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