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https://github.com/OneOfEleven/uv-k5-firmware-custom.git
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96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
/* Copyright 2023 Dual Tachyon
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* https://github.com/DualTachyon
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "backlight.h"
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#include "bsp/dp32g030/gpio.h"
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#include "bsp/dp32g030/pwmplus.h"
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#include "bsp/dp32g030/portcon.h"
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#include "driver/gpio.h"
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#include "settings.h"
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uint16_t g_backlight_tick_10ms;
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void BACKLIGHT_init(void)
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{
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// 48MHz / 94 / 1024 ~ 500Hz
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const uint32_t PWM_FREQUENCY_HZ = 1000;
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PWM_PLUS0_CLKSRC |= (CPU_CLOCK_HZ / 1024 / PWM_FREQUENCY_HZ) << 16;
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PWM_PLUS0_PERIOD = 1023;
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PORTCON_PORTB_SEL0 &= ~(PORTCON_PORTB_SEL0_B6_MASK);
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PORTCON_PORTB_SEL0 |= PORTCON_PORTB_SEL0_B6_BITS_PWMP0_CH0;
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PWM_PLUS0_GEN = PWMPLUS_GEN_CH0_OE_BITS_ENABLE | PWMPLUS_GEN_CH0_OUTINV_BITS_ENABLE;
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PWM_PLUS0_CFG = PWMPLUS_CFG_CNT_REP_BITS_ENABLE | PWMPLUS_CFG_COUNTER_EN_BITS_ENABLE;
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}
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uint16_t BACKLIGHT_ticks(void)
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{
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uint16_t ticks = 0;
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switch (g_eeprom.config.setting.backlight_time)
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{
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case 1: ticks = 5; break; // 5 sec
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case 2: ticks = 10; break; // 10 sec
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case 3: ticks = 20; break; // 20 sec
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case 4: ticks = 60; break; // 1 min
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case 5: ticks = 120; break; // 2 min
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case 6: ticks = 240; break; // 4 min
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}
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return ticks * 100;
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}
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bool BACKLIGHT_is_on(void)
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{
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return (PWM_PLUS0_CH0_COMP > 0) ? true : false;
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}
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void BACKLIGHT_set_brightness(unsigned int brightness)
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{
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if (brightness > BACKLIGHT_MAX_BRIGHTNESS)
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brightness = BACKLIGHT_MAX_BRIGHTNESS;
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// 0 ~ 1023 logify it though
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PWM_PLUS0_CH0_COMP = (1023ul * brightness * brightness * brightness) / (BACKLIGHT_MAX_BRIGHTNESS * BACKLIGHT_MAX_BRIGHTNESS * BACKLIGHT_MAX_BRIGHTNESS);
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//PWM_PLUS0_SWLOAD = 1;
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}
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void BACKLIGHT_turn_on(const unsigned int min_secs)
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{
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const uint16_t min_ticks = 100u * min_secs;
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if (min_ticks > 0)
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{
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if (g_backlight_tick_10ms < min_ticks)
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g_backlight_tick_10ms = min_ticks;
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BACKLIGHT_set_brightness(BACKLIGHT_MAX_BRIGHTNESS);
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}
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else
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if (g_eeprom.config.setting.backlight_time > 0)
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{
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g_backlight_tick_10ms = BACKLIGHT_ticks();
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BACKLIGHT_set_brightness(BACKLIGHT_MAX_BRIGHTNESS);
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}
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}
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void BACKLIGHT_turn_off(void)
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{
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if (g_backlight_tick_10ms > BACKLIGHT_MAX_BRIGHTNESS)
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g_backlight_tick_10ms = BACKLIGHT_MAX_BRIGHTNESS;
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// g_backlight_tick_10ms = 0;
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BACKLIGHT_set_brightness(g_backlight_tick_10ms);
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}
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