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iv.c
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iv.c
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/***************************************************************************
Ice Tube Clock with GPS firmware July 22, 2010
(c) 2010 Limor Fried / Adafruit Industries
GPS Capability added by Devlin Thyne
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include <avr/io.h>
#include <string.h>
#include <avr/interrupt.h> // Interrupts and timers
#include <util/delay.h> // Blocking delay functions
#include <avr/pgmspace.h> // So we can store the 'font table' in ROM
#include <avr/eeprom.h> // Date/time/pref backup in permanent EEPROM
#include <avr/wdt.h> // Watchdog timer to repair lockups
#include <stdlib.h>
#include "iv.h"
#include "util.h"
#include "fonttable.h"
uint8_t region = REGION_US;
// These variables store the current time.
volatile int8_t time_s, time_m, time_h;
// ... and current date
volatile int8_t date_m, date_d, date_y;
// how loud is the speaker supposed to be?
volatile uint8_t volume;
// whether the alarm is on, going off, and alarm time
volatile uint8_t alarm_on, alarming, alarm_h, alarm_m;
// what is being displayed on the screen? (eg time, date, menu...)
volatile uint8_t displaymode;
// are we in low power sleep mode?
volatile uint8_t sleepmode = 0;
volatile uint8_t timeunknown = 0; // MEME
volatile uint8_t restored = 0;
// String buffer for processing GPS data:
char strBuffer[BUFFERSIZE];
uint8_t intBufferStatus = 0;
// Variables for the timezone offset if using GPS.
int8_t intTimeZoneHour = -6; //Because Colorado is my time zone...
uint8_t intTimeZoneMin = 0;
// Our display buffer, which is updated to show the time/date/etc
// and is multiplexed onto the tube
uint8_t display[DISPLAYSIZE]; // stores segments, not values!
uint8_t currdigit = 0; // which digit we are currently multiplexing
// This table allow us to index between what digit we want to light up
// and what the pin number is on the MAX6921 see the .h for values.
// Stored in ROM (PROGMEM) to save RAM
const uint8_t digittable[] PROGMEM = {
DIG_9, DIG_8, DIG_7, DIG_6, DIG_5, DIG_4, DIG_3, DIG_2, DIG_1
};
PGM_P digittable_p PROGMEM = digittable;
// This table allow us to index between what segment we want to light up
// and what the pin number is on the MAX6921 see the .h for values.
// Stored in ROM (PROGMEM) to save RAM
const uint8_t segmenttable[] PROGMEM = {
SEG_H, SEG_G, SEG_F, SEG_E, SEG_D, SEG_C, SEG_B, SEG_A
};
PGM_P segmenttable_p PROGMEM = segmenttable;
// muxdiv and MUX_DIVIDER divides down a high speed interrupt (31.25KHz)
// down so that we can refresh at about 100Hz (31.25KHz / 300)
// We refresh the entire display at 100Hz so each digit is updated
// 100Hz/DISPLAYSIZE
uint16_t muxdiv = 0;
#define MUX_DIVIDER (300 / DISPLAYSIZE)
// Likewise divides 100Hz down to 1Hz for the alarm beeping
uint16_t alarmdiv = 0;
#define ALARM_DIVIDER 100
// How long we have been snoozing
uint16_t snoozetimer = 0;
// We have a non-blocking delay function, milliseconds is updated by
// an interrupt
volatile uint16_t milliseconds = 0;
void delayms(uint16_t ms) {
sei();
milliseconds = 0;
while (milliseconds < ms);
}
// When the alarm is going off, pressing a button turns on snooze mode
// this sets the snoozetimer off in MAXSNOOZE seconds - which turns on
// the alarm again
void setsnooze(void) {
//snoozetimer = eeprom_read_byte((uint8_t *)EE_SNOOZE);
//snoozetimer *= 60; // convert minutes to seconds
snoozetimer = MAXSNOOZE;
DEBUGP("snooze");
display_str("snoozing");
displaymode = SHOW_SNOOZE;
delayms(1000);
displaymode = SHOW_TIME;
}
// we reset the watchdog timer
void kickthedog(void) {
wdt_reset();
}
// called @ (F_CPU/256) = ~30khz (31.25 khz)
SIGNAL (SIG_OVERFLOW0) {
// allow other interrupts to go off while we're doing display updates
sei();
// kick the dog
kickthedog();
// divide down to 100Hz * digits
muxdiv++;
if (muxdiv < MUX_DIVIDER)
return;
muxdiv = 0;
// now at 100Hz * digits
// ok its not really 1ms but its like within 10% :)
milliseconds++;
// Cycle through each digit in the display
if (currdigit >= DISPLAYSIZE)
currdigit = 0;
// Set the current display's segments
setdisplay(currdigit, display[currdigit]);
// and go to the next
currdigit++;
// check if we should have the alarm on
if (alarming && !snoozetimer) {
alarmdiv++;
if (alarmdiv > ALARM_DIVIDER) {
alarmdiv = 0;
} else {
return;
}
// This part only gets reached at 1Hz
// This sets the buzzer frequency
ICR1 = 250;
OCR1A = OCR1B = ICR1/2;
// ok alarm is ringing!
if (alarming & 0xF0) { // top bit indicates pulsing alarm state
alarming &= ~0xF0;
TCCR1B &= ~_BV(CS11); // turn buzzer off!
} else {
alarming |= 0xF0;
TCCR1B |= _BV(CS11); // turn buzzer on!
}
}
}
// We use the pin change interrupts to detect when buttons are pressed
// These store the current button states for all 3 buttons. We can
// then query whether the buttons are pressed and released or pressed
// This allows for 'high speed incrementing' when setting the time
volatile uint8_t last_buttonstate = 0, just_pressed = 0, pressed = 0;
volatile uint8_t buttonholdcounter = 0;
// This interrupt detects switches 1 and 3
SIGNAL(SIG_PIN_CHANGE2) {
PCICR = 0;
// allow interrupts while we're doing this
sei();
if (! (PIND & _BV(BUTTON1))) {
// button1 is pressed
if (! (last_buttonstate & 0x1)) { // was not pressed before
delayms(10); // debounce
if (PIND & _BV(BUTTON1)) { // filter out bounce
PCICR = _BV(PCIE0) | _BV(PCIE2);
return;
}
tick(); // make a noise
// check if we will snag this button press for snoozing
if (alarming) {
// turn on snooze
setsnooze();
PCICR = _BV(PCIE0) | _BV(PCIE2);
return;
}
last_buttonstate |= 0x1;
just_pressed |= 0x1;
DEBUGP("b1");
}
} else {
last_buttonstate &= ~0x1;
}
if (! (PIND & _BV(BUTTON3))) {
// button3 is pressed
if (! (last_buttonstate & 0x4)) { // was not pressed before
delayms(10); // debounce
if (PIND & _BV(BUTTON3)) { // filter out bounces
PCICR = _BV(PCIE0) | _BV(PCIE2);
return;
}
buttonholdcounter = 2; // see if we're press-and-holding
while (buttonholdcounter) {
if (PIND & _BV(BUTTON3)) { // released
tick(); // make a noise
last_buttonstate &= ~0x4;
// check if we will snag this button press for snoozing
if (alarming) {
// turn on snooze
setsnooze();
PCICR = _BV(PCIE0) | _BV(PCIE2);
return;
}
DEBUGP("b3");
just_pressed |= 0x4;
PCICR = _BV(PCIE0) | _BV(PCIE2);
return;
}
}
last_buttonstate |= 0x4;
pressed |= 0x4; // held down
}
} else {
pressed = 0; // button released
last_buttonstate &= ~0x4;
}
PCICR = _BV(PCIE0) | _BV(PCIE2);
}
// Just button #2
SIGNAL(SIG_PIN_CHANGE0) {
PCICR = 0;
sei();
if (! (PINB & _BV(BUTTON2))) {
// button2 is pressed
if (! (last_buttonstate & 0x2)) { // was not pressed before
delayms(10); // debounce
if (PINB & _BV(BUTTON2)) { // filter out bounces
PCICR = _BV(PCIE0) | _BV(PCIE2);
return;
}
tick(); // make a noise
// check if we will snag this button press for snoozing
if (alarming) {
setsnooze(); // turn on snooze
PCICR = _BV(PCIE0) | _BV(PCIE2);
return;
}
last_buttonstate |= 0x2;
just_pressed |= 0x2;
DEBUGP("b2");
}
} else {
last_buttonstate &= ~0x2;
}
PCICR = _BV(PCIE0) | _BV(PCIE2);
}
// This variable keeps track of whether we have not pressed any
// buttons in a few seconds, and turns off the menu display
volatile uint8_t timeoutcounter = 0;
// this goes off once a second
SIGNAL (TIMER2_OVF_vect) {
CLKPR = _BV(CLKPCE); //MEME
CLKPR = 0;
time_s++; // one second has gone by
fix_time();
// If we're in low power mode we should get out now since the display is off
if (sleepmode)
return;
if (displaymode == SHOW_TIME) {
if (timeunknown && (time_s % 2)) {
display_str(" ");
} else {
display_time(time_h, time_m, time_s);
}
if (alarm_on)
display[0] |= 0x2;
else
display[0] &= ~0x2;
}
check_alarm(time_h, time_m, time_s);
if (timeoutcounter)
timeoutcounter--;
if (buttonholdcounter)
buttonholdcounter--;
if (snoozetimer) {
snoozetimer--;
if (snoozetimer % 2)
display[0] |= 0x2;
else
display[0] &= ~0x2;
}
}
SIGNAL(SIG_INTERRUPT0) {
uart_putchar('i');
uint8_t x = ALARM_PIN & _BV(ALARM);
sei();
delayms(10); // wait for debouncing
if (x != (ALARM_PIN & _BV(ALARM)))
return;
setalarmstate();
}
SIGNAL(SIG_COMPARATOR) {
//DEBUGP("COMP");
if (ACSR & _BV(ACO)) {
//DEBUGP("HIGH");
if (!sleepmode) {
VFDSWITCH_PORT |= _BV(VFDSWITCH); // turn off display
VFDCLK_PORT &= ~_BV(VFDCLK) & ~_BV(VFDDATA); // no power to vfdchip
BOOST_PORT &= ~_BV(BOOST); // pull boost fet low
SPCR &= ~_BV(SPE); // turn off spi
if (restored) {
eeprom_write_byte((uint8_t *)EE_MIN, time_m);
eeprom_write_byte((uint8_t *)EE_SEC, time_s);
}
DEBUGP("z");
TCCR0B = 0; // no boost
volume = 0; // low power buzzer
PCICR = 0; // ignore buttons
app_start();
}
} else {
//DEBUGP("LOW");
if (sleepmode) {
if (restored) {
eeprom_write_byte((uint8_t *)EE_MIN, time_m);
eeprom_write_byte((uint8_t *)EE_SEC, time_s);
}
DEBUGP("WAKERESET");
app_start();
}
}
}
/*********************** Main app **********/
uint32_t t;
void gotosleep(void) {
// battery
//if (sleepmode) //already asleep?
// return;
//DEBUGP("sleeptime");
sleepmode = 1;
VFDSWITCH_PORT |= _BV(VFDSWITCH); // turn off display
SPCR &= ~_BV(SPE); // turn off spi
VFDCLK_PORT &= ~_BV(VFDCLK) & ~_BV(VFDDATA); // no power to vfdchip
BOOST_PORT &= ~_BV(BOOST); // pull boost fet low
TCCR0B = 0; // no boost
volume = 0; // low power buzzer
PCICR = 0; // ignore buttons
// sleep time!
//beep(3520, 1);
//beep(1760, 1);
//beep(880, 1);
// turn beeper off
PORTB &= ~_BV(SPK1) & ~_BV(SPK2);
// turn off pullups
PORTD &= ~_BV(BUTTON1) & ~_BV(BUTTON3);
PORTB &= ~_BV(BUTTON2);
DDRD &= ~_BV(BUTTON1) & ~_BV(BUTTON3);
DDRB &= ~_BV(BUTTON2);
ALARM_PORT &= ~_BV(ALARM);
ALARM_DDR &= ~_BV(ALARM);
// reduce the clock speed
CLKPR = _BV(CLKPCE);
CLKPR = _BV(CLKPS3);
// PPR |= _BV(PRUSART0) | _BV(PRADC) | _BV(PRSPI) | _BV(PRTIM1) | _BV(PRTIM0) | _BV(PRTWI);
PORTC |= _BV(4); // sleep signal
SMCR |= _BV(SM1) | _BV(SM0) | _BV(SE); // sleep mode
asm("sleep");
CLKPR = _BV(CLKPCE);
CLKPR = 0;
PORTC &= ~_BV(4);
}
void wakeup(void) {
if (!sleepmode)
return;
CLKPR = _BV(CLKPCE);
CLKPR = 0;
DEBUGP("waketime");
sleepmode = 0;
// plugged in
// wait to verify
_delay_ms(20);
if (ACSR & _BV(ACO))
return;
// turn on pullups
initbuttons();
// turn on boost
boost_init(eeprom_read_byte((uint8_t *)EE_BRIGHT));
// turn on vfd control
vfd_init();
// turn on display
VFDSWITCH_PORT &= ~_BV(VFDSWITCH);
VFDBLANK_PORT &= ~_BV(VFDBLANK);
volume = eeprom_read_byte((uint8_t *)EE_VOLUME); // reset
speaker_init();
kickthedog();
setalarmstate();
// wake up sound
beep(880, 1);
beep(1760, 1);
beep(3520, 1);
kickthedog();
}
void initbuttons(void) {
DDRB = _BV(VFDCLK) | _BV(VFDDATA) | _BV(SPK1) | _BV(SPK2);
DDRD = _BV(BOOST) | _BV(VFDSWITCH);
DDRC = _BV(VFDLOAD) | _BV(VFDBLANK) | _BV(4);
PORTD = _BV(BUTTON1) | _BV(BUTTON3) | _BV(ALARM);
PORTB = _BV(BUTTON2);
PCICR = _BV(PCIE0) | _BV(PCIE2);
PCMSK0 = _BV(PCINT0);
PCMSK2 = _BV(PCINT21) | _BV(PCINT20);
}
int main(void) {
// uint8_t i;
uint8_t mcustate;
// turn boost off
TCCR0B = 0;
BOOST_DDR |= _BV(BOOST);
BOOST_PORT &= ~_BV(BOOST); // pull boost fet low
// check if we were reset
mcustate = MCUSR;
MCUSR = 0;
uart_putw_hex(mcustate);
wdt_disable();
// now turn it back on... 2 second time out
//WDTCSR |= _BV(WDP0) | _BV(WDP1) | _BV(WDP2);
//WDTCSR = _BV(WDE);
wdt_enable(WDTO_2S);
kickthedog();
// we lost power at some point so lets alert the user
// that the time may be wrong (the clock still works)
timeunknown = 1;
// have we read the time & date from eeprom?
restored = 0;
// setup uart
uart_init(BRRL_4800);
//DEBUGP("VFD Clock");
DEBUGP("!");
uart_puts("\n\rHello World!\n\r");
uart_puts("\n\rBuffer size is:\t");
uart_putw_dec(BUFFERSIZE);
uart_puts("\n\r");
//DEBUGP("turning on anacomp");
// set up analog comparator
ACSR = _BV(ACBG) | _BV(ACIE); // use bandgap, intr. on toggle!
_delay_ms(1);
// settle!
if (ACSR & _BV(ACO)) {
// hmm we should not interrupt here
ACSR |= _BV(ACI);
// even in low power mode, we run the clock
DEBUGP("clock init");
clock_init();
} else {
// we aren't in low power mode so init stuff
// init IOs
initbuttons();
VFDSWITCH_PORT &= ~_BV(VFDSWITCH);
DEBUGP("turning on buttons");
// set up button interrupts
DEBUGP("turning on alarmsw");
// set off an interrupt if alarm is set or unset
EICRA = _BV(ISC00);
EIMSK = _BV(INT0);
displaymode = SHOW_TIME;
DEBUGP("vfd init");
vfd_init();
DEBUGP("boost init");
boost_init(eeprom_read_byte((uint8_t *)EE_BRIGHT));
sei();
//Load and check the timezone information
intTimeZoneHour = eeprom_read_byte((uint8_t *)EE_ZONE_HOUR);
if ( ( 12 < intTimeZoneHour ) || ( -12 > intTimeZoneHour ) )
intTimeZoneHour = 0;
intTimeZoneMin = eeprom_read_byte((uint8_t *)EE_ZONE_MIN);
if ( ( 60 < intTimeZoneMin ) || ( 0 > intTimeZoneMin ) )
intTimeZoneMin = 0;
region = eeprom_read_byte((uint8_t *)EE_REGION);
DEBUGP("speaker init");
speaker_init();
beep(4000, 1);
DEBUGP("clock init");
clock_init();
DEBUGP("alarm init");
setalarmstate();
}
DEBUGP("done");
while (1) {
//_delay_ms(100);
kickthedog();
//uart_putc_hex(ACSR);
if (ACSR & _BV(ACO)) {
// DEBUGP("SLEEPYTIME");
gotosleep();
continue;
}
//DEBUGP(".");
if (just_pressed & 0x1) {
just_pressed = 0;
switch(displaymode) {
case (SHOW_TIME):
displaymode = SET_ALARM;
display_str("set alarm");
set_alarm();
break;
case (SET_ALARM):
displaymode = SET_TIME;
display_str("set time");
set_time();
timeunknown = 0;
break;
case (SET_TIME):
displaymode = SET_DATE;
display_str("set date");
set_date();
break;
case (SET_DATE):
//displaymode = SET_BRIGHTNESS;
//display_str("set brit");
//set_brightness();
displaymode = SET_ZONE;
display_str("set zone");
set_timezone();
break;
case (SET_ZONE):
displaymode = SET_BRIGHTNESS;
display_str("set brit");
set_brightness();
break;
case (SET_BRIGHTNESS):
displaymode = SET_VOLUME;
display_str("set vol ");
set_volume();
break;
case (SET_VOLUME):
displaymode = SET_REGION;
display_str("set regn");
set_region();
break;
/*
case (SET_REGION):
displaymode = SET_SNOOZE;
display_str("set snoz");
set_snooze();
break;
*/
default:
displaymode = SHOW_TIME;
}
} else if ((just_pressed & 0x2) || (just_pressed & 0x4)) {
just_pressed = 0;
displaymode = NONE;
display_date(DAY);
kickthedog();
delayms(1500);
kickthedog();
displaymode = SHOW_TIME;
}
//Check to see if GPS data is ready:
if ( gpsdataready() ) {
getgpstime();
}
}
}
/**************************** SUB-MENUS *****************************/
void set_alarm(void)
{
uint8_t mode;
uint8_t hour, min, sec;
hour = min = sec = 0;
mode = SHOW_MENU;
hour = alarm_h;
min = alarm_m;
sec = 0;
timeoutcounter = INACTIVITYTIMEOUT;
while (1) {
if (just_pressed & 0x1) { // mode change
return;
}
if (just_pressed || pressed) {
timeoutcounter = INACTIVITYTIMEOUT;
// timeout w/no buttons pressed after 3 seconds?
} else if (!timeoutcounter) {
//timed out!
displaymode = SHOW_TIME;
alarm_h = hour;
alarm_m = min;
eeprom_write_byte((uint8_t *)EE_ALARM_HOUR, alarm_h);
eeprom_write_byte((uint8_t *)EE_ALARM_MIN, alarm_m);
return;
}
if (just_pressed & 0x2) {
just_pressed = 0;
if (mode == SHOW_MENU) {
// ok now its selected
mode = SET_HOUR;
display_alarm(hour, min);
display[1] |= 0x1;
display[2] |= 0x1;
} else if (mode == SET_HOUR) {
mode = SET_MIN;
display_alarm(hour, min);
display[4] |= 0x1;
display[5] |= 0x1;
} else {
// done!
alarm_h = hour;
alarm_m = min;
eeprom_write_byte((uint8_t *)EE_ALARM_HOUR, alarm_h);
eeprom_write_byte((uint8_t *)EE_ALARM_MIN, alarm_m);
displaymode = SHOW_TIME;
return;
}
}
if ((just_pressed & 0x4) || (pressed & 0x4)) {
just_pressed = 0;
if (mode == SET_HOUR) {
hour = (hour+1) % 24;
display_alarm(hour, min);
display[1] |= 0x1;
display[2] |= 0x1;
}
if (mode == SET_MIN) {
min = (min+1) % 60;
display_alarm(hour, min);
display[4] |= 0x1;
display[5] |= 0x1;
}
if (pressed & 0x4)
delayms(75);
}
}
}
void set_time(void)
{
uint8_t mode;
uint8_t hour, min, sec;
hour = time_h;
min = time_m;
sec = time_s;
mode = SHOW_MENU;
timeoutcounter = INACTIVITYTIMEOUT;
while (1) {
if (just_pressed & 0x1) { // mode change
return;
}
if (just_pressed || pressed) {
timeoutcounter = INACTIVITYTIMEOUT;
// timeout w/no buttons pressed after 3 seconds?
} else if (!timeoutcounter) {
//timed out!
displaymode = SHOW_TIME;
return;
}
if (just_pressed & 0x2) {
just_pressed = 0;
if (mode == SHOW_MENU) {
hour = time_h;
min = time_m;
sec = time_s;
// ok now its selected
mode = SET_HOUR;
display_time(hour, min, sec);
display[1] |= 0x1;
display[2] |= 0x1;
} else if (mode == SET_HOUR) {
mode = SET_MIN;
display_time(hour, min, sec);
display[4] |= 0x1;
display[5] |= 0x1;
} else if (mode == SET_MIN) {
mode = SET_SEC;
display_time(hour, min, sec);
display[7] |= 0x1;
display[8] |= 0x1;
} else {
// done!
time_h = hour;
time_m = min;
time_s = sec;
displaymode = SHOW_TIME;
return;
}
}
if ((just_pressed & 0x4) || (pressed & 0x4)) {
just_pressed = 0;
if (mode == SET_HOUR) {
hour = (hour+1) % 24;
display_time(hour, min, sec);
display[1] |= 0x1;
display[2] |= 0x1;
time_h = hour;
eeprom_write_byte((uint8_t *)EE_HOUR, time_h);
}
if (mode == SET_MIN) {
min = (min+1) % 60;
display_time(hour, min, sec);
display[4] |= 0x1;
display[5] |= 0x1;
eeprom_write_byte((uint8_t *)EE_MIN, time_m);
time_m = min;
}
if ((mode == SET_SEC) ) {
sec = (sec+1) % 60;
display_time(hour, min, sec);
display[7] |= 0x1;
display[8] |= 0x1;
time_s = sec;
}
if (pressed & 0x4)
delayms(75);
}
}
}
void set_date(void) {
uint8_t mode = SHOW_MENU;
timeoutcounter = INACTIVITYTIMEOUT;;
while (1) {
if (just_pressed || pressed) {
timeoutcounter = INACTIVITYTIMEOUT;;
// timeout w/no buttons pressed after 3 seconds?
} else if (!timeoutcounter) {
//timed out!
displaymode = SHOW_TIME;
return;
}
if (just_pressed & 0x1) { // mode change
return;
}
if (just_pressed & 0x2) {
just_pressed = 0;
if (mode == SHOW_MENU) {
// start!
if (region == REGION_US) {
mode = SET_MONTH;
}
else {
DEBUGP("Set day");
mode = SET_DAY;
}
display_date(DATE);
display[1] |= 0x1;
display[2] |= 0x1;
} else if (((mode == SET_MONTH) && (region == REGION_US)) ||
((mode == SET_DAY) && (region == REGION_EU))) {
if (region == REGION_US)
mode = SET_DAY;
else
mode = SET_MONTH;
display_date(DATE);
display[4] |= 0x1;
display[5] |= 0x1;
} else if (((mode == SET_DAY) && (region == REGION_US)) ||
((mode == SET_MONTH) && (region == REGION_EU))) {
mode = SET_YEAR;
display_date(DATE);
display[7] |= 0x1;
display[8] |= 0x1;
} else {
displaymode = NONE;
display_date(DATE);
delayms(1500);
displaymode = SHOW_TIME;
return;
}
}
if ((just_pressed & 0x4) || (pressed & 0x4)) {
just_pressed = 0;
if (mode == SET_MONTH) {
date_m++;
if (date_m >= 13)
date_m = 1;
display_date(DATE);
if (region == REGION_US) {
display[1] |= 0x1;
display[2] |= 0x1;
} else {
display[4] |= 0x1;
display[5] |= 0x1;
}
eeprom_write_byte((uint8_t *)EE_MONTH, date_m);
}
if (mode == SET_DAY) {
date_d++;
if (date_d > 31)
date_d = 1;
display_date(DATE);
if (region == REGION_EU) {
display[1] |= 0x1;
display[2] |= 0x1;
} else {
display[4] |= 0x1;
display[5] |= 0x1;
}
eeprom_write_byte((uint8_t *)EE_DAY, date_d);
}
if (mode == SET_YEAR) {
date_y++;
date_y %= 100;
display_date(DATE);
display[7] |= 0x1;
display[8] |= 0x1;
eeprom_write_byte((uint8_t *)EE_YEAR, date_y);
}
if (pressed & 0x4)
delayms(60);
}
}
}
//Function to set the time zone
void set_timezone(void) {
int8_t hour = intTimeZoneHour;
uint8_t min = intTimeZoneMin;
uint8_t mode = SHOW_MENU;
timeoutcounter = INACTIVITYTIMEOUT;
while (1) {
if (just_pressed & 0x1) { // mode change
return;
}
if (just_pressed || pressed) {
timeoutcounter = INACTIVITYTIMEOUT;
// timeout w/no buttons pressed after 3 seconds?
} else if (!timeoutcounter) {
//timed out!
displaymode = SHOW_TIME;
return;
}
if (just_pressed & 0x2) {
just_pressed = 0;
if (mode == SHOW_MENU) {
// ok now its selected
mode = SET_HOUR;
display_timezone(hour, min);
display[1] |= 0x1;
display[2] |= 0x1;
} else if (mode == SET_HOUR) {
mode = SET_MIN;
display_timezone(hour, min);
display[4] |= 0x1;
display[5] |= 0x1;
} else {
// done!
displaymode = SHOW_TIME;
return;
}
}
if ((just_pressed & 0x4) || (pressed & 0x4)) {
just_pressed = 0;
if (mode == SET_HOUR) {
hour = ( ( hour + 1 + 12 ) % 25 ) - 12;
display_timezone(hour, min);
display[1] |= 0x1;
display[2] |= 0x1;
intTimeZoneHour = hour;
eeprom_write_byte((uint8_t *)EE_ZONE_HOUR, hour);
//Debugging:
uart_puts("\n\rTimezone offset hour:\t");
uart_putw_dec(hour);
}
if (mode == SET_MIN) {
min = ( min + 1 ) % 60;
display_timezone(hour, min);
display[4] |= 0x1;
display[5] |= 0x1;
intTimeZoneMin = min;
eeprom_write_byte((uint8_t *)EE_ZONE_MIN, min);
}
if (pressed & 0x4)
delayms(75);
}