64 lines
742 B
Plaintext
64 lines
742 B
Plaintext
reset:
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br always >main
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nop
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hardfault:
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reti
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nop
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memfault:
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reti
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nop
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.align
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addr: .word 0x000F0000
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//w_cnt_top: .word 0x717D7840 //250 ms @ 100MHz
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w_cnt_top: .word 0x40 //for simulation only
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main:
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ldr r0,>addr //LED addr
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addi r6,8 //outer counter top
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clr r7 //wait counter
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ldr r8,>w_cnt_top
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out_loop:
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clr r1
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st08 r0,r1
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call >wait
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nop
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fill:
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lsh r1,r1,1
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addi r1,1
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st08 r0,r1
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call >wait
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nop
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addi r5,1
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cmp neq r5,r6
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br true >fill
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nop
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clr r5
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flush:
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lsh r1,r1,1
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st08 r0,r1
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call >wait
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nop
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addi r5,1
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cmp neq r5,r6
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br true >flush
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nop
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clr r5
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br always >out_loop
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nop
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//subroutine that iterates until counter overflow
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wait:
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clr r7 //inititalize inner counter
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inc_i:
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cmp neq r7,r8
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br true >inc_i //if i=cnt_top
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addi r7,1
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reti //else
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nop
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