503 lines
18 KiB
C
503 lines
18 KiB
C
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/* Arduino DigitalPin Library
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* Copyright (C) 2012 by William Greiman
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*
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* This file is part of the Arduino DigitalPin Library
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*
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* This Library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This Library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the Arduino DigitalPin Library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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/**
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* \file
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* \brief DigitalPin class
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*/
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#ifndef DigitalPin_h
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#define DigitalPin_h
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#include <avr/io.h>
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#include <util/atomic.h>
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//------------------------------------------------------------------------------
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/** DigitalPin version YYYYMMDD */
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#define DIGITAL_PIN_VERSION 20120719
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//------------------------------------------------------------------------------
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/**
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* \class pin_map_t
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* \brief struct for mapping digital pins
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*/
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struct pin_map_t {
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volatile uint8_t* ddr; /**< address of DDR for this pin */
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volatile uint8_t* pin; /**< address of PIN for this pin */
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volatile uint8_t* port; /**< address of PORT for this pin */
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uint8_t bit; /**< bit number for this pin */
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};
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//------------------------------------------------------------------------------
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#if defined(__AVR_ATmega168__)\
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||defined(__AVR_ATmega168P__)\
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||defined(__AVR_ATmega328P__)
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// 168 and 328 Arduinos
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const static pin_map_t pinMap[] = {
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{&DDRD, &PIND, &PORTD, 0}, // D0 0
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{&DDRD, &PIND, &PORTD, 1}, // D1 1
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{&DDRD, &PIND, &PORTD, 2}, // D2 2
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{&DDRD, &PIND, &PORTD, 3}, // D3 3
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{&DDRD, &PIND, &PORTD, 4}, // D4 4
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{&DDRD, &PIND, &PORTD, 5}, // D5 5
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{&DDRD, &PIND, &PORTD, 6}, // D6 6
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{&DDRD, &PIND, &PORTD, 7}, // D7 7
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{&DDRB, &PINB, &PORTB, 0}, // B0 8
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{&DDRB, &PINB, &PORTB, 1}, // B1 9
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{&DDRB, &PINB, &PORTB, 2}, // B2 10
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{&DDRB, &PINB, &PORTB, 3}, // B3 11
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{&DDRB, &PINB, &PORTB, 4}, // B4 12
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{&DDRB, &PINB, &PORTB, 5}, // B5 13
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{&DDRC, &PINC, &PORTC, 0}, // C0 14
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{&DDRC, &PINC, &PORTC, 1}, // C1 15
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{&DDRC, &PINC, &PORTC, 2}, // C2 16
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{&DDRC, &PINC, &PORTC, 3}, // C3 17
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{&DDRC, &PINC, &PORTC, 4}, // C4 18
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{&DDRC, &PINC, &PORTC, 5} // C5 19
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};
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//------------------------------------------------------------------------------
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#elif defined(__AVR_ATmega1280__)\
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|| defined(__AVR_ATmega2560__)
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// Mega
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static const pin_map_t pinMap[] = {
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{&DDRE, &PINE, &PORTE, 0}, // E0 0
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{&DDRE, &PINE, &PORTE, 1}, // E1 1
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{&DDRE, &PINE, &PORTE, 4}, // E4 2
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{&DDRE, &PINE, &PORTE, 5}, // E5 3
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{&DDRG, &PING, &PORTG, 5}, // G5 4
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{&DDRE, &PINE, &PORTE, 3}, // E3 5
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{&DDRH, &PINH, &PORTH, 3}, // H3 6
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{&DDRH, &PINH, &PORTH, 4}, // H4 7
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{&DDRH, &PINH, &PORTH, 5}, // H5 8
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{&DDRH, &PINH, &PORTH, 6}, // H6 9
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{&DDRB, &PINB, &PORTB, 4}, // B4 10
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{&DDRB, &PINB, &PORTB, 5}, // B5 11
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{&DDRB, &PINB, &PORTB, 6}, // B6 12
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{&DDRB, &PINB, &PORTB, 7}, // B7 13
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{&DDRJ, &PINJ, &PORTJ, 1}, // J1 14
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{&DDRJ, &PINJ, &PORTJ, 0}, // J0 15
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{&DDRH, &PINH, &PORTH, 1}, // H1 16
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{&DDRH, &PINH, &PORTH, 0}, // H0 17
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{&DDRD, &PIND, &PORTD, 3}, // D3 18
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{&DDRD, &PIND, &PORTD, 2}, // D2 19
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{&DDRD, &PIND, &PORTD, 1}, // D1 20
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{&DDRD, &PIND, &PORTD, 0}, // D0 21
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{&DDRA, &PINA, &PORTA, 0}, // A0 22
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{&DDRA, &PINA, &PORTA, 1}, // A1 23
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{&DDRA, &PINA, &PORTA, 2}, // A2 24
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{&DDRA, &PINA, &PORTA, 3}, // A3 25
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{&DDRA, &PINA, &PORTA, 4}, // A4 26
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{&DDRA, &PINA, &PORTA, 5}, // A5 27
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{&DDRA, &PINA, &PORTA, 6}, // A6 28
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{&DDRA, &PINA, &PORTA, 7}, // A7 29
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{&DDRC, &PINC, &PORTC, 7}, // C7 30
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{&DDRC, &PINC, &PORTC, 6}, // C6 31
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{&DDRC, &PINC, &PORTC, 5}, // C5 32
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{&DDRC, &PINC, &PORTC, 4}, // C4 33
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{&DDRC, &PINC, &PORTC, 3}, // C3 34
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{&DDRC, &PINC, &PORTC, 2}, // C2 35
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{&DDRC, &PINC, &PORTC, 1}, // C1 36
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{&DDRC, &PINC, &PORTC, 0}, // C0 37
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{&DDRD, &PIND, &PORTD, 7}, // D7 38
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{&DDRG, &PING, &PORTG, 2}, // G2 39
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{&DDRG, &PING, &PORTG, 1}, // G1 40
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{&DDRG, &PING, &PORTG, 0}, // G0 41
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{&DDRL, &PINL, &PORTL, 7}, // L7 42
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{&DDRL, &PINL, &PORTL, 6}, // L6 43
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{&DDRL, &PINL, &PORTL, 5}, // L5 44
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{&DDRL, &PINL, &PORTL, 4}, // L4 45
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{&DDRL, &PINL, &PORTL, 3}, // L3 46
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{&DDRL, &PINL, &PORTL, 2}, // L2 47
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{&DDRL, &PINL, &PORTL, 1}, // L1 48
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{&DDRL, &PINL, &PORTL, 0}, // L0 49
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{&DDRB, &PINB, &PORTB, 3}, // B3 50
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{&DDRB, &PINB, &PORTB, 2}, // B2 51
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{&DDRB, &PINB, &PORTB, 1}, // B1 52
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{&DDRB, &PINB, &PORTB, 0}, // B0 53
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{&DDRF, &PINF, &PORTF, 0}, // F0 54
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{&DDRF, &PINF, &PORTF, 1}, // F1 55
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{&DDRF, &PINF, &PORTF, 2}, // F2 56
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{&DDRF, &PINF, &PORTF, 3}, // F3 57
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{&DDRF, &PINF, &PORTF, 4}, // F4 58
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{&DDRF, &PINF, &PORTF, 5}, // F5 59
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{&DDRF, &PINF, &PORTF, 6}, // F6 60
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{&DDRF, &PINF, &PORTF, 7}, // F7 61
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{&DDRK, &PINK, &PORTK, 0}, // K0 62
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{&DDRK, &PINK, &PORTK, 1}, // K1 63
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{&DDRK, &PINK, &PORTK, 2}, // K2 64
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{&DDRK, &PINK, &PORTK, 3}, // K3 65
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{&DDRK, &PINK, &PORTK, 4}, // K4 66
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{&DDRK, &PINK, &PORTK, 5}, // K5 67
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{&DDRK, &PINK, &PORTK, 6}, // K6 68
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{&DDRK, &PINK, &PORTK, 7} // K7 69
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};
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//------------------------------------------------------------------------------
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#elif defined(__AVR_ATmega644P__)\
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|| defined(__AVR_ATmega644__)\
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|| defined(__AVR_ATmega1284P__)
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// Sanguino
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static const pin_map_t pinMap[] = {
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{&DDRB, &PINB, &PORTB, 0}, // B0 0
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{&DDRB, &PINB, &PORTB, 1}, // B1 1
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{&DDRB, &PINB, &PORTB, 2}, // B2 2
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{&DDRB, &PINB, &PORTB, 3}, // B3 3
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{&DDRB, &PINB, &PORTB, 4}, // B4 4
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{&DDRB, &PINB, &PORTB, 5}, // B5 5
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{&DDRB, &PINB, &PORTB, 6}, // B6 6
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{&DDRB, &PINB, &PORTB, 7}, // B7 7
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{&DDRD, &PIND, &PORTD, 0}, // D0 8
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{&DDRD, &PIND, &PORTD, 1}, // D1 9
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{&DDRD, &PIND, &PORTD, 2}, // D2 10
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{&DDRD, &PIND, &PORTD, 3}, // D3 11
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{&DDRD, &PIND, &PORTD, 4}, // D4 12
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{&DDRD, &PIND, &PORTD, 5}, // D5 13
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{&DDRD, &PIND, &PORTD, 6}, // D6 14
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{&DDRD, &PIND, &PORTD, 7}, // D7 15
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{&DDRC, &PINC, &PORTC, 0}, // C0 16
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{&DDRC, &PINC, &PORTC, 1}, // C1 17
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{&DDRC, &PINC, &PORTC, 2}, // C2 18
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{&DDRC, &PINC, &PORTC, 3}, // C3 19
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{&DDRC, &PINC, &PORTC, 4}, // C4 20
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{&DDRC, &PINC, &PORTC, 5}, // C5 21
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{&DDRC, &PINC, &PORTC, 6}, // C6 22
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{&DDRC, &PINC, &PORTC, 7}, // C7 23
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{&DDRA, &PINA, &PORTA, 7}, // A7 24
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{&DDRA, &PINA, &PORTA, 6}, // A6 25
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{&DDRA, &PINA, &PORTA, 5}, // A5 26
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{&DDRA, &PINA, &PORTA, 4}, // A4 27
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{&DDRA, &PINA, &PORTA, 3}, // A3 28
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{&DDRA, &PINA, &PORTA, 2}, // A2 29
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{&DDRA, &PINA, &PORTA, 1}, // A1 30
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{&DDRA, &PINA, &PORTA, 0} // A0 31
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};
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//------------------------------------------------------------------------------
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#elif defined(__AVR_ATmega32U4__)
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#ifdef CORE_TEENSY
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// Teensy 2.0
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static const pin_map_t pinMap[] = {
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{&DDRB, &PINB, &PORTB, 0}, // B0 0
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{&DDRB, &PINB, &PORTB, 1}, // B1 1
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{&DDRB, &PINB, &PORTB, 2}, // B2 2
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{&DDRB, &PINB, &PORTB, 3}, // B3 3
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{&DDRB, &PINB, &PORTB, 7}, // B7 4
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{&DDRD, &PIND, &PORTD, 0}, // D0 5
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{&DDRD, &PIND, &PORTD, 1}, // D1 6
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{&DDRD, &PIND, &PORTD, 2}, // D2 7
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{&DDRD, &PIND, &PORTD, 3}, // D3 8
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{&DDRC, &PINC, &PORTC, 6}, // C6 9
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{&DDRC, &PINC, &PORTC, 7}, // C7 10
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{&DDRD, &PIND, &PORTD, 6}, // D6 11
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{&DDRD, &PIND, &PORTD, 7}, // D7 12
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{&DDRB, &PINB, &PORTB, 4}, // B4 13
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{&DDRB, &PINB, &PORTB, 5}, // B5 14
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{&DDRB, &PINB, &PORTB, 6}, // B6 15
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{&DDRF, &PINF, &PORTF, 7}, // F7 16
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{&DDRF, &PINF, &PORTF, 6}, // F6 17
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{&DDRF, &PINF, &PORTF, 5}, // F5 18
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{&DDRF, &PINF, &PORTF, 4}, // F4 19
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{&DDRF, &PINF, &PORTF, 1}, // F1 20
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{&DDRF, &PINF, &PORTF, 0}, // F0 21
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{&DDRD, &PIND, &PORTD, 4}, // D4 22
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{&DDRD, &PIND, &PORTD, 5}, // D5 23
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{&DDRE, &PINE, &PORTE, 6} // E6 24
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};
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//------------------------------------------------------------------------------
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#else // CORE_TEENSY
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// Leonardo
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static const pin_map_t pinMap[] = {
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{&DDRD, &PIND, &PORTD, 2}, // D2 0
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{&DDRD, &PIND, &PORTD, 3}, // D3 1
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{&DDRD, &PIND, &PORTD, 1}, // D1 2
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{&DDRD, &PIND, &PORTD, 0}, // D0 3
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{&DDRD, &PIND, &PORTD, 4}, // D4 4
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{&DDRC, &PINC, &PORTC, 6}, // C6 5
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{&DDRD, &PIND, &PORTD, 7}, // D7 6
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{&DDRE, &PINE, &PORTE, 6}, // E6 7
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{&DDRB, &PINB, &PORTB, 4}, // B4 8
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{&DDRB, &PINB, &PORTB, 5}, // B5 9
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{&DDRB, &PINB, &PORTB, 6}, // B6 10
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{&DDRB, &PINB, &PORTB, 7}, // B7 11
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{&DDRD, &PIND, &PORTD, 6}, // D6 12
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{&DDRC, &PINC, &PORTC, 7}, // C7 13
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{&DDRB, &PINB, &PORTB, 3}, // B3 14
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{&DDRB, &PINB, &PORTB, 1}, // B1 15
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{&DDRB, &PINB, &PORTB, 2}, // B2 16
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{&DDRB, &PINB, &PORTB, 0}, // B0 17
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{&DDRF, &PINF, &PORTF, 7}, // F7 18
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{&DDRF, &PINF, &PORTF, 6}, // F6 19
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{&DDRF, &PINF, &PORTF, 5}, // F5 20
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{&DDRF, &PINF, &PORTF, 4}, // F4 21
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{&DDRF, &PINF, &PORTF, 1}, // F1 22
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{&DDRF, &PINF, &PORTF, 0}, // F0 23
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{&DDRD, &PIND, &PORTD, 4}, // D4 24
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{&DDRD, &PIND, &PORTD, 7}, // D7 25
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{&DDRB, &PINB, &PORTB, 4}, // B4 26
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{&DDRB, &PINB, &PORTB, 5}, // B5 27
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{&DDRB, &PINB, &PORTB, 6}, // B6 28
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{&DDRD, &PIND, &PORTD, 6} // D6 29
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};
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#endif // CORE_TEENSY
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//------------------------------------------------------------------------------
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#elif defined(__AVR_AT90USB646__)\
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|| defined(__AVR_AT90USB1286__)
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// Teensy++ 1.0 & 2.0
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static const pin_map_t pinMap[] = {
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{&DDRD, &PIND, &PORTD, 0}, // D0 0
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{&DDRD, &PIND, &PORTD, 1}, // D1 1
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{&DDRD, &PIND, &PORTD, 2}, // D2 2
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{&DDRD, &PIND, &PORTD, 3}, // D3 3
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{&DDRD, &PIND, &PORTD, 4}, // D4 4
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{&DDRD, &PIND, &PORTD, 5}, // D5 5
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{&DDRD, &PIND, &PORTD, 6}, // D6 6
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{&DDRD, &PIND, &PORTD, 7}, // D7 7
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{&DDRE, &PINE, &PORTE, 0}, // E0 8
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{&DDRE, &PINE, &PORTE, 1}, // E1 9
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{&DDRC, &PINC, &PORTC, 0}, // C0 10
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{&DDRC, &PINC, &PORTC, 1}, // C1 11
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{&DDRC, &PINC, &PORTC, 2}, // C2 12
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{&DDRC, &PINC, &PORTC, 3}, // C3 13
|
||
|
|
{&DDRC, &PINC, &PORTC, 4}, // C4 14
|
||
|
|
{&DDRC, &PINC, &PORTC, 5}, // C5 15
|
||
|
|
{&DDRC, &PINC, &PORTC, 6}, // C6 16
|
||
|
|
{&DDRC, &PINC, &PORTC, 7}, // C7 17
|
||
|
|
{&DDRE, &PINE, &PORTE, 6}, // E6 18
|
||
|
|
{&DDRE, &PINE, &PORTE, 7}, // E7 19
|
||
|
|
{&DDRB, &PINB, &PORTB, 0}, // B0 20
|
||
|
|
{&DDRB, &PINB, &PORTB, 1}, // B1 21
|
||
|
|
{&DDRB, &PINB, &PORTB, 2}, // B2 22
|
||
|
|
{&DDRB, &PINB, &PORTB, 3}, // B3 23
|
||
|
|
{&DDRB, &PINB, &PORTB, 4}, // B4 24
|
||
|
|
{&DDRB, &PINB, &PORTB, 5}, // B5 25
|
||
|
|
{&DDRB, &PINB, &PORTB, 6}, // B6 26
|
||
|
|
{&DDRB, &PINB, &PORTB, 7}, // B7 27
|
||
|
|
{&DDRA, &PINA, &PORTA, 0}, // A0 28
|
||
|
|
{&DDRA, &PINA, &PORTA, 1}, // A1 29
|
||
|
|
{&DDRA, &PINA, &PORTA, 2}, // A2 30
|
||
|
|
{&DDRA, &PINA, &PORTA, 3}, // A3 31
|
||
|
|
{&DDRA, &PINA, &PORTA, 4}, // A4 32
|
||
|
|
{&DDRA, &PINA, &PORTA, 5}, // A5 33
|
||
|
|
{&DDRA, &PINA, &PORTA, 6}, // A6 34
|
||
|
|
{&DDRA, &PINA, &PORTA, 7}, // A7 35
|
||
|
|
{&DDRE, &PINE, &PORTE, 4}, // E4 36
|
||
|
|
{&DDRE, &PINE, &PORTE, 5}, // E5 37
|
||
|
|
{&DDRF, &PINF, &PORTF, 0}, // F0 38
|
||
|
|
{&DDRF, &PINF, &PORTF, 1}, // F1 39
|
||
|
|
{&DDRF, &PINF, &PORTF, 2}, // F2 40
|
||
|
|
{&DDRF, &PINF, &PORTF, 3}, // F3 41
|
||
|
|
{&DDRF, &PINF, &PORTF, 4}, // F4 42
|
||
|
|
{&DDRF, &PINF, &PORTF, 5}, // F5 43
|
||
|
|
{&DDRF, &PINF, &PORTF, 6}, // F6 44
|
||
|
|
{&DDRF, &PINF, &PORTF, 7} // F7 45
|
||
|
|
};
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
#else // CPU type
|
||
|
|
#error unknown CPU type
|
||
|
|
#endif // CPU type
|
||
|
|
/** count of pins */
|
||
|
|
static const uint8_t digitalPinCount = sizeof(pinMap)/sizeof(pin_map_t);
|
||
|
|
//==============================================================================
|
||
|
|
/** generate bad pin number error
|
||
|
|
* \return Never called so never returns
|
||
|
|
*/
|
||
|
|
uint8_t badPinNumber(void)
|
||
|
|
__attribute__((error("Pin number is too large or not a constant")));
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** fast write helper
|
||
|
|
* \param[in] address I/O register address
|
||
|
|
* \param[in] bit bit number to write
|
||
|
|
* \param[in] level value for bit
|
||
|
|
*/
|
||
|
|
static inline __attribute__((always_inline))
|
||
|
|
void fastBitWrite(volatile uint8_t* address, uint8_t bit, bool level) {
|
||
|
|
if (level) {
|
||
|
|
*address |= 1 << bit;
|
||
|
|
} else {
|
||
|
|
*address &= ~(1 << bit);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** fast write helper
|
||
|
|
* \param[in] address I/O register address
|
||
|
|
* \param[in] bit bit number to write
|
||
|
|
* \param[in] level value for bit
|
||
|
|
*/
|
||
|
|
static inline __attribute__((always_inline))
|
||
|
|
void fastBitWriteSafe(volatile uint8_t* address, uint8_t bit, bool level) {
|
||
|
|
uint8_t oldSREG;
|
||
|
|
if (address > (uint8_t*)0X5F) {
|
||
|
|
oldSREG = SREG;
|
||
|
|
cli();
|
||
|
|
}
|
||
|
|
fastBitWrite(address, bit, level);
|
||
|
|
if (address > (uint8_t*)0X5F) {
|
||
|
|
SREG = oldSREG;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** set pin mode
|
||
|
|
* \param[in] pin Arduino pin number
|
||
|
|
* \param[in] mode if true set write mode else read mode
|
||
|
|
*/
|
||
|
|
static inline __attribute__((always_inline))
|
||
|
|
void fastPinMode(uint8_t pin, bool mode) {
|
||
|
|
if (__builtin_constant_p(pin) && pin < digitalPinCount) {
|
||
|
|
fastBitWriteSafe(pinMap[pin].ddr,
|
||
|
|
pinMap[pin].bit, mode);
|
||
|
|
} else {
|
||
|
|
badPinNumber();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** read pin value
|
||
|
|
* \param[in] pin Arduino pin number
|
||
|
|
* \return value read
|
||
|
|
*/
|
||
|
|
static inline __attribute__((always_inline))
|
||
|
|
bool fastDigitalRead(uint8_t pin) {
|
||
|
|
if (__builtin_constant_p(pin) && pin < digitalPinCount) {
|
||
|
|
return (*pinMap[pin].pin >> pinMap[pin].bit) & 1;
|
||
|
|
} else {
|
||
|
|
return badPinNumber();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** Set pin value
|
||
|
|
* \param[in] pin Arduino pin number
|
||
|
|
* \param[in] level value to write
|
||
|
|
*/
|
||
|
|
static inline __attribute__((always_inline))
|
||
|
|
void fastDigitalWrite(uint8_t pin, bool level) {
|
||
|
|
if (__builtin_constant_p(pin) && pin < digitalPinCount) {
|
||
|
|
fastBitWriteSafe(pinMap[pin].port, pinMap[pin].bit, level);
|
||
|
|
} else {
|
||
|
|
badPinNumber();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** Set pin value in ISR
|
||
|
|
* \param[in] pin Arduino pin number
|
||
|
|
* \param[in] level value to write
|
||
|
|
*/
|
||
|
|
static inline __attribute__((always_inline))
|
||
|
|
void fastDigitalWriteISR(uint8_t pin, bool level) {
|
||
|
|
if (__builtin_constant_p(pin) && pin < digitalPinCount) {
|
||
|
|
fastBitWrite(pinMap[pin].port, pinMap[pin].bit, level);
|
||
|
|
} else {
|
||
|
|
badPinNumber();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//==============================================================================
|
||
|
|
/**
|
||
|
|
* \class DigitalPin
|
||
|
|
* \brief digital avr port I/O
|
||
|
|
*/
|
||
|
|
template<uint8_t PinNumber>
|
||
|
|
class DigitalPin {
|
||
|
|
public:
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
/**
|
||
|
|
* Set pin level high if output mode or enable 20K pullup if input mode.
|
||
|
|
*/
|
||
|
|
void high() {write(true);}
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
/** Set the pin mode to input. */
|
||
|
|
void inputMode() {
|
||
|
|
if ((uint16_t)pinMap[PinNumber].ddr > 0X5F) {
|
||
|
|
ATOMIC_BLOCK(ATOMIC_RESTORESTATE) {
|
||
|
|
isrInputMode();
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
isrInputMode();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
/** Set the pin mode to input.
|
||
|
|
* \param[in] pullup If true enable the pin's pullup else disable the pullup.
|
||
|
|
*/
|
||
|
|
void inputMode(bool pullup) {
|
||
|
|
if ((uint16_t)pinMap[PinNumber].ddr > 0X5F) {
|
||
|
|
ATOMIC_BLOCK(ATOMIC_RESTORESTATE) {
|
||
|
|
isrInputMode(pullup);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
isrInputMode(pullup);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
/**
|
||
|
|
* Set pin level low if output mode or disable 20K pullup if input mode.
|
||
|
|
*/
|
||
|
|
void low() {write(false);}
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
/** Set the pin's mode to output */
|
||
|
|
void outputMode() {
|
||
|
|
if ((uint16_t)pinMap[PinNumber].ddr > 0X5F) {
|
||
|
|
ATOMIC_BLOCK(ATOMIC_RESTORESTATE) {
|
||
|
|
isrOutputMode();
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
isrOutputMode();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
/** \return Pin's level */
|
||
|
|
bool read() {
|
||
|
|
return *pinMap[PinNumber].pin & (1 << pinMap[PinNumber].bit);
|
||
|
|
}
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
/** Write the pin's level.
|
||
|
|
* \param[in] value If true set the pin's level high else set the
|
||
|
|
* pin's level low.
|
||
|
|
*/
|
||
|
|
void write(bool value) {
|
||
|
|
if ((uint16_t)pinMap[PinNumber].port > 0X5F) {
|
||
|
|
ATOMIC_BLOCK(ATOMIC_RESTORESTATE) {
|
||
|
|
isrWrite(value);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
isrWrite(value);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
private:
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
void isrHigh() {
|
||
|
|
*pinMap[PinNumber].port |= 1 << pinMap[PinNumber].bit;
|
||
|
|
}
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
void isrInputMode() {
|
||
|
|
*pinMap[PinNumber].ddr &= ~(1 << pinMap[PinNumber].bit);
|
||
|
|
}
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
void isrInputMode(bool pullup) {
|
||
|
|
isrInputMode();
|
||
|
|
isrWrite(pullup);
|
||
|
|
}
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
void isrLow() {
|
||
|
|
*pinMap[PinNumber].port &= ~(1 << pinMap[PinNumber].bit);
|
||
|
|
}
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
void isrOutputMode() {
|
||
|
|
*pinMap[PinNumber].ddr |= 1 << pinMap[PinNumber].bit;
|
||
|
|
}
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
void isrWrite(bool value) {
|
||
|
|
if (value) {
|
||
|
|
isrHigh();
|
||
|
|
} else {
|
||
|
|
isrLow();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
#endif // DigitalPin_h
|