void
clock_set_time(timestamp_t new_sync_timestamp)
{
/* The clock was synced */
if (sync_timestamp)
{
delta = new_sync_timestamp - sync_timestamp;
#if defined(CLOCK_NTP_ADJUST_SUPPORT) && !defined(CLOCK_CPU_SUPPORT)
NTPADJDEBUG("sync timestamp delta is %d\n", delta);
if (delta < -300 || delta > 300)
NTPADJDEBUG("eeek, delta too large. " "not adjusting.\n");
else if (sync_timestamp != clock_timestamp)
NTPADJDEBUG("our clock is not up with ntp clock.\n");
else if (NTP_RESYNC_PERIOD == -delta)
NTPADJDEBUG("-delta equals resync period, eeek!? "
"clock isn't running at all.\n");
else
{
uint32_t new_value = TC1_COUNTER_COMPARE;
new_value *= NTP_RESYNC_PERIOD;
new_value /= NTP_RESYNC_PERIOD + delta;
NTPADJDEBUG("new OCR1A value %d\n", new_value);
TC1_COUNTER_COMPARE = new_value;
}
#endif /* CLOCK_NTP_ADJUST_SUPPORT */
}
sync_timestamp = new_sync_timestamp;
n_sync_timestamp = new_sync_timestamp;
n_sync_tick = TIMER_8_AS_1_COUNTER_CURRENT;
#if defined(CLOCK_DATETIME_SUPPORT) || defined(DCF77_SUPPORT) || defined(CLOCK_DATE_SUPPORT) || defined(CLOCK_TIME_SUPPORT)
clock_reset_dst_change();
#endif
/* Allow the clock to jump forward, but not to go backward
* except the time difference is greater than 5 minutes */
if (sync_timestamp > clock_timestamp ||
(clock_timestamp - sync_timestamp) > 300)
clock_timestamp = sync_timestamp;
#ifdef I2C_DS13X7_SUPPORT
i2c_ds13x7_sync(sync_timestamp);
#endif
#ifdef I2C_PCF8583_SUPPORT
i2c_pcf8583_set(sync_timestamp);
#endif
#ifdef NTP_SUPPORT
ntp_timer = NTP_RESYNC_PERIOD;
#endif
}
void
clock_set_time(uint32_t new_sync_timestamp)
{
#ifdef CLOCK_NTP_ADJUST_SUPPORT
/* The clock was synced */
if (sync_timestamp) {
delta = new_sync_timestamp - sync_timestamp;
NTPADJDEBUG ("sync timestamp delta is %d\n", delta);
if (delta < -300 || delta > 300)
NTPADJDEBUG ("eeek, delta too large. "
"not adjusting.\n");
else if (sync_timestamp != timestamp)
NTPADJDEBUG ("our clock is not up with ntp clock.\n");
else if (NTP_RESYNC_PERIOD == -delta)
NTPADJDEBUG ("-delta equals resync period, eeek!? "
"clock isn't running at all.\n");
else {
uint32_t new_value = OCR1A;
new_value *= NTP_RESYNC_PERIOD;
new_value /= NTP_RESYNC_PERIOD + delta;
NTPADJDEBUG ("new OCR1A value %d\n", new_value);
OCR1A = new_value;
}
}
#endif /* CLOCK_NTP_ADJUST_SUPPORT */
sync_timestamp = new_sync_timestamp;
n_sync_timestamp = new_sync_timestamp;
n_sync_tick = TCNT2;
/* Allow the clock to jump forward, but not to go backward
* except the time difference is greater than 5 minutes */
if (sync_timestamp > timestamp || (timestamp - sync_timestamp) > 300)
timestamp = sync_timestamp;
#ifdef WHM_SUPPORT
if (startup_timestamp == 0)
startup_timestamp = sync_timestamp;
#endif
#ifdef I2C_DS1337_SUPPORT
i2c_ds1337_sync(sync_timestamp);
#endif
#ifdef NTP_SUPPORT
ntp_timer = NTP_RESYNC_PERIOD;
#endif
}
void
periodic_init (void)
{
CLOCK_SET_PRESCALER;
#ifdef CLOCK_CPU_SUPPORT
/* init timer1 to expire after ~20ms, with Normal */
TC1_MODE_OFF;
TC1_COUNTER_CURRENT = 65536 - CLOCK_SECONDS;
TC1_COUNTER_COMPARE = 65536 - CLOCK_SECONDS + CLOCK_TICKS;
TC1_INT_COMPARE_ON;
TC1_INT_OVERFLOW_ON;
#else
#ifdef FREQCOUNT_SUPPORT
/* init timer1 to run with full cpu frequency, normal mode,
compare and overflow int active */
TC1_PRESCALER_1;
freqcount_init();
TC1_INT_COMPARE_ON;
TC1_INT_OVERFLOW_ON;
#else
/* init timer1 to expire after ~20ms, with CTC enabled */
TC1_MODE_CTC;
TC1_COUNTER_COMPARE = (F_CPU / CLOCK_PRESCALER / HZ) - 1;
TC1_INT_COMPARE_ON;
NTPADJDEBUG ("configured OCR1A to %d\n", TC1_COUNTER_COMPARE);
#endif
#endif
}
void periodic_init(void)
{
/* init timer1 to expire after ~20ms, with CTC enabled */
TCCR1B = _BV(WGM12) | _BV(CS12) | _BV(CS10);
OCR1A = (F_CPU/1024/50);
NTPADJDEBUG ("configured OCR1A to %d\n", OCR1A);
}
