firmware/drivers/rtc/rtc_pcf50606.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 by Linus Nielsen Feltzing, Uwe Freese, Laurent Baum
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include "config.h"
  22 #include "i2c.h"
  23 #include "rtc.h"
  24 #include "kernel.h"
  25 #include "system.h"
  26 #include "pcf50606.h"
  27 #include <stdbool.h>
  28
  29 void rtc_init(void)
  30 {
  31 }
  32
  33 int rtc_read_datetime(unsigned char* buf) {
  34     int rc;
  35     int oldlevel = disable_irq_save();
  36
  37     rc = pcf50606_read_multiple(0x0a, buf, 7);
  38
  39     restore_irq(oldlevel);
  40     return rc;
  41 }
  42
  43 int rtc_write_datetime(unsigned char* buf) {
  44     int rc;
  45     int oldlevel = disable_irq_save();
  46
  47     rc = pcf50606_write_multiple(0x0a, buf, 7);
  48
  49     restore_irq(oldlevel);
  50
  51     return rc;
  52 }
  53