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#include "velocikey.h"
#include "timer.h"
#include "eeconfig.h"
#include "eeprom.h"
#ifndef MIN
# define MIN(a, b) (((a) < (b)) ? (a) : (b))
#endif
#ifndef MAX
# define MAX(a, b) (((a) > (b)) ? (a) : (b))
#endif
#define TYPING_SPEED_MAX_VALUE 200
uint8_t typing_speed = 0;
bool velocikey_enabled(void) {
return eeprom_read_byte(EECONFIG_VELOCIKEY) == 1;
}
void velocikey_toggle(void) {
if (velocikey_enabled())
eeprom_update_byte(EECONFIG_VELOCIKEY, 0);
else
eeprom_update_byte(EECONFIG_VELOCIKEY, 1);
}
void velocikey_accelerate(void) {
if (typing_speed < TYPING_SPEED_MAX_VALUE) typing_speed += (TYPING_SPEED_MAX_VALUE / 100);
}
void velocikey_decelerate(void) {
static uint16_t decay_timer = 0;
if (timer_elapsed(decay_timer) > 500 || decay_timer == 0) {
if (typing_speed > 0) typing_speed -= 1;
// Decay a little faster at half of max speed
if (typing_speed > TYPING_SPEED_MAX_VALUE / 2) typing_speed -= 1;
// Decay even faster at 3/4 of max speed
if (typing_speed > TYPING_SPEED_MAX_VALUE / 4 * 3) typing_speed -= 2;
decay_timer = timer_read();
}
}
uint8_t velocikey_match_speed(uint8_t minValue, uint8_t maxValue) {
return MAX(minValue, maxValue - (maxValue - minValue) * ((float)typing_speed / TYPING_SPEED_MAX_VALUE));
}
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