Detailed Description

The WatchdogTimer

WatchdogTimer is an operator to detect Reset input inactivity. When Reset is inactive for more than set by Delay input, Timeout output will go high until Reset becomes active again. On application startup, WatchdogTimer remains in a timed out state until it receives the first Reset value change at its input.

Arguments

Example

Below is an example plot with Reset input becoming inactive and Timeout going high in response to the inactivity.

Actual Processing Code of the WatchdogTimer

unsigned int WatchdogTimer<T>::Process()
{
  m_output = Timer.TimedOut();
  if (LastResetValue != m_input)
  {
    Timer.Reset(static_cast<double>(*Delay));
    Timer.Start();
    LastResetValue = static_cast<double>(m_input);
  }
  return STATUS_OK;
}