xc_drv_rtc.c

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/*-----------------------------------------------------------------------------------
                                       INCLUDE HEADE FILES
 ------------------------------------------------------------------------------------*/
#include "xc6xxx.h"
/*------------------------------------------------------------------------------------
                                          Local Variables
 -------------------------------------------------------------------------------------*/
static volatile uint8_t calibration_flag = 0;
 
/*------------------------------------------------------------------------------------
                                         Global Variables
 -------------------------------------------------------------------------------------*/
 
uint8_t AO_Timer_Callback(uint8_t calib_flag);
 
RTC_Intr_Cb_t RTC_Intr_cb = {
    AO_Timer_Callback, 
    T1_CMR_Callback, 
    T2_CMR_Callback,
    T3_CMR_Callback,
    Sec_Callback,  
    Min_Callback, 
    Hour_Callback, 
    Day_Callback};
 
/*------------------------------------------------------------------------------------
                                         Func Prototype
 -------------------------------------------------------------------------------------*/
 
/*------------------------------------------------------------------------------------
                                            Functions
 -------------------------------------------------------------------------------------*/
void xc_rtc_start(void) { rtc_icr__rtc__cnt_e__setf(RTC_ICR_CNTE_ENABLE); }
 
void xc_rtc_stop(void) { rtc_icr__rtc__cnt_e__setf(RTC_ICR_CNTE_DISABLE); }
 
static void xc_rtc_matchtime_set(RTC_InitCfg_t *rtc_cfg)
{
    if (rtc_cfg->MatchTime.ch == RTC_MATCH_T1) {
        rtc_cmr_one_pack(rtc_cfg->MatchTime.Week, rtc_cfg->MatchTime.Hour,
                         rtc_cfg->MatchTime.Min, rtc_cfg->MatchTime.Sec);
    } else if (rtc_cfg->MatchTime.ch == RTC_MATCH_T2) {
        rtc_cmr_two_pack(rtc_cfg->MatchTime.Week, rtc_cfg->MatchTime.Hour,
                         rtc_cfg->MatchTime.Min, rtc_cfg->MatchTime.Sec);
    } else if (rtc_cfg->MatchTime.ch == RTC_MATCH_T3) {
        rtc_cmr_three_pack(rtc_cfg->MatchTime.Week, rtc_cfg->MatchTime.Hour,
                           rtc_cfg->MatchTime.Min, rtc_cfg->MatchTime.Sec);
    }
}
 
void xc_rtc_date_get(Rtc_DateTypeDef_t *Date) { __rtc_dateget(Date); }
 
void xc_rtc_init(RTC_InitCfg_t *rtc_cfg)
{
    cpr_ctlapbclken_grctl__rtc_pclk_en__setf(ENABLE);
 
    cprao_aon_clken_grctl__rtc_clk_en__setf(ENABLE);
 
    rtc_icr_set(DISABLE);
 
    rtc_raw_limit__setf(xc_clock_lfclk_in_get());
 
    rtc_datelimitSet(rtc_cfg);
    rtc_dateSet(rtc_cfg);
 
    if (rtc_cfg->MatchTimeEnable) {
        xc_rtc_matchtime_set(rtc_cfg);
        rtc_config_matchtimeit(rtc_cfg);
    }
 
    if (rtc_cfg->SecIT_Enable) {
        rtc_config_secit(rtc_cfg);
    }
    if (rtc_cfg->MinIT_Enable) {
        rtc_config_minit(rtc_cfg);
    }
    if (rtc_cfg->HourIT_Enable) {
        rtc_config_hourit(rtc_cfg);
    }
    if (rtc_cfg->DayIT_Enable) {
        rtc_config_dayit(rtc_cfg);
    }
}
 
uint8_t AO_Timer_Callback(uint8_t calib_flag)
{
    calib_flag = 1;
    return calib_flag;
}
 
void RTC_Handler(void)
{
    uint32_t val;
 
    val = rtc_all_intr_ao_get();
 
    if (val & RTC_AO_ALL_INTR_AO_TIMER_INTR_Msk) {
        rtc_ao_timer_ctl__rtc_ao_timer_clr__setf(RTC_AO_TIMER_CTL_AO_TIMER_CLR_SET);
        rtc_ao_timer_ctl__rtc_ao_timer_en__setf(RTC_AO_TIMER_CTL_AO_TIMER_EN_DISABLE);
 
        calibration_flag = RTC_Intr_cb.AO_Timer_Callback(calibration_flag);
    }
 
    val = rtc_isr_eoi_get();
 
    if (val) {
        rtc_isr_eoi_set(val);
 
        if ((val & RTC_ICR_T1E_Msk) == RTC_ICR_T1E_Msk){
            RTC_Intr_cb.T1_CMR_Callback();
        }
       if ((val & RTC_ICR_T2E_Msk) == RTC_ICR_T2E_Msk){
            RTC_Intr_cb.T2_CMR_Callback();
        }
       if ((val & RTC_ICR_T3E_Msk) == RTC_ICR_T3E_Msk){
            RTC_Intr_cb.T3_CMR_Callback();
        }
 
       if ((val & RTC_ICR_DaE_Msk) == RTC_ICR_DaE_Msk){
            RTC_Intr_cb.Day_Callback();
        }
       if ((val & RTC_ICR_HoE_Msk) == RTC_ICR_HoE_Msk){
            RTC_Intr_cb.Hour_Callback();
        }
       if ((val & RTC_ICR_MiE_Msk) == RTC_ICR_MiE_Msk){
            RTC_Intr_cb.Min_Callback();
        }
       if ((val & RTC_ICR_SeE_Msk) == RTC_ICR_SeE_Msk){
            RTC_Intr_cb.Sec_Callback();
        }
    }
}
 
__WEAK uint8_t T1_CMR_Callback(void) { return 0; }
 
__WEAK uint8_t T2_CMR_Callback(void) { return 0; }
 
__WEAK uint8_t T3_CMR_Callback(void) { return 0; }
 
__WEAK uint8_t Sec_Callback(void) { return 0; }
 
__WEAK uint8_t Min_Callback(void) { return 0; }
 
__WEAK uint8_t Hour_Callback(void) { return 0; }
 
__WEAK uint8_t Day_Callback(void) { return 0; }
 
/***********************************************************************************
 *****************************     RC32 Calibration
 ******************************
 ***********************************************************************************/
uint8_t xc_rc32k_count_calib()
{
    volatile int32_t hw_timeout = 10000;
    uint32_t val;
    float freq = 0.0;
 
    rtc_ao_timer_ctl__rtc_ao_timer_value__setf(32);
    rtc_ao_timer_ctl__rtc_freq_timer_en__setf(1);
 
    while ((!(calibration_flag)) && (hw_timeout > 0)) {
        __nop();
        hw_timeout--;
    }
 
    if (hw_timeout < 0) {
        return 1;
    }
 
    val  = rtc_freq_32k_timer_val_get();
    val *= (32000000.0f / xc_clock_hfclk_in_get());
 
    rtc_ao_timer_ctl__rtc_ao_timer_en__setf(DISABLE);
    rtc_ao_timer_ctl__rtc_ao_timer_clr__setf(ENABLE);
 
    freq = (float)(15625.0f / (float)val) * 32768.0f;
    DEBUG("Calib freq: %u\n", (uint32_t)freq);
 
    rtc_raw_limit__setf((uint32_t)freq);
 
    return 0;
}