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22 lines
450 B
ArmAsm
22 lines
450 B
ArmAsm
.section .text
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.global _start
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.global handler
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.equ DELAY, 1500
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_start:
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la t0, handler
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csrw mtvec, t0
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li t0, 0x80000000
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li t1, DELAY
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sw t1, 0(t0)
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li t0, 0x8
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csrrs x0, mstatus, t0
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li t0, 0x80
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csrrs x0, mie, t0
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wait:
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j wait
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handler:
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li t0, 0x8
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csrrc x0, mstatus, t0
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li t0, 0x80
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csrrc x0, mie, t0
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mret
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