FILO()

FILO() outputs the last stored 16-bit data first.

bool FILO(uint8_t filo_id, bool IN, bool OUT, uint16_t input, uint16_t &output, uint8_t size, bool reset = false)

Commands

Command	Arguments	Return Value	Operation
`FILO(filo_id, IN, OUT, input, output, size, reset)`	`uint8_t filo_id` `bool IN` — Store input on the rising edge `bool OUT` — Output on the rising edge `uint16_t input` — Word to store `uint16_t &output` — Reference variable receiving the output `uint8_t size` — Buffer size `bool reset = false` — Reset the buffer	`bool`	Outputs the last stored 16-bit data first.

Example

Send a in Serial Monitor to store the next number, p to retrieve the most recently stored number, or c to clear the buffer. Send one character at a time to observe the behavior.

uint16_t nextNumber = 0;
uint16_t lastNumber = 0;
 
void setup() {
  Serial.begin(115200);
}
 
void loop() {
  if (!Serial.available()) return;
  const char action = Serial.read();
  const bool store = action == 'a';
  const bool retrieve = action == 'p';
  const bool clearBuffer = action == 'c';
  if (store) ++nextNumber;
 
  const bool ok = FILO(0, store, retrieve, nextNumber, lastNumber, 16, clearBuffer);  // Store a number; on a pop signal, retrieve the last stored number.
  FILO(0, false, false, nextNumber, lastNumber, 16, false);  // Return both inputs to LOW so the next character creates a new rising edge.
  if (retrieve && ok) Serial.println(lastNumber);
  if (retrieve && !ok) Serial.println(F("Buffer empty"));
}

Precautions

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.

Built-in Commands in the Same Category

FIFO() View detailed description

← Built-in Command List

ILOGICS Product Documentation

Table of Contents

FILO()

Commands

Example

Precautions

Built-in Commands in the Same Category