USB-I/O Interface Adapter GPIO-24. Programmer's Reference Manual.
 6.2.2. GPIO_IN_EV_LEV_0 (0x01) – Sending events when pin has logical "0" on its
input |  | 6.2.4. GPIO_IN_EV_RISING (0x03) – Sending events when input value changes from
logical "0" to "1"  |
Events are sent when pin has logical "1" on its input.
If Byte 6: REPEAT is non-zero, GPIO-24 adapter sends events every REPEAT * 100 ms while the pin has logical "1" on its input .
If Byte 5: DEBOUNCE is non-zero, the event is sent only if logical "1" is stable for a predefined period of time. The time period is defined in ms.
