ARM学习笔记--RTC编程（二）

/*------------- Real-Time Clock (RTC) ----------------------------------------*/
typedef struct
{
__IO uint8_t ILR;
uint8_t RESERVED0[7];
__IO uint8_t CCR;
uint8_t RESERVED1[3];
__IO uint8_t CIIR;
uint8_t RESERVED2[3];
__IO uint8_t AMR;
uint8_t RESERVED3[3];
__I uint32_t CTIME0;
__I uint32_t CTIME1;
__I uint32_t CTIME2;
__IO uint8_t SEC;
uint8_t RESERVED4[3];
__IO uint8_t MIN;
uint8_t RESERVED5[3];
__IO uint8_t HOUR;
uint8_t RESERVED6[3];
__IO uint8_t DOM;
uint8_t RESERVED7[3];
__IO uint8_t DOW;
uint8_t RESERVED8[3];
__IO uint16_t DOY;
uint16_t RESERVED9;
__IO uint8_t MONTH;
uint8_t RESERVED10[3];
__IO uint16_t YEAR;
uint16_t RESERVED11;
__IO uint32_t CALIBRATION;
__IO uint32_t GPREG0;
__IO uint32_t GPREG1;
__IO uint32_t GPREG2;
__IO uint32_t GPREG3;
__IO uint32_t GPREG4;
__IO uint8_t RTC_AUXEN;
uint8_t RESERVED12[3];
__IO uint8_t RTC_AUX;
uint8_t RESERVED13[3];
__IO uint8_t ALSEC;
uint8_t RESERVED14[3];
__IO uint8_t ALMIN;
uint8_t RESERVED15[3];
__IO uint8_t ALHOUR;
uint8_t RESERVED16[3];
__IO uint8_t ALDOM;
uint8_t RESERVED17[3];
__IO uint8_t ALDOW;
uint8_t RESERVED18[3];
__IO uint16_t ALDOY;
uint16_t RESERVED19;
__IO uint8_t ALMON;
uint8_t RESERVED20[3];
__IO uint16_t ALYEAR;
uint16_t RESERVED21;
__IO uint32_t ERSTATUS;
__IO uint32_t ERCONTROL;
__IO uint32_t ERCOUNTERS;
uint32_t RESERVED22;
__IO uint32_t ERFIRSTSTAMP0;
__IO uint32_t ERFIRSTSTAMP1;
__IO uint32_t ERFIRSTSTAMP2;
uint32_t RESERVED23;
__IO uint32_t ERLASTSTAMP0;
__IO uint32_t ERLASTSTAMP1;
__IO uint32_t ERLASTSTAMP2;
} LPC_RTC_TypeDef;

void RTC_Init (LPC_RTC_TypeDef *RTCx)
{
/* Set up clock and power for RTC module */
CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCRTC, ENABLE); //开启RTC功能，配置寄存器PCONP

// Clear all register to be default
RTCx->ILR = 0x00; // 中断地址寄存器，增量中断、报警中断
RTCx->CCR = 0x00; // 时钟控制寄存器（控制使能、复位、是否校准）
RTCx->CIIR = 0x00;// 计数增量中断寄存器 （控制按秒或分等变化一次发生中断）
RTCx->AMR = 0xFF; // 报警中断寄存器
RTCx->CALIBRATION = 0x00; //校准寄存器，看时间走多长然后校准一次（1s或2s）
}

void RTC_ResetClockTickCounter(LPC_RTC_TypeDef *RTCx)
{
RTCx->CCR |= RTC_CCR_CTCRST;
RTCx->CCR &= (~RTC_CCR_CTCRST) & RTC_CCR_BITMASK; // RTC_CCR_BITMASK：1101
}

void RTC_Default_Set(void)
{
//Set current time
RTC_SetTime (LPC_RTC, RTC_TIMETYPE_SECOND, 0);//参数：(LPC_RTC_TypeDef *RTCx, uint32_t Timetype, uint32_t TimeValue)
RTC_SetTime (LPC_RTC, RTC_TIMETYPE_MINUTE, 30);
RTC_SetTime (LPC_RTC, RTC_TIMETYPE_HOUR, 11);
RTC_SetTime (LPC_RTC, RTC_TIMETYPE_DAYOFMONTH, 31);
RTC_SetTime (LPC_RTC, RTC_TIMETYPE_MONTH, 8);
RTC_SetTime (LPC_RTC, RTC_TIMETYPE_YEAR, 12);
}

RTC_CntIncrIntConfig (LPC_RTC, RTC_TIMETYPE_SECOND, ENABLE);

/* Enable RTC interrupt */
NVIC_EnableIRQ(RTC_IRQn);

void RTC_IRQHandler(void)
{
uint32_t secval;

/* This is increment counter interrupt*/
if (RTC_GetIntPending(LPC_RTC, RTC_INT_COUNTER_INCREASE))
{
secval = RTC_GetTime (LPC_RTC, RTC_TIMETYPE_SECOND);

/* Send debug information */
_DBG ("Current time: ");
_DBD(RTC_GetTime (LPC_RTC, RTC_TIMETYPE_YEAR)); _DBG ("年");
_DBD(RTC_GetTime (LPC_RTC, RTC_TIMETYPE_MONTH)); _DBG ("月");
_DBD(RTC_GetTime (LPC_RTC, RTC_TIMETYPE_DAYOFMONTH));_DBG ("日");
_DBD(RTC_GetTime (LPC_RTC, RTC_TIMETYPE_HOUR)); _DBG (":");
_DBD(RTC_GetTime (LPC_RTC, RTC_TIMETYPE_MINUTE));_DBG (":");
_DBD(RTC_GetTime (LPC_RTC, RTC_TIMETYPE_SECOND));
_DBG_("");

// Clear pending interrupt
RTC_ClearIntPending(LPC_RTC, RTC_INT_COUNTER_INCREASE);
}
}