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MPU: RTC

Macros

Section titled “Macros”
#define SH7705_RTC (*((rtc_t *)0xfffffec0))
#define SH7305_RTC (*((rtc_t *)0xa413fec0))

Types

Section titled “Types”
typedef struct
{
  byte_union(, uint8_t TENS :4;
  uint8_t ONES :4;
  );
  pad(1);
}
rtc_BCD2_t

sh7705_rtc_t, sh7305_rtc_t - Date and time access, RTC control

typedef volatile struct
{
  uint8_t const R64CNT;
  /* A 64-Hz counter */ pad(1);
  rtc_BCD2_t RSECCNT;
  /* Second count */ rtc_BCD2_t RMINCNT;
  /* Minute count */ rtc_BCD2_t RHRCNT;
  /* Hour count */ uint8_t RWKCNT;
  /* Day of week, must be in [0..6] */ pad(1);
  rtc_BCD2_t RDAYCNT;
  /* Day count */ rtc_BCD2_t RMONCNT;
  /* Month count */ word_union(RYRCNT, /* Year count */ uint THOUSANDS :4;
  uint HUNDREDS :4;
  uint TENS :4;
  uint ONES :4;
  );
  byte_union(RSECAR, /* Second alarm */ uint8_t ENB :1;
  uint8_t TENS :3;
  uint8_t ONES :4;
  );
  pad(1);
  byte_union(RMINAR, /* Minute alarm */ uint8_t ENB :1;
  uint8_t TENS :3;
  uint8_t ONES :4;
  );
  pad(1);
  byte_union(RHRAR, /* Hour alarm */ uint8_t ENB :1;
  uint8_t :1;
  uint8_t TENS :2;
  uint8_t ONES :4;
  );
  pad(1);
  byte_union(RWKAR, /* Day of week alarm */ uint8_t ENB :1;
  uint8_t :3;
  uint8_t :1;
  uint8_t DAY :3;
  );
  pad(1);
  byte_union(RDAYAR, /* Day alarm */ uint8_t ENB :1;
  uint8_t :1;
  uint8_t TENS :2;
  uint8_t ONES :4;
  );
  pad(1);
  byte_union(RMONAR, /* Month alarm */ uint8_t ENB :1;
  uint8_t :1;
  uint8_t TENS :2;
  uint8_t ONES :4;
  );
  pad(1);
  byte_union(RCR1, uint8_t CF :1;
  /* Carry flag */ uint8_t :2;
  uint8_t CIE :1;
  /* Carry interrupt enable */ uint8_t AIE :1;
  /* Alarm interrupt enable */ uint8_t :2;
  uint8_t AF :1;
  /* Alarm flag */ );
  pad(1);
  byte_union(RCR2, uint8_t PEF :1;
  /* Periodic interrupt flag */ uint8_t PES :3;
  /* Periodic interrupt interval */ uint8_t :1;
  uint8_t ADJ :1;
  /* 30-second adjustment */ uint8_t RESET :1;
  /* Reset trigger */ uint8_t START :1;
  /* Start bit */ );
  pad(1);
  word_union(RYRAR, /* Year alarm */ uint16_t THOUSANDS :4;
  uint16_t HUNDREDS :4;
  uint16_t TENS :4;
  uint16_t ONES :4;
  );
  pad(2);
  byte_union(RCR3, /* Control register 3 */ uint8_t ENB :1;
  uint8_t :3;
  uint8_t :4;
  uint8_t :4;
  );
}
rtc_t

Source

Section titled “Source”