/**
* @brief Entry point to start execution at
*
* This is the main entry point where execution will start. It initializes the
* hardware and enters an infinite loop handling any upcoming events not yet
* covered.
*
* @note This function makes use of the attribute "OS_main". For details
* refer to [1].
*
* [1]: http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
*
* @return Should never return anything
*/
__attribute__((OS_main)) int main()
{
uart_init();
log_main("Init...\n");
preferences_init();
#if (ENABLE_DCF_SUPPORT == 1)
dcf77_init();
#endif
display_init();
datetime_init();
ldr_init();
pwm_init();
irmp_init();
timer_init();
user_init();
sei();
pwm_on();
log_main("Init finished\n");
while (1) {
brightness_handle();
datetime_handle();
handle_ir_code();
#if (ENABLE_UART_PROTOCOL == 1)
uart_protocol_handle();
#endif /* (ENABLE_UART_PROTOCOL == 1) */
#if (ENABLE_DCF_SUPPORT == 1)
datetime_t dt;
// TODO: Make sure dcf77_getDateTime() validates its result
if (dcf77_get_datetime(&dt)) {
datetime_set(&dt);
}
#endif
}
}
/*---------------------------------------------------------------------------------------------------------------------------------------------------
* MAIN: main routine
*---------------------------------------------------------------------------------------------------------------------------------------------------
*/
//int main(void) __attribute__((noreturn)); /* saves some Bytes but produces warning */
int
main (void)
{
static DATETIME datetime;
uart_init(); // initialize uart
log_main("Init...\n");
wcEeprom_init();
# if (DCF_PRESENT == 1)
dcf77_init (); // initialize dcf77
# endif
display_init (); // initialize display
{ // local to save stack
uint8_t i2c_errorcode;
uint8_t i2c_status;
if (! i2c_rtc_init (&i2c_errorcode, &i2c_status)) // initialize rtc
{
log_main("RTC init failed\n");
// TODO: error handling
}
}
ldr_init (); // initialize ldr
pwm_init (); // initialize pwm
irmp_init (); // initialize irmp
timer_init (); // initialize timer
user_init();
sei (); // enable interrupts
pwm_on (); // switch on pwm
//pwm_set_base_brightness_step(MAX_PWM_STEPS-1); /// @todo remove if ldr stuff is working
log_main("Init finished\n");
for (;;)
{
handle_brightness ();
handle_datetime (&datetime); // check & display new time, if necessary
handle_ir_code (); // handle ir user interaction
# if (DCF_PRESENT == 1)
if (dcf77_getDateTime (&datetime)) // handle dcf77 examination (enable_dcf77_ISR must be TRUE to enable analysis)
{
i2c_rtc_write (&datetime);
soft_seconds = datetime.ss;
user_setNewTime (&datetime);
}
# endif /** (DCF_PRESENT == 1) */
}
}
int main(int argc, const char** argv)
{
LogWriter logWriter;
// argv[1] = path to shared ipc buffer
if (argc < 2)
{
printf("[log_main] No IPC path provided, aborting\n");
return 1;
}
basic_preinit(B(&logWriter));
return log_main(&logWriter, argv[1]);
}
/*---------------------------------------------------------------------------------------------------------------------------------------------------
* MAIN: check date & time
*
* This function uses a softclock to avoid extensive calls of i2c_rtc_read() by
* reading the RTC only READ_DATETIME_INTERVAL seconds.
*
* fm: This softclock algorithm adjusts itself:
* - if the RC oscillator is too slow, handle_datetime() will call i2c_rtc_read() every second in the last part
* of a minute in order to reach the next full minute as close as possible.
* - if the RC oscillator is too fast, the softclock will be slowdowned by updating the softclock every
* READ_DATETIME_INTERVAL - softclock_too_fast_seconds
*---------------------------------------------------------------------------------------------------------------------------------------------------
*/
static void
handle_datetime (DATETIME * datetimep)
{
static uint8_t last_hour = 0xff; // value of last hour
static uint8_t last_minute = 0xff; // value of minutes evaluated last call
static uint8_t last_seconds = 0xff; // value of seconds evaluated last call
static uint8_t next_read_seconds = 0; // time in seconds when to read RTC again
uint8_t softclock_too_fast_seconds = 0; // if softclock is too fast, store difference of seconds
uint8_t rtc;
if (last_seconds != soft_seconds) // time changed?
{ // yes...
if (soft_seconds >= next_read_seconds) // next time (to read RTC) reached?
{ // yes...
rtc = i2c_rtc_read (datetimep); // read RTC now!
}
else
{ // next time not reached...
datetimep->ss = soft_seconds; // update only seconds
rtc = TRUE;
}
if (rtc)
{
if (last_minute != datetimep->mm) // minute change?
{ // yes...
user_setNewTime (datetimep); // display current time
last_minute = datetimep->mm; // store current minute as last minute
if (last_hour != datetimep->hh)
{
# if (DCF_PRESENT == 1)
enable_dcf77_ISR = TRUE; // enable DCF77 every hour
# endif /** (DCF_PRESENT == 1) */
last_hour = datetimep->hh; // store current hour as last hour
}
}
if (last_seconds != 0xff && soft_seconds > datetimep->ss)
{
softclock_too_fast_seconds = soft_seconds - datetimep->ss;
}
last_seconds = soft_seconds = datetimep->ss; // store actual value of seconds for softclock
if (softclock_too_fast_seconds > 0)
{ // set next time we have to read RTC again (with correction)
next_read_seconds = soft_seconds + READ_DATETIME_INTERVAL - softclock_too_fast_seconds;
}
else
{
next_read_seconds = soft_seconds + READ_DATETIME_INTERVAL; // set next time we have to read RTC again
}
if (next_read_seconds >= 60) // we have to read it in the next minute...
{
next_read_seconds = 0; // reset next time: read at next full minute
}
}
else
{
log_main("RTC error\n");
}
}
else
{
rtc = TRUE; // time not changed, do nothing
}
}
