76 lines
1.5 KiB
C
76 lines
1.5 KiB
C
/*
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Copyright 2014 Ralf Schmitt <ralf@bunkertor.net>
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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 "backlight.h"
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void backlight_init_ports()
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{
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DDRB |= 0b11100000; // PB7 (switch), PB6 (pcb), PB5 (caps)
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}
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void backlight_set(uint8_t level)
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{
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(level & BACKLIGHT_SWITCH) ? backlight_switch_enable() : backlight_switch_disable();
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(level & BACKLIGHT_PCB) ? backlight_pcb_enable() : backlight_pcb_disable();
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}
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void backlight_switch_enable()
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{
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PORTB |= 0b10000000;
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}
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void backlight_switch_disable()
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{
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PORTB &= ~0b10000000;
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}
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void backlight_switch_invert()
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{
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PORTB ^= 0b10000000;
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}
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void backlight_pcb_enable()
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{
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PORTB |= 0b01000000;
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}
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void backlight_pcb_disable()
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{
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PORTB &= ~0b01000000;
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}
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void backlight_pcb_invert()
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{
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PORTB ^= 0b01000000;
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}
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void backlight_caps_enable()
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{
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PORTB |= 0b00100000;
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}
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void backlight_caps_disable()
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{
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PORTB &= ~0b00100000;
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}
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void backlight_caps_invert()
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{
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PORTB ^= 0b00100000;
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}
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