Objectif 2 DFT en réel : En cours
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Cavailles Kevin
parent
3368286817
commit
d1081eb58d
5 changed files with 123 additions and 107 deletions
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@ -157,9 +157,9 @@
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@ -203,7 +235,7 @@
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@ -338,7 +338,7 @@
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<MiscControls>--C99</MiscControls>
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<Define>STM32F103xB,USE_FULL_LL_DRIVER</Define>
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<Undefine></Undefine>
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<IncludePath>..\GASSP72</IncludePath>
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<IncludePath>../GFSSP72</IncludePath>
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@ -417,11 +417,6 @@
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<FilePath>.\Src\table_sin_cos.s</FilePath>
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<File>
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<FileName>signal.s</FileName>
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<FilePath>.\Src\signal.s</FilePath>
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<Group>
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@ -4,6 +4,7 @@
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export calcul_dft
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import TabCos
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import TabSin
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;
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@ -1,18 +1,94 @@
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#include "gassp72.h"
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#include <stdlib.h>
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#include <time.h>
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#include <stdio.h>
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#define taille 6
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#define SYSTICK_PER 360000 // (360000 ticks équivaut à 5ms)
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extern void timer_callback(void);
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extern short TabSig[];
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int etat = 0x00020000;
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extern int calcul_carre(int);
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extern int calcul_dft(short *, int);
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int res_dft[64];
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extern int calcul_dft(unsigned short *, int);
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int res_dft = 0;
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unsigned short dma_buf[64];
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int compteurs[taille];
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int scores[taille];
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int k_values[] = {17,18,19,20,23,24};
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int M2TIR = 985507;
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void checkCounter(void){
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for(int i=0; i<taille; i++) {
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if(compteurs[i] == 13){
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compteurs[i]=0;
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scores[i]++;
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}
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}
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}
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void sys_callback(void){
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// Démarrage DMA pour 64 points
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Start_DMA1(64);
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Wait_On_End_Of_DMA1();
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Stop_DMA1;
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for(int i=0; i<taille; i++){
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res_dft = calcul_dft(dma_buf, k_values[i]);
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if(res_dft > M2TIR){
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compteurs[i]++;
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}else{
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compteurs[i] = 0;
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}
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}
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checkCounter();
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}
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int main(void)
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{
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for(int k=0; k<64; k++){
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res_dft[k] = calcul_dft(TabSig,k);
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for(int i=0; i<6; i++){
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compteurs[i] = 0;
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scores[i] = 0 ;
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}
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// activation de la PLL qui multiplie la fréquence du quartz par 9
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CLOCK_Configure();
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// PA2 (ADC voie 2) = entrée analog
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GPIO_Configure(GPIOA, 2, INPUT, ANALOG);
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// PB1 = sortie pour profilage à l'oscillo
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GPIO_Configure(GPIOB, 1, OUTPUT, OUTPUT_PPULL);
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// PB14 = sortie pour LED
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GPIO_Configure(GPIOB, 14, OUTPUT, OUTPUT_PPULL);
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// activation ADC, sampling time 1us
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Init_TimingADC_ActiveADC_ff( ADC1, 0x33 );
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Single_Channel_ADC( ADC1, 2 );
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// Déclenchement ADC par timer2, periode (72MHz/320kHz)ticks
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Init_Conversion_On_Trig_Timer_ff( ADC1, TIM2_CC2, 225 );
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// Config DMA pour utilisation du buffer dma_buf (a créér)
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Init_ADC1_DMA1( 0, dma_buf );
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// Config Timer, période exprimée en périodes horloge CPU (72 MHz)
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Systick_Period_ff( SYSTICK_PER );
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// enregistrement de la fonction de traitement de l'interruption timer
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// ici le 3 est la priorité, sys_callback est l'adresse de cette fonction, a créér en C
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Systick_Prio_IT( 3, sys_callback );
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SysTick_On;
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SysTick_Enable_IT;
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while(1){
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}
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}
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76
Src/signal.s
76
Src/signal.s
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@ -1,76 +0,0 @@
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AREA Signal, DATA, READONLY
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export TabSig
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; fonction cosinus, frequence relative 1, phase -45 degres, amplitude max
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; valeurs attendues pour k = 1 :
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; Re 0x5A82562C env +sqrt(0.5) * 2^31
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; Im 0x5A82562C env +sqrt(0.5) * 2^31
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; M2 0x3FFFCDE5 env 2^30
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; pour 1 < k < 63
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; M2 < 0x0000000F
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TabSig
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dcw 0x0da8 ; 0 3496 0.85352
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dcw 0x0e2f ; 1 3631 0.88647
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dcw 0x0ea7 ; 2 3751 0.91577
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dcw 0x0f0e ; 3 3854 0.94092
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dcw 0x0f64 ; 4 3940 0.96191
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dcw 0x0fa8 ; 5 4008 0.97852
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dcw 0x0fd9 ; 6 4057 0.99048
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dcw 0x0ff6 ; 7 4086 0.99756
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dcw 0x0fff ; 8 4095 0.99976
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dcw 0x0ff6 ; 9 4086 0.99756
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dcw 0x0fd9 ; 10 4057 0.99048
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dcw 0x0fa8 ; 11 4008 0.97852
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dcw 0x0f64 ; 12 3940 0.96191
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dcw 0x0f0e ; 13 3854 0.94092
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dcw 0x0ea7 ; 14 3751 0.91577
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dcw 0x0e2f ; 15 3631 0.88647
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dcw 0x0da8 ; 16 3496 0.85352
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dcw 0x0d13 ; 17 3347 0.81714
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dcw 0x0c72 ; 18 3186 0.77783
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dcw 0x0bc5 ; 19 3013 0.73560
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dcw 0x0b10 ; 20 2832 0.69141
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dcw 0x0a53 ; 21 2643 0.64526
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dcw 0x0990 ; 22 2448 0.59766
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dcw 0x08c9 ; 23 2249 0.54907
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dcw 0x0800 ; 24 2048 0.50000
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dcw 0x0737 ; 25 1847 0.45093
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dcw 0x0670 ; 26 1648 0.40234
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dcw 0x05ad ; 27 1453 0.35474
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dcw 0x04f0 ; 28 1264 0.30859
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dcw 0x043b ; 29 1083 0.26440
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dcw 0x038e ; 30 910 0.22217
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dcw 0x02ed ; 31 749 0.18286
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dcw 0x0258 ; 32 600 0.14648
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dcw 0x01d1 ; 33 465 0.11353
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dcw 0x0159 ; 34 345 0.08423
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dcw 0x00f2 ; 35 242 0.05908
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dcw 0x009c ; 36 156 0.03809
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dcw 0x0058 ; 37 88 0.02148
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dcw 0x0027 ; 38 39 0.00952
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dcw 0x000a ; 39 10 0.00244
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dcw 0x0000 ; 40 0 0.00000
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dcw 0x000a ; 41 10 0.00244
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dcw 0x0027 ; 42 39 0.00952
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dcw 0x0058 ; 43 88 0.02148
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dcw 0x009c ; 44 156 0.03809
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dcw 0x00f2 ; 45 242 0.05908
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dcw 0x0159 ; 46 345 0.08423
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dcw 0x01d1 ; 47 465 0.11353
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dcw 0x0258 ; 48 600 0.14648
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dcw 0x02ed ; 49 749 0.18286
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dcw 0x038e ; 50 910 0.22217
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dcw 0x043b ; 51 1083 0.26440
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dcw 0x04f0 ; 52 1264 0.30859
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dcw 0x05ad ; 53 1453 0.35474
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dcw 0x0670 ; 54 1648 0.40234
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dcw 0x0737 ; 55 1847 0.45093
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dcw 0x0800 ; 56 2048 0.50000
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dcw 0x08c9 ; 57 2249 0.54907
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dcw 0x0990 ; 58 2448 0.59766
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dcw 0x0a53 ; 59 2643 0.64526
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dcw 0x0b10 ; 60 2832 0.69141
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dcw 0x0bc5 ; 61 3013 0.73560
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dcw 0x0c72 ; 62 3186 0.77783
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dcw 0x0d13 ; 63 3347 0.81714
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end
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