* Add: RGB underglow support using SPI to SteamVan and CO60 * Update: Switch to QMK's baclight implementation for CO60 and SteamVan * Fix: Remove now unnecessary backlighting code from keyboard filespull/7881/head
@ -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(); | |||||
} |
@ -1,22 +0,0 @@ | |||||
/* | |||||
* Copyright 2019 John M Daly <jmdaly@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/>. | |||||
*/ | |||||
#pragma once | |||||
void backlight_task(void); | |||||
void breathing_interrupt_disable(void); | |||||
void breathing_interrupt_enable(void); |
@ -1,242 +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 "rev7.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(); | |||||
} |
@ -1,22 +0,0 @@ | |||||
/* | |||||
Copyright 2019 John M Daly <jmdaly@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/>. | |||||
*/ | |||||
#pragma once | |||||
void backlight_task(void); | |||||
void breathing_interrupt_disable(void); | |||||
void breathing_interrupt_enable(void); |
@ -1,242 +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 "rev1.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(); | |||||
} |
@ -1,22 +0,0 @@ | |||||
/* | |||||
Copyright 2019 John M Daly <jmdaly@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/>. | |||||
*/ | |||||
#pragma once | |||||
void backlight_task(void); | |||||
void breathing_interrupt_disable(void); | |||||
void breathing_interrupt_enable(void); |