📄 lib_rtc.c
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//*----------------------------------------------------------------------------
//* ATMEL Microcontroller Software Support - ROUSSET -
//*----------------------------------------------------------------------------
//* The software is delivered "AS IS" without warranty or condition of any
//* kind, either express, implied or statutory. This includes without
//* limitation any warranty or condition with respect to merchantability or
//* fitness for any particular purpose, or against the infringements of
//* intellectual property rights of others.
//*----------------------------------------------------------------------------
//* File Name : lib_rtc.c
//* Object : Real Time Clock Library File
//*
//* 1.0 06/09/00 JPP : Creation
//*----------------------------------------------------------------------------
#include "periph/rtc/lib_rtc.h"
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_close
//* Object : close by stop Real Time Clock count
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : none
//*----------------------------------------------------------------------------
void at91_rtc_close ( const RtcDesc *rtc_pt )
//* Begin
{
//* Stop the Real Time Clock Mode Register
rtc_pt->rtc_base->RTC_CR |= (RTC_UPDTIM |RTC_UPDCAL) ;
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_open
//* Object : open Real Time Clock count
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : none
//*----------------------------------------------------------------------------
void at91_rtc_open ( const RtcDesc *rtc_pt )
//* Begin
{
//* Set the Real Time Clock Mode Register
rtc_pt->rtc_base->RTC_CR &= ~(RTC_UPDTIM |RTC_UPDCAL) ;
//* clear status register
rtc_pt->rtc_base->RTC_SCR = RTC_ACKUPD | RTC_ALARM | RTC_SEC | RTC_TIMEV | RTC_CALEV;
//* clear all interrup
rtc_pt->rtc_base->RTC_IDR = RTC_ACKUPD | RTC_ALARM | RTC_SEC | RTC_TIMEV | RTC_CALEV;
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_get_event
//* Object : Read the event register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : none
//*----------------------------------------------------------------------------
u_int at91_rtc_get_event ( const RtcDesc *rtc_pt )
//* Begin
{
//* Read the event register
return ( rtc_pt->rtc_base->RTC_CR ) ;
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_set_event
//* Object : set the event in Mode Register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* <mode> new event value
//* Output Parameters : none
//*----------------------------------------------------------------------------
void at91_rtc_set_event ( const RtcDesc *rtc_pt, u_int mode )
//* Begin
{
u_int tmp;
//* set the event in Mode Register
// Get the update value
tmp = rtc_pt->rtc_base->RTC_CR & RTC_UPD_MASQ ;
// Update othr field
tmp |= mode;
rtc_pt->rtc_base->RTC_CR = tmp ;
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_set_24
//* Object : Set Real Time Clock Mode Register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* : <mode> = set/clear bits in the mode register
//* Output Parameters : none
//*----------------------------------------------------------------------------
void at91_rtc_set_24 ( const RtcDesc *rtc_pt )
//* Begin
{
//* Set the Real Time Clock Mode Register
rtc_pt->rtc_base->RTC_MR = RTC_24_HRMOD ;
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_clear_24
//* Object : Set Real Time Clock Mode Register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* : <mode> = set/clear bits in the mode register
//* Output Parameters : none
//*----------------------------------------------------------------------------
void at91_rtc_clear_24 ( const RtcDesc *rtc_pt )
//* Begin
{
//* Set the Real Time Clock Mode Register
rtc_pt->rtc_base->RTC_MR = RTC_12_HRMOD ;
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_get_24
//* Object : Read Real Time Clock Mode Register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : <mode> 1 => 24 h 0 => AM / PM
//*----------------------------------------------------------------------------
u_int at91_rtc_get_24 ( const RtcDesc *rtc_pt )
//* Begin
{
//* Return the Real Time Clock Mode Register
return ( rtc_pt->rtc_base->RTC_MR );
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_set_time
//* Object : Set Real Time Clock Time Register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : <sec> = second in BCD
//* <min> = minute in BCD
//* <hour> = hour in BCD
//* <ampm> = 0 for AM or 1 for PM
//*----------------------------------------------------------------------------
void at91_rtc_set_time ( const RtcDesc *rtc_pt, u_char sec, u_char min, u_char hour, u_char ampm )
//* Begin
{
//* clear status
rtc_pt->rtc_base->RTC_SCR = RTC_ACKUPD;
//* Stop the RTC
rtc_pt->rtc_base->RTC_CR |= RTC_UPDTIM ;
//* bit RTC_ACKUPD
while(((volatile int)rtc_pt->rtc_base->RTC_SR & RTC_ACKUPD) != RTC_ACKUPD) {}
//* Set the Real Time Clock Time Register
rtc_pt->rtc_base->RTC_TIMR = sec | ( min << RTC_MIN) | (hour <<RTC_HOUR) | ( ampm << RTC_AMPM);
//* Restart the RTC
rtc_pt->rtc_base->RTC_CR &= ~(RTC_UPDTIM) ;
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_get_time
//* Object : Read Real Time Clock Time Register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : <mode> = tim value
//*----------------------------------------------------------------------------
u_int at91_rtc_get_time ( const RtcDesc *rtc_pt )
//* Begin
{
//* Return the Real Time Clock Time Register
return ( rtc_pt->rtc_base->RTC_TIMR );
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_set_calendar
//* Object : Set Real Time Clock Calendar Register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : <cent> = century in BCD (19-20)
//* <year> = year in BCD (00-99)
//* <month> = month in BCD (01-12)
//* <day> = day in BCD (01-07)
//* <date> = date in BCD (01-31))
//*----------------------------------------------------------------------------
void at91_rtc_set_calendar ( const RtcDesc *rtc_pt, u_char cent, u_char year, u_char month, u_char day, u_char date )
//* Begin
{
//* clear status
rtc_pt->rtc_base->RTC_SCR = RTC_ACKUPD;
//* Stop the RTC
rtc_pt->rtc_base->RTC_CR |= RTC_UPDCAL ;
//* bit RTC_ACKUPD
while(((volatile int)rtc_pt->rtc_base->RTC_SR & RTC_ACKUPD) != RTC_ACKUPD) {}
//* Set the Real Time Clock Calendar Register
rtc_pt->rtc_base->RTC_CALR = cent | ( year << RTC_YEAR) | (month <<RTC_MONTH) | ( day << RTC_DAY)| ( date << RTC_DATE);
//* Restart the RTC
rtc_pt->rtc_base->RTC_CR &= ~(RTC_UPDCAL) ;
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_get_calendar
//* Object : Read Real Time Clock Calendar Register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : <mode> = Calendar Register
//*----------------------------------------------------------------------------
u_int at91_rtc_get_calendar ( const RtcDesc *rtc_pt )
//* Begin
{
//* Return the Real Time Clock Calendar Register
return ( rtc_pt->rtc_base->RTC_CALR );
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_set_time_alarm
//* Object : Set Real Time Clock Time Alarm Register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : <sec> = second in BCD
//* <min> = minute in BCD
//* <hour> = hour in BCD
//* <ampm> = 0 for AM or 1 for PM
//* <mode> = Alarm type sec, mimute, hours
//*----------------------------------------------------------------------------
void at91_rtc_set_time_alarm ( const RtcDesc *rtc_pt, u_char sec, u_char min, u_char hour, u_char ampm,u_int mode )
//* Begin
{
//* Set the Real Time Clock Time Alarm Register
rtc_pt->rtc_base->RTC_TAR = sec | ( min << RTC_MIN) | (hour <<RTC_HOUR) | ( ampm << RTC_AMPM)|mode;
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_get_time_alarm
//* Object : Read Real Time Clock Time Alarm Register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : <mode> = set/clear bits in the mode register
//*----------------------------------------------------------------------------
u_int at91_rtc_get_time_alarm ( const RtcDesc *rtc_pt )
//* Begin
{
//* Return the Real Time Clock Time Alarm Register
return ( rtc_pt->rtc_base->RTC_TAR );
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_set_cal_alarm
//* Object : Set Real Time Clock Calendar Alarm Register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : <month> = month in BCD (01-12)
//* <date> = date in BCD (01-31))
//*----------------------------------------------------------------------------
void at91_rtc_set_cal_alarm ( const RtcDesc *rtc_pt,u_char month, u_char date, u_int mode )
//* Begin
{
//* Set the Real Time Clock Calendar Alarm Register
rtc_pt->rtc_base->RTC_CAR = (month <<RTC_MONTH) |( date << RTC_DATE) | mode ;
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_get_cal_alarm
//* Object : Read Real Time Clock Calendar Alarm Register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : <mode> = set/clear bits in the mode register
//*----------------------------------------------------------------------------
u_int at91_rtc_get_cal_alarm ( const RtcDesc *rtc_pt )
//* Begin
{
//* Return the Real Time Clock Calendar Alarm Register
return ( rtc_pt->rtc_base->RTC_CAR );
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_get_status
//* Object : Read Real Time Clock Status Register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : <mode> = set/clear bits in the mode register
//*----------------------------------------------------------------------------
u_int at91_rtc_get_status ( const RtcDesc *rtc_pt )
//* Begin
{
//* Return the Real Time Clock Status Register
return ( rtc_pt->rtc_base->RTC_SR );
//* End
}
//*----------------------------------------------------------------------------
//* Function Name : at91_rtc_clear_status
//* Object : Clear status register
//* Input Parameters : <rtc_desc> = RTC Descriptor pointer
//* Output Parameters : none
//*----------------------------------------------------------------------------
void at91_rtc_clear_status ( const RtcDesc *rtc_pt )
//* Begin
{
//* clear status register
rtc_pt->rtc_base->RTC_SCR = RTC_ACKUPD | RTC_ALARM | RTC_SEC | RTC_TIMEV | RTC_CALEV;
//* End
}
//* End of file⌨️ 快捷键说明
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