/// <summary>
/// Get the current date and time from an NTP server(s) and update
/// the DS1307 RTC (Real Time Clock).
/// </summary>
/// <returns></returns>
private async Task UpdateClock()
{
// ***
// *** Make sure I2C is available. This will
// *** allow the code to be run on a normal PC
// *** without error.
// ***
if (ApiInformation.IsTypePresent(typeof(I2cDevice).FullName))
{
// ***
// *** Create the clint object and set a timeout value.
// ***
NtpClient ntp = new NtpClient();
ntp.Timeout = TimeSpan.FromSeconds(15);
// ***
// *** Make the call to the NTP server(s)
// ***
DateTime? dateTimeValue = await ntp.GetAsync(this.ApplicationSettngs.NtpServers);
// ***
// *** Set the date and time on the RTC
// ***
if (dateTimeValue.HasValue)
{
Ds1307 rtc = new Ds1307();
await rtc.SetAsync(dateTimeValue.Value);
}
}
}
private async Task TestClock()
{
// ***
// *** Clock
// ***
Ds1307 dtc = new Ds1307();
await dtc.InitializeAsync();
// ***
// *** Get the date and time from the clock
// ***
DateTimeOffset dt = await dtc.GetAsync();
// ***
// *** Create an NTP client and get the date and time
// ***
NtpClient ntp = new NtpClient();
DateTimeOffset? ndt = await ntp.GetAsync("0.pool.ntp.org", "1.pool.ntp.org", "2.pool.ntp.org", "3.pool.ntp.org");
// ***
// *** Update the clock if we have a result from the servers
// ***
if (ndt.HasValue)
{
await dtc.SetAsync(ndt.Value);
}
}