95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
#include "backlight.h"
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#include "main.h"
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#include "regs.h"
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// LCD backlight curve based on brightness measurements for specific value of PWM duty cycle.
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// Using this, I've established a custom command curve.
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#define LCD_BCKL_STEPS 10
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//static const uint16_t lcd_bckl_steps[LCD_BCKL_STEPS] = {20, 60, 96, 134, 166, 192, 210, 256, 358, 460};
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static const uint16_t lcd_bckl_steps[LCD_BCKL_STEPS] = {10, 20, 40, 60, 80, 110, 150, 200, 256, 440};
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#define KBD_BCKL_STEPS 4
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static const uint16_t kbd_bckl_steps[KBD_BCKL_STEPS] = {0, 40, 110, 260};
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inline void lcd_backlight_update_from_reg(void) {
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uint16_t val = 0;
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val = lcd_bckl_steps[reg_get_value(REG_ID_BKL) % LCD_BCKL_STEPS];
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__HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, val);
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}
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inline void lcd_backlight_on(void) {
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lcd_backlight_update_from_reg();
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}
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inline void lcd_backlight_off(void) {
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__HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, 0x0000);
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}
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inline void lcd_backlight_update(uint8_t step) {
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uint16_t val = 0;
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const uint8_t index = step % LCD_BCKL_STEPS;
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val = lcd_bckl_steps[index];
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__HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, val);
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reg_set_value(REG_ID_BKL, index);
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}
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inline void lcd_backlight_update_up(void) {
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uint16_t val = 0;
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uint8_t index = reg_get_value(REG_ID_BKL) % LCD_BCKL_STEPS;
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index = index < (LCD_BCKL_STEPS-1) ? index + 1 : (LCD_BCKL_STEPS-1);
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val = lcd_bckl_steps[index];
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__HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, val);
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reg_set_value(REG_ID_BKL, index);
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}
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inline void lcd_backlight_update_down(void) {
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uint16_t val = 0;
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uint8_t index = reg_get_value(REG_ID_BKL) % LCD_BCKL_STEPS;
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index = index > 0 ? index - 1 : 0;
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val = lcd_bckl_steps[index];
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__HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, val);
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reg_set_value(REG_ID_BKL, index);
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}
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inline void kbd_backlight_on(void) {
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uint16_t val = 0;
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val = kbd_bckl_steps[reg_get_value(REG_ID_BK2) % KBD_BCKL_STEPS];
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__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, val);
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}
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inline void kbd_backlight_off(void) {
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__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, 0x0000);
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}
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inline void kbd_backlight_update(uint8_t step) {
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uint16_t val = 0;
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const uint8_t index = step % KBD_BCKL_STEPS;
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val = kbd_bckl_steps[index];
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__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, val);
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reg_set_value(REG_ID_BK2, index);
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}
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inline void kbd_backlight_update_loop(void) {
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uint16_t val = 0;
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uint8_t index = reg_get_value(REG_ID_BK2) % KBD_BCKL_STEPS;
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index = index < (KBD_BCKL_STEPS-1) ? index + 1 : 0;
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val = kbd_bckl_steps[index];
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__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, val);
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reg_set_value(REG_ID_BK2, index);
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}
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