37 lines
529 B
C
37 lines
529 B
C
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#include <avr/io.h>
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#include "backlight.h"
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uint8_t led_counter = 0;
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uint8_t led_level = 0;
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void bl_set()
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{
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led_counter++;
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if (led_counter > 7) {
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led_counter = 0;
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}
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if (led_counter < led_level) {
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// output high
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DDRB |= (1<<2);
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PORTB |= (1<<2);
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} else {
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// Hi-Z
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DDRB &= ~(1<<2);
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PORTB &= ~(1<<2);
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}
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}
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void backlight_init_ports()
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{
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DDRB &= ~(1<<2);
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PORTB &= ~(1<<2);
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backlight_init();
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}
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void backlight_set(uint8_t level)
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{
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led_level = level;
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} |