ثلاث عيون معلقة على عمود ، أو حكاية أن خمسة أرجل من ATtiny13 كافية

PB2 HIGH, +5, PB3 LOW, 0, PB0 , — .
DDRB , PB0, ( ) = 0 (PB0 ), = 1 (PB2, PB3 — ), .. 110, — , 1 0 — .

DDRB = 12;  //  000001100    - 12
//        (!)
//        pinMode().

— PORTB , =1 (PB2 HIGH), — (PB3 LOW), — , 01

PORTB = 8;  //(dec)8 === (bin)000001000
//  -        .

PINB, , — .
, — .
3 (PB3) : 1 , 3 .
3<<00000001 === PB3<<1 // — 00001000
, _BV(x), (x<<1), .. _BV(PB3) — 1.
_BV(PB3) | _BV(PB2) 00001100 (| — ).
: , , .

PORTB |= _BV(PB3) | _BV(PB2); // 2  3   == 1,     PB2  PB3  HIGH,   PORTB  

0 , , . 0 1 . , , 1 , 0 — 0 .

PORTB &= ~(_BV(PB3) | _BV(PB2)); //   PORTB 2  3  -  , LOW,   .

, . , — , 37/2=18 , , . :
) , , , , ;
) — , " " 4 ;
) , 4 ( PERIOD_2->PERIOD_3 PERIOD_6->PERIOD_7);
) 4 .

#include <limits.h>         // USHRT_MAX
#include <avr/sleep.h>      // ,  
#include <avr/interrupt.h>  //   
#include <avr/pgmspace.h>   //    

#define ONE_SECOND  37      //     1 
#define QT_SECOND   9       //  
#define MAX_GLOBAL_TIMER_VALUE  (USHRT_MAX / 2)     // uint16_t globalTimer -   . 65535 /2 
//     ,  MAX_GLOBAL_TIMER_VALUE - 1
#define PERIOD_FLASH_GREEN  QT_SECOND           //    ( ) -    
#define PERIOD_FLASH_YELLOW ONE_SECOND * 1      //    -    - 
                                                        //  --- 
#define PERIOD_0        ONE_SECOND * 10     //R G R G   0.  ---   (15 )
#define PERIOD_1        ONE_SECOND * 3      //R g R g   1.  ---   (3 )     
#define PERIOD_2        ONE_SECOND * 1      //R Y R Y   2.  ---  (1 )
#define PERIOD_3        ONE_SECOND * 2      //RY Y RY Y 3. + ---  (2 ) 
#define PERIOD_4        ONE_SECOND * 7      //G R G R   4.  ---   (10 )
#define PERIOD_5        ONE_SECOND * 3      //g R g R   5.   --- (3 )
#define PERIOD_6        ONE_SECOND * 1      //Y R Y R   6.  ---  (1 )
#define PERIOD_7        ONE_SECOND * 2      //Y RY Y RY 7.  --- + (2 )

typedef struct{
    const uint8_t ddr_val_0;    // DDRB value    
    const uint8_t port_val_0;   // PORTB value  
    const uint8_t ddr_val_1;    // DDRB value    
    const uint8_t port_val_1;   // PORTB value
    const uint16_t flash_period;    // period of flashing -   _val_1  _val_0
    const uint16_t signal_period;   // period of this lighting state
}lightSignalization;            //   , _0  _1 -   , flash_long -   

//    (PINS === 0 0 0 g r y0 btt y1):
 //     ""     
#define BUTTON      PB1
#define RED_PIN     PB3     // OUT: 1 - "-" , 0 - "-" , IN -  , ,  (!) 
#define YELLOW0_PIN PB2     // OUT: 1 -  "-" 
#define YELLOW1_PIN PB0     // OUT: 1 -  "-" 
#define GREEN_PIN   PB4     // OUT: 1 - "-" , 0 - "-" , IN -  , ,  (!) 

#define BUTTON_ON  !(PINB & _BV(BUTTON))    //( (PINB & _BV(BUTTON)) == 0)  //  " "
#define BUTTON_OFF  (PINB & _BV(BUTTON))    // ~(PINB & _BV(BUTTON)) -\\- " "

#define RED     _BV(RED_PIN)            // _BV -     (), 1<<VALUE
#define YELL0   _BV(YELLOW0_PIN)        //
#define YELL1   _BV(YELLOW1_PIN)
#define GREEN   _BV(GREEN_PIN)

//       lightSignalization traffic_signals[]
#define LIGHT_NUM_YELLOW_FLASH  8       //       -  - flash yellows lights
#define LIGHT_NUM_STD_START     0       //       
#define LIGHT_NUM_LIGHTS_OFF    9       //      -   - traffic lights off
#define LIGHT_NUM_STD_MASK      7       // ___++ &LIGHT_NUM_STD_MASK -    0  7   

//....................................  
// 
const lightSignalization traffic_signals[] PROGMEM= {   //   ,  ,   -, PINS === 0 0 0 g r y0 btt y1
 // {DDRB0, PORTB0,   DDRB_flashing, PORTB_flasinf (if flashing),   continuous of half-period flashing,   continuous id mode running}
    {RED|GREEN, RED,   0, 0,   0, PERIOD_0},                    // R G R G
    {RED, RED,  RED|GREEN, RED,   QT_SECOND, PERIOD_1},     // R g R g - flash east green
    {RED|YELL1, RED|YELL1,   0, 0,   0, PERIOD_2 },             // R Y1 R Y1
    {RED|YELL0|YELL1, RED|YELL0|YELL1,  0, 0,   0, PERIOD_3 },  // RY0 Y1 RY0 Y1
    {RED|GREEN, GREEN,   0, 0,   0, PERIOD_4},                  // G R G R
    {RED|GREEN, GREEN,   RED, 0,    QT_SECOND, PERIOD_5 },      // g R g R - flash nord green
    {RED|YELL0, YELL0,   0, 0,   0, PERIOD_6},                  // Y0 R Y0 R
    {RED|YELL0|YELL1,  YELL0|YELL1,   0, 0,   0, PERIOD_7  },   // Y0 RY1 Y0 RY1

    {YELL0|YELL1, YELL0|YELL1,   YELL0|YELL1, 0,  ONE_SECOND, 0},   // y0 y1 y0 y1 - flash yellows lights 
    {0, 0,   0, 0,   0, 0}              //  traffic lights off, 
};

volatile uint16_t  globalTimer;     //     64   
uint8_t current_signal;     // 1    ,   traffic_signals
uint16_t tl_flash_end;      // 2       ( !0), 
uint16_t tl_signal_end;     // 2            ( !0)

//....................................  
void setPeriods(uint8_t num, bool set_both_flash_and_signal);   //  tl_flash_end, tl_signal_end
void setPorts(uint8_t num, bool use_main_values);               //    

//....................................  
//
//  -    globalTimer  1/37 
ISR(TIM0_OVF_vect){
    globalTimer++;  //       . ,   while(1)   .
}

int main() {
//
bool use_main_values = true;            // lightSignalization._val_0 (1)  lightSignalization._val_1 (0)? -  
current_signal = LIGHT_NUM_STD_START;   //   .     .

    //     "  -". 
    set_sleep_mode(SLEEP_MODE_IDLE);    //   - .
    sleep_enable();                 //    

    TCCR0B = _BV(CS02) | _BV(CS00); //  0 - clock frequency / 1024
    TIMSK0 |= _BV(TOIE0);           //      overflow interrupt

    sei();      //    
    while(1){
        //   ? 
        if(globalTimer > MAX_GLOBAL_TIMER_VALUE){
            globalTimer -= MAX_GLOBAL_TIMER_VALUE;          //   
            // 
            if(tl_flash_end){
                tl_flash_end -= MAX_GLOBAL_TIMER_VALUE;     //   ,  
            }
            if(tl_signal_end){
                tl_signal_end -= MAX_GLOBAL_TIMER_VALUE;    // //   ,  
            }
            // setPeriods(currentMode, false); //   12  ,  tl_.._end   ,     
        }

                //      (tl_flash_end !=0 )
        if(tl_flash_end){
            //     
            if(globalTimer > tl_flash_end){
                use_main_values = !use_main_values;             // !use_main_values -      ))
                setPorts(current_signal, use_main_values);      //      
                setPeriods(current_signal, false);              //     ,   
            }
        }

        //         -    operating_std     - --
        if(tl_signal_end){
            //       (use_main_values -       -  )
            if((globalTimer > tl_signal_end)  && use_main_values){
                current_signal ++;                          //   
                current_signal &= LIGHT_NUM_STD_MASK;       //    3-,        0  7
                use_main_values = true;                     //  -    
                setPorts(current_signal, use_main_values);  //        
                setPeriods(current_signal, true);           //       
            }
        }

        sleep_cpu();    //      -   .
    }
}

    //   
 void setPorts(uint8_t num, bool use_main_values){
    uint8_t val;
    DDRB = 0; PORTB = 0;
    //    () - ddr_val_0, else = ddr_val_1
//  val = (use_main_values) ? pgm_read_byte_near(&(traffic_signals[num].ddr_val_0))
//                          : pgm_read_byte_near(&(traffic_signals[num].ddr_val_1));

    //   ,  , ,  ,   ,   14 (!!!)   .
    val = pgm_read_byte_near(&(traffic_signals[num].ddr_val_0)+( (use_main_values) ? 0 : 2) ); 
    val &= ~_BV(BUTTON);    //     - 
    DDRB = val;             //    

    val = (use_main_values) ? pgm_read_byte_near(&(traffic_signals[num].port_val_0)) 
                            : pgm_read_byte_near(&(traffic_signals[num].port_val_1));
    val|= _BV(BUTTON);  //     -  -    
    PORTB = val;        //      
}

 //     ( 
void setPeriods(uint8_t num, bool set_both_flash_and_signal){
//  
    tl_flash_end = pgm_read_word_near (&(traffic_signals[num].flash_period));   //  
    tl_flash_end = (tl_flash_end)? tl_flash_end + globalTimer : 0;  //    -      
    //if(tl_flash_end){         tl_flash_end += globalTimer;    } <-     8  

    //     -    
    if(set_both_flash_and_signal){
        tl_signal_end = pgm_read_word_near(&(traffic_signals[num].signal_period));  
        tl_signal_end = (tl_signal_end)? tl_signal_end + globalTimer : 0;           //     ,    
    }
}

//Program size: 610 bytes (used 60% of a 1 024 byte maximum) (0,58 secs)
//Minimum Memory Usage: 7 bytes (11% of a 64 byte maximum)

#include <limits.h>         // USHRT_MAX
#include <avr/io.h>         //     IDE
#include <avr/sleep.h>      // ,     
#include <avr/interrupt.h>  //   
#include <avr/pgmspace.h>   //    

#ifdef GIMSK    //  ATtiny13 -       
#define F_CPU 9600000UL     //      ,   
#define ONE_SECOND  37      //     1 
#define QT_SECOND   9       //  
// GIMSK &= ~_BV(INT0); -   INT0  
#define DISABLE_EXTERNAL_INT0   GIMSK &= ~(_BV(INT0)); GIFR  &= ~(_BV(INTF0))   //EIMSK/EIFR  
//GIMSK |= _BV(INT0) -   INT0
#define ENABLE_EXTERNAL_INT0    GIMSK |= _BV(INT0)  ; GIFR  &= ~(_BV(INTF0))
#else           // 328 -   
#define F_CPU 16000000UL
#define ONE_SECOND  64      //     1  - .   
#define QT_SECOND   16      //  
// 328 INT0 -  PD2...     ,       (,  ),            
#define DISABLE_EXTERNAL_INT0   EIMSK &= ~(_BV(INT0)); EIFR  &= ~(_BV(INTF0)) 
// ,   -  EICRA - ISC00-ISC01 == 00, lo level, EIMSK - INT0, EIFR-INTF0  
#define ENABLE_EXTERNAL_INT0    EIMSK |= _BV(INT0)  ; EIFR  &= ~(_BV(INTF0))
#endif

#define MAX_GLOBAL_TIMER_VALUE  (USHRT_MAX / 2)     // uint16_t globalTimer -   . 65535 /2 
//     ,  MAX_GLOBAL_TIMER_VALUE - 1
#define PERIOD_PRESS_BUTTON_SHORT   QT_SECOND/2         //      ( - ) -  
#define PERIOD_PRESS_BUTTON_LONG    QT_SECOND*4         //      - /
#define PERIOD_FLASH_GREEN          QT_SECOND           //     ( ) -    
#define PERIOD_FLASH_YELLOW         ONE_SECOND * 1      //     -    - 

                                            //  --- 
#define PERIOD_0        ONE_SECOND * 5      // R G R G  0.  ---   (5 )
#define PERIOD_1        ONE_SECOND * 3      //R g R g   1.  ---   (3 )     
#define PERIOD_2        ONE_SECOND * 1      //R Y R Y   2.  ---  (1 )
#define PERIOD_3        ONE_SECOND * 2      //RY Y RY Y 3. + ---  (2 ) 
#define PERIOD_4        ONE_SECOND * 7      // G R G R  4.  ---   (7 )
#define PERIOD_5        ONE_SECOND * 3      //g R g R   5.   --- (3 )
#define PERIOD_6        ONE_SECOND * 1      //Y R Y R   6.  ---  (1 )
#define PERIOD_7        ONE_SECOND * 2      //Y RY Y RY 7.  --- + (2 )

//  /  .     -     
typedef struct{
    const uint8_t ddr_val_0;    // DDRB value    
    const uint8_t port_val_0;   // PORTB value  
    const uint8_t ddr_val_1;    // DDRB value    
    const uint8_t port_val_1;   // PORTB value
    const uint16_t flash_period;    // period of flashing -   _val_1  _val_0 ( =0,  )
    const uint16_t signal_period;   // period of this lighting state ( =0,       )
}lightSignalization;            //   , _0  _1 -   , flash_long -   

//    (PINS === 0 0 0 g r y0 btt y1):
 //     ""     
#define BUTTON_PIN  PB1     // ,   INT0. ,   ,  = LOW
#define RED_PIN     PB3     // OUT: 1 - "-" , 0 - "-" , IN -  , ,  (!) 
#define YELLOW0_PIN PB2     // OUT: 1 -  "-" 
#define YELLOW1_PIN PB0     // OUT: 1 -  "-" 
#define GREEN_PIN   PB4     // OUT: 1 - "-" , 0 - "-" , IN -  , ,  (!) 

#define BUTTON_ON  !(PINB & _BV(BUTTON_PIN))    //( (PINB & _BV(BUTTON)) == 0)  //  " "
#define BUTTON_OFF  (PINB & _BV(BUTTON_PIN))    // ~(PINB & _BV(BUTTON)) -\\- " "

#define RED     _BV(RED_PIN)            // _BV -     (), 1<<VALUE
#define YELL0   _BV(YELLOW0_PIN)        //    -
#define YELL1   _BV(YELLOW1_PIN)
#define GREEN   _BV(GREEN_PIN)          //    - (  0 -   -)  DDR=1

//      lightSignalization traffic_signals[]
#define LIGHT_NUM_YELLOW_FLASH  8       //       ( ) -  - flash yellows lights
#define LIGHT_NUM_STD_START     0       //        (--)
#define LIGHT_NUM_LIGHTS_OFF    9       //      -   - traffic lights off
#define LIGHT_NUM_START_SHOW    10      //         
#define LIGHT_NUM_ERR           11      //   -     

#define MASK_LIGHT_NUM_STD      7       // ___++ &= LIGHT_NUM_STD_MASK -    0  7   

//....................................  
// 
const lightSignalization traffic_signals[] PROGMEM= {   //   ,  ,   -, PINS === 0 0 0 g r y0 btt y1
 // {DDRB0, PORTB0,   DDRB_flashing, PORTB_flasinf (if flashing),   continuous of half-period flashing,   continuous id mode running}
    {RED|GREEN, RED,   0, 0,   0, PERIOD_0},                    // R G R G
    {RED, RED,  RED|GREEN, RED,   QT_SECOND, PERIOD_1},         // R g R g - flash east green
    {RED|YELL1, RED|YELL1,   0, 0,   0, PERIOD_2 },             // R Y1 R Y1
    {RED|YELL0|YELL1, RED|YELL0|YELL1,  0, 0,   0, PERIOD_3 },  // RY0 Y1 RY0 Y1
    {RED|GREEN, GREEN,   0, 0,   0, PERIOD_4},                  // G R G R
    {RED|GREEN, GREEN,   RED, 0,    QT_SECOND, PERIOD_5 },      // g R g R - flash nord green
    {RED|YELL0, YELL0,   0, 0,   0, PERIOD_6},                  // Y0 R Y0 R
    {RED|YELL0|YELL1,  YELL0|YELL1,   0, 0,   0, PERIOD_7  },   // Y0 RY1 Y0 RY1

    {YELL0|YELL1, YELL0|YELL1,   YELL0|YELL1, 0,  ONE_SECOND, 0},   // y0 y1 y0 y1 - flash yellows lights 
    {0, 0,   0, 0,   0, 0},             //  traffic lights off, 
    {RED|GREEN|YELL0, RED|YELL0,   RED|GREEN|YELL1, GREEN|YELL1,   1, PERIOD_2},        //  PERIOD_2  -      ,     

    {YELL0|GREEN, YELL0,   YELL1|GREEN, YELL1|GREEN,  1, 0}     //  -     
};

volatile uint16_t  globalTimer; //      64   
uint8_t scan_button_cnt;        //      
uint16_t tl_flash_end;          // 2       ( !0), 
uint16_t tl_signal_end;         // 2            ( !0) 
uint8_t f_button_state_flags;   // 1,        
// , 8    

#pragma region bits_of_f_button_state_flags 
    //      MODES:  wakeup 11 -> work 00 -> tosleep 01 -> pwrdown 11 -> wakeup 11
#define MODE_LBIT 0
#define MODE_HBIT 1
#define MODE_VALUE          ( f_button_state_flags & 3 )    //  -   MODE_
#define SET_MODE_WORK       f_button_state_flags &= ~(_BV(MODE_HBIT) );  f_button_state_flags &= ~(_BV(MODE_LBIT) );// 00 - work
//  f_button_state_flags &= ~( _BV(MODE_HBIT) | _BV(MODE_LBIT) ) -    ,  
#define MODE_WORK_VALUE     0
#define SET_MODE_TOSLEEP    f_button_state_flags &= ~(_BV(MODE_HBIT)); f_button_state_flags |= _BV(MODE_LBIT)   // 01 - tosleep
#define MODE_TOSLEEP_VALUE  1
#define SET_MODE_PWRDOWN    f_button_state_flags |= _BV(MODE_HBIT); f_button_state_flags &= ~(_BV(MODE_LBIT))   // 10 - pwrdown 
#define MODE_PWRDOWN_VALUE  2
#define SET_MODE_WAKEUP     f_button_state_flags |= _BV(MODE_HBIT); f_button_state_flags |= _BV(MODE_LBIT)      // 11 - wakeup  
#define MODE_WAKEUP_VALUE   3

#define FORCE_SET_NEW_SIGNAL_BIT        2   //             current_signal
#define IF_FORCE_SET_SIGNAL_FLAG        ( f_button_state_flags & _BV(FORCE_SET_NEW_SIGNAL_BIT) )    // IF_ -    
#define SET_FORCE_SET_SIGNAL_FLAG       f_button_state_flags |=  _BV(FORCE_SET_NEW_SIGNAL_BIT)      // SET_ -    1
#define RES_FORCE_SET_SIGNAL_FLAG       f_button_state_flags &= ~( _BV(FORCE_SET_NEW_SIGNAL_BIT) )  // RES_ -    0

//  3   

#define LIGHT_SIGNAL_ALT_MODE_BIT       4   // =0 (--)  =1 ( )   
#define IF_LIGHT_SIGNAL_ALT_MODE_FLAG   ( f_button_state_flags & _BV(LIGHT_SIGNAL_ALT_MODE_BIT) )   //1( )  0(--)   ?
#define SET_LIGHT_SIGNAL_ALT_MODE_FLAG  f_button_state_flags |=  _BV(LIGHT_SIGNAL_ALT_MODE_BIT)
#define RES_LIGHT_SIGNAL_ALT_MODE_FLAG  f_button_state_flags &= ~( _BV(LIGHT_SIGNAL_ALT_MODE_BIT) )
#define FLIP_LIGHT_SIGNAL_ALT_MODE_FLAG f_button_state_flags ^= _BV(LIGHT_SIGNAL_ALT_MODE_BIT)

#define USE_FIRST_VALUES_LIGHT_BIT      5   //     -  lightSignalization  
#define IF_USE_FIRST_VALUES_LIGHT_FLAG  (f_button_state_flags & _BV(USE_FIRST_VALUES_LIGHT_BIT)) // lightSignalization._val_0 (1)  lightSignalization._val_1 (0)? -  
#define SET_USE_FIRST_VALUES_LIGHT_FLAG     f_button_state_flags |= _BV(USE_FIRST_VALUES_LIGHT_BIT)
#define RES_USE_FIRST_VALUES_LIGHT_FLAG     f_button_state_flags &= ~( _BV(USE_FIRST_VALUES_LIGHT_BIT))
#define FLIP_USE_FIRST_VALUES_LIGHT_FLAG    f_button_state_flags ^= _BV(USE_FIRST_VALUES_LIGHT_BIT)     //  

#define SHORT_PRESS_FLAG_BIT    6   // , 1       
#define IF_SHORT_PRESS_FLAG     ( f_button_state_flags & _BV(SHORT_PRESS_FLAG_BIT) )        // -   == 1
#define SET_SHORT_PRESS_FLAG    f_button_state_flags |= _BV(SHORT_PRESS_FLAG_BIT)
#define RES_SHORT_PRESS_FLAG    f_button_state_flags &= ~(_BV(SHORT_PRESS_FLAG_BIT))

#define LONG_PRESS_FLAG_BIT     7 // , 1       
#define IF_LONG_PRESS_FLAG      ( f_button_state_flags & _BV(LONG_PRESS_FLAG_BIT) )     // -   == 1
#define SET_LONG_PRESS_FLAG     f_button_state_flags |= _BV(LONG_PRESS_FLAG_BIT)
#define RES_LONG_PRESS_FLAG     f_button_state_flags &= ~(_BV(LONG_PRESS_FLAG_BIT))
#pragma endregion

//....................................  
void setPeriods(uint8_t num, bool set_both_flash_and_signal);   //  tl_flash_end, tl_signal_end
void setPorts(uint8_t num, bool use_main_values);               //    
void inline init_timer_clock(){     //     
#ifdef GIMSK    //  ATtiny13 - 
    TCCR0B = _BV(CS02) | _BV(CS00); //  0 - clock frequency / 1024
    TIMSK0 |= _BV(TOIE0);           //      overflow interrupt
#else           //   , 328/16
    // 100 - prescaler 64; Foverflow = 16M/64*256 ~=976.56Hz,
    TCCR2B = (1<<CS22) | (1<<CS21) | (1<<CS20) ;  // 111 - CLK/1024, 16M/1024*254 - 1/64 
    TIMSK2 |=(1<<TOIE0);  // interrupt ovfl enable
    //Serial.begin(115200);
#endif
}

//....................................  
//
//  -  -    globalTimer  1/37 
#ifdef GIMSK    //  ATtiny13
ISR(TIM0_OVF_vect){
    globalTimer++;  //       . ,   while(1)   .
}
#else
//   0 -     , -   - -     2
ISR(TIMER2_OVF_vect){
    globalTimer++;
}
#endif
//   -    (,  ,    0)
ISR(INT0_vect){
    DISABLE_EXTERNAL_INT0;
    SET_MODE_WAKEUP;        //      POWER DOWN
    globalTimer = 0;        //  -  
    scan_button_cnt = 0;    //   
    RES_SHORT_PRESS_FLAG;   //
    RES_LONG_PRESS_FLAG;    //  
}

/*
//   - 
void inline dbg(){
    DDRB |= YELL0; PORTB ^= YELL0;
}
*/

//....................................  
//
int main() {
    uint8_t current_signal;             // 1    ,   traffic_signals

#pragma region Initialisation&setup
    //     "  -". 
    set_sleep_mode(SLEEP_MODE_IDLE);    //   - .
    sleep_enable();             //    

    init_timer_clock();         //     

    globalTimer = 0;            //  -  
    SET_MODE_WORK;              //    
    SET_USE_FIRST_VALUES_LIGHT_FLAG;    //  
    scan_button_cnt = 0;        //   

    //       
    current_signal = LIGHT_NUM_START_SHOW;  //     -   /
    SET_FORCE_SET_SIGNAL_FLAG;              //    current_signal

    sei();      //    

#pragma endregion
    while(1){

#pragma region TimerOVF
        //   ? 
        if(globalTimer > MAX_GLOBAL_TIMER_VALUE){
            globalTimer -= MAX_GLOBAL_TIMER_VALUE;          //   
            // 
            if(tl_flash_end){
                tl_flash_end -= MAX_GLOBAL_TIMER_VALUE;     //   ,  
            }
            if(tl_signal_end){
                tl_signal_end -= MAX_GLOBAL_TIMER_VALUE;    // //   ,  
            }
            // setPeriods(currentMode, false); //   12  ,  tl_.._end   ,     
        }
#pragma endregion

#pragma region ButtonState
        //  
        if(BUTTON_ON){
            if(scan_button_cnt < USHRT_MAX){
                scan_button_cnt++;              //   1/37     
            }
            //   -  ,    
            if(scan_button_cnt > PERIOD_PRESS_BUTTON_SHORT){
                SET_SHORT_PRESS_FLAG;       // ,     , 
            }
            if(scan_button_cnt > PERIOD_PRESS_BUTTON_LONG){
                SET_LONG_PRESS_FLAG;        //     
            }
        }
#pragma endregion
#pragma region LightWorkLogic
        //      (tl_flash_end !=0 )
        if(tl_flash_end){
            //     
            if(globalTimer > tl_flash_end){
                FLIP_USE_FIRST_VALUES_LIGHT_FLAG;               // !use_main_values -      ))
                setPorts(current_signal, IF_USE_FIRST_VALUES_LIGHT_FLAG);       //      
                setPeriods(current_signal, false);          //     ,   
            }
        }

        //         
        // -    operating_std     - -- 
        //    ,   +1   7
        if(tl_signal_end){
            //       (use_main_values -       -  )
            if((globalTimer > tl_signal_end)  && IF_USE_FIRST_VALUES_LIGHT_FLAG){
                current_signal ++;                          //   
                current_signal &= MASK_LIGHT_NUM_STD;       //    3-,        0  7
                SET_FORCE_SET_SIGNAL_FLAG;      //    current_signal
            }
        }
#pragma endregion

#pragma region MODE_VALUELogic
        //   , 2  f_button_state_flags
        //? MODE_VALUE === pwrdown -> wakeup -> work -> tosleep -> pwrdown
        switch (MODE_VALUE){
        case (MODE_WAKEUP_VALUE):
            set_sleep_mode(SLEEP_MODE_IDLE);        //  !
            //   ,       - IF_BUTTON_LONG_FLAG
            if(IF_LONG_PRESS_FLAG){
                //      ?   !
                if(current_signal == LIGHT_NUM_LIGHTS_OFF){
                    //          ? LIGHT_NUM_ERR
                    current_signal = (IF_LIGHT_SIGNAL_ALT_MODE_FLAG) ? LIGHT_NUM_YELLOW_FLASH : LIGHT_NUM_STD_START;
                    SET_FORCE_SET_SIGNAL_FLAG;      //    current_signal
                }
            }
            //,  ...
            if(BUTTON_OFF){
                //      ,   
                if(IF_LONG_PRESS_FLAG){
                    SET_MODE_WORK;
                }else{  
                    //  , ,   ,  
                    SET_MODE_PWRDOWN;   //        
                }
                scan_button_cnt = 0;    //       
                RES_SHORT_PRESS_FLAG;   //   , 
                RES_LONG_PRESS_FLAG;
            }
            break;

        case (MODE_WORK_VALUE):
            //  ?
            if(scan_button_cnt > 0){
                //   ?
                if(IF_LONG_PRESS_FLAG){
                    current_signal = LIGHT_NUM_LIGHTS_OFF;      //  
                    SET_FORCE_SET_SIGNAL_FLAG;                  //   -   " "
                    SET_MODE_TOSLEEP;                           //   !
                }
                // ? 
                if(BUTTON_OFF){
                    //     ?
                    if(IF_SHORT_PRESS_FLAG){
                        FLIP_LIGHT_SIGNAL_ALT_MODE_FLAG;    //     
                        current_signal = (IF_LIGHT_SIGNAL_ALT_MODE_FLAG) ? LIGHT_NUM_YELLOW_FLASH : LIGHT_NUM_STD_START; //    . 
                        SET_FORCE_SET_SIGNAL_FLAG;          //      current_signal
                    }
                    scan_button_cnt=0;
                    RES_SHORT_PRESS_FLAG; //    
                    RES_LONG_PRESS_FLAG;
                }
            }
            break;

        case (MODE_TOSLEEP_VALUE):
            //    -    .
            if(BUTTON_OFF){
                SET_MODE_PWRDOWN;       //    
            }
            break;

        case (MODE_PWRDOWN_VALUE):
            // !  , !  ?
            if(BUTTON_ON){
                set_sleep_mode(SLEEP_MODE_IDLE);
                SET_MODE_WAKEUP;
            }else{  
                //  ?  .
                scan_button_cnt = 0;
                RES_LONG_PRESS_FLAG;
                RES_SHORT_PRESS_FLAG;
                current_signal = LIGHT_NUM_LIGHTS_OFF;      // 
                SET_FORCE_SET_SIGNAL_FLAG;
                set_sleep_mode(SLEEP_MODE_PWR_DOWN);    //    -   while(1)
                ENABLE_EXTERNAL_INT0;                   //     
            }
            break;

        default:
            //!       -    .  -      
            current_signal = LIGHT_NUM_ERR;
            SET_FORCE_SET_SIGNAL_FLAG;
            //setPorts(current_signal,true);
            //setPeriods(current_signal,true);
            break;
        }
#pragma endregion

        //   ,      - ?
        if(IF_FORCE_SET_SIGNAL_FLAG){       //       current_signal
            RES_FORCE_SET_SIGNAL_FLAG;      //  
            SET_USE_FIRST_VALUES_LIGHT_FLAG;    //   -   0-   -
            setPorts(current_signal, IF_USE_FIRST_VALUES_LIGHT_FLAG);   //      #current_signal  
            setPeriods(current_signal, true);
        }

        //    1/37 . , ,  .
        sleep_cpu();    //       -   .
        }
}

//.................................... 
//
//    
 void setPorts(uint8_t num, bool  use_main_values){
    uint8_t val;
    DDRB = 0; PORTB = 0;
    //    () - ddr_val_0, else = ddr_val_1
//  val = (use_main_values) ? pgm_read_byte_near(&(traffic_signals[num].ddr_val_0))
//                          : pgm_read_byte_near(&(traffic_signals[num].ddr_val_1));

    //   ,    ,  ,   ,   14 (!!!)   .
    val = pgm_read_byte_near(&(traffic_signals[num].ddr_val_0)+( (use_main_values) ? 0 : sizeof(uint8_t)*2 ) ); 

    val &= ~_BV(BUTTON_PIN);    //    ,    - 
    DDRB = val;                 //    

    val = (use_main_values) ? pgm_read_byte_near(&(traffic_signals[num].port_val_0)) 
                            : pgm_read_byte_near(&(traffic_signals[num].port_val_1));
    val|= _BV(BUTTON_PIN);  //     -  -    
    PORTB = val;        //      
}

 //     (    )
void setPeriods(uint8_t num, bool set_both_flash_and_signal){
//  
    tl_flash_end = pgm_read_word_near (&(traffic_signals[num].flash_period));   //  
    tl_flash_end = (tl_flash_end)? tl_flash_end + globalTimer : 0;  //    -      
    //if(tl_flash_end){         tl_flash_end += globalTimer;    } <-     8  

    //     -    
    if(set_both_flash_and_signal){
        tl_signal_end = pgm_read_word_near(&(traffic_signals[num].signal_period));  
        tl_signal_end = (tl_signal_end)? tl_signal_end + globalTimer : 0;           //     ,    
    }
}
//Program size: 976 bytes (used 95% of a 1 024 byte maximum) (0,83 secs)
//Minimum Memory Usage: 8 bytes (13% of a 64 byte maximum)

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