diff options
Diffstat (limited to 'keyboards/ymdk_np21/backlight.c')
| -rw-r--r-- | keyboards/ymdk_np21/backlight.c | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/keyboards/ymdk_np21/backlight.c b/keyboards/ymdk_np21/backlight.c deleted file mode 100644 index fbd241fa9..000000000 --- a/keyboards/ymdk_np21/backlight.c +++ /dev/null @@ -1,213 +0,0 @@ -/** - * Backlighting code for PS2AVRGB boards (ATMEGA32A) - * Kenneth A. (github.com/krusli | krusli.me) - */ - -#include "backlight.h" -#include "quantum.h" - -#include <avr/pgmspace.h> -#include <avr/interrupt.h> - -#include "backlight_custom.h" -#include "breathing_custom.h" - -// DEBUG -#include <stdlib.h> -#include <stdio.h> - -// Port D: digital pins of the AVR chipset -#define NUMLOCK_PORT (1 << 0) // D0 -#define CAPSLOCK_PORT (1 << 1) // D1 -#define BACKLIGHT_PORT (1 << 4) // D4 -#define SCROLLLOCK_PORT (1 << 6) // D6 - -#define TIMER_CLK_DIV64 0x03 ///< Timer clocked at F_CPU/64 -#define TIMER1PRESCALE TIMER_CLK_DIV64 ///< timer 1 prescaler default - -#define TIMER_PRESCALE_MASK 0x07 ///< Timer Prescaler Bit-Mask - -#define PWM_MAX 0xFF -#define TIMER_TOP 255 // 8 bit PWM - -extern backlight_config_t backlight_config; - -/** - * References - * Port Registers: https://www.arduino.cc/en/Reference/PortManipulation - * TCCR1A: https://electronics.stackexchange.com/questions/92350/what-is-the-difference-between-tccr1a-and-tccr1b - * Timers: http://www.avrbeginners.net/architecture/timers/timers.html - * 16-bit timer setup: http://sculland.com/ATmega168/Interrupts-And-Timers/16-Bit-Timer-Setup/ - * PS2AVRGB firmware: https://github.com/showjean/ps2avrU/tree/master/firmware - */ - -// @Override -// turn LEDs on and off depending on USB caps/num/scroll lock states. -__attribute__ ((weak)) -void led_set_user(uint8_t usb_led) { - if (usb_led & (1 << USB_LED_NUM_LOCK)) { - // turn on - DDRD |= NUMLOCK_PORT; - PORTD |= NUMLOCK_PORT; - } else { - // turn off - DDRD &= ~NUMLOCK_PORT; - PORTD &= ~NUMLOCK_PORT; - } - - if (usb_led & (1 << USB_LED_CAPS_LOCK)) { - DDRD |= CAPSLOCK_PORT; - PORTD |= CAPSLOCK_PORT; - } else { - DDRD &= ~CAPSLOCK_PORT; - PORTD &= ~CAPSLOCK_PORT; - } - - if (usb_led & (1 << USB_LED_SCROLL_LOCK)) { - DDRD |= SCROLLLOCK_PORT; - PORTD |= SCROLLLOCK_PORT; - } else { - DDRD &= ~SCROLLLOCK_PORT; - PORTD &= ~SCROLLLOCK_PORT; - } -} - -#ifdef BACKLIGHT_ENABLE - -// sets up Timer 1 for 8-bit PWM -void timer1PWMSetup(void) { // NOTE ONLY CALL THIS ONCE - // default 8 bit mode - TCCR1A &= ~(1 << 1); // cbi(TCCR1A,PWM11); <- set PWM11 bit to HIGH - TCCR1A |= (1 << 0); // sbi(TCCR1A,PWM10); <- set PWM10 bit to LOW - - // clear output compare value A - // outb(OCR1AH, 0); - // outb(OCR1AL, 0); - - // clear output comparator registers for B - OCR1BH = 0; // outb(OCR1BH, 0); - OCR1BL = 0; // outb(OCR1BL, 0); -} - -bool is_init = false; -void timer1Init(void) { - // timer1SetPrescaler(TIMER1PRESCALE) - // set to DIV/64 - (TCCR1B) = ((TCCR1B) & ~TIMER_PRESCALE_MASK) | TIMER1PRESCALE; - - // reset TCNT1 - TCNT1H = 0; // outb(TCNT1H, 0); - TCNT1L = 0; // outb(TCNT1L, 0); - - // TOIE1: Timer Overflow Interrupt Enable (Timer 1); - TIMSK |= _BV(TOIE1); // sbi(TIMSK, TOIE1); - - is_init = true; -} - -void timer1UnInit(void) { - // set prescaler back to NONE - (TCCR1B) = ((TCCR1B) & ~TIMER_PRESCALE_MASK) | 0x00; // TIMERRTC_CLK_STOP - - // disable timer overflow interrupt - TIMSK &= ~_BV(TOIE1); // overflow bit? - - setPWM(0); - - is_init = false; -} - - -// handle TCNT1 overflow -//! Interrupt handler for tcnt1 overflow interrupt -ISR(TIMER1_OVF_vect, ISR_NOBLOCK) -{ - // sei(); - // handle breathing here - #ifdef BACKLIGHT_BREATHING - if (is_breathing()) { - custom_breathing_handler(); - } - #endif - - // TODO call user defined function -} - -// enable timer 1 PWM -// timer1PWMBOn() -void timer1PWMBEnable(void) { - // turn on channel B (OC1B) PWM output - // set OC1B as non-inverted PWM - TCCR1A |= _BV(COM1B1); - TCCR1A &= ~_BV(COM1B0); -} - -// disable timer 1 PWM -// timer1PWMBOff() -void timer1PWMBDisable(void) { - TCCR1A &= ~_BV(COM1B1); - TCCR1A &= ~_BV(COM1B0); -} - -void enableBacklight(void) { - DDRD |= BACKLIGHT_PORT; // set digital pin 4 as output - PORTD |= BACKLIGHT_PORT; // set digital pin 4 to high -} - -void disableBacklight(void) { - // DDRD &= ~BACKLIGHT_PORT; // set digital pin 4 as input - PORTD &= ~BACKLIGHT_PORT; // set digital pin 4 to low -} - -void startPWM(void) { - timer1Init(); - timer1PWMBEnable(); - enableBacklight(); -} - -void stopPWM(void) { - timer1UnInit(); - disableBacklight(); - timer1PWMBDisable(); -} - -void b_led_init_ports(void) { - /* turn backlight on/off depending on user preference */ - #if BACKLIGHT_ON_STATE == 0 - // DDRx register: sets the direction of Port D - // DDRD &= ~BACKLIGHT_PORT; // set digital pin 4 as input - PORTD &= ~BACKLIGHT_PORT; // set digital pin 4 to low - #else - DDRD |= BACKLIGHT_PORT; // set digital pin 4 as output - PORTD |= BACKLIGHT_PORT; // set digital pin 4 to high - #endif - - timer1PWMSetup(); - startPWM(); - - #ifdef BACKLIGHT_BREATHING - breathing_enable(); - #endif -} - -void b_led_set(uint8_t level) { - if (level > BACKLIGHT_LEVELS) { - level = BACKLIGHT_LEVELS; - } - - setPWM((int)(TIMER_TOP * (float) level / BACKLIGHT_LEVELS)); -} - -// called every matrix scan -void b_led_task(void) { - // do nothing for now -} - -void setPWM(uint16_t xValue) { - if (xValue > TIMER_TOP) { - xValue = TIMER_TOP; - } - OCR1B = xValue; // timer1PWMBSet(xValue); -} - -#endif // BACKLIGHT_ENABLE |