forked from acco/chti23
74 lines
No EOL
1 KiB
ArmAsm
74 lines
No EOL
1 KiB
ArmAsm
import PWM_Set_Value_TIM3_Ch3
|
|
|
|
PRESERVE8
|
|
THUMB
|
|
|
|
import Son
|
|
import LongueurSon
|
|
import PeriodeSonMicroSec
|
|
|
|
|
|
; ====================== zone de réservation de données, ======================================
|
|
;Section RAM (read only) :
|
|
area mesdata,data,readonly
|
|
|
|
|
|
;Section RAM (read write):
|
|
area maram,data,readwrite
|
|
|
|
|
|
|
|
SortieSon dcd 0
|
|
Index dcw 0
|
|
|
|
export SortieSon
|
|
|
|
|
|
; ===============================================================================================
|
|
|
|
|
|
|
|
|
|
;Section ROM code (read only) :
|
|
area moncode,code,readonly
|
|
; écrire le code ici
|
|
|
|
export timer_callback_son
|
|
|
|
timer_callback_son proc
|
|
|
|
push {lr,r4}
|
|
|
|
ldr r4, =Index ; r4 = &Index
|
|
ldr r0, [r4] ; r0 = *r4
|
|
ldr r1, =LongueurSon
|
|
ldr r2, [r1]
|
|
cmp r0, r2
|
|
beq fin
|
|
|
|
|
|
|
|
ldr r2,=Son
|
|
|
|
ldrsh r1, [r2,r0, lsl #1]
|
|
add r1, #32768 ; (1<<16)
|
|
mov r2, #720
|
|
mul r1, r2
|
|
asr r1, #16
|
|
|
|
mov r3, r0
|
|
add r3, #1
|
|
str r3, [r4]
|
|
|
|
ldr r3,=SortieSon
|
|
mov r0, r1
|
|
bl PWM_Set_Value_TIM3_Ch3
|
|
|
|
str r0, [r3] ;Mise à jour sortie son pas PWM
|
|
|
|
fin
|
|
pop {lr,r4}
|
|
bx lr
|
|
endp
|
|
|
|
END
|