Problem with spindle synchronous encoder

[auxp]

I don't know if this is correct.
// Spindle encoder pins.
#if SPINDLE_ENCODER_ENABLE
#define RPM_COUNTER_N 2
#define RPM_TIMER_N 3
#define SPINDLE_INDEX_PORT GPIOB
#define SPINDLE_INDEX_PIN 3
#define SPINDLE_PULSE_PORT GPIOA
#define SPINDLE_PULSE_PIN 15
#endif

The sender has set PULSE 100, encoder A is connected to PULSE, and Z is connected to INDEX. Of course, I also swapped them, and there was no change in the iOS speed after rotation.
I also used an oscilloscope to check the waveforms of A and Z, and everything is normal

[terjeio]

Which build ($I output)? A few days ago I fixed a regression in the spindle code that messed up spindle sync.