void rtc_settimereg(unsigned char r, unsigned char v)
{
unsigned char ctlb = rtc_readreg(DS_REG_CTLB);
rtc_writereg(DS_REG_CTLB, ctlb | DS_CTLB_SET);
rtc_writereg(r, byte_to_bcd(v));
rtc_writereg(DS_REG_CTLB, ctlb & ~DS_CTLB_SET);
}
static int
rtc_gettime_ymdhms(todr_chip_handle_t handle, struct clock_ymdhms *dt)
{
struct rtc_softc *sc;
int i, year;
bool read_okay;
uint8_t rtc_registers[NUM_RTC_REGS];
sc = handle->cookie;
/* read rtc registers */
read_okay = false;
while (!read_okay) {
read_okay = true;
for (i = 0; i < NUM_RTC_REGS; i++)
rtc_registers[i] = rtc_readreg(sc, i);
for (i = 0; i < NUM_RTC_REGS; i++)
if (rtc_registers[i] != rtc_readreg(sc, i))
read_okay = false;
}
#define rtc_to_decimal(a,b) (rtc_registers[a] * 10 + rtc_registers[b])
dt->dt_sec = rtc_to_decimal(1, 0);
dt->dt_min = rtc_to_decimal(3, 2);
dt->dt_hour = (rtc_registers[5] & RTC_REG5_HOUR) * 10 +
rtc_registers[4];
dt->dt_day = rtc_to_decimal(8, 7);
dt->dt_mon = rtc_to_decimal(10, 9);
year = rtc_to_decimal(12, 11) + RTC_BASE_YEAR;
if (year < POSIX_BASE_YEAR)
year += 100;
dt->dt_year = year;
#undef rtc_to_decimal
return 0;
}
unsigned char rtc_gettimereg(unsigned char r)
{
return bcd_to_byte(rtc_readreg(r));
}
