static void ds1216e_latch_regs(rtc_ds1216e_t *context)
{
time_t latch = (context->inactive) ? context->latch : rtc_get_latch(context->offset);
context->clock_regs[DS1216E_REGISTER_CENTISECONDS] = rtc_get_centisecond(1);
context->clock_regs[DS1216E_REGISTER_SECONDS] = rtc_get_second(latch, 1);
context->clock_regs[DS1216E_REGISTER_MINUTES] = rtc_get_minute(latch, 1);
context->clock_regs[DS1216E_REGISTER_HOURS] = (context->hours12) ? 0x80 : 0;
if (context->hours12) {
context->clock_regs[DS1216E_REGISTER_HOURS] |= rtc_get_hour_am_pm(latch, 1);
} else {
context->clock_regs[DS1216E_REGISTER_HOURS] |= rtc_get_hour(latch, 1);
}
context->clock_regs[DS1216E_REGISTER_WEEKDAYS] = (context->inactive) ? 0x20 : 0;
context->clock_regs[DS1216E_REGISTER_WEEKDAYS] |= (context->reset) ? 0x10 : 0;
context->clock_regs[DS1216E_REGISTER_WEEKDAYS] |= ((rtc_get_weekday(latch) - 1) % 7) + 1;
context->clock_regs[DS1216E_REGISTER_MONTHDAYS] = rtc_get_day_of_month(latch, 1);
context->clock_regs[DS1216E_REGISTER_MONTHS] = rtc_get_month(latch, 1);
context->clock_regs[DS1216E_REGISTER_YEARS] = rtc_get_year(latch, 1);
}
static void pcf8583_i2c_start(rtc_pcf8583_t *context)
{
BYTE tmp;
time_t latch = (context->clock_halt) ? context->clock_halt_latch : rtc_get_latch(context->offset);
int i;
context->clock_regs_for_read[PCF8583_REG_CONTROL] = context->clock_regs[PCF8583_REG_CONTROL];
context->clock_regs_for_read[PCF8583_REG_100TH_SECONDS] = rtc_get_centisecond(1);
context->clock_regs_for_read[PCF8583_REG_SECONDS] = rtc_get_second(latch, 1);
context->clock_regs_for_read[PCF8583_REG_MINUTES] = rtc_get_minute(latch, 1);
tmp = context->am_pm << 7;
if (context->am_pm) {
tmp |= rtc_get_hour_am_pm(latch, 1);
if (tmp & 0x20) {
tmp &= 0xdf;
tmp |= 0x40;
}
} else {
tmp |= rtc_get_hour(latch, 1);
}
context->clock_regs_for_read[PCF8583_REG_HOURS] = tmp;
tmp = rtc_get_year(latch, 1);
tmp &= 3;
tmp <<= 6;
tmp |= rtc_get_day_of_month(latch, 1);
context->clock_regs_for_read[PCF8583_REG_YEARS_MONTH_DAYS] = tmp;
tmp = rtc_get_weekday(latch) + 1;
tmp &= 7;
tmp <<= 5;
tmp |= rtc_get_month(latch, 1);
context->clock_regs_for_read[PCF8583_REG_WEEK_DAYS_MONTHS] = tmp;
context->clock_regs_for_read[PCF8583_REG_TIMER_DAYS] = 0;
for (i = PCF8583_REG_ALARM_CONTROL; i <= PCF8583_REG_TIMER_ALARM; ++i) {
context->clock_regs_for_read[i] = context->clock_regs[i];
}
if (context->read_bit_shift) {
make_read_register_train(context);
}
}
BYTE rtc72421_read(rtc_72421_t *context, BYTE address)
{
BYTE retval = 0;
time_t latch = (context->stop) ? context->latch : rtc_get_latch(context->offset);
switch (address & 0xf) {
case RTC72421_REGISTER_SECONDS:
retval = rtc_get_second(latch, 0);
retval %= 10;
break;
case RTC72421_REGISTER_10SECONDS:
retval = rtc_get_second(latch, 0);
retval /= 10;
break;
case RTC72421_REGISTER_MINUTES:
retval = rtc_get_minute(latch, 0);
retval %= 10;
break;
case RTC72421_REGISTER_10MINUTES:
retval = rtc_get_minute(latch, 0);
retval /= 10;
break;
case RTC72421_REGISTER_HOURS:
if (context->hour24) {
retval = rtc_get_hour(latch, 0);
} else {
retval = rtc_get_hour_am_pm(latch, 0);
retval &= 0x1f;
}
retval %= 10;
break;
case RTC72421_REGISTER_10HOURS:
if (context->hour24) {
retval = rtc_get_hour(latch, 0);
retval /= 10;
retval |= 8;
} else {
retval = rtc_get_hour_am_pm(latch, 0);
if (retval > 23) {
retval = (retval - 32) / 10;
retval |= 4;
} else {
retval /= 10;
}
}
break;
case RTC72421_REGISTER_WEEKDAYS:
retval = rtc_get_weekday(latch) - 1;
if (retval > 6) {
retval = 6;
}
break;
case RTC72421_REGISTER_MONTHDAYS:
retval = rtc_get_day_of_month(latch, 0);
retval %= 10;
break;
case RTC72421_REGISTER_10MONTHDAYS:
retval = rtc_get_day_of_month(latch, 0);
retval /= 10;
break;
case RTC72421_REGISTER_MONTHS:
retval = rtc_get_month(latch, 0);
retval %= 10;
break;
case RTC72421_REGISTER_10MONTHS:
retval = rtc_get_month(latch, 0);
retval /= 10;
break;
case RTC72421_REGISTER_YEARS:
retval = rtc_get_year(latch, 0);
retval %= 10;
break;
case RTC72421_REGISTER_10YEARS:
retval = rtc_get_year(latch, 0);
retval /= 10;
break;
case RTC72421_REGISTER_CTRL2:
retval = context->hour24 ? 2 : 0;
retval |= context->stop ? 1 : 0;
break;
}
return retval;
}
BYTE rtc58321a_read(rtc_58321a_t *context)
{
BYTE retval = 0;
time_t latch = (context->stop) ? context->latch : rtc_get_latch(context->offset[0]);
switch (context->address) {
case RTC58321A_REGISTER_SECONDS:
retval = rtc_get_second(latch, 0);
retval %= 10;
break;
case RTC58321A_REGISTER_10SECONDS:
retval = rtc_get_second(latch, 0);
retval /= 10;
break;
case RTC58321A_REGISTER_MINUTES:
retval = rtc_get_minute(latch, 0);
retval %= 10;
break;
case RTC58321A_REGISTER_10MINUTES:
retval = rtc_get_minute(latch, 0);
retval /= 10;
break;
case RTC58321A_REGISTER_HOURS:
if (context->hour24) {
retval = rtc_get_hour(latch, 0);
} else {
retval = rtc_get_hour_am_pm(latch, 0);
retval &= 0x1f;
}
retval %= 10;
break;
case RTC58321A_REGISTER_10HOURS:
if (context->hour24) {
retval = rtc_get_hour(latch, 0);
retval /= 10;
retval |= 0x80;
} else {
retval = rtc_get_hour_am_pm(latch, 0);
if (retval > 23) {
retval = (retval - 32) / 10;
retval |= 4;
} else {
retval /= 10;
}
}
break;
case RTC58321A_REGISTER_WEEKDAYS:
retval = rtc_get_weekday(latch);
break;
case RTC58321A_REGISTER_MONTHDAYS:
retval = rtc_get_day_of_month(latch, 0);
retval %= 10;
break;
case RTC58321A_REGISTER_10MONTHDAYS:
retval = rtc_get_day_of_month(latch, 0);
retval /= 10;
/* TODO: leapyear calculation */
break;
case RTC58321A_REGISTER_MONTHS:
retval = rtc_get_month(latch, 0);
retval %= 10;
break;
case RTC58321A_REGISTER_10MONTHS:
retval = rtc_get_month(latch, 0);
retval /= 10;
break;
case RTC58321A_REGISTER_YEARS:
retval = rtc_get_year(latch, 0);
retval %= 10;
break;
case RTC58321A_REGISTER_10YEARS:
retval = rtc_get_year(latch, 0);
retval /= 10;
break;
}
return retval;
}