// Poll a single device on the board
// Polling typically is reading the temperature(s) from the device; TEC board
// also queries current and power.
internal void PollNextDeviceBurst()
{
BoardDevice active = null;
// identify the device to next be polled
foreach (BoardDevice dev in _pollees)
{
dev.Poll();
}
}
// Poll a single device on the board
// Polling typically is reading the temperature(s) from the device; TEC board
// also queries current and power.
// The idea here is to spread out the queries over time rather than sending every
// message at one go (up to twenty-four queries).
internal void PollNextDevice()
{
BoardDevice active = null;
// identify the device to next be polled
foreach (BoardDevice dev in _pollees)
{
// Ignore devices that aren't getting polled
if (dev.TicksRemaining == 0)
{
continue;
}
// Decrement the countdown for each device
dev.TicksRemaining -= 1;
// Has this one elapsed?
if (dev.TicksRemaining == 0)
{
// First in list to elapse?
if (active == null)
{
active = dev;
// reset to poll again after the interval expires
dev.TicksRemaining = dev.PollInterval / Tick;
}
else
{
// A device earlier in the list will be polled;
// need to defer this one until next available tik
dev.TicksRemaining += 1;
}
}
}
// Have an elapsed one?
if (active != null)
{
// Poll it
active.Poll();
// Move device to the end of the list
// so that older ones get a chance if this has a short interval
_pollees.Remove(active);
_pollees.Add(active);
}
}