1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSBSPsARMLPC24XX
*
* @brief RTC configuration.
*/
/*
* Copyright (c) 2008 embedded brains GmbH. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <libchip/rtc.h>
#include <bsp/lpc24xx.h>
#include <bsp/io.h>
#define LPC24XX_RTC_NUMBER 1
static void lpc24xx_rtc_initialize(int minor)
{
/* Enable module power */
lpc24xx_module_enable(LPC24XX_MODULE_RTC, LPC24XX_MODULE_PCLK_DEFAULT);
/* Enable the RTC and use external clock */
RTC_CCR = RTC_CCR_CLKEN | RTC_CCR_CLKSRC;
/* Disable interrupts */
RTC_CIIR = 0;
RTC_CISS = 0;
RTC_AMR = 0xff;
/* Clear interrupts */
RTC_ILR = RTC_ILR_RTCCIF | RTC_ILR_RTCALF | RTC_ILR_RTSSF;
}
static int lpc24xx_rtc_get_time(int minor, rtems_time_of_day *tod)
{
tod->ticks = 0;
tod->second = RTC_SEC;
tod->minute = RTC_MIN;
tod->hour = RTC_HOUR;
tod->day = RTC_DOM;
tod->month = RTC_MONTH;
tod->year = RTC_YEAR;
return 0;
}
static int lpc24xx_rtc_set_time(int minor, const rtems_time_of_day *tod)
{
RTC_SEC = tod->second;
RTC_MIN = tod->minute;
RTC_HOUR = tod->hour;
RTC_DOM = tod->day;
RTC_MONTH = tod->month;
RTC_YEAR = tod->year;
return 0;
}
static bool lpc24xx_rtc_probe(int minor)
{
return true;
}
const rtc_fns lpc24xx_rtc_ops = {
.deviceInitialize = lpc24xx_rtc_initialize,
.deviceGetTime = lpc24xx_rtc_get_time,
.deviceSetTime = lpc24xx_rtc_set_time
};
size_t RTC_Count = LPC24XX_RTC_NUMBER;
rtc_tbl RTC_Table [LPC24XX_RTC_NUMBER] = {
{
.sDeviceName = "/dev/rtc",
.deviceType = RTC_CUSTOM,
.pDeviceFns = &lpc24xx_rtc_ops,
.deviceProbe = lpc24xx_rtc_probe,
.pDeviceParams = NULL,
.ulCtrlPort1 = 0,
.ulDataPort = 0,
.getRegister = NULL,
.setRegister = NULL
}
};
|
