19 lines
345 B
ArmAsm
19 lines
345 B
ArmAsm
.global delay_us
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.func delay_us
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delay_us:
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cmp r0, #0
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moveq pc, lr
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stmfd sp!, {r1, r2, fp, lr}
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mov r1, r0
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big_loop:
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ldr r2, =266
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loop:
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sub r2, r2, #1
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cmp r2, #0
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bne loop
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sub r1, r1, #1
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cmp r1, #0
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bne big_loop
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ldmfd sp!, {r1, r2, fp, pc}
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.endfunc
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