2023-03-14 16:21:55 +01:00
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PRESERVE8
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THUMB
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2023-04-14 15:31:33 +02:00
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export CallbackSon
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export index
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export SortieSon
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2023-04-19 11:29:35 +02:00
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export StartSon
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2023-04-14 15:31:33 +02:00
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import LongueurSon
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import Son
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2023-04-14 18:12:13 +02:00
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import PWM_Set_Value_TIM3_Ch3
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2023-03-14 16:21:55 +01:00
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; ====================== zone de r<>servation de donn<6E>es, ======================================
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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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2023-04-14 15:31:33 +02:00
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SortieSon dcw 0
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index dcd 0
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2023-03-14 16:21:55 +01:00
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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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2023-04-14 15:31:33 +02:00
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; <20>crire le code ici
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2023-03-14 16:21:55 +01:00
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2023-04-14 15:31:33 +02:00
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CallbackSon proc
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2023-04-14 17:34:45 +02:00
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push {lr,r4-r7}
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2023-04-14 15:31:33 +02:00
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ldr r4,=LongueurSon
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ldr r4,[r4]
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ldr r2,=index
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2023-04-19 11:29:35 +02:00
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ldr r7,[r2] ;r7 = valeur de index
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2023-04-14 15:31:33 +02:00
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cmp r4,r7
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bne alors
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sinon
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b finsi
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2023-03-14 16:21:55 +01:00
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2023-04-14 15:31:33 +02:00
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alors
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ldr r3,=SortieSon
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ldr r1,=Son
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2023-04-14 17:34:45 +02:00
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ldrsh r0,[r1,r7,lsl#1] ; R0 = *(R1+2*R7 ) R0 = R1[R7]
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2023-04-14 15:31:33 +02:00
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2023-04-14 17:34:45 +02:00
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mov r5,#32768
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add r0,r5
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mov r6,#719
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mul r0,r6
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;ldr r6,=23560192 ;719*32768
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asr r0,#16
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;add r0,r6
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2023-04-14 15:31:33 +02:00
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2023-04-14 17:34:45 +02:00
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; mise <20> jour de SortieSon
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strh r0,[r3]
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;ldr r3,[r0]
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2023-04-14 18:12:13 +02:00
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; mettre <20> jour la PWM
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bl PWM_Set_Value_TIM3_Ch3 ;on appelle la fonction avec r0 en param<61>tre
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2023-04-14 15:31:33 +02:00
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add r7,#1 ;index=index+1
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str r7,[r2] ; *R2 = R7
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2023-03-14 16:21:55 +01:00
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2023-04-14 15:31:33 +02:00
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finsi
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2023-04-14 17:34:45 +02:00
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pop {lr,r4-r7}
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2023-04-14 15:31:33 +02:00
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bx lr
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endp
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2023-03-14 16:21:55 +01:00
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2023-04-19 11:29:35 +02:00
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StartSon proc
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ldr r0,=index
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ldr r1,[r0]
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mov r1,#0
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str r1,[r0]
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bx lr
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endp
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END
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