gavrasm Gerd's AVR assembler version 5.4 (C)2022 by DG4FAC
----------------------------------------------------------

Path:        /home/sergeyyarkov/Documents/Applications/attiny2313a_thermostat/
Source file: firmware.asm
Hex file:    firmware.hex
Eeprom file: firmware.eep
Compiled:    25.02.2023, 10:41:03
Pass:        2

     1: ;
     2: ; Project name: thermostat
     3: ; Description: Electronic thermostat on AVR Microcontroller
     4: ; Source code: https://github.com/sergeyyarkov/attiny2313a_thermostat
     5: ; Device: ATtiny2313A
     6: ; Device Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/doc8246.pdf
     7: ; Package: SOIC-20W_7.5x12.8mm_P1.27mm
     8: ; Assembler: AVR macro assembler 2.2.7
     9: ; Clock frequency: 8 MHz External Crystal Oscillator
    10: ; Fuses: lfuse: 0xCF, hfuse: 0x9F, efuse: 0xFF, lock: 0xFF
    11: ;
    12: ; Written by Sergey Yarkov 22.01.2023
    13: 
    14: .INCLUDE "tn2313Adef.inc"
 -> Warning 009: Include defs not necessary, using internal values!
   File: /home/sergeyyarkov/Documents/Applications/attiny2313a_thermostat/firmware.asm, Line: 14
   Source line: .INCLUDE "tn2313Adef.inc"
    15: .LIST
    16: 
    17: .DEF TEMP_REG_A       = r16
    18: .DEF TEMP_REG_B       = r17
    19: 
    20: ;========================================;
    21: ;                LABELS                  ;
    22: ;========================================;
    23: 
    24: .EQU DISPLAY_1_PIN              = PD2
    25: .EQU DISPLAY_2_PIN              = PD3
    26: .EQU DISPLAY_3_PIN              = PD4
    27: .EQU DISPLAY_4_PIN              = PD5
    28: 
    29: .EQU LED_POWER_PIN              = PD6
    30: 
    31: .EQU USI_LATCH_PIN              = PB0         ; ST_CP on 74HC595
    32: .EQU USI_DO_PIN                 = PB6         ; DS on 74HC595
    33: .EQU USI_CLK_PIN                = PB7         ; SH_CP on 74HC595
    34: 
    35: ;========================================;
    36: ;              DATA SEGMENT              ;
    37: ;========================================;
    38: .DSEG
    39: .ORG SRAM_START
    40: 
    41: DISPLAY_DIGIT: .BYTE 4
    42: 
    43: ;========================================;
    44: ;              CODE SEGMENT              ;
    45: ;========================================;
    46: 
    47: .CSEG
    48: .ORG 0x00
    49: 
    50: ;========================================;
    51: ;                VECTORS                 ;
    52: ;========================================;
    53: 
    54: 000000   C000  rjmp 	RESET_vect			       ; Program start at RESET vector
    55: ;reti                         ; External Interrupt Request 0 / inactive
    56: ;reti		                      ; External Interrupt Request 1 / inactive
    57: ;reti                         ; Timer/Counter1 Capture Event / inactive
    58: ;reti		                      ; Timer/Counter1 Compare Match A / inactive
    59: ;reti                         ; Timer/Counter1 Overflow / inactive
    60: ;reti                         ; Timer/Counter0 Overflow / inactive
    61: ;reti                         ; USART0, Rx Complete / inactive
    62: ;reti                         ; USART0 Data Register Empty / inactive
    63: ;reti						              ; USART0, Tx Complete / inactive
    64: ;reti                         ; Analog Comparator / inactive
    65: ;reti	                        ; Pin Change Interrupt Request 0/ inactive
    66: ;reti                         ; Timer/Counter1 Compare Match B / inactive
    67: ;reti                         ; Timer/Counter0 Compare Match A / inactive
    68: ;reti                         ; Timer/Counter0 Compare Match B / inactive
    69: ;reti                         ; USI Start Condition/ inactive
    70: ;reti                         ; USI Overflow / inactive
    71: ;reti                         ; EEPROM Ready/ inactive
    72: ;reti                         ; Watchdog Timer Overflow / inactive
    73: ;reti                         ; Pin Change Interrupt Request 1 / inactive
    74: ;reti                         ; Pin Change Interrupt Request 2 / inactive
    75: 
    76: RESET_vect:
    77:   ;========================================;
    78:   ;        INITIALIZE STACK POINTER        ;
    79:   ;========================================;
    80: 000001   ED0F  ldi       TEMP_REG_A, LOW(RAMEND)
    81: 000002   BF0D  out       SPL, TEMP_REG_A
    82: 
    83: MCU_INIT:
    84:   ;=======================================================;
    85:   ;               INITIALIZE PORTS                        ;
    86:   ;                                                       ;
    87:   ;  POWER LED          <------------->   OUT PD6         ;
    88:   ;    - This LED is used to indicate that device         ;
    89:   ;       is working correctly                            ;
    90:   ;  7SEG DIGIT 1       <------------->   OUT PD2         ;
    91:   ;  7SEG DIGIT 2       <------------->   OUT PD3         ;
    92:   ;  7SEG DIGIT 3       <------------->   OUT PD4         ;
    93:   ;  7SEG DIGIT 4       <------------->   OUT PD5         ;
    94:   ;                                                       ;
    95:   ;  USI CLOCK PIN      <------------->   OUT PB0         ;
    96:   ;  USI DATA OUT PIN   <------------->   OUT PB6         ;
    97:   ;  USI LATCH PIN      <------------->   OUT PB7         ;
    98:   ;=======================================================;
    99: 000003   E70C  ldi       r16, (1<<LED_POWER_PIN) | (1<<DISPLAY_1_PIN) | (1<<DISPLAY_2_PIN) | (1<<DISPLAY_3_PIN) | (1<<DISPLAY_4_PIN)
   100: 000004   BB01  out       DDRD, r16
   101: 000005   EC01  ldi       r16, (1<<USI_CLK_PIN) | (1<<USI_DO_PIN) | (1<<USI_LATCH_PIN)
   102: 000006   BB07  out       DDRB, r16
   103: 000007   9A92  sbi       PORTD, PD2
   104: 000008   9A93  sbi       PORTD, PD3
   105: 000009   9A94  sbi       PORTD, PD4
   106: 00000A   9A95  sbi       PORTD, PD5
   107: 
   108: 00000B   E004  ldi       TEMP_REG_A, 4
   109: 00000C   9300  sts       DISPLAY_DIGIT, TEMP_REG_A
        00000D   0060
   110:   
   111: 00000E   E003  ldi       TEMP_REG_A, 3
   112: 00000F   9300  sts       DISPLAY_DIGIT+1, TEMP_REG_A
        000010   0061
   113: 
   114: 000011   E002  ldi       TEMP_REG_A, 2
   115: 000012   9300  sts       DISPLAY_DIGIT+2, TEMP_REG_A
        000013   0062
   116: 
   117: 000014   E001  ldi       TEMP_REG_A, 1
   118: 000015   9300  sts       DISPLAY_DIGIT+3, TEMP_REG_A
        000016   0063
   119: 
   120: 000017   2411  clr       r1
   121: 000018   E9E6  ldi	      ZL,LOW(2*DISPLAY_SYMBOLS)
   122: 000019   E0F0  ldi	      ZH,HIGH(2*DISPLAY_SYMBOLS)
   123: 
   124: 00001A   C00A  rjmp      LOOP
   125: 
   126: ;=START================================================================================================;
   127: ; Transmit byte into 74HC595 using USI
   128: ;======================================================================================================;
   129: USI_TRANSMIT:
   130: 00001B   B80F  out       USIDR, r0            ; Move byte from temp register to USI Data Register
   131: 
   132:   ; Enable USI Overflow Interrupt Flag (will be 0 if transfer is not compeleted)
   133: 00001C   E400  ldi       TEMP_REG_A, (1<<USIOIF)      
   134: 00001D   B90E  out       USISR, TEMP_REG_A
   135:   
   136:   ; Load settings of USI into temp register
   137:   ; This will setup USI to Three-wire mode, Software clock strobe (USITC) 
   138:   ; with External, positive edge and toggle USCK
   139:   ;
   140:   ; USIWM0 <--------------> USI Wire Mode
   141:   ; USICS1 <--------------> USI Clock Source Select
   142:   ; USICLK <--------------> USI Clock Strobe
   143:   ; USITC  <--------------> USI Toggle Clock (Enable clock generation)      
   144: 00001E   E10B  ldi       TEMP_REG_A, (1<<USIWM0) | (1<<USICS1) | (1<<USICLK) | (1<<USITC)
   145:   
   146:   _USI_TRANSMIT_LOOP:             ; Execute loop when USIOIF is 0
   147: 00001F   B90D  out       USICR, TEMP_REG_A   ; Load settings from temp register into USI Control Register
   148: 000020   9B76  sbis      USISR, USIOIF       ; If transfer is comleted then move out of loop
   149: 000021   CFFD  rjmp      _USI_TRANSMIT_LOOP
   150: 
   151:   ; Send pulse into LATCH pin. 
   152:   ; This will copy byte from 74hc595 shift register into 74hc595 storage register
   153: 000022   9AC0  sbi      PORTB, USI_LATCH_PIN
   154: 000023   98C0  cbi      PORTB, USI_LATCH_PIN
   155: 000024   9508  ret
   156: ;=END==================================================================================================;
   157: 
   158: ; .MACRO DISPLAY_SEND
   159: ;   ldi       TEMP_REG_A, @0
   160: ;   mov       r0, TEMP_REG_A
   161: ;   rcall     USI_TRANSMIT
   162: ; .ENDMACRO
   163: 
   164: ;========================================;
   165: ;            MAIN PROGRAM LOOP           ;
   166: ;========================================;
   167: 
   168: LOOP:
   169: 000025   D020  rcall     TOGGLE_POWER_LED
   170: 
   171: 000026   E01A  ldi       TEMP_REG_B, 10
   172: 000027   1611  cp        r1, TEMP_REG_B
   173: 000028   F40C  brge      RESET_POINTER
   174: 000029   C003  rjmp      DISPLAY_SEND
   175: 
   176:   RESET_POINTER:
   177: 00002A   2411  clr r1
   178: 00002B   E9E6  ldi	ZL,LOW(2*DISPLAY_SYMBOLS)
   179: 00002C   E0F0  ldi	ZH,HIGH(2*DISPLAY_SYMBOLS)
   180: 
   181:   DISPLAY_SEND:
   182: 00002D   9005  lpm	      r0, Z+
   183: 00002E   9413  inc       r1
   184: 00002F   DFEB  rcall     USI_TRANSMIT
   185: 
   186: 000030   D005  rcall     DELAY
   187: 000031   D004  rcall     DELAY
   188: 000032   D003  rcall     DELAY
   189: 000033   D002  rcall     DELAY
   190: 000034   D001  rcall     DELAY
   191: 
   192: 000035   CFEF  rjmp      LOOP
   193: 
   194: DELAY:
   195: 000036   930F  push      r16
   196: 000037   931F  push      r17
   197: 000038   94F8  cli
   198: 000039   EF0F  ldi       r16, 255
   199:   _DELAY_1:
   200: 00003A   EF1F  ldi     r17, 255   
   201:   _DELAY_2:
   202: 00003B   951A  dec     r17         
   203: 00003C   0000  nop                 
   204: 00003D   0000  nop                
   205: 00003E   0000  nop                 
   206: 00003F   F7D9  brne    _DELAY_2    
   207: 
   208: 000040   950A  dec     r16
   209: 000041   F7C1  brne    _DELAY_1    
   210: 000042   9478  sei
   211: 
   212: 000043   911F  pop       r17
   213: 000044   910F  pop       r16
   214: 000045   9508  ret                    
   215: 
   216: TOGGLE_POWER_LED:
   217: 000046   E400  ldi       r16,  (1<<LED_POWER_PIN)
   218: 000047   B312  in        r17,  PORTD
   219: 000048   2710  eor       r17,  r16
   220: 000049   BB12  out       PORTD, r17
   221: 00004A   9508  ret
   222: 
   223: DISPLAY_SYMBOLS:
   224:       ; HGFEDCBA    HGFEDCBA
   225:   .DB 0b11000000, 0b11111001          ; 0, 1
        00004B F9C0
   226:   .DB 0b10100100, 0b10110000          ; 2, 3
        00004C B0A4
   227:   .DB 0b10011001, 0b10010010          ; 4, 5
        00004D 9299
   228:   .DB 0b10000010, 0b11111000          ; 6, 7
        00004E F882
   229:   .DB 0b10000000, 0b10010000          ; 8, 9
        00004F 9080
   230: 
   231: ;========================================;
   232: ;             EEPROM SEGMENT             ;
   233: ;========================================;
   234: 
   235: .ESEG
   236: 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     4                     96               60 DISPLAY_DIGIT
  L     1     2                      1               01 RESET_VECT
  L     1     0                      3               03 MCU_INIT
  L     1     2                     27               1B USI_TRANSMIT
  L     1     2                     31               1F _USI_TRANSMIT_LOOP
  L     1     4                     37               25 LOOP
  L     1     2                     42               2A RESET_POINTER
  L     1     2                     45               2D DISPLAY_SEND
  L     1    10                     54               36 DELAY
  L     1     2                     58               3A _DELAY_1
  L     1     2                     59               3B _DELAY_2
  L     1     2                     70               46 TOGGLE_POWER_LED
  L     1     4                     75               4B DISPLAY_SYMBOLS
  L     1     0                      0               00 INFO
  R     1    14                     16               10 TEMP_REG_A
  R     1     2                     17               11 TEMP_REG_B
  C     1     0                     23               17 NOW_Y
  C     1     0                      2               02 NOW_M
  C     1     0                     25               19 NOW_D
  C     1     0                  44982             AFB6 NOW_I
  C     1     1                      2               02 DISPLAY_1_PIN
  C     1     1                      3               03 DISPLAY_2_PIN
  C     1     1                      4               04 DISPLAY_3_PIN
  C     1     1                      5               05 DISPLAY_4_PIN
  C     1     2                      6               06 LED_POWER_PIN
  C     1     3                      0               00 USI_LATCH_PIN
  C     1     1                      6               06 USI_DO_PIN
  C     1     1                      7               07 USI_CLK_PIN
   No macros.

Program             :       75 words.
Constants           :        5 words.
Total program memory:       80 words.
Eeprom space        :       51 bytes.
Data segment        :        4 bytes.
Compilation completed, no errors.
Compilation ended 25.02.2023, 10:41:03