FFT LED Display / 4180_EditThis_copy

this hurts

Dependencies:   FFT

main.cpp@1:5dd6801bb0d6, 2020-12-02 (annotated)

Committer:
annieluo2
Date:
Wed Dec 02 23:39:20 2020 +0000
Revision:
1:5dd6801bb0d6
Parent:
0:d6c9b09b4042
Child:
2:a6e81c45ef48
added display options

Who changed what in which revision?

UserRevisionLine numberNew contents of line
annieluo2 0:d6c9b09b4042 1 #include "mbed.h"
annieluo2 0:d6c9b09b4042 2 #include "SDFileSystem.h"
annieluo2 0:d6c9b09b4042 3 #include "wave_player.h"
annieluo2 0:d6c9b09b4042 4 #include "Adafruit_LEDBackpack.h"
annieluo2 0:d6c9b09b4042 5 #include "Adafruit_GFX.h"
annieluo2 0:d6c9b09b4042 6 #include "rtos.h"
annieluo2 0:d6c9b09b4042 7 #include "FFT.h"
annieluo2 0:d6c9b09b4042 8
annieluo2 0:d6c9b09b4042 9 SDFileSystem sd(p5, p6, p7, p8, "sd"); // SD card
annieluo2 0:d6c9b09b4042 10
annieluo2 0:d6c9b09b4042 11 I2C i2c(p28, p27); // LED display
annieluo2 0:d6c9b09b4042 12 Adafruit_8x8matrix matrix = Adafruit_8x8matrix(&i2c);
annieluo2 0:d6c9b09b4042 13
annieluo2 0:d6c9b09b4042 14 AnalogOut DACout(p18); // speaker
annieluo2 0:d6c9b09b4042 15 wave_player waver(&DACout);
annieluo2 0:d6c9b09b4042 16 Mutex speaker_lock;
annieluo2 0:d6c9b09b4042 17
annieluo2 0:d6c9b09b4042 18 DigitalOut myled(LED1); // mbed LED
annieluo2 0:d6c9b09b4042 19
annieluo2 1:5dd6801bb0d6 20 // delete later
annieluo2 1:5dd6801bb0d6 21 int sample[12][8] = {
annieluo2 1:5dd6801bb0d6 22 34085,32666,29810,29823,27514,24175,24468,32559,
annieluo2 1:5dd6801bb0d6 23 36401,33075,29037,21933,20189,21751,20975,20087,
annieluo2 1:5dd6801bb0d6 24 17530,27723,30891,21128,19982,15446,12413,13597,
annieluo2 1:5dd6801bb0d6 25 15776,14233,15622,16334,15485,17136,16389,17954,
annieluo2 1:5dd6801bb0d6 26 20349,18486,23377,34447,34400,34681,33107,31171,
annieluo2 1:5dd6801bb0d6 27 30007,33640,37007,38136,39187,38169,51831,52041,
annieluo2 1:5dd6801bb0d6 28 47831,48634,44189,43878,44743,46468,43170,47172,
annieluo2 1:5dd6801bb0d6 29 53518,52294,54825,51992,49619,48147,47901,48413,
annieluo2 1:5dd6801bb0d6 30 46049,49090,47590,46154,45423,41223,41782,54695,
annieluo2 1:5dd6801bb0d6 31 57452,51210,52462,59096,56711,52268,49364,42865,
annieluo2 1:5dd6801bb0d6 32 41483,37964,39215,35908,31570,28332,24492,23121,
annieluo2 1:5dd6801bb0d6 33 22874,18154,15541,15263,12463,12198,13301,9951
annieluo2 1:5dd6801bb0d6 34 };
annieluo2 1:5dd6801bb0d6 35
annieluo2 1:5dd6801bb0d6 36 // states for display output
annieluo2 1:5dd6801bb0d6 37 const int on[8][8] =
annieluo2 1:5dd6801bb0d6 38 {1, 1, 1, 1, 1, 1, 1, 1,
annieluo2 1:5dd6801bb0d6 39 1, 1, 1, 1, 1, 1, 1, 1,
annieluo2 1:5dd6801bb0d6 40 1, 1, 1, 1, 1, 1, 1, 1,
annieluo2 1:5dd6801bb0d6 41 1, 1, 1, 1, 1, 1, 1, 1,
annieluo2 1:5dd6801bb0d6 42 1, 1, 1, 1, 1, 1, 1, 1,
annieluo2 1:5dd6801bb0d6 43 1, 1, 1, 1, 1, 1, 1, 1,
annieluo2 1:5dd6801bb0d6 44 1, 1, 1, 1, 1, 1, 1, 1,
annieluo2 1:5dd6801bb0d6 45 1, 1, 1, 1, 1, 1, 1, 1};
annieluo2 1:5dd6801bb0d6 46
annieluo2 1:5dd6801bb0d6 47 const int high[8][8] =
annieluo2 1:5dd6801bb0d6 48 {0, 0, 0, 1, 1, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 49 0, 0, 0, 1, 1, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 50 0, 0, 1, 1, 1, 1, 0, 0,
annieluo2 1:5dd6801bb0d6 51 0, 1, 1, 1, 1, 1, 1, 0,
annieluo2 1:5dd6801bb0d6 52 0, 1, 1, 1, 1, 1, 1, 0,
annieluo2 1:5dd6801bb0d6 53 1, 1, 1, 1, 1, 1, 1, 1,
annieluo2 1:5dd6801bb0d6 54 1, 1, 1, 1, 1, 1, 1, 1,
annieluo2 1:5dd6801bb0d6 55 1, 1, 1, 1, 1, 1, 1, 1};
annieluo2 1:5dd6801bb0d6 56
annieluo2 1:5dd6801bb0d6 57 const int med[8][8] =
annieluo2 1:5dd6801bb0d6 58 {0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 59 0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 60 0, 0, 0, 1, 1, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 61 0, 0, 1, 1, 1, 1, 0, 0,
annieluo2 1:5dd6801bb0d6 62 0, 0, 1, 1, 1, 1, 0, 0,
annieluo2 1:5dd6801bb0d6 63 0, 1, 1, 1, 1, 1, 1, 0,
annieluo2 1:5dd6801bb0d6 64 1, 1, 1, 1, 1, 1, 1, 1,
annieluo2 1:5dd6801bb0d6 65 1, 1, 1, 1, 1, 1, 1, 1};
annieluo2 1:5dd6801bb0d6 66
annieluo2 1:5dd6801bb0d6 67 const int low[8][8] =
annieluo2 1:5dd6801bb0d6 68 {0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 69 0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 70 0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 71 0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 72 0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 73 0, 0, 1, 1, 1, 1, 0, 0,
annieluo2 1:5dd6801bb0d6 74 0, 1, 1, 1, 1, 1, 1, 0,
annieluo2 1:5dd6801bb0d6 75 1, 1, 1, 1, 1, 1, 1, 1};
annieluo2 1:5dd6801bb0d6 76
annieluo2 1:5dd6801bb0d6 77 const int off[8][8] =
annieluo2 1:5dd6801bb0d6 78 {0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 79 0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 80 0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 81 0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 82 0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 83 0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 84 0, 0, 0, 0, 0, 0, 0, 0,
annieluo2 1:5dd6801bb0d6 85 0, 0, 0, 0, 0, 0, 0, 0};
annieluo2 1:5dd6801bb0d6 86
annieluo2 1:5dd6801bb0d6 87 void display_thread(void const* args) {
annieluo2 1:5dd6801bb0d6 88
annieluo2 1:5dd6801bb0d6 89 int state = 0;
annieluo2 1:5dd6801bb0d6 90 matrix.begin(0x70);
annieluo2 1:5dd6801bb0d6 91
annieluo2 0:d6c9b09b4042 92 while(1) {
annieluo2 1:5dd6801bb0d6 93 for (int a = 0; a < 12; a++) {
annieluo2 1:5dd6801bb0d6 94 for (int b = 0; b < 8; b++) {
annieluo2 1:5dd6801bb0d6 95
annieluo2 1:5dd6801bb0d6 96 // grab the FFT frequencies;
annieluo2 1:5dd6801bb0d6 97 int freq = sample[a][b];
annieluo2 1:5dd6801bb0d6 98
annieluo2 1:5dd6801bb0d6 99 // determine state based on the FFT output range
annieluo2 1:5dd6801bb0d6 100 if (freq >= 0 && freq < 10000) {
annieluo2 1:5dd6801bb0d6 101 state = 5; // OFF
annieluo2 1:5dd6801bb0d6 102 } else if (freq >= 10000 && freq < 25000) {
annieluo2 1:5dd6801bb0d6 103 state = 4; // LOW
annieluo2 1:5dd6801bb0d6 104 } else if (freq >= 25000 && freq < 40000) {
annieluo2 1:5dd6801bb0d6 105 state = 3; // MED
annieluo2 1:5dd6801bb0d6 106 } else if (freq >= 40000 && freq < 55000) {
annieluo2 1:5dd6801bb0d6 107 state = 2; // HIGH
annieluo2 1:5dd6801bb0d6 108 } else if (freq >= 55000) {
annieluo2 1:5dd6801bb0d6 109 state = 1; // ON
annieluo2 1:5dd6801bb0d6 110 }
annieluo2 1:5dd6801bb0d6 111
annieluo2 1:5dd6801bb0d6 112 // switch statement based on the state
annieluo2 1:5dd6801bb0d6 113 switch (state) {
annieluo2 1:5dd6801bb0d6 114 case(1): // CASE HIGHEST
annieluo2 1:5dd6801bb0d6 115 matrix.clear();
annieluo2 1:5dd6801bb0d6 116 for (int i = 0; i < 8; i++) {
annieluo2 1:5dd6801bb0d6 117 for (int j = 0; j < 8; j++) {
annieluo2 1:5dd6801bb0d6 118 if (on[i][j] == 1) {
annieluo2 1:5dd6801bb0d6 119 matrix.drawPixel(i, j, LED_ON);
annieluo2 1:5dd6801bb0d6 120 }
annieluo2 1:5dd6801bb0d6 121 }
annieluo2 1:5dd6801bb0d6 122 }
annieluo2 1:5dd6801bb0d6 123 matrix.writeDisplay();
annieluo2 1:5dd6801bb0d6 124 wait(1);
annieluo2 1:5dd6801bb0d6 125 break;
annieluo2 1:5dd6801bb0d6 126
annieluo2 1:5dd6801bb0d6 127 case(2): // CASE HIGH
annieluo2 1:5dd6801bb0d6 128 matrix.clear();
annieluo2 1:5dd6801bb0d6 129 for (int i = 0; i < 8; i++) {
annieluo2 1:5dd6801bb0d6 130 for (int j = 0; j < 8; j++) {
annieluo2 1:5dd6801bb0d6 131 if (high[i][j] == 1) {
annieluo2 1:5dd6801bb0d6 132 matrix.drawPixel(i, j, LED_ON);
annieluo2 1:5dd6801bb0d6 133 }
annieluo2 1:5dd6801bb0d6 134 }
annieluo2 1:5dd6801bb0d6 135 }
annieluo2 1:5dd6801bb0d6 136 matrix.writeDisplay();
annieluo2 1:5dd6801bb0d6 137 wait(1);
annieluo2 1:5dd6801bb0d6 138
annieluo2 1:5dd6801bb0d6 139 case(3): // CASE MEDIUM
annieluo2 1:5dd6801bb0d6 140 matrix.clear();
annieluo2 1:5dd6801bb0d6 141 for (int i = 0; i < 8; i++) {
annieluo2 1:5dd6801bb0d6 142 for (int j = 0; j < 8; j++) {
annieluo2 1:5dd6801bb0d6 143 if (med[i][j] == 1) {
annieluo2 1:5dd6801bb0d6 144 matrix.drawPixel(i, j, LED_ON);
annieluo2 1:5dd6801bb0d6 145 }
annieluo2 1:5dd6801bb0d6 146 }
annieluo2 1:5dd6801bb0d6 147 }
annieluo2 1:5dd6801bb0d6 148 matrix.writeDisplay();
annieluo2 1:5dd6801bb0d6 149 wait(1);
annieluo2 1:5dd6801bb0d6 150 break;
annieluo2 1:5dd6801bb0d6 151
annieluo2 1:5dd6801bb0d6 152 case(4): // CASE LOW
annieluo2 1:5dd6801bb0d6 153 matrix.clear();
annieluo2 1:5dd6801bb0d6 154 for (int i = 0; i < 8; i++) {
annieluo2 1:5dd6801bb0d6 155 for (int j = 0; j < 8; j++) {
annieluo2 1:5dd6801bb0d6 156 if (low[i][j] == 1) {
annieluo2 1:5dd6801bb0d6 157 matrix.drawPixel(i, j, LED_ON);
annieluo2 1:5dd6801bb0d6 158 }
annieluo2 1:5dd6801bb0d6 159 }
annieluo2 1:5dd6801bb0d6 160 }
annieluo2 1:5dd6801bb0d6 161 matrix.writeDisplay();
annieluo2 1:5dd6801bb0d6 162 wait(1);
annieluo2 1:5dd6801bb0d6 163 break;
annieluo2 1:5dd6801bb0d6 164
annieluo2 1:5dd6801bb0d6 165 case(5): // CASE OFF
annieluo2 1:5dd6801bb0d6 166 matrix.clear();
annieluo2 1:5dd6801bb0d6 167 for (int i = 0; i < 8; i++) {
annieluo2 1:5dd6801bb0d6 168 for (int j = 0; j < 8; j++) {
annieluo2 1:5dd6801bb0d6 169 if (off[i][j] == 1) {
annieluo2 1:5dd6801bb0d6 170 matrix.drawPixel(i, j, LED_ON);
annieluo2 1:5dd6801bb0d6 171 }
annieluo2 1:5dd6801bb0d6 172 }
annieluo2 1:5dd6801bb0d6 173 }
annieluo2 1:5dd6801bb0d6 174 matrix.writeDisplay();
annieluo2 1:5dd6801bb0d6 175 wait(1);
annieluo2 1:5dd6801bb0d6 176 break;
annieluo2 1:5dd6801bb0d6 177
annieluo2 1:5dd6801bb0d6 178 default:
annieluo2 1:5dd6801bb0d6 179 break;
annieluo2 1:5dd6801bb0d6 180 }
annieluo2 1:5dd6801bb0d6 181
annieluo2 1:5dd6801bb0d6 182
annieluo2 1:5dd6801bb0d6 183 }
annieluo2 1:5dd6801bb0d6 184 }
annieluo2 0:d6c9b09b4042 185 }
annieluo2 0:d6c9b09b4042 186 }
annieluo2 0:d6c9b09b4042 187
annieluo2 0:d6c9b09b4042 188 void speaker_thread(void const* args)
annieluo2 0:d6c9b09b4042 189 {
annieluo2 0:d6c9b09b4042 190 while(1)
annieluo2 1:5dd6801bb0d6 191 {
annieluo2 1:5dd6801bb0d6 192 // check helper function for new song in GUI
annieluo2 0:d6c9b09b4042 193 // grab file here and put together string
annieluo2 0:d6c9b09b4042 194 // string song_title = "/sd/" + "" + ".wav";
annieluo2 0:d6c9b09b4042 195
annieluo2 0:d6c9b09b4042 196 FILE *wave_file;
annieluo2 0:d6c9b09b4042 197 wave_file=fopen("/sd/africa-toto.wav","r");
annieluo2 0:d6c9b09b4042 198
annieluo2 0:d6c9b09b4042 199 speaker_lock.lock();
annieluo2 0:d6c9b09b4042 200 waver.play(wave_file);
annieluo2 0:d6c9b09b4042 201 speaker_lock.unlock();
annieluo2 0:d6c9b09b4042 202 fclose(wave_file);
annieluo2 0:d6c9b09b4042 203 Thread::wait(100);
annieluo2 0:d6c9b09b4042 204
annieluo2 0:d6c9b09b4042 205 }
annieluo2 0:d6c9b09b4042 206 }
annieluo2 0:d6c9b09b4042 207
annieluo2 0:d6c9b09b4042 208
annieluo2 0:d6c9b09b4042 209 int main()
annieluo2 0:d6c9b09b4042 210 {
annieluo2 0:d6c9b09b4042 211
annieluo2 0:d6c9b09b4042 212 Thread th1(speaker_thread);
annieluo2 1:5dd6801bb0d6 213 Thread th2(display_thread);
annieluo2 1:5dd6801bb0d6 214
annieluo2 0:d6c9b09b4042 215 while(1) {
annieluo2 1:5dd6801bb0d6 216 myled = 1;
annieluo2 1:5dd6801bb0d6 217 wait(0.2);
annieluo2 1:5dd6801bb0d6 218 myled = 0;
annieluo2 1:5dd6801bb0d6 219 wait(0.2);
annieluo2 0:d6c9b09b4042 220 Thread::wait(100);
annieluo2 0:d6c9b09b4042 221 }
annieluo2 0:d6c9b09b4042 222
annieluo2 0:d6c9b09b4042 223 }