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#include "main.h"
#include "clock.h"
#include "timebase.h"
#include "dcf77.h"
#include "lcd.h"
#include <avr/sleep.h>
#include <avr/eeprom.h>
#include <util/delay.h>
#ifdef WHOPR
#include "clock.c"
#include "timebase.c"
#include "dcf77.c"
#include "lcd.c"
#endif
#define B_SW_BACK PINB5
#define B_SW_FRWD PINB6
#define A_OCPL_A PA5
#define A_OCPL_B PA6
#define EE_HOUR 0
#define EE_MINUTE 1
#define EE_CKSUM 2
#define EE_BOOTC 4
static uint8_t ext_hour, ext_minute;
static uint16_t bootcount;
#define WAIT 64
uint8_t waitctr = 0;
enum stepstate {
STEP_INACTIVE = 0,
STEP_ACTIVE,
} stepstate = STEP_INACTIVE;
const char PROGMEM disp[2] = {'_', '+'};
const char PROGMEM status[8] = "oksya+a-";
const char PROGMEM zone[4] = "?12?";
const char PROGMEM cksumfail[] = "cksum fail";
static void puttwo(uint8_t arg)
{
uint8_t b = '0', a = '0' + arg;
while (a > '9')
b++, a -= 10;
lcd_put(b);
lcd_put(a);
}
static void puttime(void)
{
const char * PROGMEM msg;
lcd_line1();
puttwo(time.year);
puttwo(time.month);
puttwo(time.day);
lcd_put(' ');
puttwo(time.hour);
puttwo(time.minute);
puttwo(time.second);
lcd_line2();
lcd_put(time.flags & FLAG_SUMMERTIME_PENDING ? '!' : ' ');
lcd_put(zone[is_cet() + (is_cest() << 1)]);
lcd_put(time.flags & FLAG_LEAP_SECOND ? '!' : ' ');
msg = &status[0];
if (time.year <= 10)
msg = &status[2];
if (~PINB & (1 << B_SW_FRWD))
msg = &status[4];
if (~PINB & (1 << B_SW_BACK))
msg = &status[6];
lcd_puts(msg, 2);
lcd_put(__LPM(&disp[stepstate]));
puttwo(ext_hour);
puttwo(ext_minute);
lcd_put(' ');
puttwo(bootcount / 100);
puttwo(bootcount % 100);
}
static uint8_t setaccel;
static void countfwd(void)
{
cli();
ext_minute++;
if (ext_minute == 60) {
ext_minute = 0;
ext_hour++;
if (ext_hour == 12)
ext_hour = 0;
}
sei();
}
static void step_set(void)
{
if (ext_minute & 1) {
PORTA &= ~(1 << A_OCPL_A);
} else {
PORTA &= ~(1 << A_OCPL_B);
}
}
static void step_end(void)
{
PORTA |= (1 << A_OCPL_A);
PORTA |= (1 << A_OCPL_B);
}
static void perform(void)
{
if (waitctr)
return;
step_end();
if (~PINB & (1 << B_SW_BACK)) {
waitctr = setaccel;
if (setaccel > 3)
setaccel--;
cli();
if (ext_minute)
ext_minute--;
else {
ext_minute = 59;
if (ext_hour)
ext_hour--;
else
ext_hour = 11;
}
sei();
return;
}
if (~PINB & (1 << B_SW_FRWD)) {
waitctr = setaccel;
if (setaccel > 3)
setaccel--;
countfwd();
return;
}
setaccel = WAIT;
if (time.year <= 10)
return;
PORTA &= ~(1 << PA2);
uint8_t hbuf, mbuf, hdelta;
cli();
hbuf = time.hour;
mbuf = time.minute;
sei();
if (hbuf >= 12)
hbuf -= 12;
switch (stepstate) {
case STEP_INACTIVE:
if (hbuf == ext_hour && mbuf <= ext_minute)
break;
hdelta = 11 + ext_hour - hbuf;
while (hdelta >= 12)
hdelta -=12;
if (hdelta < 3)
break;
countfwd();
step_set();
stepstate = STEP_ACTIVE;
waitctr = WAIT;
break;
case STEP_ACTIVE:
stepstate = STEP_INACTIVE;
waitctr = WAIT;
break;
}
}
extern void __vectors(void) __attribute__((noreturn));
__attribute__ ((noreturn))
ISR (ANA_COMP_vect)
{
PORTA = 0xff;
eeprom_write_byte((void *)EE_HOUR, ext_hour);
eeprom_write_byte((void *)EE_MINUTE, ext_minute);
eeprom_write_byte((void *)EE_CKSUM, ext_hour ^ ext_minute ^ 0xff);
do
_delay_ms(100);
while (ACSR & (1 << ACO));
__vectors();
}
int __attribute__((OS_main))
main( void )
{
PORTA = 0xFF; // enable pull ups
PORTB = 0xFF;
DDRA |= (1 << PA4) | (1 << PA3) | (1 << PA2) | (1 << A_OCPL_A) | (1 << A_OCPL_B);
MCUCR = 0;
ACSR = (1 << ACBG) | (1 << ACIS1) | (1 << ACIS0) | (1 << ACIE);
_delay_ms(1);
ACSR |= (1 << ACI);
timebase_init();
lcd_init();
ext_hour = eeprom_read_byte((void *)EE_HOUR);
ext_minute = eeprom_read_byte((void *)EE_MINUTE);
uint8_t ec = eeprom_read_byte((void *)EE_CKSUM);
if ((ec ^ ext_hour ^ ext_minute) != 0xff) {
lcd_puts(cksumfail, sizeof(cksumfail) - 1);
while (1)
;
}
bootcount = eeprom_read_word((void *)EE_BOOTC);
eeprom_write_word((void *)EE_BOOTC, ++bootcount);
/* last pulse may not have been long enough */
step_set();
_delay_ms(1000);
step_end();
sei();
for(;;){
bool do_puttime = false;
scan_dcf77();
#if 1
if( DCF77_PIN & 1<<DCF77 )
PORTA |= 1<< PA3;
else
PORTA &= ~(1<<PA3);
#endif
if( timeflags & 1<<ONE_SECOND ){
timeflags = 0;
clock();
do_puttime = true;
}
if (!waitctr) {
perform();
do_puttime = true;
}
if (do_puttime)
puttime();
/* sleep_enable();
sleep_cpu(); */
}
}
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