qmk-firmware/keyboard/clueboard2/backlight.c

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#include <avr/io.h>
#include "backlight.h"
#include "print.h"
/* Clueboard 2.0 LED locations:
*
* Capslock: B4, pull high to turn on
* LCtrl: Shared with Capslock, DO NOT INSTALL LED'S IN BOTH
* Page Up: B7, pull high to turn on
* Escape: D6, pull high to turn on
* Arrows: D4, pull high to turn on
*/
void init_backlight_pin(void) {
print("init_backlight_pin()\n");
// Set our LED pins as output
DDRD |= (1<<6); // Esc
DDRB |= (1<<7); // Page Up
DDRD |= (1<<4); // Arrows
// Set our LED pins low
PORTD &= ~(1<<6); // Esc
PORTB &= ~(1<<7); // Page Up
PORTD &= ~(1<<4); // Arrows
}
void backlight_set(uint8_t level) {
if ( level == 0 ) {
// Turn off light
PORTD |= (1<<6); // Esc
PORTB |= (1<<7); // Page Up
PORTD |= (1<<4); // Arrows
} else {
// Turn on light
PORTD &= ~(1<<6); // Esc
PORTB &= ~(1<<7); // Page Up
PORTD &= ~(1<<4); // Arrows
}
}