47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
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/*
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Copyright 2013 Kai Ryu <kai1103@gmail.com>
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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, either version 2 of the License, or
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(at your option) any later version.
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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, see <http://www.gnu.org/licenses/>.
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*/
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include "backlight.h"
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/* Backlight pin configuration
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* PF7 PF6 PF5
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*/
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void backlight_set(uint8_t level)
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{
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switch (level) {
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case 0:
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DDRF &= ~(1<<PF7 | 1<<PF6 | 1<<PF5);
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break;
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case 1:
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DDRF &= ~(1<<PF6 | 1<<PF5);
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DDRF |= (1<<PF7);
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PORTF &= ~(1<<PF7);
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break;
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case 2:
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DDRF &= ~(1<<PF5);
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DDRF |= (1<<PF7 | 1<<PF6);
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PORTF &= ~(1<<PF7 | 1<<PF6);
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break;
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case 3:
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DDRF |= (1<<PF7 | 1<<PF6 | 1<<PF5);
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PORTF &= ~(1<<PF7 | 1<<PF6 | 1<<PF5);
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break;
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}
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}
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