dbff3731a5
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15279 a1c6a512-1295-4272-9138-f99709370657
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id: rtc_as3514.c 12131 2007-01-27 20:48:48Z dan_a $
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*
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* Copyright (C) 2007 by Jonathan Gordon
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "spi.h"
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#include "rtc.h"
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#include <stdbool.h>
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/* Choose one of: */
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#define ADDR_READ 0x04
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#define ADDR_WRITE 0x00
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/* and one of: */
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#define ADDR_ONE 0x08
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#define ADDR_BURST 0x00
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void rtc_init(void)
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{
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}
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int rtc_read_datetime(unsigned char* buf)
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{
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char command = ADDR_READ|ADDR_BURST; /* burst read from the start of the time/date reg */
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spi_block_transfer(SPI_target_RX5X348AB,
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&command, 1, buf, 7);
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return 1;
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}
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int rtc_write_datetime(unsigned char* buf)
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{
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char command = ADDR_WRITE|ADDR_BURST; /* burst read from the start of the time/date reg */
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char data[8];
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int i;
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data[0] = command;
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for (i=1;i<8;i++)
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data[i] = buf[i-1];
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spi_block_transfer(SPI_target_RX5X348AB,
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data, 8, NULL, 0);
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return 1;
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}
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