forked from forks/qmk_firmware
303 lines
6.9 KiB
C
303 lines
6.9 KiB
C
#include "planck.h"
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__attribute__ ((weak))
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void matrix_init_user(void) {}
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__attribute__ ((weak))
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void matrix_scan_user(void) {}
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__attribute__ ((weak))
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bool process_action_user(keyrecord_t *record) {
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return true;
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}
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__attribute__ ((weak))
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void led_set_user(uint8_t usb_led) {}
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void matrix_init_kb(void) {
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#ifdef BACKLIGHT_ENABLE
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backlight_init_ports();
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#endif
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// Turn status LED on
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DDRE |= (1<<6);
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PORTE |= (1<<6);
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matrix_init_user();
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}
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void matrix_scan_kb(void) {
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matrix_scan_user();
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}
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bool process_action_kb(keyrecord_t *record) {
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return process_action_user(record);
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}
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void led_set_kb(uint8_t usb_led) {
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// put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
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led_set_user(usb_led);
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}
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#ifdef BACKLIGHT_ENABLE
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#define CHANNEL OCR1C
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#define BREATHING_NO_HALT 0
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#define BREATHING_HALT_OFF 1
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#define BREATHING_HALT_ON 2
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static uint8_t breath_intensity;
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static uint8_t breath_speed;
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static uint16_t breathing_index;
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static uint8_t breathing_halt;
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void backlight_init_ports()
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{
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// Setup PB7 as output and output low.
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DDRB |= (1<<7);
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PORTB &= ~(1<<7);
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// Use full 16-bit resolution.
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ICR1 = 0xFFFF;
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// I could write a wall of text here to explain... but TL;DW
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// Go read the ATmega32u4 datasheet.
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// And this: http://blog.saikoled.com/post/43165849837/secret-konami-cheat-code-to-high-resolution-pwm-on
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// Pin PB7 = OCR1C (Timer 1, Channel C)
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// Compare Output Mode = Clear on compare match, Channel C = COM1C1=1 COM1C0=0
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// (i.e. start high, go low when counter matches.)
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// WGM Mode 14 (Fast PWM) = WGM13=1 WGM12=1 WGM11=1 WGM10=0
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// Clock Select = clk/1 (no prescaling) = CS12=0 CS11=0 CS10=1
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TCCR1A = _BV(COM1C1) | _BV(WGM11); // = 0b00001010;
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TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10); // = 0b00011001;
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backlight_init();
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breathing_defaults();
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}
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void backlight_set(uint8_t level)
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{
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// Prevent backlight blink on lowest level
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PORTB &= ~(_BV(PORTB7));
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if ( level == 0 )
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{
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// Turn off PWM control on PB7, revert to output low.
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TCCR1A &= ~(_BV(COM1C1));
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CHANNEL = 0x0;
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}
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else if ( level == BACKLIGHT_LEVELS )
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{
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// Turn on PWM control of PB7
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TCCR1A |= _BV(COM1C1);
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// Set the brightness
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CHANNEL = 0xFFFF;
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}
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else
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{
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// Turn on PWM control of PB7
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TCCR1A |= _BV(COM1C1);
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// Set the brightness
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CHANNEL = 0xFFFF >> ((BACKLIGHT_LEVELS - level) * ((BACKLIGHT_LEVELS + 1) / 2));
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}
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breathing_intensity_default();
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}
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void breathing_enable(void)
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{
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if (get_backlight_level() == 0)
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{
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breathing_index = 0;
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}
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else
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{
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// Set breathing_index to be at the midpoint (brightest point)
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breathing_index = 0x20 << breath_speed;
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}
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breathing_halt = BREATHING_NO_HALT;
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// Enable breathing interrupt
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TIMSK1 |= _BV(OCIE1A);
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}
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void breathing_pulse(void)
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{
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if (get_backlight_level() == 0)
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{
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breathing_index = 0;
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}
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else
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{
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// Set breathing_index to be at the midpoint + 1 (brightest point)
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breathing_index = 0x21 << breath_speed;
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}
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breathing_halt = BREATHING_HALT_ON;
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// Enable breathing interrupt
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TIMSK1 |= _BV(OCIE1A);
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}
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void breathing_disable(void)
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{
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// Disable breathing interrupt
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TIMSK1 &= ~_BV(OCIE1A);
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backlight_set(get_backlight_level());
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}
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void breathing_self_disable(void)
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{
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if (get_backlight_level() == 0)
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{
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breathing_halt = BREATHING_HALT_OFF;
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}
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else
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{
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breathing_halt = BREATHING_HALT_ON;
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}
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//backlight_set(get_backlight_level());
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}
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void breathing_toggle(void)
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{
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if (!is_breathing())
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{
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if (get_backlight_level() == 0)
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{
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breathing_index = 0;
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}
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else
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{
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// Set breathing_index to be at the midpoint + 1 (brightest point)
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breathing_index = 0x21 << breath_speed;
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}
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breathing_halt = BREATHING_NO_HALT;
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}
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// Toggle breathing interrupt
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TIMSK1 ^= _BV(OCIE1A);
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// Restore backlight level
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if (!is_breathing())
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{
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backlight_set(get_backlight_level());
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}
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}
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bool is_breathing(void)
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{
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return (TIMSK1 && _BV(OCIE1A));
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}
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void breathing_intensity_default(void)
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{
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//breath_intensity = (uint8_t)((uint16_t)100 * (uint16_t)get_backlight_level() / (uint16_t)BACKLIGHT_LEVELS);
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breath_intensity = ((BACKLIGHT_LEVELS - get_backlight_level()) * ((BACKLIGHT_LEVELS + 1) / 2));
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}
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void breathing_intensity_set(uint8_t value)
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{
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breath_intensity = value;
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}
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void breathing_speed_default(void)
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{
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breath_speed = 4;
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}
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void breathing_speed_set(uint8_t value)
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{
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bool is_breathing_now = is_breathing();
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uint8_t old_breath_speed = breath_speed;
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if (is_breathing_now)
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{
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// Disable breathing interrupt
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TIMSK1 &= ~_BV(OCIE1A);
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}
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breath_speed = value;
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if (is_breathing_now)
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{
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// Adjust index to account for new speed
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breathing_index = (( (uint8_t)( (breathing_index) >> old_breath_speed ) ) & 0x3F) << breath_speed;
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// Enable breathing interrupt
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TIMSK1 |= _BV(OCIE1A);
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}
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}
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void breathing_speed_inc(uint8_t value)
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{
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if ((uint16_t)(breath_speed - value) > 10 )
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{
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breathing_speed_set(0);
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}
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else
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{
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breathing_speed_set(breath_speed - value);
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}
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}
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void breathing_speed_dec(uint8_t value)
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{
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if ((uint16_t)(breath_speed + value) > 10 )
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{
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breathing_speed_set(10);
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}
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else
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{
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breathing_speed_set(breath_speed + value);
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}
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}
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void breathing_defaults(void)
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{
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breathing_intensity_default();
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breathing_speed_default();
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breathing_halt = BREATHING_NO_HALT;
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}
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/* Breathing Sleep LED brighness(PWM On period) table
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* (64[steps] * 4[duration]) / 64[PWM periods/s] = 4 second breath cycle
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*
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* http://www.wolframalpha.com/input/?i=%28sin%28+x%2F64*pi%29**8+*+255%2C+x%3D0+to+63
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* (0..63).each {|x| p ((sin(x/64.0*PI)**8)*255).to_i }
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*/
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static const uint8_t breathing_table[64] PROGMEM = {
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 4, 6, 10,
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15, 23, 32, 44, 58, 74, 93, 113, 135, 157, 179, 199, 218, 233, 245, 252,
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255, 252, 245, 233, 218, 199, 179, 157, 135, 113, 93, 74, 58, 44, 32, 23,
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15, 10, 6, 4, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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};
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ISR(TIMER1_COMPA_vect)
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{
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// CHANNEL = (pgm_read_byte(&breathing_table[ ( (uint8_t)( (breathing_index++) >> breath_speed ) ) & 0x3F ] )) * breath_intensity;
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uint8_t local_index = ( (uint8_t)( (breathing_index++) >> breath_speed ) ) & 0x3F;
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if (((breathing_halt == BREATHING_HALT_ON) && (local_index == 0x20)) || ((breathing_halt == BREATHING_HALT_OFF) && (local_index == 0x3F)))
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{
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// Disable breathing interrupt
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TIMSK1 &= ~_BV(OCIE1A);
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}
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CHANNEL = (uint16_t)(((uint16_t)pgm_read_byte(&breathing_table[local_index]) * 257)) >> breath_intensity;
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}
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#endif
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