Ictd()

Ictd()

Ictd() loads the preset value, then decrements the current value at each input rising edge.

bool Ictd(uint8_t counter_id, bool CD, bool LOAD, int32_t PV)

Commands

Command	Arguments	Return Value	Operation
`Ictd(counter_id, CD, LOAD, PV)`	`uint8_t counter_id` — Counter number. Supports `0` ~ `255`, the `uint8_t` range `bool CD` `bool LOAD` `int32_t PV` — Preset value	`bool`	Loads the preset value, then decrements the current value at each input rising edge.

Example

This example uses the P0 and P1 inputs and the P32 output on MPINO-8A4R(T)-S.

const uint8_t COUNTER_ID = 1;
const int32_t START_QUANTITY = 50;
 
void setup() {
  Serial.begin(115200);
}
 
void loop() {
  const bool shipped = digitalRead(0) == HIGH;
  const bool loadQuantity = digitalRead(1) == HIGH;
  const bool empty = Ictd(COUNTER_ID, shipped, loadQuantity, START_QUANTITY);  // Load the preset, then decrement the current value on each rising input edge.
  digitalWrite(32, empty ? HIGH : LOW);
}

Precautions

The previous fixed 0~31 restriction has been removed. However, the argument type is uint8_t, so the maximum ID is 255.
If insufficient memory prevents allocation of counter state, counter commands return false or 0.
Once created, counter state is retained while the program runs.

Built-in Commands in the Same Category

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Table of Contents

Ictd()

Commands

Example

Precautions

Built-in Commands in the Same Category