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Counters and FIFO/FILO

Command	Description
`Ictu(id, CU, RESET, PV)`	Counts `CU` rising edges and turns ON at `PV`.
`Ictd(id, CD, LOAD, PV)`	Decrements on each `CD` rising edge after `LOAD`.
`Ictud(id, CU, CD, RESET, LOAD, PV)`	Handles increment and decrement together.
`IgetCount(id)`, `IsetCount(id, value)`	Reads or changes the current value.
`IctudDownState(id)`	Returns the lower-limit completion state of the Up/Down counter.
`FIFO(id, IN, OUT, input, output, size, reset)`	Retrieves the first stored 16-bit data first.
`FILO(id, IN, OUT, input, output, size, reset)`	Retrieves the last stored 16-bit data first.

void loop() {
  bool countDone = Ictu(0, digitalRead(0), false, 10);
  int32_t countValue = IgetCount(0);
}

Command Prototypes

Return Type	Command Prototype
`bool`	`Ictu(uint8_t counter_id, bool CU, bool RESET, int32_t PV)`
`bool`	`Ictd(uint8_t counter_id, bool CD, bool LOAD, int32_t PV)`
`bool`	`Ictud(uint8_t counter_id, bool CU, bool CD, bool RESET, bool LOAD, int32_t PV)`
`int32_t`	`IgetCount(uint8_t counter_id)`
`void`	`IsetCount(uint8_t counter_id, int32_t value)`
`bool`	`IctudDownState(uint8_t counter_id)`
`bool`	`FIFO(uint8_t fifo_id, bool IN, bool OUT, uint16_t input, uint16_t &output, uint8_t size, bool reset = false)`
`bool`	`FILO(uint8_t filo_id, bool IN, bool OUT, uint16_t input, uint16_t &output, uint8_t size, bool reset = false)`

IN, OUT, CU and CD act on rising edges. Use a unique id for each counter or buffer, and keep size to the required minimum.