コード例 #1
0
ファイル: DS1307.cs プロジェクト: likhvar/SkyeTracker
        /// <summary>
        /// Gets the date / time in 24 hour format.
        /// </summary>
        /// <returns>A DateTime object</returns>
        public DateTime Get()
        {
            var clockData   = new byte[7];
            var transaction = new I2CDevice.I2CTransaction[]
            {
                _i2CBus.CreateWriteTransaction(new[] { DS1307_RTC_START_ADDRESS }),
                _i2CBus.CreateReadTransaction(clockData)
            };

            if (_i2CBus.Execute(_configuration, transaction, TIMEOUT_TRANS) == 0)
            {
                throw new Exception("I2C transaction failed");
            }

            return(new DateTime(
                       BcdToDec(clockData[6]) + 2000, // year
                       BcdToDec(clockData[5]),        // month
                       BcdToDec(clockData[4]),        // day
                       BcdToDec(clockData[2] & 0x3f), // hours over 24 hours
                       BcdToDec(clockData[1]),        // minutes
                       BcdToDec(clockData[0] & 0x7f)  // seconds
                       ));
        }