Nios II DE2-115 containing a Nios II processor

[lj4]

hello,

Im writing a code for a project but im encountering errors that i cant solve

Heres the code: 

.global _start

.equ LEDS_BASE_ADDR, 0x10000000

.equ SEVEN_SEG_BASE_ADDR, 0x10000020

.equ PUSH_BUTTONS_ADDR, 0x10000050

.equ SWITCHES_ADDR, 0x10000040

.equ START_RESUME_MASK, 0x01

.equ SET_MASK, 0x02

.equ RESET_MASK, 0x04

.equ CLK_FREQ, 50000000

.equ CLK_DIV, CLK_FREQ / 100

.equ MAX_TIME, 9999999

 .data

    centisecond_counter: .word

    lap_time: .word 

    lap_mode: .byte 

    start_resume_state: .byte 

    set_state: .byte 

    reset_state: .byte 

 .data

    .global centisecond_counter

    .global lap_time 

    .global lap_mode

   .global  start_resume_state

    .global set_state

    .global reset_state

.section .bss

display_hours: .byte 0

display_minutes: .byte 0

display_seconds: .byte 0

display_centiseconds: .byte 0

 .text

_start:

    # Initialization

    # Set up IO devices registers

main_loop:

    # Clock division

    call clock_division

    # Display update

    call display_update

    # Button handling

    call button_handling

    # Lap time logic

    call lap_time_logic

    # Loop back to main loop

    jmp main_loop

clock_division:

    movia r2, CLK_DIV

clock_division_loop:

    subi r2, r2, 1

    bne r2, zero, clock_division_loop

    ldw r3, (centisecond_counter)

    addi r3, r3, 1

    stw r3, (centisecond_counter)

    ret

display_update:

    # Convert counters to display format

    # Update 7-segment displays

    # Update LEDs with current count

    ldb r4, (reset_state)

    beq r4, zero, display_reset_mode

    ldb r4, (lap_mode)

    beq r4, zero, display_lap_mode

    ldw r4, (centisecond_counter)

    call display_time

    ret

display_reset_mode:

    # Display 'R' on HEX0

    movi r4, 'R'

    sth r4, (SEVEN_SEG_BASE_ADDR)

    ret

display_lap_mode:

    # Display 'L' on HEX0

    movi r4, 'L'

    sth r4, (SEVEN_SEG_BASE_ADDR)

    ret

display_time:

    # Convert centiseconds to hours, minutes, seconds, and centiseconds

    movi r6, 100 # Centiseconds per second

    movi r7, 60  # Seconds per minute

    movi r8, 60  # Minutes per hour

    ldw r5, (centisecond_counter)

    # Calculate hours

    mov r9, r5  # Copy centiseconds to r9

    div r9, r5, r8       # r9 = r5 / (60 * 60)

    stb r9, (display_hours) # Store hours

    # Calculate minutes

    mov r10, r5  # Copy centiseconds to r10

    div r10, r10, r8  # r10 = r5 / (60 * 60)

    mul r10, r10, r8  # r10 = r10 * (60 * 60)

    sub r9, r5, r10  # r9 = r5 - r10

    div r9, r9, r7       # r9 = r9 / 60

    stb r9, (display_minutes) # Store minutes

    # Calculate seconds

    mov r10, r9  # Copy minutes to r10

    div r10, r9, r7  # r10 = r9 / 60

    mul r10, r10, r7  # r10 = r10 * 60

    sub r9, r9, r10  # r9 = r9 - r10

    stb r9, (display_seconds) # Store seconds

    # Calculate centiseconds

    div r9, r6, r9  # r9 = r9 / 100

    stb r9, (display_centiseconds) # Store centiseconds

    movia r9, SEVEN_SEG_BASE_ADDR

    sth sth display_hours, 0(r9)

    sth display_minutes, 2(r9)

    sth display_seconds, 4(r9)

    sth display_centiseconds, 6(r9)

    ret

button_handling:

    ldw r10, (PUSH_BUTTONS_ADDR)

    andi r11, r10, START_RESUME_MASK

    beq r11, zero, start_resume_pressed

    andi r11, r10, SET_MASK

    beq r11, zero, set_pressed

    andi r11, r10, RESET_MASK

    beq r11, zero, reset_pressed

    ret

start_resume_pressed:

    ldb r11, 0(start_resume_state)

    beq r11, zero, start_stopwatch

    ret

start_stopwatch:

    movi r11, 1

    stb r11, (start_resume_state)

    ret

set_pressed:

    ldb r11, (lap_mode)

    xori r11, r11, 1

    stb r11, (lap_mode)

    ret

reset_pressed:

    movi r11, 0

    stw r11, (centisecond_counter)

    stb r11, (lap_mode)

    stb r11, (start_resume_state)

    stb r11, (set_state)

    movi r11, 1

    stb r11, (reset_state)

    ret

lap_time_logic:

    ret

These are the errors im getting after attempting to compile: 

work/asm9kvLzB.s: Assembler messages: work/asm9kvLzB.s:57: Error: unknown register main_loop

work/asm9kvLzB.s:65: Error: unknown register centisecond_counter

work/asm9kvLzB.s:67: Error: unknown register centisecond_counter

work/asm9kvLzB.s:76: Error: unknown register reset_state

work/asm9kvLzB.s:79: Error: unknown register lap_mode

work/asm9kvLzB.s:82: Error: unknown register centisecond_counter

work/asm9kvLzB.s:89: Error: unknown register SEVEN_SEG_BASE_ADDR

work/asm9kvLzB.s:95: Error: unknown register SEVEN_SEG_BASE_ADDR work/asm9kvLzB.s:104: Error: unknown register centisecond_counter

work/asm9kvLzB.s:109: Error: unknown register display_hours

work/asm9kvLzB.s:117: Error: unknown register display_minutes

work/asm9kvLzB.s:124: Error: unknown register display_seconds

work/asm9kvLzB.s:128: Error: unknown register display_centiseconds

work/asm9kvLzB.s:132: Error: unknown register sth display_hours

work/asm9kvLzB.s:133: Error: unknown register display_minutes

work/asm9kvLzB.s:134: Error: unknown register display_seconds

work/asm9kvLzB.s:135: Error: unknown register display_centiseconds

work/asm9kvLzB.s:144: Error: unknown register PUSH_BUTTONS_ADDR

work/asm9kvLzB.s:158: Error: unknown register start_resume_state

work/asm9kvLzB.s:164: Error: unknown register start_resume_state

work/asm9kvLzB.s:168: Error: unknown register lap_mode

work/asm9kvLzB.s:170: Error: unknown register lap_mode

work/asm9kvLzB.s:175: Error: unknown register centisecond_counter

work/asm9kvLzB.s:176: Error: unknown register lap_mode

work/asm9kvLzB.s:177: Error: unknown register start_resume_state

work/asm9kvLzB.s:178: Error: unknown register set_state

work/asm9kvLzB.s:180: Error: unknown register reset_state Compile failed.

any help will be greatly appreciated.

[khtan]

Hi,

Thanks for using Intel Forums. Do allow us some time to go through your program and get back to you later.

Thanks

Regards

Kian

[aikeu]

Hi lj4,

May I know where you get the reference document to run the design in the first place?

Thanks.

Regards,

Aik Eu

[aikeu]

Hi lj4,

Any follow up on the previous comment?

Thanks.

Regards,

Aik Eu

[aikeu]

Hi lj4,

As we do not receive any response from you on the previous question/reply/answer that we have provided. Please login to ‘https://supporttickets.intel.com’, view details of the desire request, and post a feed/response within the next 15 days to allow me to continue to support you. After 15 days, this thread will be transitioned to community support. The community users will be able to help you on your follow-up questions.

Thanks.

Regards,

Aik Eu