /* Sense low Level */

} ISC;

/* Type of Callback Function */

typedef void (*callback_t)(uint8_t value, uint8_t flags);

static void disable(void)

{

for (uint8_t i = 0; i < PORT_MAX_PORTS; ++i)

{

PORT_t *port = getPort(i);

if (port)

{

port->PIN0CTRL = PORT_ISC_INPUT_DISABLE_gc;

port->PIN1CTRL = PORT_ISC_INPUT_DISABLE_gc;

port->PIN2CTRL = PORT_ISC_INPUT_DISABLE_gc;

port->PIN3CTRL = PORT_ISC_INPUT_DISABLE_gc;

port->PIN4CTRL = PORT_ISC_INPUT_DISABLE_gc;

port->PIN5CTRL = PORT_ISC_INPUT_DISABLE_gc;

port->PIN6CTRL = PORT_ISC_INPUT_DISABLE_gc;

port->PIN7CTRL = PORT_ISC_INPUT_DISABLE_gc;

port->DIR = 0;

port->OUT = 0;

port->INTFLAGS = 0xFF;

}

static void pinMode(PIN pin, MODE mode, VAL value = IGNORE, bool invert = false)

{

pindef_t spin = { .port = pin };

PORT_t *port = getPort(spin.x.port);

if (port)

{

uint8_t ctrl = 0;

switch (mode)

{

case DISABLE:

ctrl = PORT_ISC_INPUT_DISABLE_gc;

break;

case OUTPUT:

if (value != IGNORE) digitalWrite(pin, value);

port->DIRSET = spin.x.bmsk;

break;

case OPEN_DRAIN:

digitalWrite(pin, LOW);

if (value != IGNORE) digitalWriteOD(pin, value);

ctrl = PORT_PULLUPEN_bm;

break;

case OPEN_SOURCE:

digitalWrite(pin, HIGH);

if (value == IGNORE) digitalWriteOS(pin, value);

break;

case INPUT_PULLUP:

ctrl = PORT_PULLUPEN_bm;

/* fall through */

case INPUT:

port->DIRCLR = spin.x.bmsk;

break;

}

((register8_t *)&port->PIN0CTRL)[spin.x.bpos] = ctrl | (invert ? PORT_INVEN_bm : 0);

}

/* for pinMode(OUTPUT) */

static void digitalWrite(PIN pin, VAL value)

{

pindef_t spin = { .port = pin };

#if !defined(DEBUG)

if (__builtin_constant_p(pin))

{

switch (spin.x.port)

{

#if defined(PORTA)

case 0: if (value == TOGGLE) VPORTA.IN |= spin.x.bmsk; else if (value == LOW) VPORTA.OUT &= ~spin.x.bmsk; else VPORTA.OUT |= spin.x.bmsk; break;

#endif

#if defined(PORTB)

case 1: if (value == TOGGLE) VPORTB.IN |= spin.x.bmsk; else if (value == LOW) VPORTB.OUT &= ~spin.x.bmsk; else VPORTB.OUT |= spin.x.bmsk; break;

#endif

#if defined(PORTC)

case 2: if (value == TOGGLE) VPORTC.IN |= spin.x.bmsk; else if (value == LOW) VPORTC.OUT &= ~spin.x.bmsk; else VPORTC.OUT |= spin.x.bmsk; break;

#endif

#if defined(PORTD)

case 3: if (value == TOGGLE) VPORTD.IN |= spin.x.bmsk; else if (value == LOW) VPORTD.OUT &= ~spin.x.bmsk; else VPORTD.OUT |= spin.x.bmsk; break;

#endif

#if defined(PORTE)

case 4: if (value == TOGGLE) VPORTE.IN |= spin.x.bmsk; else if (value == LOW) VPORTE.OUT &= ~spin.x.bmsk; else VPORTE.OUT |= spin.x.bmsk; break;

#endif

#if defined(PORTF)

case 5: if (value == TOGGLE) VPORTF.IN |= spin.x.bmsk; else if (value == LOW) VPORTF.OUT &= ~spin.x.bmsk; else VPORTF.OUT |= spin.x.bmsk; break;

#endif

#if defined(PORTG)

case 6: if (value == TOGGLE) VPORTG.IN |= spin.x.bmsk; else if (value == LOW) VPORTG.OUT &= ~spin.x.bmsk; else VPORTG.OUT |= spin.x.bmsk; break;

#endif

}

else

#endif

{

switch (spin.x.port)

{

#if defined(PORTA)

case 0: if (value == TOGGLE) PORTA.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTA.OUTCLR = spin.x.bmsk; else PORTA.OUTSET = spin.x.bmsk; break;

#endif

#if defined(PORTB)

case 1: if (value == TOGGLE) PORTB.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTB.OUTCLR = spin.x.bmsk; else PORTB.OUTSET = spin.x.bmsk; break;

#endif

#if defined(PORTC)

case 2: if (value == TOGGLE) PORTC.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTC.OUTCLR = spin.x.bmsk; else PORTC.OUTSET = spin.x.bmsk; break;

#endif

#if defined(PORTD)

case 3: if (value == TOGGLE) PORTD.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTD.OUTCLR = spin.x.bmsk; else PORTD.OUTSET = spin.x.bmsk; break;

#endif

#if defined(PORTE)

case 4: if (value == TOGGLE) PORTE.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTE.OUTCLR = spin.x.bmsk; else PORTE.OUTSET = spin.x.bmsk; break;

#endif

#if defined(PORTF)

case 5: if (value == TOGGLE) PORTF.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTF.OUTCLR = spin.x.bmsk; else PORTF.OUTSET = spin.x.bmsk; break;

#endif

#if defined(PORTG)

case 6: if (value == TOGGLE) PORTG.OUTTGL = spin.x.bmsk; else if (value == LOW) PORTG.OUTCLR = spin.x.bmsk; else PORTG.OUTSET = spin.x.bmsk; break;

#endif

}

/* for pinMode(OPEN_DRAIN) */

static void digitalWriteOD(PIN pin, VAL value)

{

pindef_t spin = { .port = pin };

#if !defined(DEBUG)

if (__builtin_constant_p(pin))

{

switch (spin.x.port)

{

#if defined(PORTA)

case 0: if (value == TOGGLE) PORTA.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTA.DIR |= spin.x.bmsk; else VPORTA.DIR &= ~spin.x.bmsk; break;

#endif

#if defined(PORTB)

case 1: if (value == TOGGLE) PORTB.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTB.DIR |= spin.x.bmsk; else VPORTB.DIR &= ~spin.x.bmsk; break;

#endif

#if defined(PORTC)

case 2: if (value == TOGGLE) PORTC.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTC.DIR |= spin.x.bmsk; else VPORTC.DIR &= ~spin.x.bmsk; break;

#endif

#if defined(PORTD)

case 3: if (value == TOGGLE) PORTD.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTD.DIR |= spin.x.bmsk; else VPORTD.DIR &= ~spin.x.bmsk; break;

#endif

#if defined(PORTE)

case 4: if (value == TOGGLE) PORTE.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTE.DIR |= spin.x.bmsk; else VPORTE.DIR &= ~spin.x.bmsk; break;

#endif

#if defined(PORTF)

case 5: if (value == TOGGLE) PORTF.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTF.DIR |= spin.x.bmsk; else VPORTF.DIR &= ~spin.x.bmsk; break;

#endif

#if defined(PORTG)

case 6: if (value == TOGGLE) PORTG.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTG.DIR |= spin.x.bmsk; else VPORTG.DIR &= ~spin.x.bmsk; break;

#endif

}

else

#endif

{

switch (spin.x.port)

{

#if defined(PORTA)

case 0: if (value == TOGGLE) PORTA.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTA.DIRSET = spin.x.bmsk; else PORTA.DIRCLR = spin.x.bmsk; break;

#endif

#if defined(PORTB)

case 1: if (value == TOGGLE) PORTB.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTB.DIRSET = spin.x.bmsk; else PORTB.DIRCLR = spin.x.bmsk; break;

#endif

#if defined(PORTC)

case 2: if (value == TOGGLE) PORTC.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTC.DIRSET = spin.x.bmsk; else PORTC.DIRCLR = spin.x.bmsk; break;

#endif

#if defined(PORTD)

case 3: if (value == TOGGLE) PORTD.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTD.DIRSET = spin.x.bmsk; else PORTD.DIRCLR = spin.x.bmsk; break;

#endif

#if defined(PORTE)

case 4: if (value == TOGGLE) PORTE.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTE.DIRSET = spin.x.bmsk; else PORTE.DIRCLR = spin.x.bmsk; break;

#endif

#if defined(PORTF)

case 5: if (value == TOGGLE) PORTF.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTF.DIRSET = spin.x.bmsk; else PORTF.DIRCLR = spin.x.bmsk; break;

#endif

#if defined(PORTG)

case 6: if (value == TOGGLE) PORTG.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTG.DIRSET = spin.x.bmsk; else PORTG.DIRCLR = spin.x.bmsk; break;

#endif

}

/* for pinMode(OPEN_SOURCE) */

static void digitalWriteOS(PIN pin, VAL value)

{

pindef_t spin = { .port = pin };

#if !defined(DEBUG)

if (__builtin_constant_p(pin))

{

switch (spin.x.port)

{

#if defined(PORTA)

case 0: if (value == TOGGLE) PORTA.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTA.DIR &= ~spin.x.bmsk; else VPORTA.DIR |= spin.x.bmsk; break;

#endif

#if defined(PORTB)

case 1: if (value == TOGGLE) PORTB.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTB.DIR &= ~spin.x.bmsk; else VPORTB.DIR |= spin.x.bmsk; break;

#endif

#if defined(PORTC)

case 2: if (value == TOGGLE) PORTC.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTC.DIR &= ~spin.x.bmsk; else VPORTC.DIR |= spin.x.bmsk; break;

#endif

#if defined(PORTD)

case 3: if (value == TOGGLE) PORTD.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTD.DIR &= ~spin.x.bmsk; else VPORTD.DIR |= spin.x.bmsk; break;

#endif

#if defined(PORTE)

case 4: if (value == TOGGLE) PORTE.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTE.DIR &= ~spin.x.bmsk; else VPORTE.DIR |= spin.x.bmsk; break;

#endif

#if defined(PORTF)

case 5: if (value == TOGGLE) PORTF.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTF.DIR &= ~spin.x.bmsk; else VPORTF.DIR |= spin.x.bmsk; break;

#endif

#if defined(PORTG)

case 6: if (value == TOGGLE) PORTG.DIRTGL = spin.x.bmsk; else if (value == LOW) VPORTG.DIR &= ~spin.x.bmsk; else VPORTG.DIR |= spin.x.bmsk; break;

#endif

}

else

#endif

{

switch (spin.x.port)

{

#if defined(PORTA)

case 0: if (value == TOGGLE) PORTA.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTA.DIRCLR = spin.x.bmsk; else PORTA.DIRSET = spin.x.bmsk; break;

#endif

#if defined(PORTB)

case 1: if (value == TOGGLE) PORTB.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTB.DIRCLR = spin.x.bmsk; else PORTB.DIRSET = spin.x.bmsk; break;

#endif

#if defined(PORTC)

case 2: if (value == TOGGLE) PORTC.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTC.DIRCLR = spin.x.bmsk; else PORTC.DIRSET = spin.x.bmsk; break;

#endif

#if defined(PORTD)

case 3: if (value == TOGGLE) PORTD.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTD.DIRCLR = spin.x.bmsk; else PORTD.DIRSET = spin.x.bmsk; break;

#endif

#if defined(PORTE)

case 4: if (value == TOGGLE) PORTE.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTE.DIRCLR = spin.x.bmsk; else PORTE.DIRSET = spin.x.bmsk; break;

#endif

#if defined(PORTF)

case 5: if (value == TOGGLE) PORTF.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTF.DIRCLR = spin.x.bmsk; else PORTF.DIRSET = spin.x.bmsk; break;

#endif

#if defined(PORTG)

case 6: if (value == TOGGLE) PORTG.DIRTGL = spin.x.bmsk; else if (value == LOW) PORTG.DIRCLR = spin.x.bmsk; else PORTG.DIRSET = spin.x.bmsk; break;

#endif

}

static VAL digitalRead(PIN pin)

{

pindef_t spin = { .port = pin };

switch (spin.x.port)

{

#if defined(PORTA)

case 0: return VPORTA.IN & spin.x.bmsk ? HIGH : LOW;

#endif

#if defined(PORTB)

case 1: return VPORTB.IN & spin.x.bmsk ? HIGH : LOW;

#endif

#if defined(PORTC)

case 2: return VPORTC.IN & spin.x.bmsk ? HIGH : LOW;

#endif

#if defined(PORTD)

case 3: return VPORTD.IN & spin.x.bmsk ? HIGH : LOW;

#endif

#if defined(PORTE)

case 4: return VPORTE.IN & spin.x.bmsk ? HIGH : LOW;

#endif

#if defined(PORTF)

case 5: return VPORTF.IN & spin.x.bmsk ? HIGH : LOW;

#endif

#if defined(PORTG)

case 6: return VPORTG.IN & spin.x.bmsk ? HIGH : LOW;

#endif

}

return LOW;

}

static void interrupt(PIN pin, ISC mode, callback_t func = 0)

{

pindef_t spin = { .port = pin };

PORT_t *port = getPort(spin.x.port);

if (port)

{

register8_t &ctrl = ((register8_t *)&port->PIN0CTRL)[spin.x.bpos];

if ((mode != ISC_INTDISABLE) && func)

{

_callback[spin.x.port] = func;

#if CONFIG_PORT_ISR

ctrl = (ctrl & ~PORT_ISC_gm) | mode;

#endif

}

else

{

ctrl = (ctrl & ~PORT_ISC_gm) | ISC_INTDISABLE;

_callback[spin.x.port] = 0;

}

static void poll(void)

{

#if !CONFIG_TCA_ISR

#if defined(PORTA)

isr_port(0, VPORTA);

#endif

#if defined(PORTB)

isr_port(1, VPORTB);

#endif

#if defined(PORTC)

isr_port(2, VPORTC);

#endif

#if defined(PORTD)

isr_port(3, VPORTD);

#endif

#if defined(PORTE)

isr_port(4, VPORTE);

#endif

#if defined(PORTF)

isr_port(5, VPORTF);

#endif

#if defined(PORTG)

isr_port(6, VPORTG);

#endif

}

private:

typedef union

{

struct

{

uint8_t port: 4;

uint8_t bpos: 3;

uint8_t ____: 1;

uint8_t bmsk: 8;

} x;

uint16_t port;

} pindef_t;

static callback_t _callback[PORT_MAX_PORTS];

#if CONFIG_PORT_ISR

friend void port_isr_port(uint8_t ch, VPORT_t &port);

#endif

static void isr_port(uint8_t ch, VPORT_t &port)

{

uint8_t flags = port.INTFLAGS = port.INTFLAGS;

if (flags && _callback[ch])

_callback[ch](port.IN, flags);

}

static PORT_t *getPort(uint8_t port)

{

if (port < PORT_MAX_PORTS)

{

#if (1 < PORT_MAX_POTS) && !defined(PORTB)

if (port != 1)

#endif

return &PORTA + port;

}

return 0;

}

};

/*
  avr8_port.cpp - Port Driver for Microchip AVR8 Series
 
  Copyright (c) 2025 Sasapea's Lab. All right reserved.
 
  This program is free software: you can redistribute it and/or
  modify it under the terms of the GNU General Public License as
  published by the Free Software Foundation, either version 3 of
  the License, or at your option) any later version.
 
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU General Public License for more details.
 
  You should have received a copy of the GNU General Public License
  along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "avr8_port.h"

Port::callback_t Port::_callback[];

#if CONFIG_PORT_ISR

inline void port_isr_port(uint8_t ch, VPORT_t &port)
{
  Port::isr_port(ch, port);
}

#if defined(PORTA)
ISR(PORTA_PORT_vect)
{
  port_isr_port(0, VPORTA);
}
#endif

#if defined(PORTB)
ISR(PORTB_PORT_vect)
{
  port_isr_port(1, VPORTB);
}
#endif

#if defined(PORTC)
ISR(PORTC_PORT_vect)
{
  port_isr_port(2, VPORTC);
}
#endif

#if defined(PORTD)
ISR(PORTD_PORT_vect)
{
  port_isr_port(3, VPORTD);
}
#endif

#if defined(PORTE)
ISR(PORTE_PORT_vect)
{
  port_isr_port(4, VPORTE);
}
#endif

#if defined(PORTF)
ISR(PORTF_PORT_vect)
{
  port_isr_port(5, VPORTF);
}
#endif

#if defined(PORTG)
ISR(PORTG_PORT_vect)
{
  port_isr_port(6, VPORTG);
}
#endif

#endif

avr8_port.cpp - Port Driver for Microchip AVR8 Series

This program is free software: you can redistribute it and/or

modify it under the terms of the GNU General Public License as

published by the Free Software Foundation, either version 3 of

the License, or at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program. If not, see <https://www.gnu.org/licenses/>.

#include "avr8_port.h"

Port::callback_t Port::_callback[];

#if CONFIG_PORT_ISR

inline void port_isr_port(uint8_t ch, VPORT_t &port)

{

Port::isr_port(ch, port);

}

#if defined(PORTA)

ISR(PORTA_PORT_vect)

{

port_isr_port(0, VPORTA);

}

#endif

#if defined(PORTB)

ISR(PORTB_PORT_vect)

{

port_isr_port(1, VPORTB);

}

#endif

#if defined(PORTC)

ISR(PORTC_PORT_vect)

{

port_isr_port(2, VPORTC);

}

#endif

#if defined(PORTD)

ISR(PORTD_PORT_vect)

{

port_isr_port(3, VPORTD);

}

#endif

#if defined(PORTE)

ISR(PORTE_PORT_vect)

{

port_isr_port(4, VPORTE);

}

#endif

#if defined(PORTF)

ISR(PORTF_PORT_vect)

{

port_isr_port(5, VPORTF);

}

#endif

#if defined(PORTG)

ISR(PORTG_PORT_vect)

{

port_isr_port(6, VPORTG);

}

#endif

カテゴリー: avr8

Microchip AVR8 用のライブラリを自作する。(GPIO)