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#ifndef MY_UTIL_H_
#define MY_UTIL_H_
#ifndef F_CPU
# warning "F_CPU not defined"
# define F_CPU 3686400
#endif
#include <util/delay.h>
#include <stdint.h>
#include <avr/interrupt.h>
#include <avr/pgmspace.h>
#include <avr/cpufunc.h>
#define min(a, b) ({ \
__typeof__(a) __a = (a); \
__typeof__(b) __b = (b); \
__a < __b ? __a : __b; \
})
#define max(a, b) ({ \
__typeof__(a) __a = (a); \
__typeof__(b) __b = (b); \
__a > __b ? __a : __b; \
})
#define clamp(value, min_val, max_val) \
max(min(value, max_val), min_val)
#define abs(val) ({ \
__typeof__(val) __val = (val); \
__val >= 0 ? __val : -__val; \
})
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
/* Progmem pointer annotation. */
#define PROGPTR /* progmem pointer */
#define mb() __asm__ __volatile__("" : : : "memory")
#define noinline __attribute__((__noinline__))
#define _packed __attribute__((__packed__))
typedef _Bool bool;
static inline void irq_disable(void)
{
cli();
mb();
}
static inline void irq_enable(void)
{
mb();
sei();
}
static inline uint8_t irq_disable_save(void)
{
uint8_t sreg = SREG;
cli();
mb();
return sreg;
}
static inline void irq_restore(uint8_t sreg_flags)
{
mb();
SREG = sreg_flags;
}
static inline bool __irqs_enabled(uint8_t sreg_flags)
{
return !!(sreg_flags & (1 << SREG_I));
}
static inline bool irqs_enabled(void)
{
return __irqs_enabled(SREG);
}
#endif /* MY_UTIL_H_ */
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