segatools/idacio/shifter.c

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#include <stdbool.h>
#include <stdint.h>
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#include "idacio/shifter.h"
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static bool idac_shifter_shifting;
static uint8_t idac_shifter_gear;
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void idac_shifter_set(uint8_t gear)
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{
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idac_shifter_gear = gear;
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}
void idac_shifter_update(bool shift_dn, bool shift_up)
{
if (!idac_shifter_shifting) {
if (shift_dn && idac_shifter_gear > 0) {
idac_shifter_gear--;
}
if (shift_up && idac_shifter_gear < 6) {
idac_shifter_gear++;
}
}
idac_shifter_shifting = shift_dn || shift_up;
}
uint8_t idac_shifter_current_gear(void)
{
return idac_shifter_gear;
}