button.h

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/* -*- mode: c; c-basic-offset: 4; -*- */
#ifndef __BUTTON__
#define __BUTTON__

#include "libstd/nexus.h"
#include "libhw/hardware.h"

#define button_metadata_init_(_name, _base, _pin, _interrupt)   \
    hw_metadata _name;                      \
    _name.button = (hw_button_metadata) {           \
    .base     = (memory_address_t) _base,           \
    .pin      = (memory_address_t) _pin,            \
    .interrupt = (uint32_t) _interrupt          \
    }


#define button_metadata_init(_base, _pin, _interrupt) \
    button_metadata_init_(button_metadata, _base, _pin, _interrupt)

#define BUTTON_LEFT          GPIO_PIN_4
#define BUTTON_RIGHT         GPIO_PIN_0
#define BUTTONS_BOTH         (BUTTON_LEFT | BUTTON_RIGHT)

void button_init(hw_metadata);

void button_set_interrupt(hw_metadata);

#endif  /* __BUTTON__ */