hw.c

/*
 * TamaLIB - A hardware agnostic Tamagotchi P1 emulation library
 *
 * Copyright (C) 2021 Jean-Christophe Rona <jc@rona.fr>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
//#include <avr/pgmspace.h>
#include "hw.h"
#include "cpu.h"
#include "hal.h"

/* SEG -> LCD mapping */
const static u8_t seg_pos[40] = {0, 1, 2, 3, 4, 5, 6, 7, 32, 8, 9, 10, 11, 12 ,13 ,14, 15, 33, 34, 35, 31, 30, 29, 28, 27, 26, 25, 24, 36, 23, 22, 21, 20, 19, 18, 17, 16, 37, 38, 39};


bool_t hw_init(void)
{
	/* Buttons are active LOW */
	cpu_set_input_pin(PIN_K00, PIN_STATE_HIGH);
	cpu_set_input_pin(PIN_K01, PIN_STATE_HIGH);
	cpu_set_input_pin(PIN_K02, PIN_STATE_HIGH);
	return 0;
}

void hw_release(void)
{
}

void hw_set_lcd_pin(u8_t seg, u8_t com, u8_t val)
{
	if (seg_pos[seg] < LCD_WIDTH) {
		g_hal->set_lcd_matrix(seg_pos[seg], com, val);
	} else {
		/*
		 * IC n -> seg-com|...
		 * IC 0 ->  8-0 |18-3 |19-2
		 * IC 1 ->  8-1 |17-0 |19-3
		 * IC 2 ->  8-2 |17-1 |37-12|38-13|39-14
		 * IC 3 ->  8-3 |17-2 |18-1 |19-0
		 * IC 4 -> 28-12|37-13|38-14|39-15
		 * IC 5 -> 28-13|37-14|38-15
		 * IC 6 -> 28-14|37-15|39-12
		 * IC 7 -> 28-15|38-12|39-13
		 */
		if (seg == 8 && com < 4) {
			g_hal->set_lcd_icon(com, val);
		} else if (seg == 28 && com >= 12) {
			g_hal->set_lcd_icon(com - 8, val);
		}
	}
}

void hw_set_button(button_t btn, btn_state_t state)
{
	pin_state_t pin_state = (state == BTN_STATE_PRESSED) ? PIN_STATE_LOW : PIN_STATE_HIGH;

	switch (btn) {
		case BTN_LEFT:
			cpu_set_input_pin(PIN_K02, pin_state);
			break;

		case BTN_MIDDLE:
			cpu_set_input_pin(PIN_K01, pin_state);
			break;

		case BTN_RIGHT:
			cpu_set_input_pin(PIN_K00, pin_state);
			break;
	}
}

const static uint16_t snd_freq[]= {4096,3279,2731,2341,2048,1638,1365,1170};
void hw_set_buzzer_freq(u4_t freq)
{
  if (freq>7) return;
  g_hal->set_frequency(snd_freq[freq]);
	/*u32_t snd_freq = 0;

	switch (freq) {
		case 0:
			// 4096.0 Hz 
			snd_freq = 4096;
			break;

		case 1:
			// 3276.8 Hz 
			snd_freq = 3279;
			break;

		case 2:
			// 2730.7 Hz 
			snd_freq = 2731;
			break;

		case 3:
			// 2340.6 Hz 
			snd_freq = 2341;
			break;

		case 4:
			// 2048.0 Hz 
			snd_freq = 2048;
			break;

		case 5:
			// 1638.4 Hz 
			snd_freq = 1638;
			break;

		case 6:
			// 1365.3 Hz 
			snd_freq = 1365;
			break;

		case 7:
			// 1170.3 Hz 
			snd_freq = 1170;
			break;
	}

	if (snd_freq != 0) { 
		g_hal->set_frequency(snd_freq);
	}*/
}

void hw_enable_buzzer(bool_t en)
{
	g_hal->play_frequency(en);
}