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TCNTSETUP()

TCNTSETUP() configures timer external clock input and 32-bit extension mode.

void TCNTSETUP(uint8_t timerNumber, bool on32bit = false)

Commands

Command	Arguments	Return Value	Operation
`TCNTSETUP(timerNumber, on32bit)`	`uint8_t timerNumber` — External clock timer number supported by the product `bool on32bit = false` — `false`: use only the hardware 16-bit counter. `true`: accumulate the upper 16-bit overflow count using overflow interrupts	`void`	Configures timer external clock input and 32-bit extension mode.

Example

const uint8_t COUNTER_TIMER = 1;
 
void setup() {
  Serial.begin(115200);
  TCNTSETUP(COUNTER_TIMER, true);  // Configure the timer's external clock input and 32-bit extension mode.
}
 
void loop() {
  static uint16_t previousOverflow = 0;
  const uint16_t overflowCount = TCNTOUT(COUNTER_TIMER);  // Return the accumulated upper overflow value in 32-bit extension mode.
  if (overflowCount != previousOverflow) {
    previousOverflow = overflowCount;
    Serial.println(overflowCount);
  }
}

Precautions

Timer external clock mode is supported only by MPINO-8A8R and MPINO-16A8R8T.
Even on supported products, verify TCNT terminals and timer numbers using product documentation.
Do not interpret TCNTOUT() as a simple function for reading the current 16-bit counter.
In interrupt ISRs on other products, perform no work other than incrementing the count.

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ILOGICS Product Documentation

Table of Contents

TCNTSETUP()

Commands

Example

Precautions