65 lines
No EOL
1 KiB
ArmAsm
65 lines
No EOL
1 KiB
ArmAsm
PRESERVE8
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THUMB
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include Driver/DriverJeuLaser.inc
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; ====================== zone de réservation de données, ======================================
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;Section RAM (read only) :
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area mesdata,data,readonly
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;Section RAM (read write):
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area maram,data,readwrite
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SortieSon dcw 0
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Index dcw 0
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; ===============================================================================================
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EXPORT SortieSon
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EXPORT CallbackSon
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IMPORT Son
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IMPORT LongueurSon
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;Section ROM code (read only) :
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area moncode,code,readonly
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; écrire le code ici
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CallbackSon proc
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push {lr}
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ldr r3,=Index
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ldr r1,[r3]
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ldr r0,=LongueurSon
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ldr r2,[r0]
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cmp r1,r2
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beq FinSig
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bge Fin
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; if index < longueur son
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ldr r2,=Son ; r2 = @ debut son
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ldr r0,[r2,r1]
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add r0,#32768
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mov r2,#720
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mul r0,r2
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lsr r0,#16
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ldr r2,=SortieSon
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str r0,[r2]
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add r1,#1
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str r1,[r3]
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b Fin
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;if index = longueurSon
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FinSig
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mov r0,#0
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ldr r2,=SortieSon
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str r0,[r2]
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add r1,#1
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str r1,[r3]
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; if index > longueurson
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Fin
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pop {pc}
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endp
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END
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