60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
/*-------------------------------------------------------------------------
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RTC library
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Written by Michael C. Miller.
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I invest time and resources providing this open source code,
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please support me by dontating (see https://github.com/Makuna/Rtc)
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-------------------------------------------------------------------------
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This file is part of the Makuna/Rtc library.
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Rtc is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Rtc is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with Rtc. If not, see
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<http://www.gnu.org/licenses/>.
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-------------------------------------------------------------------------*/
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#include <Arduino.h>
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#include "RtcUtility.h"
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uint8_t BcdToUint8(uint8_t val)
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{
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return val - 6 * (val >> 4);
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}
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uint8_t Uint8ToBcd(uint8_t val)
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{
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return val + 6 * (val / 10);
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}
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uint8_t BcdToBin24Hour(uint8_t bcdHour)
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{
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uint8_t hour;
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if (bcdHour & 0x40)
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{
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// 12 hour mode, convert to 24
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bool isPm = ((bcdHour & 0x20) != 0);
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hour = BcdToUint8(bcdHour & 0x1f);
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if (isPm)
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{
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hour += 12;
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}
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}
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else
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{
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hour = BcdToUint8(bcdHour);
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}
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return hour;
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}
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