71 lines
No EOL
1.1 KiB
ArmAsm
71 lines
No EOL
1.1 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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SortieSon dcw 0
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export SortieSon
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export CallbackSon
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Index dcd 0
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export Index
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; ===============================================================================================
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;static short int SortieSon;
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;static int i
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;if (i<LongueurSon){
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;SortieSon=(Son[i]+32768)*719/65535;
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;i+=1
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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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import Son
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import LongueurSon
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import PWM_Set_Value_TIM3_Ch3
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; écrire le code ici
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CallbackSon proc
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push {r3}
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ldr r1,=LongueurSon
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ldr r1,[r1]
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;static int i
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ldr r0, =Index
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ldrsh r2,[r0]
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;if (i<LongueurSon)
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cmp r2, r1
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beq arret
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;SortieSon=(Son[i]+32768)*719/65535;
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ldr r1, =Son
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ldrsh r3, [r1, r2, lsl #1]
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mov r1, #0x8000
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add r3, r1
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mov r1, #0x2CF
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mul r3, r1
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mov r1, #0xFFFF
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udiv r3, r1
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ldr r4,=SortieSon
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strh r3,[r4]
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;i+=1
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add r2, #1
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str r2,[r0]
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;bl PWM_Set_Value_TIM3_Ch3; mis @ de la sortie PWM
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pop {r3}
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arret
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bx lr
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endp
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END
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