4 void matrix_init_user(void) {}
7 void matrix_scan_user(void) {}
10 void process_action_user(keyrecord_t *record) {}
12 void matrix_init_kb(void) {
13 #ifdef BACKLIGHT_ENABLE
14 backlight_init_ports();
17 #ifdef RGBLIGHT_ENABLE
28 void matrix_scan_kb(void) {
32 void process_action_kb(keyrecord_t *record) {
33 process_action_user(record);
36 #ifdef BACKLIGHT_ENABLE
39 void backlight_init_ports()
42 // Setup PB7 as output and output low.
46 // Use full 16-bit resolution.
49 // I could write a wall of text here to explain... but TL;DW
50 // Go read the ATmega32u4 datasheet.
51 // And this: http://blog.saikoled.com/post/43165849837/secret-konami-cheat-code-to-high-resolution-pwm-on
53 // Pin PB7 = OCR1C (Timer 1, Channel C)
54 // Compare Output Mode = Clear on compare match, Channel C = COM1C1=1 COM1C0=0
55 // (i.e. start high, go low when counter matches.)
56 // WGM Mode 14 (Fast PWM) = WGM13=1 WGM12=1 WGM11=1 WGM10=0
57 // Clock Select = clk/1 (no prescaling) = CS12=0 CS11=0 CS10=1
59 TCCR1A = _BV(COM1C1) | _BV(WGM11); // = 0b00001010;
60 TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10); // = 0b00011001;
65 void backlight_set(uint8_t level)
69 // Turn off PWM control on PB7, revert to output low.
70 TCCR1A &= ~(_BV(COM1C1));
72 // Prevent backlight blink on lowest level
73 PORTB &= ~(_BV(PORTB7));
75 else if ( level == BACKLIGHT_LEVELS )
77 // Prevent backlight blink on lowest level
78 PORTB &= ~(_BV(PORTB7));
79 // Turn on PWM control of PB7
80 TCCR1A |= _BV(COM1C1);
86 // Prevent backlight blink on lowest level
87 PORTB &= ~(_BV(PORTB7));
88 // Turn on PWM control of PB7
89 TCCR1A |= _BV(COM1C1);
91 CHANNEL = 0xFFFF >> ((BACKLIGHT_LEVELS - level) * ((BACKLIGHT_LEVELS + 1) / 2));