71 lines
No EOL
1 KiB
ArmAsm
71 lines
No EOL
1 KiB
ArmAsm
PRESERVE8
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THUMB
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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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Offset equ 32768
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SortieSon equ 0
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Index equ 0
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import LongueurSon
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import Son
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import PWM_Set_Value_TIM3_Ch3
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export CallBackSon
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; ===============================================================================================
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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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ldr r0, =Index
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ldr r1, [r0]
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ldr r2, =LongueurSon
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ldr r2, [r2]
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cmp r1, r2
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beq FIN_Son
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add r1, #1
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str r1, [r0]
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sub r1, #1
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ldr r3, =Son
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ldrsh r3, [r3,r1,LSL #1]
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add r3, #Offset
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mov r0, #360
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mul r3,r0
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ldr r0,=Offset
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udiv r3, r0
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ldr r0, =SortieSon
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str r3, [r0]
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mov r0, r3
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bl PWM_Set_Value_TIM3_Ch3
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bx lr
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FIN_Son
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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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bx lr
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endp
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END
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