98 lines
3.1 KiB
C
98 lines
3.1 KiB
C
/** @file
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Definitions for FAT File Time functions
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;******************************************************************************
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;* Copyright (c) 2014, Insyde Software Corp. All Rights Reserved.
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;*
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;* You may not reproduce, distribute, publish, display, perform, modify, adapt,
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;* transmit, broadcast, present, recite, release, license or otherwise exploit
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;* any part of this publication in any form, by any means, without the prior
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;* written permission of Insyde Software Corporation.
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;*
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;******************************************************************************
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*/
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#ifndef _FAT_FILE_TIME_H_
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#define _FAT_FILE_TIME_H_
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#include <Library/IoLib.h>
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#include <Library/CmosLib.h>
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#include <Library/TimerLib.h>
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#define R_CMOS_INDEX 0x70
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#define R_CMOS_DATA 0x71
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//
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// The maximum retry for RTC reading
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//
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#define MAX_RETRY 10000
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#define DELAY_TIME 10
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//
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// Dallas DS12C887 Real Time Clock
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//
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#define RTC_ADDRESS_SECONDS 0 // R/W Range 0..59
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#define RTC_ADDRESS_SECONDS_ALARM 1 // R/W Range 0..59
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#define RTC_ADDRESS_MINUTES 2 // R/W Range 0..59
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#define RTC_ADDRESS_MINUTES_ALARM 3 // R/W Range 0..59
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#define RTC_ADDRESS_HOURS 4 // R/W Range 1..12 or 0..23 Bit 7 is AM/PM
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#define RTC_ADDRESS_HOURS_ALARM 5 // R/W Range 1..12 or 0..23 Bit 7 is AM/PM
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#define RTC_ADDRESS_DAY_OF_THE_WEEK 6 // R/W Range 1..7
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#define RTC_ADDRESS_DAY_OF_THE_MONTH 7 // R/W Range 1..31
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#define RTC_ADDRESS_MONTH 8 // R/W Range 1..12
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#define RTC_ADDRESS_YEAR 9 // R/W Range 0..99
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#define RTC_ADDRESS_REGISTER_A 10 // R/W[0..6] R0[7]
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#define RTC_ADDRESS_REGISTER_B 11 // R/W
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#define RTC_ADDRESS_REGISTER_C 12 // RO
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#define RTC_ADDRESS_REGISTER_D 13 // RO
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#define RTC_ADDRESS_CENTURY 50 // R/W Range 19..20 Bit 8 is R/W
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#define CMOS_DAYLIGHT 0x36
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#define CMOS_TIME_ZONE 0x34
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typedef struct {
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UINT8 Address; ///< RTC offset address.
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UINT8 Data; ///< Corresponding data value.
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} RTC_COMPONENT;
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#pragma pack(1)
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//
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// Register A
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//
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typedef struct {
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UINT8 Rs : 4; // Rate Selection Bits
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UINT8 Dv : 3; // Divisor
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UINT8 Uip : 1; // Update in progress
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} RTC_REGISTER_A_BITS;
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typedef union {
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RTC_REGISTER_A_BITS Bits;
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UINT8 Data;
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} RTC_REGISTER_A;
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//
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// Register B
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//
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typedef struct {
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UINT8 Dse : 1; // 0 - Daylight saving disabled 1 - Daylight savings enabled
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UINT8 Mil : 1; // 0 - 12 hour mode 1 - 24 hour mode
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UINT8 Dm : 1; // 0 - BCD Format 1 - Binary Format
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UINT8 Sqwe : 1; // 0 - Disable SQWE output 1 - Enable SQWE output
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UINT8 Uie : 1; // 0 - Update INT disabled 1 - Update INT enabled
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UINT8 Aie : 1; // 0 - Alarm INT disabled 1 - Alarm INT Enabled
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UINT8 Pie : 1; // 0 - Periodic INT disabled 1 - Periodic INT Enabled
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UINT8 Set : 1; // 0 - Normal operation. 1 - Updates inhibited
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} RTC_REGISTER_B_BITS;
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typedef union {
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RTC_REGISTER_B_BITS Bits;
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UINT8 Data;
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} RTC_REGISTER_B;
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#pragma pack()
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#endif
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