FFT LED Display
help :(
Dependencies: FFT
Diff: main.cpp
- Revision:
- 8:24c18eecc442
- Parent:
- 7:0d62545e6d73
- Child:
- 9:97abd5e954f1
diff -r 0d62545e6d73 -r 24c18eecc442 main.cpp
--- a/main.cpp Thu Dec 03 18:15:35 2020 +0000
+++ b/main.cpp Fri Dec 04 03:48:15 2020 +0000
@@ -6,6 +6,9 @@
#include "rtos.h"
#include "FFT.h"
#include <string>
+#include "around_the_world-atc-array.h"
+#include "dont_speak-no_doubt-array.h"
+#include "my-love-array.h"
SDFileSystem sd(p5, p6, p7, p8, "sd"); // SD card
@@ -15,14 +18,16 @@
AnalogOut DACout(p18); // speaker
wave_player waver(&DACout);
Mutex speaker_lock;
+Mutex file_lock;
DigitalOut myled(LED1); // mbed LED
Serial pc (USBTX,USBRX);
string dir; // "/sd/" + song + ".wav"
+//string song = "around_the_world-atc";
string song;
-bool play;
+int song_data_length;
+int song_data[];
+bool play = false;
-<<<<<<< working copy
-#define BUFFER_SIZE 50
// delete later
/*int sample[12][8] = {
@@ -39,9 +44,9 @@
41483,37964,39215,35908,31570,28332,24492,23121,
22874,18154,15541,15263,12463,12198,13301,9951
};*/
-=======
+
+
#define BUFFER_SIZE 64
->>>>>>> merge rev
// states for display output
const int on[8][8] = {
@@ -101,192 +106,143 @@
-<<<<<<< working copy
-void display_fft(int sample[])
+
+void display_fft(float sample[])
{
-=======
-void display_fft(float sample[]) {
-
->>>>>>> merge rev
int state = 0;
float freq = 0;
matrix.begin(0x70);
-<<<<<<< working copy
- for (int a = 0; a < 50; a++) {
-
- freq = sample[a];
-=======
-
- int s = sizeof(sample);
-
- pc.printf("%d\n", s);
+ // for (int a = 0; a < 64; a++) {
+
+ freq = sample[1]/4;
- for (int a = 0; a < 64; a++) {
-
- freq = sample[a];
-
- pc.printf("%f\n",freq);
-
->>>>>>> merge rev
- // determine state based on the FFT output range
- if (freq < 10000) {
- state = 5; // OFF
- } else if (freq >= 10000 && freq < 25000) {
- state = 4; // LOW
- } else if (freq >= 25000 && freq < 40000) {
- state = 3; // MED
- } else if (freq >= 40000 && freq < 55000) {
- state = 2; // HIGH
- } else if (freq >= 55000) {
-<<<<<<< working copy
- state = 1; // ON
- }
+
+ //pc.printf("%f\n",freq);
+
+ // determine state based on the FFT output range
+ if (freq < 10000) {
+ state = 5; // OFF
+ } else if (freq >= 10000 && freq < 25000) {
+ state = 4; // LOW
+ } else if (freq >= 25000 && freq < 40000) {
+ state = 3; // MED
+ } else if (freq >= 40000 && freq < 55000) {
+ state = 2; // HIGH
+ } else if (freq >= 55000) {
+ state = 1; // ON
+ }
-=======
- state = 1; // HIGHEST
- }
-
->>>>>>> merge rev
- // switch statement based on the state
- switch (state) {
- case(1): // CASE HIGHEST
- matrix.clear();
- for (int i = 0; i < 8; i++) {
- for (int j = 0; j < 8; j++) {
- if (on[i][j] == 1) {
- matrix.drawPixel(i, j, LED_ON);
- }
+ // switch statement based on the state
+ switch (state) {
+ case(1): // CASE HIGHEST
+ matrix.clear();
+ for (int i = 0; i < 8; i++) {
+ for (int j = 0; j < 8; j++) {
+ if (on[i][j] == 1) {
+ matrix.drawPixel(i, j, LED_ON);
+ }
+ }
+ }
+ matrix.writeDisplay();
+ wait(.15);
+ break;
+
+ case(2): // CASE HIGH
+ matrix.clear();
+ for (int i = 0; i < 8; i++) {
+ for (int j = 0; j < 8; j++) {
+ if (high[i][j] == 1) {
+ matrix.drawPixel(i, j, LED_ON);
}
}
- matrix.writeDisplay();
- wait(.2);
- break;
+ }
+ matrix.writeDisplay();
+ wait(.15);
+
+
- case(2): // CASE HIGH
- matrix.clear();
- for (int i = 0; i < 8; i++) {
- for (int j = 0; j < 8; j++) {
- if (high[i][j] == 1) {
- matrix.drawPixel(i, j, LED_ON);
- }
+ case(3): // CASE MEDIUM
+ matrix.clear();
+ for (int i = 0; i < 8; i++) {
+ for (int j = 0; j < 8; j++) {
+ if (med[i][j] == 1) {
+ matrix.drawPixel(i, j, LED_ON);
}
}
- matrix.writeDisplay();
-<<<<<<< working copy
- wait(1);
+ }
+ matrix.writeDisplay();
+ wait(.15);
+ break;
-=======
- wait(.2);
-
->>>>>>> merge rev
- case(3): // CASE MEDIUM
- matrix.clear();
- for (int i = 0; i < 8; i++) {
- for (int j = 0; j < 8; j++) {
- if (med[i][j] == 1) {
- matrix.drawPixel(i, j, LED_ON);
- }
+ case(4): // CASE LOW
+ matrix.clear();
+ for (int i = 0; i < 8; i++) {
+ for (int j = 0; j < 8; j++) {
+ if (low[i][j] == 1) {
+ matrix.drawPixel(i, j, LED_ON);
}
}
- matrix.writeDisplay();
- wait(.2);
- break;
+ }
+ matrix.writeDisplay();
+ wait(.15);
+ break;
- case(4): // CASE LOW
- matrix.clear();
- for (int i = 0; i < 8; i++) {
- for (int j = 0; j < 8; j++) {
- if (low[i][j] == 1) {
- matrix.drawPixel(i, j, LED_ON);
- }
+ case(5): // CASE OFF
+ matrix.clear();
+ for (int i = 0; i < 8; i++) {
+ for (int j = 0; j < 8; j++) {
+ if (off[i][j] == 1) {
+ matrix.drawPixel(i, j, LED_ON);
}
}
- matrix.writeDisplay();
- wait(.2);
- break;
+ }
+ matrix.writeDisplay();
+ wait(.15);
+ break;
- case(5): // CASE OFF
- matrix.clear();
- for (int i = 0; i < 8; i++) {
- for (int j = 0; j < 8; j++) {
- if (off[i][j] == 1) {
- matrix.drawPixel(i, j, LED_ON);
- }
- }
- }
- matrix.writeDisplay();
- wait(.2);
- break;
-
- default:
- break;
- }
-<<<<<<< working copy
-
-
+ default:
+ break;
}
-=======
-
- pc.printf("done");
-
->>>>>>> merge rev
+ //}
+
+ //pc.printf("done");
+
}
//Reads SD card and passes value to frequency display
void display_thread(void const* args)
{
- FILE *fp = fopen("/sd/africa-toto-array.txt","r");
- if(fp == NULL) {
- pc.printf("Error opening file\n");
- return;
- }
-<<<<<<< working copy
+ while(1) {
- int buffer[BUFFER_SIZE];
-=======
-
- float buffer[BUFFER_SIZE];
->>>>>>> merge rev
- int buffer_index = 0;
- int value;
-<<<<<<< working copy
- pc.printf("Thread start\n");
- while(fscanf(fp,"%d,",&value) == 1) {
- buffer[buffer_index] = value;
- buffer_index++;
- pc.printf("%d\n",value);
- buffer_index++;
- if(buffer_index == BUFFER_SIZE) {
- //fast fourier tranform function here
- display_fft(buffer);
- buffer_index = 0;
- memset(buffer,0,sizeof(buffer));
+ float buffer[BUFFER_SIZE];
+ int buffer_index = 0;
+
+ //int num_elements = NUM_ELEMENTS_AROUND_THE_WORLD;
+ int num_elements = 16979;
+ for(int i=0; i<num_elements; ++i ) {
+ buffer[buffer_index] = song_data[i];
+ // pc.printf("%f", buffer[buffer_index]);
+ buffer_index++;
+ //pc.printf("%d\n",value);
+ //buffer_index++;
+ if(buffer_index == BUFFER_SIZE) {
+ //fast fourier tranform function here
+ vRealFFT(buffer, 4);
+ display_fft(buffer);
+ buffer_index = 0;
+ memset(buffer,0,sizeof(buffer));
+
+ }
}
-=======
- while(fscanf(fp,"%d,",&value) == 1){
- buffer[buffer_index] = (float)value;
- buffer_index++;
- //pc.printf("%d\n",value);
- //buffer_index++;
- if(buffer_index == BUFFER_SIZE)
- {
- //fast fourier tranform function here
- vRealFFT(buffer, 4);
- display_fft(buffer);
- buffer_index = 0;
- memset(buffer,0,sizeof(buffer));
-
- }
->>>>>>> merge rev
+ Thread::wait(300);
}
- fclose(fp);
}
void speaker_thread(void const* args)
@@ -297,35 +253,41 @@
// string song_title = "/sd/" + "" + ".wav";
- /*
+ if(play == true)
+ {
+ //speaker_lock.lock();
FILE *wave_file;
dir = "/sd/" + song + ".wav";
+
+ file_lock.lock();
wave_file=fopen(dir.c_str(),"r");
+ file_lock.unlock();
+
+ waver.play(wave_file);
- speaker_lock.lock();
- if (play)
- {
- waver.play(wave_file);
- }
- speaker_lock.unlock();
+ file_lock.lock();
fclose(wave_file);
- Thread::wait(100);
- */
+ file_lock.unlock();
+ //speaker_lock.unlock();
+ }
+ Thread::wait(1000);
}
}
int main()
{
-
+ //sd.mount();
+ pc.printf("I have updated\n");
Thread th1(speaker_thread);
Thread th2(display_thread);
char c;
while(1) {
- myled = 1;
+ /*myled = 1;
wait(0.2);
myled = 0;
wait(0.2);
+ */
while(!pc.readable()) {
Thread::wait(1);
}
@@ -334,18 +296,25 @@
switch(c) {
case '1':
song = "africa-toto";
+
break;
case '2':
song = "around_the_world-atc";
+ song_data_length = NUM_ELEMENTS_AROUND_THE_WORLD;
+ song_data = data_around_the_world;
break;
case '3':
song = "beautiful_life-ace_of_base";
break;
case '4':
song = "dont_speak-no_doubt";
+ song_data_length = NUM_ELEMENTS_DONT_SPEAK_NO_DOUBT;
+ song_data = data_dont_speak_no_doubt;
break;
case '5':
song = "my-love";
+ song_data_length = NUM_ELEMENTS_MY_LOVE;
+ song_data = data_my_love;
break;
case '6':
song = "Song1_test";
@@ -353,10 +322,12 @@
case 'P':
// wave_player plays
play = true;
+ led =1;
break;
case 'S':
// wave_player stops
play = false;
+ //led = 0;
break;
default:
break;