7 # define MIN(a, b) (((a) < (b)) ? (a) : (b))
10 # define MAX(a, b) (((a) > (b)) ? (a) : (b))
13 #define TYPING_SPEED_MAX_VALUE 200
14 uint8_t typing_speed
= 0;
16 bool velocikey_enabled(void) { return eeprom_read_byte(EECONFIG_VELOCIKEY
) == 1; }
18 void velocikey_toggle(void) {
19 if (velocikey_enabled())
20 eeprom_update_byte(EECONFIG_VELOCIKEY
, 0);
22 eeprom_update_byte(EECONFIG_VELOCIKEY
, 1);
25 void velocikey_accelerate(void) {
26 if (typing_speed
< TYPING_SPEED_MAX_VALUE
) typing_speed
+= (TYPING_SPEED_MAX_VALUE
/ 100);
29 void velocikey_decelerate(void) {
30 static uint16_t decay_timer
= 0;
32 if (timer_elapsed(decay_timer
) > 500 || decay_timer
== 0) {
33 if (typing_speed
> 0) typing_speed
-= 1;
34 // Decay a little faster at half of max speed
35 if (typing_speed
> TYPING_SPEED_MAX_VALUE
/ 2) typing_speed
-= 1;
36 // Decay even faster at 3/4 of max speed
37 if (typing_speed
> TYPING_SPEED_MAX_VALUE
/ 4 * 3) typing_speed
-= 2;
38 decay_timer
= timer_read();
42 uint8_t velocikey_match_speed(uint8_t minValue
, uint8_t maxValue
) { return MAX(minValue
, maxValue
- (maxValue
- minValue
) * ((float)typing_speed
/ TYPING_SPEED_MAX_VALUE
)); }