Исправил ошибки.

inc/main.h

@@ -45,7 +45,7 @@
 /* все временные константы кнопок кратны периоду опроса кнопок - 10 ms. */
 #define BTN_TIME_PRESSED   3
 #define BTN_TIME_HOLDED    50
-#define BTN_TIME_REPEATED  10
+#define BTN_TIME_REPEATED  5
 
 /* Port C, Lamp digits, output */
 #define DIGIT_BLANK     0x0F

src/main.c

@@ -19,11 +19,10 @@
 #include "event-system.h"
 
 /* Defines */
-#define TIMER2_HZ         250
-#define TIMER2_PRESCALER  256
-#define TIMER2_CS         (1<<CS22 | 1<<CS21 | 0<<CS20)
+#define TIMER2_HZ         252
+#define TIMER2_PRESCALER  1024
+#define TIMER2_CS         (1<<CS22 | 1<<CS21 | 1<<CS20)
 #define TIMER2_CNT        (0x100 - (F_CPU / TIMER2_PRESCALER / TIMER2_HZ))
-#define OCR2_MIN          (0xFF - TIMER2_CNT)
 #define OCR2_MAX          0xFF
 #define FULL_BRIGHT_ON    0x06
 #define FULL_BRIGHT_OFF   0x22
@@ -44,7 +43,7 @@ static volatile struct {
 static btn_t Button[BTN_NUM] = {
   {0, evBTN1Pressed, evBTN1Holded, BUTTON1_PIN},
   {0, evBTN2Pressed, evBTN2Pressed, BUTTON2_PIN},
-  {0, evBTN3Pressed, evBTN2Pressed, BUTTON3_PIN}
+  {0, evBTN3Pressed, evBTN3Pressed, BUTTON3_PIN}
 };
 static volatile uint8_t DISP_WDT = 0;
 static EEMEM uint8_t EEP_Bright;
@@ -172,7 +171,7 @@ static void Board_Init(void) {
   TCCR2 = TIMER2_CS;
   TCNT2 = TIMER2_CNT;
   TIMSK = _BV(TOIE2) | _BV(OCIE2);
-  OCR2 = Bright;
+  OCR2 = OCR2_MAX;
 
   /* Interrupt from RTC */
   MCUCR = _BV(ISC11); // falling edge
@@ -234,7 +233,7 @@ static void btnProcess(void) {
       // button pressed
       if (BUTTON_STATE(Button[i].pin) == 0) {
         Button[i].time ++;
-        if (Button[i].time > BTN_TIME_HOLDED) {
+        if (Button[i].time >= BTN_TIME_HOLDED) {
           Button[i].time -= BTN_TIME_REPEATED;
           if (Button[i].holded == Button[i].pressed) {
             // if pressed and holded - same function, then button pressed auto repeat
@@ -309,11 +308,13 @@ void showYear(void) {
 }
 
 void showBright(void) {
+  uint8_t a = Bright / 100;
+  uint8_t b = Bright - (a * 100);
   DISP_WDT = DISP_WDT_TIME;
   Digit[0] = DIGIT_BLANK;
-  Digit[1] = 0x00;
-  Digit[2] = RTC.Year >> 4;
-  Digit[3] = RTC.Year & 0x0F;
+  Digit[1] = a;
+  Digit[2] = b / 10;
+  Digit[3] = b % 10;
 }
 
 void incWDay(void) {
@@ -374,14 +375,14 @@ void incBright(void) {
   if (Bright < 0xFF) {
     Bright ++;
   } else {
-    Bright = OCR2_MIN;
+    Bright = TIMER2_CNT;
   }
   OCR2 = Bright;
   Flag.saveEEP = 1;
 }
 
 void decBright(void) {
-  if (Bright > OCR2_MIN) {
+  if (Bright > TIMER2_CNT) {
     Bright --;
   } else {
     Bright = 0xFF;