From 108f5dbdba6f68a341d6d0a87665b5b28c6f4e5a Mon Sep 17 00:00:00 2001
From: sergeyyarkov <serzh.yarkov@gmail.com>
Date: Sat, 28 Jan 2023 03:36:06 +0300
Subject: [PATCH] shift register

---
 firmware.asm | 174 +++++++++++++++++++---------
 firmware.eep |   5 +
 firmware.hex |  17 ++-
 firmware.lss | 290 ++++++++++++++++++++++++++++++-----------------
 firmware.lst | 311 +++++++++++++++++++++++++++++++--------------------
 firmware.pro |   5 +-
 6 files changed, 514 insertions(+), 288 deletions(-)
 create mode 100644 firmware.eep

diff --git a/firmware.asm b/firmware.asm
index 777abe8..5228a78 100644
--- a/firmware.asm
+++ b/firmware.asm
@@ -15,13 +15,16 @@
 .LIST
 
 .DEF tmp_r_a = r16
+.DEF COUNTER = r20
 
 ;========================================;
 ;                LABELS                  ;
 ;========================================;
 
-.EQU LED_POWER_PORT = PD6
-
+.EQU LED_POWER_PORT   = PD6
+.EQU CLOCK_PIN        = PB0   ; ST_CP on 74HC595
+.EQU DATA_PIN         = PB1   ; DS on 74HC595
+.EQU LATCH_PIN        = PB2   ; SH_CP on 74HC595
 
 ;========================================;
 ;              CODE SEGMENT              ;
@@ -35,41 +38,95 @@
 ;========================================;
 
 rjmp 	RESET_vect			      ; Program start at RESET vector
-reti                        ; External Interrupt Request 0 / inactive
-reti		                    ; External Interrupt Request 1 / inactive
-reti                        ; Timer/Counter1 Capture Event / inactive
-reti		                    ; Timer/Counter1 Compare Match A / inactive
-reti                        ; Timer/Counter1 Overflow / inactive
-reti                        ; Timer/Counter0 Overflow / inactive
-reti                        ; USART0, Rx Complete / inactive
-reti                        ; USART0 Data Register Empty / inactive
-reti						            ; USART0, Tx Complete / inactive
-reti                        ; Analog Comparator / inactive
-reti	                      ; Pin Change Interrupt Request 0/ inactive
-reti                        ; Timer/Counter1 Compare Match B / inactive
-reti                        ; Timer/Counter0 Compare Match A / inactive
-reti                        ; Timer/Counter0 Compare Match B / inactive
-reti                        ; USI Start Condition/ inactive
-reti                        ; USI Overflow / inactive
-reti                        ; EEPROM Ready/ inactive
-reti                        ; Watchdog Timer Overflow / inactive
-reti                        ; Pin Change Interrupt Request 1 / inactive
-reti                        ; Pin Change Interrupt Request 2 / inactive
+;reti                        ; External Interrupt Request 0 / inactive
+;reti		                    ; External Interrupt Request 1 / inactive
+;reti                        ; Timer/Counter1 Capture Event / inactive
+;reti		                    ; Timer/Counter1 Compare Match A / inactive
+;reti                        ; Timer/Counter1 Overflow / inactive
+;reti                        ; Timer/Counter0 Overflow / inactive
+;reti                        ; USART0, Rx Complete / inactive
+;reti                        ; USART0 Data Register Empty / inactive
+;reti						            ; USART0, Tx Complete / inactive
+;reti                        ; Analog Comparator / inactive
+;reti	                      ; Pin Change Interrupt Request 0/ inactive
+;reti                        ; Timer/Counter1 Compare Match B / inactive
+;reti                        ; Timer/Counter0 Compare Match A / inactive
+;reti                        ; Timer/Counter0 Compare Match B / inactive
+;reti                        ; USI Start Condition/ inactive
+;reti                        ; USI Overflow / inactive
+;reti                        ; EEPROM Ready/ inactive
+;reti                        ; Watchdog Timer Overflow / inactive
+;reti                        ; Pin Change Interrupt Request 1 / inactive
+;reti                        ; Pin Change Interrupt Request 2 / inactive
 
 RESET_vect:
-  ;
-  ; INIT STACK POINTER
-  ldi tmp_r_a, low(RAMEND)
-  out SPL, tmp_r_a
+  ;========================================;
+  ;        INITIALIZE STACK POINTER        ;
+  ;========================================;
+  ldi       tmp_r_a, low(RAMEND)
+  out       SPL, tmp_r_a
 
 MCU_INIT:
-  rcall INIT_PORTS
-  rjmp LOOP
+  ;=======================================================
+  ;  POWER LED    <------------>   PD6                   ;
+  ;    - This LED is used to indicate that device        ;
+  ;       is working correctly                           ;
+  ;                                                      ;
+  ;=======================================================
+  rcall     INIT_PORTS
+
+  ;========================================;
+  ;       USI IS USED TO COMMUNICATE       ;
+  ;     WITH SHIFT REGISTER (74HC595N)     ;
+  ;========================================;
+  rcall     INIT_USI
+
+  ldi       COUNTER, 0
+  rjmp      LOOP
 
 INIT_PORTS:
-  ldi r16, (1<<LED_POWER_PORT)
-  out DDRD, r16
-  out PORTD, r16
+  ldi       r16, (1<<LED_POWER_PORT)
+  out       DDRD, r16
+  ldi       r16, (1<<CLOCK_PIN) | (1<<LATCH_PIN) | (1<<DATA_PIN)
+  out       DDRB, r16
+ret
+
+INIT_USI:
+
+ret
+
+;========================================;
+;          SEND BYTE TO 74HC595          ;
+;========================================;
+TRANSMIT_595:
+  push      r19
+  mov       r19, COUNTER
+  ldi       r16, 8
+  _TRANSMIT_595_LOOP:
+    lsl     r19
+    brcc    _TRANSMIT_595_SEND_LOW
+    brcs    _TRANSMIT_595_SEND_HIGH
+    
+    _TRANSMIT_595_SEND_HIGH:
+      sbi     PORTB, DATA_PIN
+      rjmp    _TRANSMIT_595_COMMIT
+
+    _TRANSMIT_595_SEND_LOW:
+      cbi     PORTB, DATA_PIN
+
+    _TRANSMIT_595_COMMIT:
+      sbi      PORTB, CLOCK_PIN
+      cbi      PORTB, CLOCK_PIN
+      sbi      PORTB, LATCH_PIN
+      cbi      PORTB, LATCH_PIN 
+    dec      r16
+    brne     _TRANSMIT_595_LOOP
+  pop        r19
+ret
+
+SUBPROGRAM_LED_SHIFTING:
+  rcall     TRANSMIT_595
+  inc       COUNTER
 ret
 
 ;========================================;
@@ -77,37 +134,44 @@ ret
 ;========================================;
 
 LOOP:
-  ldi r16, (1<<LED_POWER_PORT)
-  out PORTD, r16
-
-  rcall DELAY
-  rcall DELAY
-
-  ldi r16, (0<<LED_POWER_PORT)
-  out PORTD, r16
-
-  rcall DELAY
-  rcall DELAY
-
-  rjmp LOOP
+  rcall     TOGGLE_POWER_LED
+  rcall     SUBPROGRAM_LED_SHIFTING
+  rcall     DELAY
+  rjmp      LOOP
 
 DELAY:
-  ldi     r16, 255     ; 1 clock cycle
-  _DEL_1:
-    ldi   r17, 255    ; 1 clock cycle
-  _DEL_2:
-    dec   r17         ; 1 clock cycle
-    nop               ; 1 clock cycle
-    brne  _DEL_2      ; 2 clock cycle when jumping / 1 when continue 
+  push      r16
+  push      r17
+  cli
+  ldi       r16, 20    ; 1
+  _DELAY_1:
+    ldi     r17, 255   
+  _DELAY_2:
+    dec     r17         
+    nop                 
+    nop                
+    nop                 
+    brne    _DELAY_2    
 
-    dec   r16         ; 1 clock cycle
-    brne  _DEL_1      ; 2 clock cycle when jumping / 1 when continue 
+    dec     r16
+    brne    _DELAY_1    
+  sei
+
+  pop       r17
+  pop       r16
+ret                    
+
+TOGGLE_POWER_LED:
+  ldi       r16,  (1<<LED_POWER_PORT)
+  in        r17,  PORTD
+  eor       r17,  r16
+  out       PORTD, r17
 ret
 
-INFO: .DB "AVR Thermostat. Written by Sergey Yarkov 22.01.2023"
 
 ;========================================;
 ;             EEPROM SEGMENT             ;
 ;========================================;
 
-.ESEG
\ No newline at end of file
+.ESEG
+INFO:       .DB "AVR Thermostat. Written by Sergey Yarkov 22.01.2023"
\ No newline at end of file
diff --git a/firmware.eep b/firmware.eep
new file mode 100644
index 0000000..25a3b4c
--- /dev/null
+++ b/firmware.eep
@@ -0,0 +1,5 @@
+:1000000041565220544845524D4F535441542E208E
+:100010005752495454454E20425920534552474562
+:1000200059205941524B4F562032322E30312E3208
+:0300300030323338
+:00000001FF
diff --git a/firmware.hex b/firmware.hex
index 62c541f..d9d8952 100644
--- a/firmware.hex
+++ b/firmware.hex
@@ -1,11 +1,10 @@
 :020000020000FC
-:1000000014C0189518951895189518951895189561
-:100010001895189518951895189518951895189578
-:10002000189518951895189518950FED0DBF01D0D6
-:1000300004C000E401BB02BB089500E402BB06D08B
-:1000400005D000E002BB02D001D0F7CF0FEF1FEFC9
-:100050001A950000E9F70A95D1F708954156522004
-:10006000546865726D6F737461742E205772697471
-:1000700074656E20627920536572676579205961D5
-:10008000726B6F762032322E30312E3230323300A6
+:1000000000C00FED0DBF03D007D040E01AC000E4E0
+:1000100001BB07E007BB089508953F93342F08E024
+:10002000330F18F400F0C19A01C0C198C09AC0986B
+:10003000C29AC2980A95A1F73F910895EEDF4395C1
+:10004000089513D0FBDF01D0FCCF0F931F93F894DA
+:1000500004E11FEF1A95000000000000D9F70A958F
+:10006000C1F778941F910F91089500E412B31027FF
+:0400700012BB089522
 :00000001FF
diff --git a/firmware.lss b/firmware.lss
index f27c4f2..8e8fba8 100644
--- a/firmware.lss
+++ b/firmware.lss
@@ -1,5 +1,5 @@
 
-AVRASM ver. 2.2.7  firmware.asm Tue Jan 24 01:18:37 2023
+AVRASM ver. 2.2.7  firmware.asm Sat Jan 28 03:33:17 2023
 
 firmware.asm(14): Including file 'tn2313Adef.inc'
 firmware.asm(14): Including file 'tn2313Adef.inc'
@@ -719,13 +719,16 @@ firmware.asm(14): Including file 'tn2313Adef.inc'
                                  .LIST
                                  
                                  .DEF tmp_r_a = r16
+                                 .DEF COUNTER = r20
                                  
                                  ;========================================;
                                  ;                LABELS                  ;
                                  ;========================================;
                                  
-                                 .EQU LED_POWER_PORT = PD6
-                                 
+                                 .EQU LED_POWER_PORT   = PD6
+                                 .EQU CLOCK_PIN        = PB0   ; ST_CP on 74HC595
+                                 .EQU DATA_PIN         = PB1   ; DS on 74HC595
+                                 .EQU LATCH_PIN        = PB2   ; SH_CP on 74HC595
                                  
                                  ;========================================;
                                  ;              CODE SEGMENT              ;
@@ -738,108 +741,193 @@ firmware.asm(14): Including file 'tn2313Adef.inc'
                                  ;                VECTORS                 ;
                                  ;========================================;
                                  
-000000 c014                      rjmp 	RESET_vect			      ; Program start at RESET vector
-000001 9518                      reti                        ; External Interrupt Request 0 / inactive
-000002 9518                      reti		                    ; External Interrupt Request 1 / inactive
-000003 9518                      reti                        ; Timer/Counter1 Capture Event / inactive
-000004 9518                      reti		                    ; Timer/Counter1 Compare Match A / inactive
-000005 9518                      reti                        ; Timer/Counter1 Overflow / inactive
-000006 9518                      reti                        ; Timer/Counter0 Overflow / inactive
-000007 9518                      reti                        ; USART0, Rx Complete / inactive
-000008 9518                      reti                        ; USART0 Data Register Empty / inactive
-000009 9518                      reti						            ; USART0, Tx Complete / inactive
-00000a 9518                      reti                        ; Analog Comparator / inactive
-00000b 9518                      reti	                      ; Pin Change Interrupt Request 0/ inactive
-00000c 9518                      reti                        ; Timer/Counter1 Compare Match B / inactive
-00000d 9518                      reti                        ; Timer/Counter0 Compare Match A / inactive
-00000e 9518                      reti                        ; Timer/Counter0 Compare Match B / inactive
-00000f 9518                      reti                        ; USI Start Condition/ inactive
-000010 9518                      reti                        ; USI Overflow / inactive
-000011 9518                      reti                        ; EEPROM Ready/ inactive
-000012 9518                      reti                        ; Watchdog Timer Overflow / inactive
-000013 9518                      reti                        ; Pin Change Interrupt Request 1 / inactive
-000014 9518                      reti                        ; Pin Change Interrupt Request 2 / inactive
+000000 c000                      rjmp 	RESET_vect			      ; Program start at RESET vector
+                                 ;reti                        ; External Interrupt Request 0 / inactive
+                                 ;reti		                    ; External Interrupt Request 1 / inactive
+                                 ;reti                        ; Timer/Counter1 Capture Event / inactive
+                                 ;reti		                    ; Timer/Counter1 Compare Match A / inactive
+                                 ;reti                        ; Timer/Counter1 Overflow / inactive
+                                 ;reti                        ; Timer/Counter0 Overflow / inactive
+                                 ;reti                        ; USART0, Rx Complete / inactive
+                                 ;reti                        ; USART0 Data Register Empty / inactive
+                                 ;reti						            ; USART0, Tx Complete / inactive
+                                 ;reti                        ; Analog Comparator / inactive
+                                 ;reti	                      ; Pin Change Interrupt Request 0/ inactive
+                                 ;reti                        ; Timer/Counter1 Compare Match B / inactive
+                                 ;reti                        ; Timer/Counter0 Compare Match A / inactive
+                                 ;reti                        ; Timer/Counter0 Compare Match B / inactive
+                                 ;reti                        ; USI Start Condition/ inactive
+                                 ;reti                        ; USI Overflow / inactive
+                                 ;reti                        ; EEPROM Ready/ inactive
+                                 ;reti                        ; Watchdog Timer Overflow / inactive
+                                 ;reti                        ; Pin Change Interrupt Request 1 / inactive
+                                 ;reti                        ; Pin Change Interrupt Request 2 / inactive
                                  
                                  RESET_vect:
-                                   ;
-                                   ; INIT STACK POINTER
-000015 ed0f                        ldi tmp_r_a, low(RAMEND)
-000016 bf0d                        out SPL, tmp_r_a
+                                   ;========================================;
+                                   ;        INITIALIZE STACK POINTER        ;
+                                   ;========================================;
+000001 ed0f                        ldi       tmp_r_a, low(RAMEND)
+000002 bf0d                        out       SPL, tmp_r_a
                                  
                                  MCU_INIT:
-000017 d001                        rcall INIT_PORTS
-000018 c004                        rjmp LOOP
+                                   ;=======================================================
+                                   ;  POWER LED    <------------>   PD6                   ;
+                                   ;    - This LED is used to indicate that device        ;
+                                   ;       is working correctly                           ;
+                                   ;                                                      ;
+                                   ;=======================================================
+000003 d003                        rcall     INIT_PORTS
+                                 
+                                   ;========================================;
+                                   ;       USI IS USED TO COMMUNICATE       ;
+                                   ;     WITH SHIFT REGISTER (74HC595N)     ;
+                                   ;========================================;
+000004 d007                        rcall     INIT_USI
+                                 
+000005 e040                        ldi       COUNTER, 0
+000006 c01a                        rjmp      LOOP
                                  
                                  INIT_PORTS:
-000019 e400                        ldi r16, (1<<LED_POWER_PORT)
-00001a bb01                        out DDRD, r16
-00001b bb02                        out PORTD, r16
-00001c 9508                      ret
+000007 e400                        ldi       r16, (1<<LED_POWER_PORT)
+000008 bb01                        out       DDRD, r16
+000009 e007                        ldi       r16, (1<<CLOCK_PIN) | (1<<LATCH_PIN) | (1<<DATA_PIN)
+00000a bb07                        out       DDRB, r16
+00000b 9508                      ret
+                                 
+                                 INIT_USI:
+                                 
+00000c 9508                      ret
+                                 
+                                 ;========================================;
+                                 ;          SEND BYTE TO 74HC595          ;
+                                 ;========================================;
+                                 TRANSMIT_595:
+00000d 933f                        push      r19
+00000e 2f34                        mov       r19, COUNTER
+00000f e008                        ldi       r16, 8
+                                   _TRANSMIT_595_LOOP:
+000010 0f33                          lsl     r19
+000011 f418                          brcc    _TRANSMIT_595_SEND_LOW
+000012 f000                          brcs    _TRANSMIT_595_SEND_HIGH
+                                     
+                                     _TRANSMIT_595_SEND_HIGH:
+000013 9ac1                            sbi     PORTB, DATA_PIN
+000014 c001                            rjmp    _TRANSMIT_595_COMMIT
+                                 
+                                     _TRANSMIT_595_SEND_LOW:
+000015 98c1                            cbi     PORTB, DATA_PIN
+                                 
+                                     _TRANSMIT_595_COMMIT:
+000016 9ac0                            sbi      PORTB, CLOCK_PIN
+000017 98c0                            cbi      PORTB, CLOCK_PIN
+000018 9ac2                            sbi      PORTB, LATCH_PIN
+000019 98c2                            cbi      PORTB, LATCH_PIN 
+00001a 950a                          dec      r16
+00001b f7a1                          brne     _TRANSMIT_595_LOOP
+00001c 913f                        pop        r19
+00001d 9508                      ret
+                                 
+                                 SUBPROGRAM_LED_SHIFTING:
+00001e dfee                        rcall     TRANSMIT_595
+00001f 9543                        inc       COUNTER
+000020 9508                      ret
                                  
                                  ;========================================;
                                  ;            MAIN PROGRAM LOOP           ;
                                  ;========================================;
                                  
                                  LOOP:
-00001d e400                        ldi r16, (1<<LED_POWER_PORT)
-00001e bb02                        out PORTD, r16
-                                 
-00001f d006                        rcall DELAY
-000020 d005                        rcall DELAY
-                                 
-000021 e000                        ldi r16, (0<<LED_POWER_PORT)
-000022 bb02                        out PORTD, r16
-                                 
-000023 d002                        rcall DELAY
-000024 d001                        rcall DELAY
-                                 
-000025 cff7                        rjmp LOOP
+000021 d013                        rcall     TOGGLE_POWER_LED
+000022 dffb                        rcall     SUBPROGRAM_LED_SHIFTING
+000023 d001                        rcall     DELAY
+000024 cffc                        rjmp      LOOP
                                  
                                  DELAY:
-000026 ef0f                        ldi     r16, 255     ; 1 clock cycle
-                                   _DEL_1:
-000027 ef1f                          ldi   r17, 255    ; 1 clock cycle
-                                   _DEL_2:
-000028 951a                          dec   r17         ; 1 clock cycle
-000029 0000                          nop               ; 1 clock cycle
-00002a f7e9                          brne  _DEL_2      ; 2 clock cycle when jumping / 1 when continue 
+000025 930f                        push      r16
+000026 931f                        push      r17
+000027 94f8                        cli
+000028 e104                        ldi       r16, 20    ; 1
+                                   _DELAY_1:
+000029 ef1f                          ldi     r17, 255   
+                                   _DELAY_2:
+00002a 951a                          dec     r17         
+00002b 0000                          nop                 
+00002c 0000                          nop                
+00002d 0000                          nop                 
+00002e f7d9                          brne    _DELAY_2    
                                  
-00002b 950a                          dec   r16         ; 1 clock cycle
-00002c f7d1                          brne  _DEL_1      ; 2 clock cycle when jumping / 1 when continue 
-00002d 9508                      ret
+00002f 950a                          dec     r16
+000030 f7c1                          brne    _DELAY_1    
+000031 9478                        sei
+                                 
+000032 911f                        pop       r17
+000033 910f                        pop       r16
+000034 9508                      ret                    
+                                 
+                                 TOGGLE_POWER_LED:
+000035 e400                        ldi       r16,  (1<<LED_POWER_PORT)
+000036 b312                        in        r17,  PORTD
+000037 2710                        eor       r17,  r16
+000038 bb12                        out       PORTD, r17
+000039 9508                      ret
                                  
-00002e 5641
-00002f 2052
-000030 6854
-000031 7265
-000032 6f6d
-000033 7473
-000034 7461
-000035 202e
-000036 7257
-000037 7469
-000038 6574
-000039 206e
-00003a 7962
-00003b 5320
-00003c 7265
-00003d 6567
-00003e 2079
-00003f 6159
-000040 6b72
-000041 766f
-000042 3220
-000043 2e32
-000044 3130
-000045 322e
-000046 3230
-firmware.asm(107): warning: .cseg .db misalignment - padding zero byte
-000047 0033                      INFO: .DB "AVR Thermostat. Written by Sergey Yarkov 22.01.2023"
                                  
                                  ;========================================;
                                  ;             EEPROM SEGMENT             ;
                                  ;========================================;
                                  
+                                 .ESEG
+000000 41
+000001 56
+000002 52
+000003 20
+000004 54
+000005 68
+000006 65
+000007 72
+000008 6d
+000009 6f
+00000a 73
+00000b 74
+00000c 61
+00000d 74
+00000e 2e
+00000f 20
+000010 57
+000011 72
+000012 69
+000013 74
+000014 74
+000015 65
+000016 6e
+000017 20
+000018 62
+000019 79
+00001a 20
+00001b 53
+00001c 65
+00001d 72
+00001e 67
+00001f 65
+000020 79
+000021 20
+000022 59
+000023 61
+000024 72
+000025 6b
+000026 6f
+000027 76
+000028 20
+000029 32
+00002a 32
+00002b 2e
+00002c 30
+00002d 31
+00002e 2e
+00002f 32
+000030 30
+000031 32
 
 
 RESOURCE USE INFORMATION
@@ -859,37 +947,37 @@ counted separately from r26..r31 here.
 "ATtiny2313A" register use summary:
 x  :   0 y  :   0 z  :   0 r0 :   0 r1 :   0 r2 :   0 r3 :   0 r4 :   0 
 r5 :   0 r6 :   0 r7 :   0 r8 :   0 r9 :   0 r10:   0 r11:   0 r12:   0 
-r13:   0 r14:   0 r15:   0 r16:  11 r17:   2 r18:   0 r19:   0 r20:   0 
+r13:   0 r14:   0 r15:   0 r16:  14 r17:   7 r18:   0 r19:   4 r20:   3 
 r21:   0 r22:   0 r23:   0 r24:   0 r25:   0 r26:   0 r27:   0 r28:   0 
 r29:   0 r30:   0 r31:   0 
-Registers used: 2 out of 35 (5.7%)
+Registers used: 4 out of 35 (11.4%)
 
 "ATtiny2313A" instruction use summary:
 .lds  :   0 .sts  :   0 adc   :   0 add   :   0 adiw  :   0 and   :   0 
 andi  :   0 asr   :   0 bclr  :   0 bld   :   0 brbc  :   0 brbs  :   0 
-brcc  :   0 brcs  :   0 break :   0 breq  :   0 brge  :   0 brhc  :   0 
+brcc  :   1 brcs  :   1 break :   0 breq  :   0 brge  :   0 brhc  :   0 
 brhs  :   0 brid  :   0 brie  :   0 brlo  :   0 brlt  :   0 brmi  :   0 
-brne  :   2 brpl  :   0 brsh  :   0 brtc  :   0 brts  :   0 brvc  :   0 
-brvs  :   0 bset  :   0 bst   :   0 cbi   :   0 cbr   :   0 clc   :   0 
-clh   :   0 cli   :   0 cln   :   0 clr   :   0 cls   :   0 clt   :   0 
+brne  :   3 brpl  :   0 brsh  :   0 brtc  :   0 brts  :   0 brvc  :   0 
+brvs  :   0 bset  :   0 bst   :   0 cbi   :   3 cbr   :   0 clc   :   0 
+clh   :   0 cli   :   1 cln   :   0 clr   :   0 cls   :   0 clt   :   0 
 clv   :   0 clz   :   0 com   :   0 cp    :   0 cpc   :   0 cpi   :   0 
-cpse  :   0 dec   :   2 eor   :   0 icall :   0 ijmp  :   0 in    :   0 
-inc   :   0 ld    :   0 ldd   :   0 ldi   :   6 lds   :   0 lpm   :   0 
-lsl   :   0 lsr   :   0 mov   :   0 movw  :   0 neg   :   0 nop   :   1 
-or    :   0 ori   :   0 out   :   5 pop   :   0 push  :   0 rcall :   5 
-ret   :   2 reti  :  20 rjmp  :   3 rol   :   0 ror   :   0 sbc   :   0 
-sbci  :   0 sbi   :   0 sbic  :   0 sbis  :   0 sbiw  :   0 sbr   :   0 
-sbrc  :   0 sbrs  :   0 sec   :   0 seh   :   0 sei   :   0 sen   :   0 
+cpse  :   0 dec   :   3 eor   :   1 icall :   0 ijmp  :   0 in    :   1 
+inc   :   1 ld    :   0 ldd   :   0 ldi   :   8 lds   :   0 lpm   :   0 
+lsl   :   1 lsr   :   0 mov   :   1 movw  :   0 neg   :   0 nop   :   3 
+or    :   0 ori   :   0 out   :   4 pop   :   3 push  :   3 rcall :   6 
+ret   :   6 reti  :   0 rjmp  :   4 rol   :   0 ror   :   0 sbc   :   0 
+sbci  :   0 sbi   :   3 sbic  :   0 sbis  :   0 sbiw  :   0 sbr   :   0 
+sbrc  :   0 sbrs  :   0 sec   :   0 seh   :   0 sei   :   1 sen   :   0 
 ser   :   0 ses   :   0 set   :   0 sev   :   0 sez   :   0 sleep :   0 
 spm   :   0 st    :   0 std   :   0 sts   :   0 sub   :   0 subi  :   0 
 swap  :   0 tst   :   0 wdr   :   0 
-Instructions used: 9 out of 105 (8.6%)
+Instructions used: 21 out of 105 (20.0%)
 
 "ATtiny2313A" memory use summary [bytes]:
 Segment   Begin    End      Code   Data   Used    Size   Use%
 ---------------------------------------------------------------
-[.cseg] 0x000000 0x000090     92     52    144    2048   7.0%
+[.cseg] 0x000000 0x000074    116      0    116    2048   5.7%
 [.dseg] 0x000060 0x000060      0      0      0     128   0.0%
-[.eseg] 0x000000 0x000000      0      0      0     128   0.0%
+[.eseg] 0x000000 0x000033      0     51     51     128  39.8%
 
-Assembly complete, 0 errors, 1 warnings
+Assembly complete, 0 errors, 0 warnings
diff --git a/firmware.lst b/firmware.lst
index 677f564..42d2fbc 100644
--- a/firmware.lst
+++ b/firmware.lst
@@ -5,7 +5,7 @@ Path:        /home/sergeyyarkov/Documents/Applications/attiny2313a_thermostat/
 Source file: firmware.asm
 Hex file:    firmware.hex
 Eeprom file: firmware.eep
-Compiled:    24.01.2023, 01:15:04
+Compiled:    28.01.2023, 02:47:03
 Pass:        2
 
      1: ;
@@ -28,136 +28,207 @@ Pass:        2
     15: .LIST
     16: 
     17: .DEF tmp_r_a = r16
-    18: 
-    19: ;========================================;
-    20: ;                LABELS                  ;
-    21: ;========================================;
-    22: 
-    23: .EQU LED_POWER_PORT = PD6
-    24: 
-    25: 
-    26: ;========================================;
-    27: ;              CODE SEGMENT              ;
-    28: ;========================================;
-    29: 
-    30: .CSEG
-    31: .ORG 0x00
+    18: .DEF COUNTER = r20
+    19: 
+    20: ;========================================;
+    21: ;                LABELS                  ;
+    22: ;========================================;
+    23: 
+    24: .EQU LED_POWER_PORT   = PD6
+    25: .EQU CLOCK_PIN        = PB0   ; ST_CP on 74HC595
+    26: .EQU LATCH_PIN        = PB1   ; SH_CP on 74HC595
+    27: .EQU DATA_PIN         = PB2   ; DS on 74HC595
+    28: 
+    29: ;========================================;
+    30: ;              CODE SEGMENT              ;
+    31: ;========================================;
     32: 
-    33: ;========================================;
-    34: ;                VECTORS                 ;
-    35: ;========================================;
-    36: 
-    37: 000000   C014  rjmp 	RESET_vect			      ; Program start at RESET vector
-    38: 000001   9518  reti                        ; External Interrupt Request 0 / inactive
-    39: 000002   9518  reti		                    ; External Interrupt Request 1 / inactive
-    40: 000003   9518  reti                        ; Timer/Counter1 Capture Event / inactive
-    41: 000004   9518  reti		                    ; Timer/Counter1 Compare Match A / inactive
-    42: 000005   9518  reti                        ; Timer/Counter1 Overflow / inactive
-    43: 000006   9518  reti                        ; Timer/Counter0 Overflow / inactive
-    44: 000007   9518  reti                        ; USART0, Rx Complete / inactive
-    45: 000008   9518  reti                        ; USART0 Data Register Empty / inactive
-    46: 000009   9518  reti						            ; USART0, Tx Complete / inactive
-    47: 00000A   9518  reti                        ; Analog Comparator / inactive
-    48: 00000B   9518  reti	                      ; Pin Change Interrupt Request 0/ inactive
-    49: 00000C   9518  reti                        ; Timer/Counter1 Compare Match B / inactive
-    50: 00000D   9518  reti                        ; Timer/Counter0 Compare Match A / inactive
-    51: 00000E   9518  reti                        ; Timer/Counter0 Compare Match B / inactive
-    52: 00000F   9518  reti                        ; USI Start Condition/ inactive
-    53: 000010   9518  reti                        ; USI Overflow / inactive
-    54: 000011   9518  reti                        ; EEPROM Ready/ inactive
-    55: 000012   9518  reti                        ; Watchdog Timer Overflow / inactive
-    56: 000013   9518  reti                        ; Pin Change Interrupt Request 1 / inactive
-    57: 000014   9518  reti                        ; Pin Change Interrupt Request 2 / inactive
-    58: 
-    59: RESET_vect:
-    60:   ;
-    61:   ; INIT STACK POINTER
-    62: 000015   ED0F  ldi tmp_r_a, low(RAMEND)
-    63: 000016   BF0D  out SPL, tmp_r_a
-    64: 
-    65: MCU_INIT:
-    66: 000017   D001  rcall INIT_PORTS
-    67: 000018   C004  rjmp LOOP
+    33: .CSEG
+    34: .ORG 0x00
+    35: 
+    36: ;========================================;
+    37: ;                VECTORS                 ;
+    38: ;========================================;
+    39: 
+    40: 000000   C000  rjmp 	RESET_vect			      ; Program start at RESET vector
+    41: ;reti                        ; External Interrupt Request 0 / inactive
+    42: ;reti		                    ; External Interrupt Request 1 / inactive
+    43: ;reti                        ; Timer/Counter1 Capture Event / inactive
+    44: ;reti		                    ; Timer/Counter1 Compare Match A / inactive
+    45: ;reti                        ; Timer/Counter1 Overflow / inactive
+    46: ;reti                        ; Timer/Counter0 Overflow / inactive
+    47: ;reti                        ; USART0, Rx Complete / inactive
+    48: ;reti                        ; USART0 Data Register Empty / inactive
+    49: ;reti						            ; USART0, Tx Complete / inactive
+    50: ;reti                        ; Analog Comparator / inactive
+    51: ;reti	                      ; Pin Change Interrupt Request 0/ inactive
+    52: ;reti                        ; Timer/Counter1 Compare Match B / inactive
+    53: ;reti                        ; Timer/Counter0 Compare Match A / inactive
+    54: ;reti                        ; Timer/Counter0 Compare Match B / inactive
+    55: ;reti                        ; USI Start Condition/ inactive
+    56: ;reti                        ; USI Overflow / inactive
+    57: ;reti                        ; EEPROM Ready/ inactive
+    58: ;reti                        ; Watchdog Timer Overflow / inactive
+    59: ;reti                        ; Pin Change Interrupt Request 1 / inactive
+    60: ;reti                        ; Pin Change Interrupt Request 2 / inactive
+    61: 
+    62: RESET_vect:
+    63:   ;========================================;
+    64:   ;        INITIALIZE STACK POINTER        ;
+    65:   ;========================================;
+    66: 000001   ED0F  ldi       tmp_r_a, low(RAMEND)
+    67: 000002   BF0D  out       SPL, tmp_r_a
     68: 
-    69: INIT_PORTS:
-    70: 000019   E400  ldi r16, (1<<LED_POWER_PORT)
-    71: 00001A   BB01  out DDRD, r16
-    72: 00001B   BB02  out PORTD, r16
-    73: 00001C   9508  ret
-    74: 
-    75: ;========================================;
-    76: ;            MAIN PROGRAM LOOP           ;
-    77: ;========================================;
-    78: 
-    79: LOOP:
-    80: 00001D   E400  ldi r16, (1<<LED_POWER_PORT)
-    81: 00001E   BB02  out PORTD, r16
-    82: 
-    83: 00001F   D006  rcall DELAY
-    84: 000020   D005  rcall DELAY
+    69: MCU_INIT:
+    70:   ;=======================================================
+    71:   ;  POWER LED    <------------>   PD6                   ;
+    72:   ;    - This LED is used to indicate that device        ;
+    73:   ;       is working correctly                           ;
+    74:   ;                                                      ;
+    75:   ;=======================================================
+    76: 000003   D002  rcall     INIT_PORTS
+    77: 
+    78:   ;========================================;
+    79:   ;       USI IS USED TO COMMUNICATE       ;
+    80:   ;     WITH SHIFT REGISTER (74HC595N)     ;
+    81:   ;========================================;
+    82: 000004   D006  rcall     INIT_USI
+    83:   
+    84: 000005   C01D  rjmp      LOOP
     85: 
-    86: 000021   E000  ldi r16, (0<<LED_POWER_PORT)
-    87: 000022   BB02  out PORTD, r16
-    88: 
-    89: 000023   D002  rcall DELAY
-    90: 000024   D001  rcall DELAY
-    91: 
-    92: 000025   CFF7  rjmp LOOP
-    93: 
-    94: DELAY:
-    95: 000026   E302  ldi     r16, 50     ; 1 clock cycle
-    96:   _DEL_1:
-    97: 000027   EF1F  ldi   r17, 255    ; 1 clock cycle
-    98:   _DEL_2:
-    99: 000028   951A  dec   r17         ; 1 clock cycle
-   100: 000029   0000  nop               ; 1 clock cycle
-   101: 00002A   F7E9  brne  _DEL_2      ; 2 clock cycle when jumping / 1 when continue 
-   102: 
-   103: 00002B   950A  dec   r16         ; 1 clock cycle
-   104: 00002C   F7D1  brne  _DEL_1      ; 2 clock cycle when jumping / 1 when continue 
-   105: 00002D   9508  ret
-   106: 
-   107: INFO: .DB "AVR Thermostat. Written by Sergey Yarkov 22.01.2023"
- -> Warning 004: Number of bytes on line is odd, added 00 to fit program memory!
-   File: /home/sergeyyarkov/Documents/Applications/attiny2313a_thermostat/firmware.asm, Line: 107
-   Source line: INFO: .DB "AVR Thermostat. Written by Sergey Yarkov 22.01.2023"
-        00002E 5641 2052 4854 5245
-        000032 4F4D 5453 5441 202E
-        000036 5257 5449 4554 204E
-        00003A 5942 5320 5245 4547
-        00003E 2059 4159 4B52 564F
-        000042 3220 2E32 3130 322E
-        000046 3230 0033
-   108: 
-   109: ;========================================;
-   110: ;             EEPROM SEGMENT             ;
-   111: ;========================================;
-   112: 
-   113: .ESEG
+    86: INIT_PORTS:
+    87: 000006   E400  ldi       r16, (1<<LED_POWER_PORT)
+    88: 000007   BB01  out       DDRD, r16
+    89: 000008   E007  ldi       r16, (1<<CLOCK_PIN) | (1<<LATCH_PIN) | (1<<DATA_PIN)
+    90: 000009   BB07  out       DDRB, r16
+    91: 00000A   9508  ret
+    92: 
+    93: INIT_USI:
+    94: 
+    95: 00000B   9508  ret
+    96: 
+    97: CLOCK_595:
+    98: 00000C   930F  push      r16
+    99: 00000D   E001  ldi       r16,  (1<<CLOCK_PIN)
+   100: 00000E   B318  in        r17,  PORTB
+   101: 00000F   2710  eor       r17,  r16
+   102: 000010   BB18  out       PORTB, r17
+   103: 000011   910F  pop       r16
+   104: 000012   9508  ret
+   105: 
+   106: TRANSMIT_595:
+   107: 000013   933F  push      r19
+   108: 000014   E23A  ldi       r19, 0b00101010 ; Data to transmit
+   109: 000015   E008  ldi       r16, 8
+   110:   _TRANSMIT_595_LOOP:
+   111: 000016   0F33  lsl     r19
+   112: 000017   F410  brcc    _TRANSMIT_595_SEND_LOW
+   113: 000018   F000  brcs    _TRANSMIT_595_SEND_HIGH
+   114:     
+   115:     _TRANSMIT_595_SEND_HIGH:
+   116: 000019   C000  rjmp    _TRANSMIT_595_PROCEED
+   117:       
+   118: 
+   119:     _TRANSMIT_595_SEND_LOW:
+   120: 
+   121:     _TRANSMIT_595_PROCEED:
+   122: 00001A   DFF1  rcall    CLOCK_595
+   123: 00001B   DFF0  rcall    CLOCK_595
+   124: 00001C   950A  dec     r16
+   125: 00001D   F7C1  brne _TRANSMIT_595_LOOP
+   126: 00001E   913F  pop       r19
+   127: 00001F   9508  ret
+   128: 
+   129: SUBPROGRAM_LED_SHIFTING:
+   130: 000020   9543  inc       COUNTER
+   131: 000021   DFF1  rcall     TRANSMIT_595
+   132: 000022   9508  ret
+   133: 
+   134: ;========================================;
+   135: ;            MAIN PROGRAM LOOP           ;
+   136: ;========================================;
+   137: 
+   138: LOOP:
+   139: 000023   D00F  rcall     TOGGLE_POWER_LED
+   140: 000024   DFFB  rcall     SUBPROGRAM_LED_SHIFTING
+   141: 000025   D001  rcall     DELAY
+   142: 000026   CFFC  rjmp      LOOP
+   143: 
+   144: DELAY:
+   145: 000027   94F8  cli
+   146: 000028   E00A  ldi       r16, 10    ; 1
+   147:   _DELAY_1:
+   148: 000029   EF1F  ldi     r17, 255    ; 1
+   149:   _DELAY_2:
+   150: 00002A   951A  dec     r17         ; 1
+   151: 00002B   0000  nop                 ; 1
+   152: 00002C   0000  nop                 ; 1
+   153: 00002D   0000  nop                 ; 1
+   154: 00002E   F7D9  brne    _DELAY_2    ; 2/1
+   155: 
+   156: 00002F   950A  dec     r16
+   157: 000030   F7C1  brne    _DELAY_1    ; 2/1
+   158: 000031   9478  sei
+   159: 000032   9508  ret                     ; 4
+   160: 
+   161: TOGGLE_POWER_LED:
+   162: 000033   E400  ldi       r16,  (1<<LED_POWER_PORT)
+   163: 000034   B312  in        r17,  PORTD
+   164: 000035   2710  eor       r17,  r16
+   165: 000036   BB12  out       PORTD, r17
+   166: 000037   9508  ret
+   167: 
+   168: 
+   169: ;========================================;
+   170: ;             EEPROM SEGMENT             ;
+   171: ;========================================;
+   172: 
+   173: .ESEG
+   174: INFO:       .DB "AVR Thermostat. Written by Sergey Yarkov 22.01.2023"
+        000000 41 56 52 20 54 48 45 52
+        000008 4D 4F 53 54 41 54 2E 20
+        000010 57 52 49 54 54 45 4E 20
+        000018 42 59 20 53 45 52 47 45
+        000020 59 20 59 41 52 4B 4F 56
+        000028 20 32 32 2E 30 31 2E 32
+        000030 30 32 33
 
 List of symbols:
 Type nDef nUsed             Decimalval           Hexval Name
   T     1     1                     89               59 ATTINY2313A
-  L     1     2                     21               15 RESET_VECT
-  L     1     0                     23               17 MCU_INIT
-  L     1     2                     25               19 INIT_PORTS
-  L     1     4                     29               1D LOOP
-  L     1     8                     38               26 DELAY
-  L     1     2                     39               27 _DEL_1
-  L     1     2                     40               28 _DEL_2
-  L     1     0                     46               2E INFO
+  L     1     2                      1               01 RESET_VECT
+  L     1     0                      3               03 MCU_INIT
+  L     1     2                      6               06 INIT_PORTS
+  L     1     2                     11               0B INIT_USI
+  L     1     4                     12               0C CLOCK_595
+  L     1     2                     19               13 TRANSMIT_595
+  L     1     2                     22               16 _TRANSMIT_595_LOOP
+  L     1     2                     25               19 _TRANSMIT_595_SEND_HIGH
+  L     1     2                     26               1A _TRANSMIT_595_SEND_LOW
+  L     1     2                     26               1A _TRANSMIT_595_PROCEED
+  L     1     2                     32               20 SUBPROGRAM_LED_SHIFTING
+  L     1     4                     35               23 LOOP
+  L     1     2                     39               27 DELAY
+  L     1     2                     41               29 _DELAY_1
+  L     1     2                     42               2A _DELAY_2
+  L     1     2                     51               33 TOGGLE_POWER_LED
+  L     1     0                      0               00 INFO
   R     1     2                     16               10 TMP_R_A
+  R     1     1                     20               14 COUNTER
   C     1     0                     23               17 NOW_Y
   C     1     0                      1               01 NOW_M
-  C     1     0                     24               18 NOW_D
-  C     1     0                  44950             AF96 NOW_I
-  C     1     3                      6               06 LED_POWER_PORT
+  C     1     0                     28               1C NOW_D
+  C     1     0                  44954             AF9A NOW_I
+  C     1     2                      6               06 LED_POWER_PORT
+  C     1     2                      0               00 CLOCK_PIN
+  C     1     1                      1               01 LATCH_PIN
+  C     1     1                      2               02 DATA_PIN
    No macros.
 
-Program             :       46 words.
-Constants           :       26 words.
-Total program memory:       72 words.
-Eeprom space        :        0 bytes.
+Program             :       56 words.
+Constants           :        0 words.
+Total program memory:       56 words.
+Eeprom space        :       51 bytes.
 Data segment        :        0 bytes.
 Compilation completed, no errors.
-Compilation ended 24.01.2023, 01:15:04
+Compilation ended 28.01.2023, 02:47:03
diff --git a/firmware.pro b/firmware.pro
index 1ec55c5..62b10af 100644
--- a/firmware.pro
+++ b/firmware.pro
@@ -1,11 +1,10 @@
 /avr_sim_project_file
 /home/sergeyyarkov/Documents/Applications/attiny2313a_thermostat/firmware.asm
 mainasm=firmware.asm
-file=firmware.lst,98,9,55
+file=firmware.lst,120,20,63
 file=firmware.asm,1,1,1
 clock=12000000, Div8
 device-type=ATtiny2313A
 device-package=20-pin-PDIP_SOIC
-include=firmware.asm B89
-windows=acepstwz
+windows=acePStwz
 alert1=0,0,-1,-1,,0,0