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Started working on RTC module for str9 ( alarm interrupt not working …
…yet )
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/******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** | ||
* File Name : 91x_rtc.c | ||
* Author : MCD Application Team | ||
* Version : V2.1 | ||
* Date : 12/22/2008 | ||
* Description : This file provides the RTC library firmware functions | ||
******************************************************************************** | ||
* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH | ||
* CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS | ||
* A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT | ||
* OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT | ||
* OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION | ||
* CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. | ||
*******************************************************************************/ | ||
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/* Includes ------------------------------------------------------------------*/ | ||
#include "91x_rtc.h" | ||
#include "91x_scu.h" | ||
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/* Include of other module interface headers ---------------------------------*/ | ||
/* Local includes ------------------------------------------------------------*/ | ||
/* Private typedef -----------------------------------------------------------*/ | ||
/* Private define ------------------------------------------------------------*/ | ||
/* Private macro -------------------------------------------------------------*/ | ||
/* Private variables ---------------------------------------------------------*/ | ||
/* Private function prototypes -----------------------------------------------*/ | ||
u8 BYTEToBCD2(u8 value); | ||
u16 WORDToBCD3(u16 value); | ||
u8 BCD2ToBYTE(u8 value); | ||
u16 BCD3ToBYTE(u16 value); | ||
/* Interface functions -------------------------------------------------------*/ | ||
/* Private functions ---------------------------------------------------------*/ | ||
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/******************************************************************************* | ||
* Function Name : BYTEToBCD2 | ||
* Description : Converts a 2 digit decimal to BCD format | ||
* Input : None | ||
* Output : None | ||
* Return : Converted byte | ||
*******************************************************************************/ | ||
u8 BYTEToBCD2(u8 value) | ||
{ | ||
u8 bcdhigh = 0; | ||
while (value >= 10) | ||
{ | ||
bcdhigh++; | ||
value -= 10; | ||
} | ||
return (bcdhigh << 4) | value; | ||
} | ||
/******************************************************************************* | ||
* Function Name : WORDToBCD3 | ||
* Description : Converts a 3 digit decimal to BCD format | ||
* Input : None | ||
* Output : None | ||
* Return : Converted word | ||
*******************************************************************************/ | ||
u16 WORDToBCD3(u16 value) | ||
{ | ||
u16 bcdhigh = 0; | ||
while (value >= 100) | ||
{ | ||
bcdhigh++; | ||
value -= 100; | ||
} | ||
bcdhigh <<= 4; | ||
while (value >= 10) | ||
{ | ||
bcdhigh++; | ||
value -= 10; | ||
} | ||
return (bcdhigh << 4) | value; | ||
} | ||
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/******************************************************************************* | ||
* Function Name : BCD3ToWORD | ||
* Description : convert from 3 digit BCD to Binary | ||
* Input : None | ||
* Output : None | ||
* Return : Converted word | ||
*******************************************************************************/ | ||
u16 BCD3ToWORD(u16 value) | ||
{ | ||
return (u16)((((value&0xF00)>>8)*100) + (((value&0x0F0)>>4)*10) + (value&0x0F)); | ||
} | ||
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/******************************************************************************* | ||
* Function Name : BCD2ToBYTE | ||
* Description : convert from 2 digit BCD to Binary | ||
* Input : None | ||
* Output : None | ||
* Return : Converted word | ||
*******************************************************************************/ | ||
u8 BCD2ToBYTE(u8 value) | ||
{ | ||
u32 tmp; | ||
tmp= ((value&0xF0)>>4)*10; | ||
return (u8)(tmp+ (value&0x0F)); | ||
} | ||
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/******************************************************************************* | ||
* Function Name : RTC_DeInit | ||
* Description : Resets the RTC peripheral registers | ||
* Input : None | ||
* Output : None | ||
* Return : None | ||
*******************************************************************************/ | ||
void RTC_DeInit(void) | ||
{ | ||
SCU_APBPeriphReset(__RTC,ENABLE); | ||
SCU_APBPeriphReset(__RTC,DISABLE); | ||
} | ||
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/******************************************************************************* | ||
* Function Name : RTC_SetDate | ||
* Description : Sets the Date register | ||
* Input : struct of type RTC_DATE | ||
* Output : None | ||
* Return : None | ||
*******************************************************************************/ | ||
void RTC_SetDate(RTC_DATE Date) | ||
{ | ||
u32 tmp = 0; | ||
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RTC->CR |=0x80; /*Enable write operation in DTR register*/ | ||
RTC->DTR = 0; | ||
tmp = BYTEToBCD2(Date.century); | ||
RTC->DTR|=tmp<<24; | ||
tmp = BYTEToBCD2(Date.year); | ||
RTC->DTR|=tmp<<16; | ||
tmp = BYTEToBCD2(Date.month); | ||
RTC->DTR|=tmp<<8; | ||
tmp = BYTEToBCD2(Date.weekday); | ||
RTC->DTR|=tmp; | ||
RTC->TR &=0xFFFFFF; | ||
tmp = BYTEToBCD2(Date.day); | ||
RTC->TR|=tmp<<24; | ||
RTC->CR &=~0x80; /*Disable write operation in DTR register*/ | ||
} | ||
/******************************************************************************* | ||
* Function Name : RTC_SetTime | ||
* Description : Sets the Time register | ||
* Input : struct of type RTC_TIME | ||
* Output : None | ||
* Return : None | ||
*******************************************************************************/ | ||
void RTC_SetTime(RTC_TIME Time) | ||
{ | ||
u32 tmp = 0; | ||
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RTC->CR |=0x80; /*Enable write operation in TR register*/ | ||
RTC->TR &= 0xFF000000; | ||
tmp = BYTEToBCD2(Time.hours); | ||
RTC->TR|=tmp<<16; | ||
tmp = BYTEToBCD2(Time.minutes); | ||
RTC->TR|=tmp<<8; | ||
tmp = BYTEToBCD2(Time.seconds); | ||
RTC->TR|=tmp; | ||
RTC->MILR = 0; | ||
RTC->MILR |= WORDToBCD3(Time.milliseconds); | ||
RTC->CR &=~0x80; /*Disable write operation in TR register*/ | ||
} | ||
/******************************************************************************* | ||
* Function Name : RTC_SetAlarm | ||
* Description : Sets the Alarm register | ||
* Input : Struct of type RTC_ALARM | ||
* Output : Date | ||
* Return : None | ||
*******************************************************************************/ | ||
void RTC_SetAlarm(RTC_ALARM Alarm) | ||
{ | ||
u32 tmp = 0; | ||
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RTC->CR |=0x80; /*Enable write operation in ATR register*/ | ||
RTC->ATR = 0; | ||
tmp = BYTEToBCD2(Alarm.day); | ||
RTC->ATR|=tmp<<24; | ||
tmp = BYTEToBCD2(Alarm.hours); | ||
RTC->ATR|=tmp<<16; | ||
tmp = BYTEToBCD2(Alarm.minutes); | ||
RTC->ATR|=tmp<<8; | ||
tmp = BYTEToBCD2(Alarm.seconds); | ||
RTC->ATR|=tmp; | ||
RTC->CR &=~0x80; /*Disable write operation in ATR register*/ | ||
} | ||
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/******************************************************************************* | ||
* Function Name : RTC_GetDate | ||
* Description : Gets RTC date in BCD coded or BINARY code | ||
* Input : -Format: BCD or BINARY | ||
* -Date: pointer to structure of type RTC_DATE to be filled by function | ||
* Output : None | ||
* Return : None | ||
*******************************************************************************/ | ||
void RTC_GetDate(u8 Format, RTC_DATE * Date) | ||
{ | ||
Date->century = (u8)((RTC->DTR&0xFF000000)>>24); | ||
Date->year = (u8)((RTC->DTR&0x00FF0000)>>16); | ||
Date->month = (u8)((RTC->DTR&0x00001F00)>>8); | ||
Date->day = (u8)((RTC->TR&0x3F000000)>>24); | ||
Date->weekday = (u8)(RTC->DTR&0xF); | ||
if (Format == BINARY) | ||
{ | ||
Date->century = BCD2ToBYTE(Date->century); | ||
Date->year = BCD2ToBYTE(Date->year); | ||
Date->month = BCD2ToBYTE(Date->month); | ||
Date->day = BCD2ToBYTE(Date->day); | ||
Date->weekday = BCD2ToBYTE(Date->weekday); | ||
} | ||
} | ||
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/******************************************************************************* | ||
* Function Name : RTC_GetTime | ||
* Description : Gets TIME in BCD coded or BINARY code | ||
* Input : -Format: BCD or BINARY | ||
* -Time : pointer to structure of type RTC_TIME to be filled by function | ||
* Output : Time | ||
* Return : None | ||
*******************************************************************************/ | ||
void RTC_GetTime(u8 Format, RTC_TIME * Time) | ||
{ | ||
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Time->hours = (u8)((RTC->TR&0x003F0000)>>16); | ||
Time->minutes = (u8)((RTC->TR&0x00007F00)>>8); | ||
Time->seconds = (u8)(RTC->TR&0x7F); | ||
Time->milliseconds =(u16)(RTC->MILR&0xFFF); | ||
if (Format == BINARY) | ||
{ | ||
Time->hours = BCD2ToBYTE(Time->hours); | ||
Time->minutes = BCD2ToBYTE(Time->minutes); | ||
Time->seconds = BCD2ToBYTE(Time->seconds); | ||
Time->milliseconds = BCD3ToWORD(Time->milliseconds); | ||
} | ||
} | ||
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/******************************************************************************* | ||
* Function Name : RTC_GetAlarm | ||
* Description : Gets the RTC Alarm in BCD or BINARY code | ||
* Input : -Format: BCD or BINARY | ||
* -Alarm : pointer to structure of type RTC_ALARM to be filled by function | ||
* Output : Alarm | ||
* Return : None | ||
*******************************************************************************/ | ||
void RTC_GetAlarm(u8 Format,RTC_ALARM * Alarm) | ||
{ | ||
Alarm->day = (u8)((RTC->ATR&0x3F000000)>>24); | ||
Alarm->hours = (u8)((RTC->ATR&0x003F0000)>>16); | ||
Alarm->minutes = (u8)((RTC->ATR&0x00007F00)>>8); | ||
Alarm->seconds = (u8)((RTC->ATR)&0x7F); | ||
if (Format == BINARY) | ||
{ | ||
Alarm->day = BCD2ToBYTE(Alarm->day); | ||
Alarm->hours = BCD2ToBYTE(Alarm->hours); | ||
Alarm->minutes = BCD2ToBYTE(Alarm->minutes); | ||
Alarm->seconds = BCD2ToBYTE(Alarm->seconds); | ||
} | ||
} | ||
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/******************************************************************************* | ||
* Function Name : RTC_TamperConfig | ||
* Description : configures the Tamper mode and tamper polarity | ||
* Input : -TamperMode: RTC_TamperMode_Edge or RTC_TamperMode_Level | ||
* -TamperPol : RTC_TamperPol_Low or RTC_TamperMode_High | ||
* Output : None | ||
* Return : None | ||
*******************************************************************************/ | ||
void RTC_TamperConfig(u32 TamperMode, u32 TamperPol) | ||
{ | ||
RTC->CR&=RTC_TamperMode_Edge; | ||
if (TamperMode!=RTC_TamperMode_Edge) | ||
RTC->CR|=RTC_TamperMode_Level; | ||
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RTC->CR&=RTC_TamperPol_Low; | ||
if (TamperPol!=RTC_TamperPol_Low) | ||
RTC->CR|=RTC_TamperPol_High; | ||
} | ||
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/******************************************************************************* | ||
* Function Name : RTC_TamperCmd | ||
* Description : Enable or Disable Tamper | ||
* Input : NewState: ENABLE or DISABLE | ||
* Output : None | ||
* Return : None | ||
*******************************************************************************/ | ||
void RTC_TamperCmd(FunctionalState NewState) | ||
{ | ||
RTC->CR&=0xFFFFFFFE; | ||
if (NewState==ENABLE) | ||
RTC->CR|=0x1; | ||
} | ||
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/******************************************************************************* | ||
* Function Name : RTC_AlarmCmd | ||
* Description : Enable or Disable Alarm | ||
* Input : NewState: ENABLE or DISABLE | ||
* Output : None | ||
* Return : None | ||
*******************************************************************************/ | ||
void RTC_AlarmCmd(FunctionalState NewState) | ||
{ | ||
RTC->CR&=~0x100000; | ||
if (NewState==ENABLE) | ||
RTC->CR|=0x100000; | ||
} | ||
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/******************************************************************************* | ||
* Function Name : RTC_CalibClockCmd | ||
* Description : Enable or Disable RTC Calibration Clock Output | ||
* Input : NewState: ENABLE or DISABLE | ||
* Output : None | ||
* Return : None | ||
*******************************************************************************/ | ||
void RTC_CalibClockCmd(FunctionalState NewState) | ||
{ | ||
RTC->CR&=~0x40; | ||
if (NewState ==ENABLE) | ||
RTC->CR|=0x40; | ||
} | ||
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/******************************************************************************* | ||
* Function Name : SRAMBattPowerCmd | ||
* Description : Enable or Disable SRAM backup Power by VBATT | ||
* Input : NewState : ENABLE or DISABLE | ||
* Output : None | ||
* Return : None | ||
*******************************************************************************/ | ||
void RTC_SRAMBattPowerCmd(FunctionalState NewState) | ||
{ | ||
RTC->CR&=~0x8; | ||
if (NewState ==ENABLE) | ||
RTC->CR|=0x8; | ||
} | ||
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/******************************************************************************* | ||
* Function Name : RTC_PeridicIntConfig | ||
* Description : Select a Periodic CLock | ||
* Input : PeriodicClock | ||
* Output : None | ||
* Return : None | ||
* Note : When PeriodicClock = RTC_Per_DISABLE the Periodic clock generation | ||
* will be disabled. | ||
*******************************************************************************/ | ||
void RTC_PeriodicIntConfig(u32 PeriodicClock) | ||
{ | ||
RTC->CR &=~0xF0000; | ||
RTC->CR|=PeriodicClock; | ||
} | ||
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/******************************************************************************* | ||
* Function Name : RTC_ITConfig | ||
* Description : Enable or Disable an interrupt | ||
* Input : -RTC_IT : RTC interrupt | ||
* -Newstate: Enable or Disable | ||
* Output : None | ||
* Return : None | ||
*******************************************************************************/ | ||
void RTC_ITConfig(u32 RTC_IT, FunctionalState NewState) | ||
{ | ||
RTC->CR&=~RTC_IT; | ||
if (NewState==ENABLE) | ||
RTC->CR|=RTC_IT; | ||
} | ||
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/******************************************************************************* | ||
* Function Name : RTC_GetFlagStatus | ||
* Description : Gets a RTC flag status | ||
* Input : RTC_FLAG | ||
* Output : None | ||
* Return : FlagStatus :SET or RESET | ||
*******************************************************************************/ | ||
FlagStatus RTC_GetFlagStatus(u32 RTC_FLAG) | ||
{ | ||
if (RTC->SR&RTC_FLAG) return SET; | ||
else return RESET; | ||
} | ||
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/******************************************************************************* | ||
* Function Name : RTC_ClearFlag | ||
* Description : Clears a RTC flag | ||
* Input : RTC_FLAG | ||
* Output : None | ||
* Return : None | ||
* Note : Before clearing the RTC Periodic Flag you need to disable the | ||
* Periodic interrupt generation, to do this use function | ||
* RTC_PeriodicIntConfig(RTC_Per_DISABLE) | ||
*******************************************************************************/ | ||
void RTC_ClearFlag(u32 RTC_FLAG) | ||
{ | ||
vu32 tmp=0; | ||
if (RTC_FLAG == RTC_FLAG_Per) tmp=RTC->SR; | ||
else if (RTC_FLAG == RTC_FLAG_Alarm) RTC->CR&=~0x100000; | ||
else if (RTC_FLAG == RTC_FLAG_Tamper) RTC->CR&=~0x1; | ||
} | ||
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/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/ |
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