91 lines
2.0 KiB
C
91 lines
2.0 KiB
C
/* sd2iec - SD/MMC to Commodore serial bus interface/controller
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Copyright (C) 2007-2009 Ingo Korb <ingo@akana.de>
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Inspiration and low-level SD/MMC access based on code from MMC2IEC
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by Lars Pontoppidan et al., see sdcard.c|h and config.h.
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FAT filesystem access based on code from ChaN and Jim Brain, see ff.c|h.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License only.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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led.c: LED handling
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*/
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#include <avr/io.h>
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#include "config.h"
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#include "led.h"
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static uint8_t led_bright[16]={255,253,252,251,249,247,244,239,232,223,210,191,165,127,74,0};
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static uint8_t curr_bright = 15;
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static uint8_t led_bounce_dir = 1;
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volatile uint8_t led_state;
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void toggle_busy_led(void) {
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PORTB &= ~_BV(PB3);
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DDRB ^= _BV(PB3);
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}
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void set_busy_led(uint8_t state) {
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PORTB &= ~_BV(PB3);
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if(state) {
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DDRB |= _BV(PB3);
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} else {
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DDRB &= ~_BV(PB3);
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}
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}
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void set_pwr_led(uint8_t state) {
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PORTB &= ~_BV(PB0);
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if(state) {
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DDRB |= _BV(PB0);
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} else {
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DDRB &= ~_BV(PB0);
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}
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}
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void set_busy_pwm(uint8_t brightness) {
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OCR0A = led_bright[brightness];
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set_busy_led(1);
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}
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void bounce_busy_led() {
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set_busy_pwm(curr_bright);
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if(led_bounce_dir) {
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curr_bright--;
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if(curr_bright==0) {
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led_bounce_dir = 0;
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}
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} else {
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curr_bright++;
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if(curr_bright==15) {
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led_bounce_dir = 1;
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}
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}
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}
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void led_pwm() {
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set_busy_led(1);
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TCCR0A = 0x83;
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TCCR0B = 0x01;
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}
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void led_std() {
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set_busy_led(0);
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TCCR0A = 0;
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TCCR0B = 0;
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}
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