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Diffstat (limited to 'keyboards/percent/skog/backlight.c')
-rw-r--r-- | keyboards/percent/skog/backlight.c | 211 |
1 files changed, 0 insertions, 211 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 | |||
33 | extern 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)) | ||
47 | void 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 | ||
78 | void 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 | |||
92 | bool is_init = false; | ||
93 | void 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 | |||
108 | void 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 | ||
123 | ISR(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() | ||
136 | void 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() | ||
145 | void timer1PWMBDisable(void) { | ||
146 | TCCR1A &= ~_BV(COM1B1); | ||
147 | TCCR1A &= ~_BV(COM1B0); | ||
148 | } | ||
149 | |||
150 | void enableBacklight(void) { | ||
151 | DDRD |= BACKLIGHT_PORT; // set digital pin 4 as output | ||
152 | PORTD |= BACKLIGHT_PORT; // set digital pin 4 to high | ||
153 | } | ||
154 | |||
155 | void disableBacklight(void) { | ||
156 | // DDRD &= ~BACKLIGHT_PORT; // set digital pin 4 as input | ||
157 | PORTD &= ~BACKLIGHT_PORT; // set digital pin 4 to low | ||
158 | } | ||
159 | |||
160 | void startPWM(void) { | ||
161 | timer1Init(); | ||
162 | timer1PWMBEnable(); | ||
163 | enableBacklight(); | ||
164 | } | ||
165 | |||
166 | void stopPWM(void) { | ||
167 | timer1UnInit(); | ||
168 | disableBacklight(); | ||
169 | timer1PWMBDisable(); | ||
170 | } | ||
171 | |||
172 | void 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 | |||
191 | void 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 | ||
200 | void b_led_task(void) { | ||
201 | // do nothing for now | ||
202 | } | ||
203 | |||
204 | void 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 | ||