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214 lines
4.2 KiB
214 lines
4.2 KiB
6 years ago
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#pragma once
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//
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// * Utilities for pin aliasing / numbering. *
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//
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// Designed for Arduino.
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//
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// If you know the pin number beforehand, you can use the macros.
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//
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// If you need to use a variable for pin number, use the `_n` functions.
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// They are much slower, so always check if you really need them
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// - and they aren't fit for things where precise timing is required.
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//
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#include <avr/io.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include "calc.h"
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// type: pointer to port
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typedef volatile uint8_t* PORT_P;
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/** Pin numbering reference */
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#define D0 0
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#define D1 1
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#define D2 2
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#define D3 3
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#define D4 4
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#define D5 5
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#define D6 6
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#define D7 7
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#define D8 8
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#define D9 9
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#define D10 10
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#define D11 11
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#define D12 12
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#define D13 13
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#define D14 14
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#define D15 15
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#define D16 16
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#define D17 17
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#define D18 18
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#define D19 19
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#define D20 20
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#define D21 21
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#define A0 14
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#define A1 15
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#define A2 16
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#define A3 17
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#define A4 18
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#define A5 19
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#define A6 20
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#define A7 21
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#define _ddr(pin) _DDR_##pin
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#define _pin(pin) _PIN_##pin
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#define _pn(pin) _PN_##pin
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#define _port(pin) _PORT_##pin
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/** Set pin direction */
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#define set_dir(pin, d) set_bit( _ddr(pin), _pn(pin), d )
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void set_dir_n(const uint8_t pin, const uint8_t d);
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/** Configure pin as input */
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#define as_input(pin) cbi( _ddr(pin), _pn(pin) )
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void as_input_n(const uint8_t pin);
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/** Configure pin as input, with pull-up enabled */
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#define as_input_pu(pin) { as_input(pin); pin_up(pin); }
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void as_input_pu_n(const uint8_t pin);
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/** Configure pin as output */
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#define as_output(pin) sbi( _ddr(pin), _pn(pin) )
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void as_output_n(const uint8_t pin);
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/** Write value to a pin */
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#define pin_set(pin, v) set_bit( _port(pin), _pn(pin), v )
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void pin_set_n(const uint8_t pin, const uint8_t v);
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/** Write 0 to a pin */
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#define pin_down(pin) cbi( _port(pin), _pn(pin) )
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void pin_down_n(const uint8_t pin);
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/** Write 1 to a pin */
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#define pin_up(pin) sbi( _port(pin), _pn(pin) )
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void pin_up_n(uint8_t pin);
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/** Toggle a pin state */
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#define pin_toggle(pin) sbi( _pin(pin), _pn(pin) )
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void pin_toggle_n(uint8_t pin);
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/** Read a pin value */
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#define pin_read(pin) get_bit( _pin(pin), _pn(pin) )
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bool pin_read_n(uint8_t pin);
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/** CHeck if pin is low */
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#define pin_is_low(pin) (pin_read(pin) == 0)
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bool pin_is_low_n(uint8_t pin);
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/** CHeck if pin is high */
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#define pin_is_high(pin) (pin_read(pin) != 0)
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bool pin_is_high_n(uint8_t pin);
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// Helper macros
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#define _PORT_0 PORTD
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#define _PORT_1 PORTD
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#define _PORT_2 PORTD
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#define _PORT_3 PORTD
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#define _PORT_4 PORTD
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#define _PORT_5 PORTD
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#define _PORT_6 PORTD
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#define _PORT_7 PORTD
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#define _PORT_8 PORTB
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#define _PORT_9 PORTB
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#define _PORT_10 PORTB
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#define _PORT_11 PORTB
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#define _PORT_12 PORTB
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#define _PORT_13 PORTB
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#define _PORT_14 PORTC
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#define _PORT_15 PORTC
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#define _PORT_16 PORTC
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#define _PORT_17 PORTC
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#define _PORT_18 PORTC
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#define _PORT_19 PORTC
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#define _PORT_20 PORTC
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#define _PORT_21 PORTC
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#define _PIN_0 PIND
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#define _PIN_1 PIND
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#define _PIN_2 PIND
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#define _PIN_3 PIND
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#define _PIN_4 PIND
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#define _PIN_5 PIND
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#define _PIN_6 PIND
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#define _PIN_7 PIND
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#define _PIN_8 PINB
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#define _PIN_9 PINB
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#define _PIN_10 PINB
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#define _PIN_11 PINB
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#define _PIN_12 PINB
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#define _PIN_13 PINB
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#define _PIN_14 PINC
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#define _PIN_15 PINC
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#define _PIN_16 PINC
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#define _PIN_17 PINC
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#define _PIN_18 PINC
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#define _PIN_19 PINC
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#define _PIN_20 PINC
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#define _PIN_21 PINC
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#define _DDR_0 DDRD
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#define _DDR_1 DDRD
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#define _DDR_2 DDRD
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#define _DDR_3 DDRD
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#define _DDR_4 DDRD
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#define _DDR_5 DDRD
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#define _DDR_6 DDRD
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#define _DDR_7 DDRD
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#define _DDR_8 DDRB
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#define _DDR_9 DDRB
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#define _DDR_10 DDRB
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#define _DDR_11 DDRB
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#define _DDR_12 DDRB
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#define _DDR_13 DDRB
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#define _DDR_14 DDRC
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#define _DDR_15 DDRC
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#define _DDR_16 DDRC
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#define _DDR_17 DDRC
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#define _DDR_18 DDRC
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#define _DDR_19 DDRC
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#define _DDR_20 DDRC
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#define _DDR_21 DDRC
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#define _PN_0 0
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#define _PN_1 1
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#define _PN_2 2
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#define _PN_3 3
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#define _PN_4 4
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#define _PN_5 5
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#define _PN_6 6
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#define _PN_7 7
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#define _PN_8 0
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#define _PN_9 1
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#define _PN_10 2
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#define _PN_11 3
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#define _PN_12 4
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#define _PN_13 5
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#define _PN_14 0
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#define _PN_15 1
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#define _PN_16 2
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#define _PN_17 3
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#define _PN_18 4
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#define _PN_19 5
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#define _PN_20 6
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#define _PN_21 7
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