54 lines
No EOL
834 B
ArmAsm
Executable file
54 lines
No EOL
834 B
ArmAsm
Executable file
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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FlagCligno dcd 0
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export timer_callback
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extern GPIOB_Set
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extern GPIOB_Clear
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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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timer_callback
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push {lr}
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ldr r2,=FlagCligno
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ldr r1, [r2]
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cmp r1, #1
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beq active_gpio
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; ELSE
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mov r0, #1
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bl GPIOB_Clear
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mov r1, #1
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str r1, [r2]
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pop {pc}
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active_gpio
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; IF = 1
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mov r0, #1
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bl GPIOB_Set
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mov r1, #0
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str r1, [r2]
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pop {pc}
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END
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