50 lines
1.0 KiB
C
50 lines
1.0 KiB
C
#include <avr/io.h>
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#ifndef __BASE_H__
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#define __BASE_H__
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#define PIN_OUT 1
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#define PIN_IN 0
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typedef struct IO_PIN {
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volatile uint8_t *ddr;
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volatile uint8_t *port;
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uint8_t addr;
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} io_pin_t;
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/*
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#define GPIOA(addr) (io_pin_t){ .ddr = &DDRA, .port = &PORTA, .addr = addr }
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#define GPIOB(addr) (io_pin_t){ .ddr = &DDRB, .port = &PORTB, .addr = addr }
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#define GPIOC(addr) (io_pin_t){ .ddr = &DDRC, .port = &PORTC, .addr = addr }
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#define GPIOD(addr) (io_pin_t){ .ddr = &DDRD, .port = &PORTD, .addr = addr }
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*/
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inline void set_pin_direction(io_pin_t *pin, int direction) {
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if (direction == PIN_OUT) {
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*(pin->ddr) |= _BV(pin->addr);
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} else {
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*(pin->ddr) &= ~(_BV(pin->addr));
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}
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}
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inline void set_pin(io_pin_t *pin) {
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*(pin->port) |= _BV(pin->addr);
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}
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inline void clear_pin(io_pin_t *pin) {
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*(pin->port) &= ~(_BV(pin->addr));
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}
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typedef struct RNG {
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uint8_t mod;
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int8_t a;
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int8_t c;
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uint8_t seed;
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} rng_t;
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rng_t rng_new(uint8_t seed);
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uint8_t rng_sample(rng_t *state);
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#endif
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