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ItimerStart()

ItimerStart() starts the configured callback timer.

bool ItimerStart()
bool ItimerStart(uint8_t timerNumber)

Commands

Command	Arguments	Return Value	Operation
`ItimerStart()`	None	`bool`	Starts the configured callback timer.

Example

volatile bool tick = false;
 
void onTimer() {
  tick = true;
}
 
void setup() {
  pinMode(13, OUTPUT);
  ItimerSet(1000, onTimer);  // Set the interval and callback function, or select the hardware timer to use.
  ItimerStart();  // Start the configured callback timer.
}
 
void loop() {
  if (tick) {
    tick = false;
    digitalWrite(13, !digitalRead(13));
  }
}

Precautions

Timer interrupt callbacks run inside an ISR. For safety, change only flags in the callback and perform actual control processing in loop().
Do not use slow or interrupt-dependent code such as delay(), Serial, I2C or SPI in callbacks.
Normally, call ImodbusRTU() repeatedly in loop(). Call it from a timer interrupt with a sufficient interval only when long delay() calls or debug output slow down loop().
Do not use the default ItimerSet() together with tone() using Timer2 or analogWrite() on Timer2 PWM pins.
Explicitly using Timer1, Timer3, Timer4 or Timer5 may conflict with PWM, analog output or high-speed counter functions using that timer.
Configure only one Itimer callback per hardware timer.
Defining an ISR for the same timer directly in the sketch may conflict with Itimer operation.
ItimerStopAll() stops only hardware interrupt timers. It does not reset PLC-style timer states such as Iton, Itof or Itmr.

Built-in Commands in the Same Category

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ILOGICS Product Documentation

Table of Contents

ItimerStart()

Commands

Example

Precautions

Built-in Commands in the Same Category