/// <summary>
/// Calculates the average power in W.
///
/// Under normal conditions with complete RF reception, average power equals instantaneous
/// power. In conditions where packets are lost, average power accurately calculates power
/// over the interval between the received messages.
/// </summary>
/// <param name="message1">The most recent WheelTorqueDataPage message recieved.</param>
/// <param name="message2">The second most recent WheelTorqueDataPage message recieved.
/// </param>
/// <returns>The average power in W.</returns>
public static float CalculateAvgPower(PowerOnlyDataPage message1, PowerOnlyDataPage message2)
{
// See ANT+ Device Profile - Bicycle Power, page 33 (ver. 4.2)
// https://www.thisisant.com/resources/bicycle-power/
return(AntUtilFunctions.rolloverDiff(message1.AccumulatedPower, message2.AccumulatedPower) /
((float)AntUtilFunctions.rolloverDiff(message1.UpdateEventCount, message2.UpdateEventCount)));
}
void PowerOnlyReceived(object sender, EventArgs e)
{
PowerOnlyDataPage powerOnly = (PowerOnlyDataPage)sender;
if (lastPowerOnly != null)
{
float power = PowerOnlyDataPage.CalculateAvgPower(powerOnly, lastPowerOnly);
if (!float.IsNaN(power))
bikeData.AntPWR = power;
}
lastPowerOnly = powerOnly;
}
/// <summary>
/// Calculates the average power in W.
///
/// Under normal conditions with complete RF reception, average power equals instantaneous
/// power. In conditions where packets are lost, average power accurately calculates power
/// over the interval between the received messages.
/// </summary>
/// <param name="message1">The most recent WheelTorqueDataPage message recieved.</param>
/// <param name="message2">The second most recent WheelTorqueDataPage message recieved.
/// </param>
/// <returns>The average power in W.</returns>
public static float CalculateAvgPower(PowerOnlyDataPage message1, PowerOnlyDataPage message2)
{
// See ANT+ Device Profile - Bicycle Power, page 33 (ver. 4.2)
// https://www.thisisant.com/resources/bicycle-power/
return AntUtilFunctions.rolloverDiff(message1.AccumulatedPower, message2.AccumulatedPower) /
((float) AntUtilFunctions.rolloverDiff(message1.UpdateEventCount, message2.UpdateEventCount));
}
