source: rtems/c/src/lib/libbsp/arm/lpc24xx/rtc/rtc-config.c @ 5aeed17

4.104.115
Last change on this file since 5aeed17 was 5aeed17, checked in by Thomas Doerfler <Thomas.Doerfler@…>, on Sep 22, 2008 at 11:30:09 AM

lpc24xx: new BSP

  • Property mode set to 100644
File size: 1.8 KB
Line 
1/**
2 * @file
3 *
4 * @ingroup lpc24xx
5 *
6 * @brief RTC configuration.
7 */
8
9/*
10 * Copyright (c) 2008
11 * Embedded Brains GmbH
12 * Obere Lagerstr. 30
13 * D-82178 Puchheim
14 * Germany
15 * rtems@embedded-brains.de
16 *
17 * The license and distribution terms for this file may be found in the file
18 * LICENSE in this distribution or at http://www.rtems.com/license/LICENSE.
19 */
20
21#include <libchip/rtc.h>
22
23#include <bsp/lpc24xx.h>
24
25#define LPC24XX_RTC_NUMBER 1
26
27static void lpc24xx_rtc_initialize( int minor)
28{
29  /* Enable the RTC and use external clock */
30  RTC_CCR = RTC_CCR_CLKEN | RTC_CCR_CLKSRC;
31
32  /* Disable interrupts */
33  RTC_CIIR = 0;
34  RTC_CISS = 0;
35  RTC_AMR = 0xff;
36
37  /* Clear interrupts */
38  RTC_ILR = RTC_ILR_RTCCIF | RTC_ILR_RTCALF | RTC_ILR_RTSSF;
39}
40
41static int lpc24xx_rtc_get_time( int minor, rtems_time_of_day *tod)
42{
43  tod->ticks = 0;
44  tod->second = RTC_SEC;
45  tod->minute = RTC_MIN;
46  tod->hour = RTC_HOUR;
47  tod->day = RTC_DOM;
48  tod->month = RTC_MONTH;
49  tod->year = RTC_YEAR;
50
51  return 0;
52}
53
54static int lpc24xx_rtc_set_time( int minor, const rtems_time_of_day *tod)
55{
56  RTC_SEC = tod->second;
57  RTC_MIN = tod->minute;
58  RTC_HOUR = tod->hour;
59  RTC_DOM = tod->day;
60  RTC_MONTH = tod->month;
61  RTC_YEAR = tod->year;
62
63  return 0;
64}
65
66static bool lpc24xx_rtc_probe( int minor)
67{
68  return true;
69}
70
71const rtc_fns lpc24xx_rtc_ops = {
72  .deviceInitialize = lpc24xx_rtc_initialize,
73  .deviceGetTime = lpc24xx_rtc_get_time,
74  .deviceSetTime = lpc24xx_rtc_set_time
75};
76
77unsigned long RTC_Count = LPC24XX_RTC_NUMBER;
78
79rtems_device_minor_number RTC_Minor = 0;
80
81rtc_tbl RTC_Table [LPC24XX_RTC_NUMBER] = {
82  {
83    .sDeviceName = "/dev/rtc",
84    .deviceType = RTC_CUSTOM,
85    .pDeviceFns = &lpc24xx_rtc_ops,
86    .deviceProbe = lpc24xx_rtc_probe,
87    .pDeviceParams = NULL,
88    .ulCtrlPort1 = 0,
89    .ulDataPort = 0,
90    .getRegister = NULL,
91    .setRegister = NULL
92  }
93};
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