/// <summary>
/// Read Time from PCF8563
/// </summary>
/// <returns>PCF8563 Time</returns>
protected override DateTime ReadTime()
{
// Sec, Min, Hour, Date, Day, Month & Century, Year
Span <byte> readBuffer = stackalloc byte[7];
_i2cDevice.WriteByte((byte)Pcf8563Register.PCF_SEC_ADDR);
_i2cDevice.Read(readBuffer);
return(new DateTime(1900 + (readBuffer[5] >> 7) * 100 + NumberHelper.Bcd2Dec(readBuffer[6]),
NumberHelper.Bcd2Dec((byte)(readBuffer[5] & 0b_0001_1111)),
NumberHelper.Bcd2Dec((byte)(readBuffer[3] & 0b_0011_1111)),
NumberHelper.Bcd2Dec((byte)(readBuffer[2] & 0b_0011_1111)),
NumberHelper.Bcd2Dec((byte)(readBuffer[1] & 0b_0111_1111)),
NumberHelper.Bcd2Dec((byte)(readBuffer[0] & 0b_0111_1111))));
}
/// <summary>
/// Read Time from DS3231
/// </summary>
/// <returns>DS3231 Time</returns>
protected override DateTime ReadTime()
{
// Sec, Min, Hour, Day, Date, Month & Century, Year
Span <byte> rawData = stackalloc byte[7];
_i2cDevice.WriteByte((byte)Ds3231Register.RTC_SEC_REG_ADDR);
_i2cDevice.Read(rawData);
return(new DateTime(1900 + (rawData[5] >> 7) * 100 + NumberHelper.Bcd2Dec(rawData[6]),
NumberHelper.Bcd2Dec((byte)(rawData[5] & 0b_0001_1111)),
NumberHelper.Bcd2Dec(rawData[4]),
NumberHelper.Bcd2Dec(rawData[2]),
NumberHelper.Bcd2Dec(rawData[1]),
NumberHelper.Bcd2Dec(rawData[0])));
}
/// <summary>
/// Read Time from DS1307
/// </summary>
/// <returns>DS1307 Time</returns>
protected override DateTime ReadTime()
{
Span <byte> readBuffer = stackalloc byte[7];
// Read all registers at the same time
_i2cDevice.WriteByte((byte)Ds1307Register.RTC_SEC_REG_ADDR);
_i2cDevice.Read(readBuffer);
// Details in the Datasheet P8
return(new DateTime(2000 + NumberHelper.Bcd2Dec(readBuffer[6]),
NumberHelper.Bcd2Dec(readBuffer[5]),
NumberHelper.Bcd2Dec(readBuffer[4]),
NumberHelper.Bcd2Dec(readBuffer[2]),
NumberHelper.Bcd2Dec(readBuffer[1]),
NumberHelper.Bcd2Dec((byte)(readBuffer[0] & 0b_0111_1111))));
}
