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DFT reelle finie

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This commit is contained in:
Baptiste Henriet 2023-05-10 18:17:27 +02:00
parent c9a96fff88
commit 8864a81d99
3 changed files with 12 additions and 23 deletions
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10
soft/PjtKEIL_StepDFT/Src/DFT.s
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@ -26,20 +26,24 @@ DFTReel proc
push {lr} push {lr}
mov r2, #0 mov r2, #0
mov r3, #0 mov r3, #0
;;Pour i allant de 0 à M-1 (ici, M = 64) ;;Pour i allant de 0 à M-1 (ici, M = 64)
SommeFor SommeFor
;; Rsom += Signal[i] * TabCos[k*i] ;; Rsom += Signal[i] * TabCos[k*i]
ldrsh r4, [r0,r3] ldrsh r4, [r0,r3,lsl #1]
mul r5, r1, r3 mul r5, r1, r3
and r5, #63 and r5, #63
mov r7, r5
;mul r7, r5
ldr r6, =TabCos ldr r6, =TabCos
ldrsh r5, [r6,r5] ldrsh r5, [r6,r5,lsl #1]
;;smlal r2, r7, r4, r5
mla r2, r4, r5, r2 mla r2, r4, r5, r2
add r3, #1 add r3, #1
cmp r3, #64 cmp r3, #64
bne SommeFor bne SommeFor
;;Fin Pour ;;Fin Pour
str r2, [r0] mov r0, r2
pop {pc} pop {pc}
endp endp

4
soft/PjtKEIL_StepDFT/Src/principal.c
View file

@ -24,8 +24,10 @@ CLOCK_Configure();
while (1) while (1)
{ {
for(i = 0;i<63;i++){ for(i = 0;i<64;i++){
//tabDFT[0] = DFTReel(&(LeSignal[0]), 0);
tabDFT[i] = DFTReel(&(LeSignal[0]), i); tabDFT[i] = DFTReel(&(LeSignal[0]), i);
//tabDFT[2] = DFTReel(&(LeSignal[0]), 2);
} }
} }
} }

21
soft/PjtKEIL_StepDFT/StepDFT.uvoptx
View file

@ -153,24 +153,7 @@
<Name>-U066CFF574857847167074929 -O2254 -S0 -C0 -A0 -N00("ARM CoreSight SW-DP") -D00(1BA01477) -L00(0) -TO18 -TC10000000 -TP21 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -FO7 -FD20000000 -FC800 -FN1 -FF0STM32F10x_128.FLM -FS08000000 -FL020000 -FP0($$Device:STM32F103RB$Flash\STM32F10x_128.FLM)</Name> <Name>-U066CFF574857847167074929 -O2254 -S0 -C0 -A0 -N00("ARM CoreSight SW-DP") -D00(1BA01477) -L00(0) -TO18 -TC10000000 -TP21 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -FO7 -FD20000000 -FC800 -FN1 -FF0STM32F10x_128.FLM -FS08000000 -FL020000 -FP0($$Device:STM32F103RB$Flash\STM32F10x_128.FLM)</Name>
</SetRegEntry> </SetRegEntry>
</TargetDriverDllRegistry> </TargetDriverDllRegistry>
<Breakpoint> <Breakpoint/>
<Bp>
<Number>0</Number>
<Type>0</Type>
<LineNumber>43</LineNumber>
<EnabledFlag>1</EnabledFlag>
<Address>134218470</Address>
<ByteObject>0</ByteObject>
<HtxType>0</HtxType>
<ManyObjects>0</ManyObjects>
<SizeOfObject>0</SizeOfObject>
<BreakByAccess>0</BreakByAccess>
<BreakIfRCount>1</BreakIfRCount>
<Filename>.\Src\DFT.s</Filename>
<ExecCommand></ExecCommand>
<Expression>\\StepDFT\Src/DFT.s\43</Expression>
</Bp>
</Breakpoint>
<WatchWindow1> <WatchWindow1>
<Ww> <Ww>
<count>0</count> <count>0</count>
@ -187,7 +170,7 @@
<Mm> <Mm>
<WinNumber>1</WinNumber> <WinNumber>1</WinNumber>
<SubType>1</SubType> <SubType>1</SubType>
<ItemText>0x20000004 </ItemText> <ItemText>0x20000004</ItemText>
<AccSizeX>0</AccSizeX> <AccSizeX>0</AccSizeX>
</Mm> </Mm>
</MemoryWindow1> </MemoryWindow1>