Matthew Golino / Mbed 2 deprecated FinalProject

Audio Reactive Infinity Mirror

Dependencies:   mbed-dsp mbed-rtos mbed

Infinity Mirror Project Page https://developer.mbed.org/users/mgolino/notebook/infinity-mirror/

main.cpp@0:85385a11b2da, 2015-12-12 (annotated)

Committer:
mgolino
Date:
Sat Dec 12 01:22:30 2015 +0000
Revision:
0:85385a11b2da
Audio Reactive Infinity Mirror

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mgolino 0:85385a11b2da 1 // ECE 4180 Final Project
mgolino 0:85385a11b2da 2 // Fall 2015
mgolino 0:85385a11b2da 3 // Matthew Ashcraft 4th year EE
mgolino 0:85385a11b2da 4 // Matthew Golino 5th year CE
mgolino 0:85385a11b2da 5 //
mgolino 0:85385a11b2da 6 // Bluetooth Controlled Audio Reactive Infinity Mirror
mgolino 0:85385a11b2da 7
mgolino 0:85385a11b2da 8 #include "mbed.h"
mgolino 0:85385a11b2da 9 #include "ble_mini.h"
mgolino 0:85385a11b2da 10 #include <iostream>
mgolino 0:85385a11b2da 11 #include "fftstuff.h"
mgolino 0:85385a11b2da 12
mgolino 0:85385a11b2da 13 ////////////////////////////////////////////////////////////////////////////////
mgolino 0:85385a11b2da 14 // MBED PIN DESIGNATION
mgolino 0:85385a11b2da 15 // DO NOT change unless accompanying hardware is altered
mgolino 0:85385a11b2da 16 ////////////////////////////////////////////////////////////////////////////////
mgolino 0:85385a11b2da 17 // Analog
mgolino 0:85385a11b2da 18 //AnalogIn mic(p15); // Analog input for the microphone
mgolino 0:85385a11b2da 19 //AnalogIn aux(p20); // Analog input for the DC offset aux cable input
mgolino 0:85385a11b2da 20 // PWM outputs for RGB LEDs
mgolino 0:85385a11b2da 21 PwmOut gled(p23);
mgolino 0:85385a11b2da 22 PwmOut rled(p22);
mgolino 0:85385a11b2da 23 PwmOut bled(p21);
mgolino 0:85385a11b2da 24 // Serial Interface for Mbed to PC
mgolino 0:85385a11b2da 25 Serial pc(USBTX, USBRX);
mgolino 0:85385a11b2da 26 // Serial Interface for Bluetooth Module to Mbed
mgolino 0:85385a11b2da 27 Serial device(p9,p10);
mgolino 0:85385a11b2da 28 // END MBED PIN DESIGNATION
mgolino 0:85385a11b2da 29
mgolino 0:85385a11b2da 30 ////////////////////////////////////////////////////////////////////////////////
mgolino 0:85385a11b2da 31 // GLOBAL VARIABLES
mgolino 0:85385a11b2da 32 // Variables used across multiple functions, simpler than passing to functions
mgolino 0:85385a11b2da 33 ////////////////////////////////////////////////////////////////////////////////
mgolino 0:85385a11b2da 34
mgolino 0:85385a11b2da 35 char buf[4]; // Char buffer for bluetooth commands
mgolino 0:85385a11b2da 36 // Boolean flags for audio sampling
mgolino 0:85385a11b2da 37 bool AuxIn = false;
mgolino 0:85385a11b2da 38 bool MicIn = false;
mgolino 0:85385a11b2da 39 bool inputSelect = false; //false = aux --- true = mic
mgolino 0:85385a11b2da 40 // Float variable used to write to LED PWM outputs
mgolino 0:85385a11b2da 41 float redVal = -1;
mgolino 0:85385a11b2da 42 float greenVal = -1;
mgolino 0:85385a11b2da 43 float blueVal = -1;
mgolino 0:85385a11b2da 44 // Float used to "save" previous values for manual writing
mgolino 0:85385a11b2da 45 float redHold = -1;
mgolino 0:85385a11b2da 46 float greenHold = -1;
mgolino 0:85385a11b2da 47 float blueHold = -1;
mgolino 0:85385a11b2da 48 //strobe values
mgolino 0:85385a11b2da 49 float strobeVal = -1;
mgolino 0:85385a11b2da 50 float strobeHold = 0;
mgolino 0:85385a11b2da 51 // END GLOBAL VARIABLES
mgolino 0:85385a11b2da 52
mgolino 0:85385a11b2da 53
mgolino 0:85385a11b2da 54 ////////////////////////////////////////////////////////////////////////////////
mgolino 0:85385a11b2da 55 // LED WRITING FUNCTIONS
mgolino 0:85385a11b2da 56 ////////////////////////////////////////////////////////////////////////////////
mgolino 0:85385a11b2da 57 // Write stored RGB values to PWM outputs
mgolino 0:85385a11b2da 58 void writeColors(float redVal, float greenVal, float blueVal, float strobeVal)
mgolino 0:85385a11b2da 59 {
mgolino 0:85385a11b2da 60 if (strobeVal > 0) {
mgolino 0:85385a11b2da 61 rled = 0;
mgolino 0:85385a11b2da 62 gled = 0;
mgolino 0:85385a11b2da 63 bled = 0;
mgolino 0:85385a11b2da 64 wait(strobeVal);
mgolino 0:85385a11b2da 65 }
mgolino 0:85385a11b2da 66 if ((redVal >= 0) || (greenVal >= 0) || (blueVal >= 0)) {
mgolino 0:85385a11b2da 67 rled = redVal;
mgolino 0:85385a11b2da 68 gled = greenVal;
mgolino 0:85385a11b2da 69 bled = blueVal;
mgolino 0:85385a11b2da 70 }
mgolino 0:85385a11b2da 71 }
mgolino 0:85385a11b2da 72 // END LED WRITING FUNCTIONS
mgolino 0:85385a11b2da 73
mgolino 0:85385a11b2da 74 int main() {
mgolino 0:85385a11b2da 75 // Initialize frequency window size
mgolino 0:85385a11b2da 76 // Set BLE mini baud rate
mgolino 0:85385a11b2da 77 device.baud(57600);
mgolino 0:85385a11b2da 78 // Floats used to "hold" RGB values
mgolino 0:85385a11b2da 79 // float redHold = -1;
mgolino 0:85385a11b2da 80 // float greenHold = -1;
mgolino 0:85385a11b2da 81 // float blueHold = -1;
mgolino 0:85385a11b2da 82 // Floats used to set and "hold" strobe setting
mgolino 0:85385a11b2da 83
mgolino 0:85385a11b2da 84 while(1) {
mgolino 0:85385a11b2da 85 if(device.readable()) {
mgolino 0:85385a11b2da 86 // Read in Bluetooth commands
mgolino 0:85385a11b2da 87 for(int i = 0; i < 4; i++){
mgolino 0:85385a11b2da 88 buf[i]=device.getc();
mgolino 0:85385a11b2da 89 pc.printf("%x ",buf[i]);
mgolino 0:85385a11b2da 90 }
mgolino 0:85385a11b2da 91 pc.printf("\n\r");
mgolino 0:85385a11b2da 92 pc.printf("done\n");
mgolino 0:85385a11b2da 93
mgolino 0:85385a11b2da 94 // Check cases for all different switch options based on buf[0];
mgolino 0:85385a11b2da 95 char whichInput = buf[0];
mgolino 0:85385a11b2da 96 // Check for Bluetooth Connectivity
mgolino 0:85385a11b2da 97 if(whichInput == BLE_CONNECTED){
mgolino 0:85385a11b2da 98 pc.printf("case0\n\n");
mgolino 0:85385a11b2da 99 //pretty lights for connect
mgolino 0:85385a11b2da 100 rled = 255;
mgolino 0:85385a11b2da 101 wait(0.25);
mgolino 0:85385a11b2da 102 rled=0;
mgolino 0:85385a11b2da 103 gled=255;
mgolino 0:85385a11b2da 104 wait(0.25);
mgolino 0:85385a11b2da 105 gled=0;
mgolino 0:85385a11b2da 106 bled=255;
mgolino 0:85385a11b2da 107 wait(0.25);
mgolino 0:85385a11b2da 108 bled=0;
mgolino 0:85385a11b2da 109 }
mgolino 0:85385a11b2da 110 else if(whichInput == LIGHTS_OFF_SWITCH){ // Manually turn off lights
mgolino 0:85385a11b2da 111 pc.printf("Turning All Lights Off\n\n");
mgolino 0:85385a11b2da 112 strobeVal = -1;
mgolino 0:85385a11b2da 113 if(buf[1]==0x01){
mgolino 0:85385a11b2da 114 redVal = 0.0f;
mgolino 0:85385a11b2da 115 greenVal = 0.0f;
mgolino 0:85385a11b2da 116 blueVal = 0.0f;
mgolino 0:85385a11b2da 117 }
mgolino 0:85385a11b2da 118 else if(buf[1]==0x00){
mgolino 0:85385a11b2da 119 redVal = -1.0f;
mgolino 0:85385a11b2da 120 greenVal = -1.0f;
mgolino 0:85385a11b2da 121 blueVal = -1.0f;
mgolino 0:85385a11b2da 122 }
mgolino 0:85385a11b2da 123 }
mgolino 0:85385a11b2da 124 else if(whichInput == IR_SWITCH){ // React to IR remote
mgolino 0:85385a11b2da 125 pc.printf("Listening to IR Remote\n\n");
mgolino 0:85385a11b2da 126 strobeVal = -1;
mgolino 0:85385a11b2da 127 //TBD
mgolino 0:85385a11b2da 128
mgolino 0:85385a11b2da 129
mgolino 0:85385a11b2da 130 }
mgolino 0:85385a11b2da 131
mgolino 0:85385a11b2da 132 else if(whichInput == MIC_SWITCH){ // React to microphone audio input
mgolino 0:85385a11b2da 133 pc.printf("Listening to Microphone for FFT\n\n");
mgolino 0:85385a11b2da 134 strobeVal = -1;
mgolino 0:85385a11b2da 135 if(buf[1]==0x00){ //switched off
mgolino 0:85385a11b2da 136 redVal = 0;
mgolino 0:85385a11b2da 137 greenVal = 0;
mgolino 0:85385a11b2da 138 blueVal = 0;
mgolino 0:85385a11b2da 139 }
mgolino 0:85385a11b2da 140 else if (buf[1]==0x01){ //switched on
mgolino 0:85385a11b2da 141 //MicIn = true; //FALSE = MIC CONTROLS -- REMEMBER TO FIX IN CODE
mgolino 0:85385a11b2da 142 inputSelect = true;
mgolino 0:85385a11b2da 143 float colors[3] = {0.0f,0.0f,0.0f};
mgolino 0:85385a11b2da 144
mgolino 0:85385a11b2da 145 while(!device.readable()){ // done to improve speed => bypass long if statement
mgolino 0:85385a11b2da 146 runFFT(inputSelect, colors);
mgolino 0:85385a11b2da 147 redVal = colors[0];
mgolino 0:85385a11b2da 148 greenVal = colors[1];
mgolino 0:85385a11b2da 149 blueVal = colors[2];;
mgolino 0:85385a11b2da 150 writeColors(redVal, greenVal, blueVal, strobeVal);
mgolino 0:85385a11b2da 151 }
mgolino 0:85385a11b2da 152 }
mgolino 0:85385a11b2da 153 redVal = -1;
mgolino 0:85385a11b2da 154 greenVal = -1;
mgolino 0:85385a11b2da 155 blueVal = -1;
mgolino 0:85385a11b2da 156 }
mgolino 0:85385a11b2da 157 else if(whichInput == AUX_SWITCH){ // React to aux cable audio input
mgolino 0:85385a11b2da 158 pc.printf("Listening to Aux for FFT\n\n");
mgolino 0:85385a11b2da 159 strobeVal = -1;
mgolino 0:85385a11b2da 160 if(buf[1]==0x00){ //switched off
mgolino 0:85385a11b2da 161 redVal = 0;
mgolino 0:85385a11b2da 162 greenVal = 0;
mgolino 0:85385a11b2da 163 blueVal = 0;
mgolino 0:85385a11b2da 164 }
mgolino 0:85385a11b2da 165 else if (buf[1]==0x01){ //switched on
mgolino 0:85385a11b2da 166 inputSelect = false;
mgolino 0:85385a11b2da 167 float colors[3] = {0.0f,0.0f,0.0f};
mgolino 0:85385a11b2da 168
mgolino 0:85385a11b2da 169 while(!device.readable()){ // done to improve speed => bypass long if statement
mgolino 0:85385a11b2da 170 runFFT(inputSelect, colors);
mgolino 0:85385a11b2da 171 redVal = colors[0];
mgolino 0:85385a11b2da 172 greenVal = colors[1];
mgolino 0:85385a11b2da 173 blueVal = colors[2];;
mgolino 0:85385a11b2da 174 writeColors(redVal, greenVal, blueVal, strobeVal);
mgolino 0:85385a11b2da 175 }
mgolino 0:85385a11b2da 176 }
mgolino 0:85385a11b2da 177 redVal = -1;
mgolino 0:85385a11b2da 178 greenVal = -1;
mgolino 0:85385a11b2da 179 blueVal = -1;
mgolino 0:85385a11b2da 180 }
mgolino 0:85385a11b2da 181 else if(whichInput == MANUAL_SWITCH){ // Manual color control
mgolino 0:85385a11b2da 182 pc.printf("Colors are Being Controlled Manually\n\n");
mgolino 0:85385a11b2da 183 strobeVal = strobeHold;
mgolino 0:85385a11b2da 184 if ((redVal < 0) && (redHold < 0)){
mgolino 0:85385a11b2da 185 redVal = 128.0f/255;
mgolino 0:85385a11b2da 186 greenVal = 128.0f/255;
mgolino 0:85385a11b2da 187 blueVal = 128.0f/255;
mgolino 0:85385a11b2da 188 }
mgolino 0:85385a11b2da 189 else{
mgolino 0:85385a11b2da 190 redVal = redHold;
mgolino 0:85385a11b2da 191 greenVal = greenHold;
mgolino 0:85385a11b2da 192 blueVal = blueHold;
mgolino 0:85385a11b2da 193 }
mgolino 0:85385a11b2da 194
mgolino 0:85385a11b2da 195 if(buf[1] == 0x00){
mgolino 0:85385a11b2da 196 redVal = -1;
mgolino 0:85385a11b2da 197 greenVal = -1;
mgolino 0:85385a11b2da 198 blueVal = -1;
mgolino 0:85385a11b2da 199 }
mgolino 0:85385a11b2da 200 }
mgolino 0:85385a11b2da 201 else if(whichInput == STROBE_SPEED){ // Strobe feature for manual control
mgolino 0:85385a11b2da 202 pc.printf("Strobe Speed Changed\n\n");
mgolino 0:85385a11b2da 203 float strobeSpeed = buf[1]; // Value 0-255 to be used in determining strobe speed
mgolino 0:85385a11b2da 204 //determine how to control strobe
mgolino 0:85385a11b2da 205 //pc.printf("Strobe rate: %f", strobeSpeed);
mgolino 0:85385a11b2da 206 strobeVal = 0.35 - (strobeSpeed*0.35/255);
mgolino 0:85385a11b2da 207 if(strobeSpeed == 0){
mgolino 0:85385a11b2da 208 strobeVal=0;
mgolino 0:85385a11b2da 209 }
mgolino 0:85385a11b2da 210 strobeHold = strobeVal;
mgolino 0:85385a11b2da 211 }
mgolino 0:85385a11b2da 212 else if(whichInput == COLOR_SELECT){
mgolino 0:85385a11b2da 213 pc.printf("case7\n\n");
mgolino 0:85385a11b2da 214 // Convert from hex to float
mgolino 0:85385a11b2da 215 redVal = buf[1];
mgolino 0:85385a11b2da 216 greenVal = buf[2];
mgolino 0:85385a11b2da 217 blueVal = buf[3];
mgolino 0:85385a11b2da 218
mgolino 0:85385a11b2da 219 // Put in range from 0-1
mgolino 0:85385a11b2da 220 redVal=redVal/255;
mgolino 0:85385a11b2da 221 greenVal=greenVal/255;
mgolino 0:85385a11b2da 222 blueVal=blueVal/255;
mgolino 0:85385a11b2da 223
mgolino 0:85385a11b2da 224 // Store for holding purposes
mgolino 0:85385a11b2da 225 redHold = redVal;
mgolino 0:85385a11b2da 226 greenHold = greenVal;
mgolino 0:85385a11b2da 227 blueHold = blueVal;
mgolino 0:85385a11b2da 228 }
mgolino 0:85385a11b2da 229 else{
mgolino 0:85385a11b2da 230 pc.printf("CASE CONFUSED\n\n");
mgolino 0:85385a11b2da 231 }
mgolino 0:85385a11b2da 232 } // End readable
mgolino 0:85385a11b2da 233
mgolino 0:85385a11b2da 234 else {
mgolino 0:85385a11b2da 235 //if we can detect BT or no BT
mgolino 0:85385a11b2da 236 //if(//conditions for aux mode)
mgolino 0:85385a11b2da 237 //else if (conditions for mic mode)
mgolino 0:85385a11b2da 238 //else IR mode
mgolino 0:85385a11b2da 239
mgolino 0:85385a11b2da 240 } // End !readable
mgolino 0:85385a11b2da 241
mgolino 0:85385a11b2da 242 if(redVal < 0){
mgolino 0:85385a11b2da 243 writeColors(0,0,0,strobeVal);
mgolino 0:85385a11b2da 244 }
mgolino 0:85385a11b2da 245 else{
mgolino 0:85385a11b2da 246 writeColors(redVal, greenVal, blueVal, strobeVal);
mgolino 0:85385a11b2da 247 }
mgolino 0:85385a11b2da 248
mgolino 0:85385a11b2da 249 wait(0.1);
mgolino 0:85385a11b2da 250 }// End while(1) loop
mgolino 0:85385a11b2da 251 }// End main
mgolino 0:85385a11b2da 252