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#ifndef LED_H
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#define LED_H
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#include <avr/io.h>
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enum color_t {
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  OFF, RED, YELLOW, GREEN
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};
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static inline void led_init() {DDRC |= _BV(DDC1) | _BV(DDC0);}
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static inline void led_off() {PORTC &= ~(_BV(PC1) | _BV(PC0));}
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static inline void led_red() {PORTC = (PORTC & ~_BV(PC0)) | _BV(PC1);}
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static inline void led_yellow() {PORTC |= _BV(PC1) | _BV(PC0);}
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static inline void led_green() {PORTC = (PORTC & ~_BV(PC1)) | _BV(PC0);}
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/* Starts LED blinking */ 
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void led_blink_start(unsigned int period_ms, char n_times, enum color_t color);
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/* Returns nonzero if blinking has finished */
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char led_blink_done();
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/* Call this every TICK_MS to handle LED blinking */
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void led_tick();
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#endif