diff options
Diffstat (limited to 'quantum/template/template.c')
| -rw-r--r-- | quantum/template/template.c | 68 |
1 files changed, 65 insertions, 3 deletions
diff --git a/quantum/template/template.c b/quantum/template/template.c index cc52e496ff..649072eb2e 100644 --- a/quantum/template/template.c +++ b/quantum/template/template.c @@ -11,8 +11,9 @@ void matrix_scan_user(void) { } __attribute__ ((weak)) -void process_action_user(keyrecord_t *record) { +bool process_action_user(keyrecord_t *record) { // leave this function blank - it can be defined in a keymap file + return true; } __attribute__ ((weak)) @@ -34,11 +35,11 @@ void matrix_scan_kb(void) { matrix_scan_user(); } -void process_action_kb(keyrecord_t *record) { +bool process_action_kb(keyrecord_t *record) { // put your per-action keyboard code here // runs for every action, just before processing by the firmware - process_action_user(record); + return process_action_user(record); } void led_set_kb(uint8_t usb_led) { @@ -46,3 +47,64 @@ void led_set_kb(uint8_t usb_led) { led_set_user(usb_led); } + +#ifdef BACKLIGHT_ENABLE +#define CHANNEL OCR1C + +void backlight_init_ports() +{ + + // Setup PB7 as output and output low. + DDRB |= (1<<7); + PORTB &= ~(1<<7); + + // Use full 16-bit resolution. + ICR1 = 0xFFFF; + + // I could write a wall of text here to explain... but TL;DW + // Go read the ATmega32u4 datasheet. + // And this: http://blog.saikoled.com/post/43165849837/secret-konami-cheat-code-to-high-resolution-pwm-on + + // Pin PB7 = OCR1C (Timer 1, Channel C) + // Compare Output Mode = Clear on compare match, Channel C = COM1C1=1 COM1C0=0 + // (i.e. start high, go low when counter matches.) + // WGM Mode 14 (Fast PWM) = WGM13=1 WGM12=1 WGM11=1 WGM10=0 + // Clock Select = clk/1 (no prescaling) = CS12=0 CS11=0 CS10=1 + + TCCR1A = _BV(COM1C1) | _BV(WGM11); // = 0b00001010; + TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10); // = 0b00011001; + + backlight_init(); +} + +void backlight_set(uint8_t level) +{ + if ( level == 0 ) + { + // Turn off PWM control on PB7, revert to output low. + TCCR1A &= ~(_BV(COM1C1)); + CHANNEL = 0x0; + // Prevent backlight blink on lowest level + PORTB &= ~(_BV(PORTB7)); + } + else if ( level == BACKLIGHT_LEVELS ) + { + // Prevent backlight blink on lowest level + PORTB &= ~(_BV(PORTB7)); + // Turn on PWM control of PB7 + TCCR1A |= _BV(COM1C1); + // Set the brightness + CHANNEL = 0xFFFF; + } + else + { + // Prevent backlight blink on lowest level + PORTB &= ~(_BV(PORTB7)); + // Turn on PWM control of PB7 + TCCR1A |= _BV(COM1C1); + // Set the brightness + CHANNEL = 0xFFFF >> ((BACKLIGHT_LEVELS - level) * ((BACKLIGHT_LEVELS + 1) / 2)); + } +} + +#endif
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