Pushbuttons                                            
──────────────────────
     3.3 V                 
                     Expected Voltage at P21   
       │                
      ┤Pushbutton       Button Pushed           Voltage stable    Button Released     Voltage stable
       │                                                                              
P21 ──┫                 
       │                                                              
        10 kΩ            │───  Contact Bounce ────│                |─Contact Bounce─|
       │                     10s of milliseconds
                        
      GND        ina[pin] 00110001111101000111111010101111111111  1111101100000101111110100000
───────────────────────


PUB Time(pin) : delta | time1, time2

    repeat until ina[pin] == 1
    time1 := cnt
    repeat until ina[pin] == 0
    time2 := cnt
    delta := time2 - time1


How can Time(pin) work correctly?�