/// <summary>
/// Sets the Date and Time on the DS1307.
/// </summary>
/// <param name="value">The date and time as a System.DateTime object
/// that will be saved on the DS1307.</param>
public async Task SetDateAsync(DateTime value)
{
byte[] writeBuffer = new byte[]
{
//RTC_ADDRESS,
Bcd.FromInt(value.Second),
Bcd.FromInt(value.Minute),
Bcd.FromInt(value.Hour),
Bcd.FromInt((int)value.DayOfWeek),
Bcd.FromInt(value.Day),
Bcd.FromInt(value.Month),
Bcd.FromInt(value.Year >= 2000 ? value.Year - 2000: 0),
};
await this.i2c.WriteAsync(RTC_ADDRESS, writeBuffer);
}
/*
* /// <summary>
* /// Get date and time from RTC
* /// </summary>
* /// <returns>Date and time read</returns>
* public DateTime GetDateTime()
* {
* DateTime dateTime;
*
* // read seconds converting from BCD
* this.ramAddress[0] = SECONDS_ADDR;
* this.ReadRam(this.ramAddress, this.ramData);
* // avoid clock halt bit
* this.ramData[0] = (byte)(this.ramData[0] & ~CLOCK_HALT);
* int second = (this.ramData[0] >> 4) * 10 + (this.ramData[0] & 0x0F);
*
* // read minutes converting from BCD
* this.ramAddress[0] = MINUTES_ADDR;
* this.ReadRam(this.ramAddress, this.ramData);
* int minute = (this.ramData[0] >> 4) * 10 + (this.ramData[0] & 0x0F);
*
* // read hours converting from BCD
* this.ramAddress[0] = HOURS_ADDR;
* this.ReadRam(this.ramAddress, this.ramData);
* // avoid 12/24 hour bit (forced 24 hour)
* this.ramData[0] = (byte)(this.ramData[0] & ~HOUR_12_24);
* int hour = (this.ramData[0] >> 4) * 10 + (this.ramData[0] & 0x0F);
*
* // read day converting from BCD
* this.ramAddress[0] = DAY_ADDR;
* this.ReadRam(this.ramAddress, this.ramData);
* DayOfWeek day = (DayOfWeek)this.ramData[0];
*
* // read date converting from BCD
* this.ramAddress[0] = DATE_ADDR;
* this.ReadRam(this.ramAddress, this.ramData);
* int date = (this.ramData[0] >> 4) * 10 + (this.ramData[0] & 0x0F);
*
* // read month converting from BCD
* this.ramAddress[0] = MONTH_ADDR;
* this.ReadRam(this.ramAddress, this.ramData);
* int month = (this.ramData[0] >> 4) * 10 + (this.ramData[0] & 0x0F);
*
* // read year converting from BCD
* this.ramAddress[0] = YEAR_ADDR;
* this.ReadRam(this.ramAddress, this.ramData);
* int year = (this.ramData[0] >> 4) * 10 + (this.ramData[0] & 0x0F);
* year += 2000;
*
* dateTime = new DateTime(year, month, date, hour, minute, second);
*
* return dateTime;
* }*/
/// <summary>
/// Get the current Date and Time from the DS1307.
/// </summary>
/// <returns>The current date and time as a System.DateTime object.</returns>
public Task <DateTime> GetDateAsync()
{
DateTime returnValue = DateTime.MinValue;
byte[] readBuffer = new byte[7];
byte[] writeBuffer = new byte[] { RTC_ADDRESS };
this.i2c.ReadBytes(RTC_ADDRESS, (byte)readBuffer.Length, readBuffer);
returnValue = new DateTime
(
Bcd.ToInt(readBuffer[6]) + 2000, // Year
Bcd.ToInt(readBuffer[5]), // Month
Bcd.ToInt(readBuffer[4]), // Day
Bcd.ToInt((byte)(readBuffer[2] & 0x3f)), // Hours over 24 hours (bit 6 is 24/12 hour format; 1 = 12, 0 = 24)
Bcd.ToInt(readBuffer[1]), // Minutes
Bcd.ToInt((byte)(readBuffer[0] & 0x7f)) // Seconds (bit 7 is the clock halt bit; 0 = enabled, 1 = halted)
);
return(Task <DateTime> .FromResult(returnValue));
}
public Bcd(int value)
{
_value = Bcd.FromInt(value);
}