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OneOfEleven
2023-11-10 13:23:32 +00:00
parent 335a9f1db9
commit ef5270e115
14 changed files with 94 additions and 62 deletions
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56
driver/backlight.c
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@ -14,15 +14,32 @@
* limitations under the License.
*/
#include "backlight.h"
#include "bsp/dp32g030/gpio.h"
#include "driver/backlight.h"
#include "bsp/dp32g030/pwmplus.h"
#include "bsp/dp32g030/portcon.h"
#include "driver/gpio.h"
#include "settings.h"
// this is decremented once every 500ms
uint16_t g_backlight_tick_500ms = 0;
uint16_t g_backlight_tick_10ms;
bool g_backlight_on;
uint16_t backlight_ticks(void)
void BACKLIGHT_init(void)
{
// 48MHz / 94 / 1024 ~ 500Hz
const uint32_t PWM_FREQUENCY_HZ = 1000;
PWM_PLUS0_CLKSRC |= ((48000000 / 1024 / PWM_FREQUENCY_HZ) << 16);
PWM_PLUS0_PERIOD = 1023;
PORTCON_PORTB_SEL0 &= ~(PORTCON_PORTB_SEL0_B6_MASK);
PORTCON_PORTB_SEL0 |= PORTCON_PORTB_SEL0_B6_BITS_PWMP0_CH0;
PWM_PLUS0_GEN = PWMPLUS_GEN_CH0_OE_BITS_ENABLE | PWMPLUS_GEN_CH0_OUTINV_BITS_ENABLE;
PWM_PLUS0_CFG = PWMPLUS_CFG_CNT_REP_BITS_ENABLE | PWMPLUS_CFG_COUNTER_EN_BITS_ENABLE;
}
uint16_t BACKLIGHT_ticks(void)
{
uint16_t ticks = 0;
switch (g_eeprom.config.setting.backlight_time)
@ -34,21 +51,38 @@ uint16_t backlight_ticks(void)
case 5: ticks = 60 * 2; break; // 2 min
case 6: ticks = 60 * 4; break; // 4 min
}
return ticks * 2;
return ticks * 100;
}
void backlight_turn_on(const uint16_t min_ticks)
void BACKLIGHT_set_brightness(unsigned int brightness)
{
brightness = (brightness > BACKLIGHT_MAX_BRIGHTNESS) ? BACKLIGHT_MAX_BRIGHTNESS : brightness;
// non-linear
PWM_PLUS0_CH0_COMP = (1023ul * brightness * brightness) / (BACKLIGHT_MAX_BRIGHTNESS * BACKLIGHT_MAX_BRIGHTNESS);
//PWM_PLUS0_SWLOAD = 1;
g_backlight_on = (brightness > 0) ? true : false;
}
void BACKLIGHT_turn_on(const uint16_t min_ticks)
{
if (min_ticks > 0)
{
if (g_backlight_tick_500ms < min_ticks)
g_backlight_tick_500ms = min_ticks;
GPIO_SetBit(&GPIOB->DATA, GPIOB_PIN_BACKLIGHT);
if (g_backlight_tick_10ms < min_ticks)
g_backlight_tick_10ms = min_ticks;
BACKLIGHT_set_brightness(BACKLIGHT_MAX_BRIGHTNESS);
}
else
if (g_eeprom.config.setting.backlight_time > 0)
{
GPIO_SetBit(&GPIOB->DATA, GPIOB_PIN_BACKLIGHT);
g_backlight_tick_500ms = backlight_ticks();
BACKLIGHT_set_brightness(BACKLIGHT_MAX_BRIGHTNESS);
g_backlight_tick_10ms = BACKLIGHT_ticks();
}
}
void BACKLIGHT_turn_off(void)
{
g_backlight_tick_10ms = 0;
BACKLIGHT_set_brightness(0);
}

13
driver/backlight.h
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@ -18,11 +18,18 @@
#define DRIVER_BACKLIGHT_H
#include <stdint.h>
#include <stdbool.h>
extern uint16_t g_backlight_tick_500ms;
#define BACKLIGHT_MAX_BRIGHTNESS 100
uint16_t backlight_ticks(void);
void backlight_turn_on(const uint16_t min_ticks);
extern uint16_t g_backlight_tick_10ms;
extern bool g_backlight_on;
void BACKLIGHT_init(void);
uint16_t BACKLIGHT_ticks(void);
void BACKLIGHT_set_brightness(unsigned int brightness);
void BACKLIGHT_turn_on(const uint16_t min_ticks);
void BACKLIGHT_turn_off(void);
#endif