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StepDFT

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Alan Dutems 2023-05-17 11:53:03 +02:00
parent 17667eb7ca
commit 2ae098f921
2 changed files with 19 additions and 10 deletions
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21
soft/PjtKEIL_StepDFT/Src/DFT.s
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@ -24,20 +24,23 @@ DFT_ModuleAuCarre proc
push{r4, r5, r6, r7, r8, r9, r10, r11, r12} push{r4, r5, r6, r7, r8, r9, r10, r11, r12}
mov r0, #0 ; index mov r10, #0 ; index
mov r7, #0 ; resultat cos mov r7, #0 ; resultat cos
mov r8, #0 ; resultat sin mov r8, #0 ; resultat sin
Boucle Boucle
ldr r4, =LeSignal ldr r4, =LeSignal
ldrsh r4, [r4,r0, lsl#1] ldrsh r4, [r4,r10, lsl#1]
mul r9, r0, r10
and r11, r9, #63
ldr r5, =TabCos ldr r5, =TabCos
ldrsh r5, [r5,r0, lsl#1] ldrsh r5, [r5,r11, lsl#1]
ldr r6, =TabSin ldr r6, =TabSin
ldrsh r6, [r6,r0, lsl#1] ldrsh r6, [r6,r11, lsl#1]
mul r5,r5,r4 mul r5,r5,r4
add r7, r7, r5 add r7, r7, r5
@ -45,12 +48,18 @@ Boucle
mul r6,r6,r4 mul r6,r6,r4
add r8,r8,r6 add r8,r8,r6
add r0, #1 add r10, #1
cmp r0, #64 cmp r10, #64
blt Boucle blt Boucle
;Format 5.27
smull r9,r10,r7,r7
smlal r9,r10,r8,r8
mov r0,r10
;Format 10.22
pop{r4, r5, r6, r7, r8, r9, r10, r11, r12} pop{r4, r5, r6, r7, r8, r9, r10, r11, r12}

8
soft/PjtKEIL_StepDFT/StepDFT.uvoptx
View file

@ -157,18 +157,18 @@
<Bp> <Bp>
<Number>0</Number> <Number>0</Number>
<Type>0</Type> <Type>0</Type>
<LineNumber>30</LineNumber> <LineNumber>60</LineNumber>
<EnabledFlag>1</EnabledFlag> <EnabledFlag>1</EnabledFlag>
<Address>134218370</Address> <Address>134218478</Address>
<ByteObject>0</ByteObject> <ByteObject>0</ByteObject>
<HtxType>0</HtxType> <HtxType>0</HtxType>
<ManyObjects>0</ManyObjects> <ManyObjects>0</ManyObjects>
<SizeOfObject>0</SizeOfObject> <SizeOfObject>0</SizeOfObject>
<BreakByAccess>0</BreakByAccess> <BreakByAccess>0</BreakByAccess>
<BreakIfRCount>1</BreakIfRCount> <BreakIfRCount>1</BreakIfRCount>
<Filename>.\Src\principal.c</Filename> <Filename>.\Src\DFT.s</Filename>
<ExecCommand></ExecCommand> <ExecCommand></ExecCommand>
<Expression>\\StepDFT\Src/principal.c\30</Expression> <Expression>\\StepDFT\Src/DFT.s\60</Expression>
</Bp> </Bp>
</Breakpoint> </Breakpoint>
<Tracepoint> <Tracepoint>