summaryrefslogtreecommitdiffstats
path: root/keyboards/handwired/co60/rev6/led.c
diff options
context:
space:
mode:
Diffstat (limited to 'keyboards/handwired/co60/rev6/led.c')
-rw-r--r--keyboards/handwired/co60/rev6/led.c240
1 files changed, 0 insertions, 240 deletions
diff --git a/keyboards/handwired/co60/rev6/led.c b/keyboards/handwired/co60/rev6/led.c
deleted file mode 100644
index fe28ce2e8f..0000000000
--- a/keyboards/handwired/co60/rev6/led.c
+++ /dev/null
@@ -1,240 +0,0 @@
-/*
-Copyright 2012 Jun Wako <wakojun@gmail.com>
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "hal.h"
-#include "led_custom.h"
-#include "rev6.h"
-#include "printf.h"
-
-static void breathing_callback(PWMDriver *pwmp);
-
-static PWMConfig pwmCFG = {
- 0xFFFF, /* PWM clock frequency */
- 256, /* PWM period (in ticks) 1S (1/10kHz=0.1mS 0.1ms*10000 ticks=1S) */
- NULL, /* No Callback */
- {
- {PWM_OUTPUT_DISABLED, NULL},
- {PWM_OUTPUT_DISABLED, NULL},
- {PWM_OUTPUT_ACTIVE_HIGH, NULL}, /* Enable Channel 3 */
- {PWM_OUTPUT_DISABLED, NULL}
- },
- 0, /* HW dependent part.*/
- 0
-};
-
-static PWMConfig pwmCFG_breathing = {
- 0xFFFF, /* 10kHz PWM clock frequency */
- 256, /* PWM period (in ticks) 1S (1/10kHz=0.1mS 0.1ms*10000 ticks=1S) */
- breathing_callback, /* Breathing Callback */
- {
- {PWM_OUTPUT_DISABLED, NULL},
- {PWM_OUTPUT_DISABLED, NULL},
- {PWM_OUTPUT_ACTIVE_HIGH, NULL}, /* Enable Channel 3 */
- {PWM_OUTPUT_DISABLED, NULL}
- },
- 0, /* HW dependent part.*/
- 0
-};
-
-// See http://jared.geek.nz/2013/feb/linear-led-pwm
-static uint16_t cie_lightness(uint16_t v) {
- if (v <= 5243) // if below 8% of max
- return v / 9; // same as dividing by 900%
- else {
- uint32_t y = (((uint32_t)v + 10486) << 8) / (10486 + 0xFFFFUL); // add 16% of max and compare
- // to get a useful result with integer division, we shift left in the expression above
- // and revert what we've done again after squaring.
- y = y * y * y >> 8;
- if (y > 0xFFFFUL) // prevent overflow
- return 0xFFFFU;
- else
- return (uint16_t)y;
- }
-}
-
-void backlight_init_ports(void) {
- palSetPadMode(GPIOB, 8, PAL_MODE_ALTERNATE(2));
- pwmStart(&PWMD4, &pwmCFG);
- if (kb_backlight_config.enable) {
- if (kb_backlight_config.breathing) {
- breathing_enable();
- } else {
- backlight_set(kb_backlight_config.level);
- }
- } else {
- backlight_set(0);
- }
-}
-
-void backlight_set(uint8_t level) {
- uint32_t duty = (uint32_t)(cie_lightness(0xFFFF * (uint32_t)level / BACKLIGHT_LEVELS));
- if (level == 0) {
- // Turn backlight off
- // Disable channel 3 on PWM4
- pwmDisableChannel(&PWMD4, 2);
- } else {
- // Turn backlight on
- if (!is_breathing()) {
- // Enable channel 3 on PWM4
- pwmEnableChannel(&PWMD4, 2, PWM_FRACTION_TO_WIDTH(&PWMD4, 0xFFFF, duty));
- }
- }
-}
-
-uint8_t backlight_tick = 0;
-
-void backlight_task(void) {
-}
-
-#define BREATHING_NO_HALT 0
-#define BREATHING_HALT_OFF 1
-#define BREATHING_HALT_ON 2
-#define BREATHING_STEPS 128
-
-static uint8_t breathing_period = BREATHING_PERIOD;
-static uint8_t breathing_halt = BREATHING_NO_HALT;
-static uint16_t breathing_counter = 0;
-
-bool is_breathing(void) {
- return PWMD4.config == &pwmCFG_breathing;
-}
-
-#define breathing_min() do {breathing_counter = 0;} while (0)
-#define breathing_max() do {breathing_counter = breathing_period * 256 / 2;} while (0)
-
-
-void breathing_interrupt_enable(void){
- pwmStop(&PWMD4);
- pwmStart(&PWMD4, &pwmCFG_breathing);
- chSysLockFromISR();
- pwmEnablePeriodicNotification(&PWMD4);
- pwmEnableChannelI(
- &PWMD4,
- 2,
- PWM_FRACTION_TO_WIDTH(
- &PWMD4,
- 0xFFFF,
- 0xFFFF
- )
- );
- chSysUnlockFromISR();
-}
-
-void breathing_interrupt_disable(void){
- pwmStop(&PWMD4);
- pwmStart(&PWMD4, &pwmCFG);
-}
-
-void breathing_enable(void)
-{
- breathing_counter = 0;
- breathing_halt = BREATHING_NO_HALT;
- breathing_interrupt_enable();
-}
-
-void breathing_pulse(void)
-{
- if (kb_backlight_config.level == 0)
- breathing_min();
- else
- breathing_max();
- breathing_halt = BREATHING_HALT_ON;
- breathing_interrupt_enable();
-}
-
-void breathing_disable(void)
-{
- breathing_interrupt_disable();
- // Restore backlight level
- backlight_set(kb_backlight_config.level);
-}
-
-void breathing_self_disable(void)
-{
- if (kb_backlight_config.level == 0)
- breathing_halt = BREATHING_HALT_OFF;
- else
- breathing_halt = BREATHING_HALT_ON;
-}
-
-void breathing_toggle(void) {
- if (is_breathing()){
- breathing_disable();
- } else {
- breathing_enable();
- }
-}
-
-void breathing_period_set(uint8_t value)
-{
- if (!value)
- value = 1;
- breathing_period = value;
-}
-
-void breathing_period_default(void) {
- breathing_period_set(BREATHING_PERIOD);
-}
-
-void breathing_period_inc(void)
-{
- breathing_period_set(breathing_period+1);
-}
-
-void breathing_period_dec(void)
-{
- breathing_period_set(breathing_period-1);
-}
-
-/* To generate breathing curve in python:
- * from math import sin, pi; [int(sin(x/128.0*pi)**4*255) for x in range(128)]
- */
-static const uint8_t breathing_table[BREATHING_STEPS] = {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};
-
-// Use this before the cie_lightness function.
-static inline uint16_t scale_backlight(uint16_t v) {
- return v / BACKLIGHT_LEVELS * kb_backlight_config.level;
-}
-
-static void breathing_callback(PWMDriver *pwmp)
-{
- (void)pwmp;
- uint16_t interval = (uint16_t) breathing_period * 256 / BREATHING_STEPS;
- // resetting after one period to prevent ugly reset at overflow.
- breathing_counter = (breathing_counter + 1) % (breathing_period * 256);
- uint8_t index = breathing_counter / interval % BREATHING_STEPS;
-
- if (((breathing_halt == BREATHING_HALT_ON) && (index == BREATHING_STEPS / 2)) ||
- ((breathing_halt == BREATHING_HALT_OFF) && (index == BREATHING_STEPS - 1)))
- {
- breathing_interrupt_disable();
- }
-
- uint32_t duty = cie_lightness(scale_backlight(breathing_table[index] * 256));
-
- chSysLockFromISR();
- pwmEnableChannelI(
- &PWMD4,
- 2,
- PWM_FRACTION_TO_WIDTH(
- &PWMD4,
- 0xFFFF,
- duty
- )
- );
- chSysUnlockFromISR();
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 03:42:13 +0000