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-rw-r--r--keyboards/percent/skog/backlight.c211
-rw-r--r--keyboards/percent/skog/backlight_custom.h13
-rw-r--r--keyboards/percent/skog/breathing_custom.h140
-rw-r--r--keyboards/percent/skog/config.h6
-rw-r--r--keyboards/percent/skog/rules.mk4
-rw-r--r--keyboards/percent/skog/skog.c26
6 files changed, 16 insertions, 384 deletions
diff --git a/keyboards/percent/skog/backlight.c b/keyboards/percent/skog/backlight.c
deleted file mode 100644
index 94e8126d8..000000000
--- a/keyboards/percent/skog/backlight.c
+++ /dev/null
@@ -1,211 +0,0 @@
1/**
2 * Backlighting code for PS2AVRGB boards (ATMEGA32A)
3 * Kenneth A. (github.com/krusli | krusli.me)
4 */
5
6#include "backlight.h"
7#include "quantum.h"
8
9#include <avr/pgmspace.h>
10#include <avr/interrupt.h>
11
12#include "backlight_custom.h"
13#include "breathing_custom.h"
14
15// DEBUG
16#include <stdlib.h>
17#include <stdio.h>
18
19// Port D: digital pins of the AVR chipset
20#define NUMLOCK_PORT (1 << 0) // D0
21#define CAPSLOCK_PORT (1 << 1) // D1
22#define BACKLIGHT_PORT (1 << 4) // D4
23#define SCROLLLOCK_PORT (1 << 6) // D6
24
25#define TIMER_CLK_DIV64 0x03 ///< Timer clocked at F_CPU/64
26#define TIMER1PRESCALE TIMER_CLK_DIV64 ///< timer 1 prescaler default
27
28#define TIMER_PRESCALE_MASK 0x07 ///< Timer Prescaler Bit-Mask
29
30#define PWM_MAX 0xFF
31#define TIMER_TOP 255 // 8 bit PWM
32
33extern backlight_config_t backlight_config;
34
35/**
36 * References
37 * Port Registers: https://www.arduino.cc/en/Reference/PortManipulation
38 * TCCR1A: https://electronics.stackexchange.com/questions/92350/what-is-the-difference-between-tccr1a-and-tccr1b
39 * Timers: http://www.avrbeginners.net/architecture/timers/timers.html
40 * 16-bit timer setup: http://sculland.com/ATmega168/Interrupts-And-Timers/16-Bit-Timer-Setup/
41 * PS2AVRGB firmware: https://github.com/showjean/ps2avrU/tree/master/firmware
42 */
43
44// @Override
45// turn LEDs on and off depending on USB caps/num/scroll lock states.
46__attribute__ ((weak))
47void led_set_user(uint8_t usb_led) {
48 if (usb_led & (1 << USB_LED_NUM_LOCK)) {
49 // turn on
50 DDRD |= NUMLOCK_PORT;
51 PORTD |= NUMLOCK_PORT;
52 } else {
53 // turn off
54 DDRD &= ~NUMLOCK_PORT;
55 PORTD &= ~NUMLOCK_PORT;
56 }
57
58 if (usb_led & (1 << USB_LED_CAPS_LOCK)) {
59 DDRD |= CAPSLOCK_PORT;
60 PORTD |= CAPSLOCK_PORT;
61 } else {
62 DDRD &= ~CAPSLOCK_PORT;
63 PORTD &= ~CAPSLOCK_PORT;
64 }
65
66 if (usb_led & (1 << USB_LED_SCROLL_LOCK)) {
67 DDRD |= SCROLLLOCK_PORT;
68 PORTD |= SCROLLLOCK_PORT;
69 } else {
70 DDRD &= ~SCROLLLOCK_PORT;
71 PORTD &= ~SCROLLLOCK_PORT;
72 }
73}
74
75#ifdef BACKLIGHT_ENABLE
76
77// sets up Timer 1 for 8-bit PWM
78void timer1PWMSetup(void) { // NOTE ONLY CALL THIS ONCE
79 // default 8 bit mode
80 TCCR1A &= ~(1 << 1); // cbi(TCCR1A,PWM11); <- set PWM11 bit to HIGH
81 TCCR1A |= (1 << 0); // sbi(TCCR1A,PWM10); <- set PWM10 bit to LOW
82
83 // clear output compare value A
84 // outb(OCR1AH, 0);
85 // outb(OCR1AL, 0);
86
87 // clear output comparator registers for B
88 OCR1BH = 0; // outb(OCR1BH, 0);
89 OCR1BL = 0; // outb(OCR1BL, 0);
90}
91
92bool is_init = false;
93void timer1Init(void) {
94 // timer1SetPrescaler(TIMER1PRESCALE)
95 // set to DIV/64
96 (TCCR1B) = ((TCCR1B) & ~TIMER_PRESCALE_MASK) | TIMER1PRESCALE;
97
98 // reset TCNT1
99 TCNT1H = 0; // outb(TCNT1H, 0);
100 TCNT1L = 0; // outb(TCNT1L, 0);
101
102 // TOIE1: Timer Overflow Interrupt Enable (Timer 1);
103 TIMSK |= _BV(TOIE1); // sbi(TIMSK, TOIE1);
104
105 is_init = true;
106}
107
108void timer1UnInit(void) {
109 // set prescaler back to NONE
110 (TCCR1B) = ((TCCR1B) & ~TIMER_PRESCALE_MASK) | 0x00; // TIMERRTC_CLK_STOP
111
112 // disable timer overflow interrupt
113 TIMSK &= ~_BV(TOIE1); // overflow bit?
114
115 setPWM(0);
116
117 is_init = false;
118}
119
120
121// handle TCNT1 overflow
122//! Interrupt handler for tcnt1 overflow interrupt
123ISR(TIMER1_OVF_vect, ISR_NOBLOCK)
124{
125 // sei();
126 // handle breathing here
127 #ifdef BACKLIGHT_BREATHING
128 if (is_breathing()) {
129 custom_breathing_handler();
130 }
131 #endif
132}
133
134// enable timer 1 PWM
135// timer1PWMBOn()
136void timer1PWMBEnable(void) {
137 // turn on channel B (OC1B) PWM output
138 // set OC1B as non-inverted PWM
139 TCCR1A |= _BV(COM1B1);
140 TCCR1A &= ~_BV(COM1B0);
141}
142
143// disable timer 1 PWM
144// timer1PWMBOff()
145void timer1PWMBDisable(void) {
146 TCCR1A &= ~_BV(COM1B1);
147 TCCR1A &= ~_BV(COM1B0);
148}
149
150void enableBacklight(void) {
151 DDRD |= BACKLIGHT_PORT; // set digital pin 4 as output
152 PORTD |= BACKLIGHT_PORT; // set digital pin 4 to high
153}
154
155void disableBacklight(void) {
156 // DDRD &= ~BACKLIGHT_PORT; // set digital pin 4 as input
157 PORTD &= ~BACKLIGHT_PORT; // set digital pin 4 to low
158}
159
160void startPWM(void) {
161 timer1Init();
162 timer1PWMBEnable();
163 enableBacklight();
164}
165
166void stopPWM(void) {
167 timer1UnInit();
168 disableBacklight();
169 timer1PWMBDisable();
170}
171
172void b_led_init_ports(void) {
173 /* turn backlight on/off depending on user preference */
174 #if BACKLIGHT_ON_STATE == 0
175 // DDRx register: sets the direction of Port D
176 // DDRD &= ~BACKLIGHT_PORT; // set digital pin 4 as input
177 PORTD &= ~BACKLIGHT_PORT; // set digital pin 4 to low
178 #else
179 DDRD |= BACKLIGHT_PORT; // set digital pin 4 as output
180 PORTD |= BACKLIGHT_PORT; // set digital pin 4 to high
181 #endif
182
183 timer1PWMSetup();
184 startPWM();
185
186 #ifdef BACKLIGHT_BREATHING
187 breathing_enable();
188 #endif
189}
190
191void b_led_set(uint8_t level) {
192 if (level > BACKLIGHT_LEVELS) {
193 level = BACKLIGHT_LEVELS;
194 }
195
196 setPWM((int)(TIMER_TOP * (float) level / BACKLIGHT_LEVELS));
197}
198
199// called every matrix scan
200void b_led_task(void) {
201 // do nothing for now
202}
203
204void setPWM(uint16_t xValue) {
205 if (xValue > TIMER_TOP) {
206 xValue = TIMER_TOP;
207 }
208 OCR1B = xValue; // timer1PWMBSet(xValue);
209}
210
211#endif // BACKLIGHT_ENABLE
diff --git a/keyboards/percent/skog/backlight_custom.h b/keyboards/percent/skog/backlight_custom.h
deleted file mode 100644
index 51365fe3b..000000000
--- a/keyboards/percent/skog/backlight_custom.h
+++ /dev/null
@@ -1,13 +0,0 @@
1/**
2 * Backlighting code for PS2AVRGB boards (ATMEGA32A)
3 * Kenneth A. (github.com/krusli | krusli.me)
4 */
5
6#pragma once
7
8#include <avr/pgmspace.h>
9void b_led_init_ports(void);
10void b_led_set(uint8_t level);
11void b_led_task(void);
12void setPWM(uint16_t xValue);
13
diff --git a/keyboards/percent/skog/breathing_custom.h b/keyboards/percent/skog/breathing_custom.h
deleted file mode 100644
index 71416b1b4..000000000
--- a/keyboards/percent/skog/breathing_custom.h
+++ /dev/null
@@ -1,140 +0,0 @@
1/**
2 * Breathing effect code for PS2AVRGB boards (ATMEGA32A)
3 * Works in conjunction with `backlight.c`.
4 *
5 * Code adapted from `quantum.c` to register with the existing TIMER1 overflow
6 * handler in `backlight.c` instead of setting up its own timer.
7 * Kenneth A. (github.com/krusli | krusli.me)
8 */
9
10#ifdef BACKLIGHT_ENABLE
11#ifdef BACKLIGHT_BREATHING
12
13#include "backlight_custom.h"
14
15#ifndef BREATHING_PERIOD
16#define BREATHING_PERIOD 6
17#endif
18
19#define breathing_min() do {breathing_counter = 0;} while (0)
20#define breathing_max() do {breathing_counter = breathing_period * 244 / 2;} while (0)
21
22// TODO make this share code with quantum.c
23
24#define BREATHING_NO_HALT 0
25#define BREATHING_HALT_OFF 1
26#define BREATHING_HALT_ON 2
27#define BREATHING_STEPS 128
28
29static uint8_t breathing_period = BREATHING_PERIOD;
30static uint8_t breathing_halt = BREATHING_NO_HALT;
31static uint16_t breathing_counter = 0;
32
33static bool breathing = false;
34
35bool is_breathing(void) {
36 return breathing;
37}
38
39// See http://jared.geek.nz/2013/feb/linear-led-pwm
40static uint16_t cie_lightness(uint16_t v) {
41 if (v <= 5243) // if below 8% of max
42 return v / 9; // same as dividing by 900%
43 else {
44 uint32_t y = (((uint32_t) v + 10486) << 8) / (10486 + 0xFFFFUL); // add 16% of max and compare
45 // to get a useful result with integer division, we shift left in the expression above
46 // and revert what we've done again after squaring.
47 y = y * y * y >> 8;
48 if (y > 0xFFFFUL) // prevent overflow
49 return 0xFFFFU;
50 else
51 return (uint16_t) y;
52 }
53}
54
55void breathing_enable(void) {
56 breathing = true;
57 breathing_counter = 0;
58 breathing_halt = BREATHING_NO_HALT;
59 // interrupt already registered
60}
61
62void breathing_pulse(void) {
63 if (get_backlight_level() == 0)
64 breathing_min();
65 else
66 breathing_max();
67 breathing_halt = BREATHING_HALT_ON;
68 // breathing_interrupt_enable();
69 breathing = true;
70}
71
72void breathing_disable(void) {
73 breathing = false;
74 // backlight_set(get_backlight_level());
75 b_led_set(get_backlight_level()); // custom implementation of backlight_set()
76}
77
78void breathing_self_disable(void)
79{
80 if (get_backlight_level() == 0)
81 breathing_halt = BREATHING_HALT_OFF;
82 else
83 breathing_halt = BREATHING_HALT_ON;
84}
85
86void breathing_toggle(void) {
87 if (is_breathing())
88 breathing_disable();
89 else
90 breathing_enable();
91}
92
93void breathing_period_set(uint8_t value)
94{
95 if (!value)
96 value = 1;
97 breathing_period = value;
98}
99
100void breathing_period_default(void) {
101 breathing_period_set(BREATHING_PERIOD);
102}
103
104void breathing_period_inc(void)
105{
106 breathing_period_set(breathing_period+1);
107}
108
109void breathing_period_dec(void)
110{
111 breathing_period_set(breathing_period-1);
112}
113
114/* To generate breathing curve in python:
115 * from math import sin, pi; [int(sin(x/128.0*pi)**4*255) for x in range(128)]
116 */
117static const uint8_t breathing_table[BREATHING_STEPS] PROGMEM = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 28, 32, 36, 41, 46, 51, 57, 63, 70, 76, 83, 91, 98, 106, 113, 121, 129, 138, 146, 154, 162, 170, 178, 185, 193, 200, 207, 213, 220, 225, 231, 235, 240, 244, 247, 250, 252, 253, 254, 255, 254, 253, 252, 250, 247, 244, 240, 235, 231, 225, 220, 213, 207, 200, 193, 185, 178, 170, 162, 154, 146, 138, 129, 121, 113, 106, 98, 91, 83, 76, 70, 63, 57, 51, 46, 41, 36, 32, 28, 24, 20, 17, 15, 12, 10, 8, 6, 5, 4, 3, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
118
119// Use this before the cie_lightness function.
120static inline uint16_t scale_backlight(uint16_t v) {
121 return v / BACKLIGHT_LEVELS * get_backlight_level();
122}
123
124void custom_breathing_handler(void) {
125 uint16_t interval = (uint16_t) breathing_period * 244 / BREATHING_STEPS;
126 // resetting after one period to prevent ugly reset at overflow.
127 breathing_counter = (breathing_counter + 1) % (breathing_period * 244);
128 uint8_t index = breathing_counter / interval % BREATHING_STEPS;
129
130 if (((breathing_halt == BREATHING_HALT_ON) && (index == BREATHING_STEPS / 2)) ||
131 ((breathing_halt == BREATHING_HALT_OFF) && (index == BREATHING_STEPS - 1)))
132 {
133 // breathing_interrupt_disable();
134 }
135
136 setPWM(cie_lightness(scale_backlight((uint16_t) pgm_read_byte(&breathing_table[index]) * 0x0101U)));
137}
138
139#endif // BACKLIGHT_BREATHING
140#endif // BACKLIGHT_ENABLE
diff --git a/keyboards/percent/skog/config.h b/keyboards/percent/skog/config.h
index 7a0c703ec..15844711f 100644
--- a/keyboards/percent/skog/config.h
+++ b/keyboards/percent/skog/config.h
@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
15along with this program. If not, see <http://www.gnu.org/licenses/>. 15along with this program. If not, see <http://www.gnu.org/licenses/>.
16*/ 16*/
17 17
18#ifndef CONFIG_H 18#pragma once
19#define CONFIG_H
20 19
21#define VENDOR_ID 0x20A0 20#define VENDOR_ID 0x20A0
22#define PRODUCT_ID 0x422D 21#define PRODUCT_ID 0x422D
@@ -36,8 +35,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
36#define RGBLED_NUM 2 35#define RGBLED_NUM 2
37#define RGBLIGHT_ANIMATIONS 36#define RGBLIGHT_ANIMATIONS
38 37
38#define BACKLIGHT_PIN D4
39#define BACKLIGHT_LEVELS 5 39#define BACKLIGHT_LEVELS 5
40 40
41#define NO_UART 1 41#define NO_UART 1
42
43#endif
diff --git a/keyboards/percent/skog/rules.mk b/keyboards/percent/skog/rules.mk
index da03a2e0c..0d243b858 100644
--- a/keyboards/percent/skog/rules.mk
+++ b/keyboards/percent/skog/rules.mk
@@ -21,11 +21,7 @@ BACKLIGHT_ENABLE = yes
21RGBLIGHT_ENABLE = yes 21RGBLIGHT_ENABLE = yes
22WS2812_DRIVER = i2c 22WS2812_DRIVER = i2c
23 23
24BACKLIGHT_CUSTOM_DRIVER = yes
25
26OPT_DEFS = -DDEBUG_LEVEL=0 24OPT_DEFS = -DDEBUG_LEVEL=0
27 25
28# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE 26# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
29SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend 27SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend
30
31SRC = backlight.c
diff --git a/keyboards/percent/skog/skog.c b/keyboards/percent/skog/skog.c
index 1c26c550e..241833937 100644
--- a/keyboards/percent/skog/skog.c
+++ b/keyboards/percent/skog/skog.c
@@ -19,20 +19,22 @@ ps2avrGB support code by Kenneth A. (bminiex/.[ch])
19 19
20#include "skog.h" 20#include "skog.h"
21 21
22#include "backlight.h" 22void keyboard_pre_init_kb(void) {
23#include "backlight_custom.h" 23 led_init_ports();
24 24 keyboard_pre_init_user();
25#ifdef BACKLIGHT_ENABLE
26/// Overrides functions in `quantum.c`
27void backlight_init_ports(void) {
28 b_led_init_ports();
29} 25}
30 26
31void backlight_task(void) { 27void led_init_ports(void) {
32 b_led_task(); 28 setPinOutput(D1);
29 setPinOutput(D6);
30 writePinHigh(D1);
31 writePinHigh(D6);
33} 32}
34 33
35void backlight_set(uint8_t level) { 34bool led_update_kb(led_t led_state) {
36 b_led_set(level); 35 if (led_update_user(led_state)) {
36 writePin(D1, !led_state.caps_lock);
37 writePin(D6, !led_state.scroll_lock);
38 }
39 return true;
37} 40}
38#endif
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-11 07:56:49 +0000