Function

Information whether the Delay timer has expired

Purpose

Time measurement or delay generation

Syntax

bit isDelay()

Parameters

  –

Return value

•     1: Still in progress

•     0: Elapsed

Output values

  –

Preconditions

startDelay or startLongDelay should be used before.

Remarks

•     The (Long)Delay timer measures the specified time. The result is available via the isDelay function.

•     Tip: the clrwdt instruction should be used to avoid unintentional watchdog reset during the delay.

•     See Example E05–DELAYS.

Side effects

  –

See also

startDelay, startLongDelay

Example 1

     // LED on for 1 s

_LED = 1;

startDelay(100);      // Start 1 sec delay counting on OS background

while (isDelay())     // Wait until the delay is over

{

    clrwdt();         // Any useful operation on OS foreground can be

      ...             // performed during waiting

}

_LED = 0;             // Continue here after 1 sec

Example 2

     // LED on for 10 s

_LED = 1;

startLongDelay(1000); // Start 10 sec delay counting on OS background

while (isDelay())     // Wait until the delay is over

{

    clrwdt();          // Any useful operation on OS foreground can be

      ...             // performed during waiting

}

_LED = 0;             // Continue here after 10 sec