day04/ex02/include/timer1.h

#ifndef TIMER1_H
#define TIMER1_H

#include <avr/io.h>
#include "mystd.h"

#include "timer_global.h"

static inline void t1_init_fpwm_14(e_timer_prescaler prescaler) {
	// Fast PWM (8-bit): WGM22:0 = 0b011
	TCCR1A = BV(WGM11) | BV(WGM12);
	TCCR1B = BV(WGM13);

	// set the correct prescaler
	switch (prescaler) {
		case (PRESCALER_1): {
			TCCR1B |= (BV(CS10));
			break;
		}
		case (PRESCALER_8): {
			TCCR1B |= (BV(CS11));
			break;
		}
		case (PRESCALER_64): {
			TCCR1B |= (BV(CS11) | BV(CS10));
			break;
		}
		case (PRESCALER_256): {
			TCCR1B |= (BV(CS12));
			break;
		}
		case (PRESCALER_1024): {
			TCCR1B |= (BV(CS12) | BV(CS10));
			break;
		}
		case (PRESCALER_OFF): {
			break;
		}
	}
}

static inline void t1_init_ctc_4(e_timer_prescaler prescaler) {
	// CTC mode 4
	TCCR1A = BV(WGM12);
	TCCR1B = 0;

	// set the correct prescaler
	switch (prescaler) {
		case (PRESCALER_1): {
			TCCR1B |= (BV(CS10));
			break;
		}
		case (PRESCALER_8): {
			TCCR1B |= (BV(CS11));
			break;
		}
		case (PRESCALER_64): {
			TCCR1B |= (BV(CS11) | BV(CS10));
			break;
		}
		case (PRESCALER_256): {
			TCCR1B |= (BV(CS12));
			break;
		}
		case (PRESCALER_1024): {
			TCCR1B |= (BV(CS12) | BV(CS10));
			break;
		}
		case (PRESCALER_OFF): {
			break;
		}
	}
}

static inline void t1_set_counter(uint16_t val) {
	TCNT1 = val;
}

static inline void t1_set_icr1(uint16_t value) {
	ICR1 = value;
}

static inline void t1_overflow_interrupt(bool enable) {
	if (enable)
		TIMSK1 |= BV(TOIE1);
	else
		TIMSK1 &= ~BV(TOIE1);
}

static inline void t1_interrupt(enum e_timer_output output, bool enable) {
	if (output & TO_A) {
		if (enable)
			TIMSK1 |= BV(OCIE1A);
		else
			TIMSK1 &= ~BV(OCIE1A);
	}
	if (output & TO_B) {
		if (enable)
			TIMSK1 |= BV(OCIE1B);
		else
			TIMSK1 &= ~BV(OCIE1B);
	}
}

static inline void t1_set_ocr(enum e_timer_output output, uint16_t value) {
	if (output & TO_A)
		OCR1A = value;
	if (output & TO_B)
		OCR1B = value;
}

static inline void t1_set_out_mode(enum e_timer_output output, enum e_timer_output_mode mode) {
	if (output & TO_A) {
		TCCR1A &= ~(BV(COM1A1) | BV(COM1A0));
		switch (mode) {
			case (TOM_00): {
				break;
			}
			case (TOM_10): {
				TCCR1A |= (BV(COM1A1));
				break;
			}
			case (TOM_01): {
				TCCR1A |= (BV(COM1A0));
				break;
			}
			case (TOM_11): {
				TCCR1A |= (BV(COM1A1) | BV(COM1A0));
				break;
			}
		}
	}
	if (output & TO_B) {
		TCCR1A &= ~(BV(COM1B1) | BV(COM1B0));
		switch (mode) {
			case (TOM_00): {
				break;
			}
			case (TOM_10): {
				TCCR1A |= (BV(COM1B1));
				break;
			}
			case (TOM_01): {
				TCCR1A |= (BV(COM1B0));
				break;
			}
			case (TOM_11): {
				TCCR1A |= (BV(COM1B1) | BV(COM1B0));
				break;
			}
		}
	}
}

// OC2B => RED   => PD3
// OC0B => GREEN => PD5
// OC0A => BLUE  => PD6

#endif /* TIMER1_H */