stopClock

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Description

Selectively disables the interrupt used for time-keeping (1ms timer4 update). Can be re-enabled using startClock(). In contrast to command noInterrupts(), other interrupts are not affected (e.g. interrupt-driven communication).

The following functions require an enabled 1ms interrupt: delay(), delayMicroseconds(), millis(), micros(), flagMilli(), clearFlagMilli(), setTimeout(), checkTimeout()

Inclusion

• defined in timer4.h
• auto-loaded in main_general.h
• in config.h set #define USE_TIM4_UPD_ISR to enable time-keeping via 1ms interrupt.

Syntax

stopClock()

Parameters

• input:

  • none

• output:

  • none

Returns

• Nothing

Example Code

The below code disables the time-keeping interrupt, performs some time-critical code, and re-enable the interrupt afterwards.

#include "main_general.h"   // board-independent main

void setup() {}

void loop()
{
  stopClock();
  // critical, time-sensitive code here
  startClock();
  // other code here
}

Relevant Tutorial

• tbd

See also

• sw_delay()
• sw_delayMicroseconds()
• sw_delayNOP()
• delay()
• delayMicroseconds()
• millis()
• micros()
• flagMilli()
• clearFlagMilli()
• setTimeout()
• checkTimeout()
• startStopwatch()
• getStopwatch()
• startClock()
• attachInterruptMillis()
• detachInterruptMillis()