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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 by Jonathan Gordon
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "spi.h"
#include "rtc.h"
#include <stdbool.h>
/* Choose one of: */
#define ADDR_READ 0x04
#define ADDR_WRITE 0x00
/* and one of: */
#define ADDR_ONE 0x08
#define ADDR_BURST 0x00
void rtc_init(void)
{
}
int rtc_read_datetime(unsigned char* buf)
{
char command = ADDR_READ|ADDR_BURST; /* burst read from the start of the time/date reg */
spi_block_transfer(SPI_target_RX5X348AB, &command, 1, buf, 7);
return 1;
}
int rtc_write_datetime(unsigned char* buf)
{
char command = ADDR_WRITE|ADDR_BURST; /* burst read from the start of the time/date reg */
char data[8];
int i;
data[0] = command;
for (i=1;i<8;i++)
data[i] = buf[i-1];
spi_block_transfer(SPI_target_RX5X348AB, data, 8, NULL, 0);
return 1;
}
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