Steven Swenson / Mbed 2 deprecated tuner

A program to automatically tune a guitar. Written by Justin Reidhead and Steven Swenson

Dependencies:   FFT FrequencyFinder Motor NewTextLCD PinDetect mbed strings

main.cpp@7:057bcd99a3f8, 2012-04-20 (annotated)

Committer:
melangeaddict
Date:
Fri Apr 20 17:28:27 2012 +0000
Revision:
7:057bcd99a3f8
Parent:
6:46fb12f6ace1
Child:
8:651fbf5ae98a
kinda works; lcd looks good

Who changed what in which revision?

UserRevisionLine numberNew contents of line
melangeaddict 2:9c0a83c5ded5 1 #include "mbed.h"
melangeaddict 2:9c0a83c5ded5 2 #include "Motor.h"
melangeaddict 2:9c0a83c5ded5 3 #include "FrequencyFinder.h"
melangeaddict 2:9c0a83c5ded5 4 #include "NewTextLCD.h"
melangeaddict 2:9c0a83c5ded5 5 #include "PinDetect.h"
melangeaddict 2:9c0a83c5ded5 6 #include "strings.h"
melangeaddict 3:c672e782f19b 7 //#include "vector"
melangeaddict 2:9c0a83c5ded5 8
melangeaddict 3:c672e782f19b 9 //using namespace std;
melangeaddict 2:9c0a83c5ded5 10 //***************************************************
melangeaddict 2:9c0a83c5ded5 11 //***************Globals*****************************
melangeaddict 2:9c0a83c5ded5 12 PinDetect string_but(p11);
melangeaddict 3:c672e782f19b 13 PinDetect pitch_but(p12);//These are the buttons the user will interface with
melangeaddict 2:9c0a83c5ded5 14 PinDetect start_but(p13);
melangeaddict 2:9c0a83c5ded5 15 PinDetect mode_but(p14);
melangeaddict 2:9c0a83c5ded5 16
melangeaddict 5:c0fd99f07536 17 //DigitalOut led1(LED1);//For diagnostic purposes
melangeaddict 5:c0fd99f07536 18 //DigitalOut led2(LED2);
melangeaddict 2:9c0a83c5ded5 19
melangeaddict 6:46fb12f6ace1 20 TextLCD lcd(p5,p6,p7,p8,p9,p10);//Our method of communication with LCD screen (rs e d4 d5 d6 d7)
melangeaddict 7:057bcd99a3f8 21 Motor motor(p24,p19,p21);//Setup for the motor (enable, direction, step)
melangeaddict 7:057bcd99a3f8 22 FrequencyFinder guitar(p20);//Interface to get data from guitar (input pin)
melangeaddict 7:057bcd99a3f8 23 AnalogOut bias(p18);//1.6v DC offset
melangeaddict 6:46fb12f6ace1 24
melangeaddict 6:46fb12f6ace1 25 DigitalOut ledBlue(p25);
melangeaddict 6:46fb12f6ace1 26 DigitalOut ledGreen(p23);
melangeaddict 6:46fb12f6ace1 27 DigitalOut ledRed(p24);
melangeaddict 6:46fb12f6ace1 28
melangeaddict 6:46fb12f6ace1 29
melangeaddict 3:c672e782f19b 30 short selected_string;//Holds on to the selected string
melangeaddict 3:c672e782f19b 31 bool current_mode;//Tuning mode or winding mode
melangeaddict 3:c672e782f19b 32 bool start_tuning;//Bool to tell whether to start the tuning process or not
melangeaddict 3:c672e782f19b 33 bool wind_up;//Bool for winding mode - turn motor up
melangeaddict 3:c672e782f19b 34 bool wind_down;//Bool for winding mode - turn motor down
melangeaddict 7:057bcd99a3f8 35 short up, down;//To move the motor up or down
melangeaddict 2:9c0a83c5ded5 36
melangeaddict 3:c672e782f19b 37 //vector<strings> strings_array;//Holds strings objects - basically the frequency data for each string
melangeaddict 3:c672e782f19b 38 strings strings_array[6];
melangeaddict 2:9c0a83c5ded5 39
melangeaddict 2:9c0a83c5ded5 40 //***************************************************
melangeaddict 2:9c0a83c5ded5 41 //*****************constants*************************
melangeaddict 3:c672e782f19b 42 const bool tuning_mode=false;//For setting the mode to tuning or winding
melangeaddict 2:9c0a83c5ded5 43 const bool winding_mode=true;
melangeaddict 2:9c0a83c5ded5 44
melangeaddict 2:9c0a83c5ded5 45 //***************************************************
melangeaddict 2:9c0a83c5ded5 46 //******************prototypes***********************
melangeaddict 2:9c0a83c5ded5 47 void device_init();
melangeaddict 2:9c0a83c5ded5 48
melangeaddict 2:9c0a83c5ded5 49 void string_sel();
melangeaddict 2:9c0a83c5ded5 50 void pitch_sel();
melangeaddict 2:9c0a83c5ded5 51 void start();
melangeaddict 2:9c0a83c5ded5 52 void stop();
melangeaddict 2:9c0a83c5ded5 53 void mode();
melangeaddict 2:9c0a83c5ded5 54 void do_nothing();
melangeaddict 3:c672e782f19b 55 void wind_up_start();
melangeaddict 3:c672e782f19b 56 void wind_down_start();
melangeaddict 3:c672e782f19b 57 void wind_up_stop();
melangeaddict 3:c672e782f19b 58 void wind_down_stop();
melangeaddict 2:9c0a83c5ded5 59
melangeaddict 2:9c0a83c5ded5 60 void button_init();
melangeaddict 2:9c0a83c5ded5 61 void setup_buttons();
melangeaddict 2:9c0a83c5ded5 62 void output_menu();
melangeaddict 2:9c0a83c5ded5 63 void motor_calibration();
melangeaddict 2:9c0a83c5ded5 64 bool check_threshold(float);
melangeaddict 6:46fb12f6ace1 65 void LED_initialize();
melangeaddict 6:46fb12f6ace1 66 void set_LED(int led, int value);
melangeaddict 2:9c0a83c5ded5 67 //*************************************************
melangeaddict 2:9c0a83c5ded5 68 //*********************main************************
melangeaddict 2:9c0a83c5ded5 69 int main() {
melangeaddict 6:46fb12f6ace1 70
melangeaddict 3:c672e782f19b 71 lcd.cls();//Clear the LCD
melangeaddict 3:c672e782f19b 72 lcd.printf("Perfect\n Pitch");//Modify to whatever we want to name this thing
melangeaddict 6:46fb12f6ace1 73 LED_initialize();
melangeaddict 7:057bcd99a3f8 74
melangeaddict 2:9c0a83c5ded5 75
melangeaddict 3:c672e782f19b 76 device_init();//Setup buttons and set global variables
melangeaddict 3:c672e782f19b 77
melangeaddict 2:9c0a83c5ded5 78 int state=0,next_state=0;
melangeaddict 2:9c0a83c5ded5 79 //float old_freq=0;
melangeaddict 2:9c0a83c5ded5 80 float new_freq=0;
melangeaddict 2:9c0a83c5ded5 81 float desired_freq=0;
melangeaddict 2:9c0a83c5ded5 82 strings *temp=&strings_array[0];
melangeaddict 7:057bcd99a3f8 83 wait(.5);
melangeaddict 3:c672e782f19b 84
melangeaddict 3:c672e782f19b 85 output_menu();
melangeaddict 3:c672e782f19b 86
melangeaddict 2:9c0a83c5ded5 87 while (1) {
melangeaddict 2:9c0a83c5ded5 88 state=next_state;
melangeaddict 2:9c0a83c5ded5 89
melangeaddict 2:9c0a83c5ded5 90 switch (state) {
melangeaddict 2:9c0a83c5ded5 91 //------------------------------------
melangeaddict 2:9c0a83c5ded5 92 case 0://Stay here till the user selects the string and pitch
melangeaddict 2:9c0a83c5ded5 93 if (start_tuning==true) {
melangeaddict 2:9c0a83c5ded5 94 next_state=1;
melangeaddict 2:9c0a83c5ded5 95 } else {
melangeaddict 2:9c0a83c5ded5 96 next_state=0;
melangeaddict 3:c672e782f19b 97 //output_menu();
melangeaddict 2:9c0a83c5ded5 98 }
melangeaddict 2:9c0a83c5ded5 99 break;
melangeaddict 2:9c0a83c5ded5 100 //----------------------------------------
melangeaddict 2:9c0a83c5ded5 101 case 1://motor calibration state
melangeaddict 3:c672e782f19b 102 motor_calibration();//determine which direction is up and down for the motor
melangeaddict 2:9c0a83c5ded5 103 next_state=2;
melangeaddict 2:9c0a83c5ded5 104 break;
melangeaddict 2:9c0a83c5ded5 105 //-----------------------------------------
melangeaddict 2:9c0a83c5ded5 106 case 2://begin the actual tuning
melangeaddict 2:9c0a83c5ded5 107 temp=&strings_array[selected_string];
melangeaddict 3:c672e782f19b 108 desired_freq=temp->get_freq();//Get the desired frequency for the string selected
melangeaddict 2:9c0a83c5ded5 109
melangeaddict 2:9c0a83c5ded5 110 next_state=3;
melangeaddict 2:9c0a83c5ded5 111 break;
melangeaddict 2:9c0a83c5ded5 112 //-----------------------------------------
melangeaddict 3:c672e782f19b 113 case 3://Do the dirty work of tuning
melangeaddict 3:c672e782f19b 114 new_freq=guitar.find_frequency();//Get the current frequency of the string
melangeaddict 3:c672e782f19b 115 if (check_threshold(new_freq)) {//The check_threshold function makes sure the frequency is valid (less than 500 Hz)
melangeaddict 2:9c0a83c5ded5 116 if ((desired_freq-.5)<new_freq && (desired_freq+.5)>new_freq) {//We are within .5Hz of the desired frequency
melangeaddict 2:9c0a83c5ded5 117 lcd.cls();
melangeaddict 5:c0fd99f07536 118 lcd.printf("String %d\ntuned",selected_string+1);
melangeaddict 2:9c0a83c5ded5 119 wait(.5);
melangeaddict 2:9c0a83c5ded5 120
melangeaddict 2:9c0a83c5ded5 121 start_tuning=false;
melangeaddict 5:c0fd99f07536 122 output_menu();
melangeaddict 5:c0fd99f07536 123 setup_buttons();
melangeaddict 2:9c0a83c5ded5 124 next_state=0;
melangeaddict 3:c672e782f19b 125 } else if ((desired_freq-.5)>new_freq) {//We are too low, and need to turn the string tigher
melangeaddict 5:c0fd99f07536 126 motor.motor_turn(up,10);//TODO:Adjust # of steps
melangeaddict 2:9c0a83c5ded5 127 next_state=3;
melangeaddict 3:c672e782f19b 128 } else {//We are too high, and need to loosen the string
melangeaddict 5:c0fd99f07536 129 motor.motor_turn(down,10);
melangeaddict 2:9c0a83c5ded5 130 next_state=3;
melangeaddict 2:9c0a83c5ded5 131 }
melangeaddict 2:9c0a83c5ded5 132 } else {
melangeaddict 2:9c0a83c5ded5 133 next_state=3;
melangeaddict 2:9c0a83c5ded5 134 }
melangeaddict 2:9c0a83c5ded5 135
melangeaddict 2:9c0a83c5ded5 136 //TODO:Determine number of steps per frequency change
melangeaddict 2:9c0a83c5ded5 137 //old_freq=new_freq;
melangeaddict 2:9c0a83c5ded5 138 break;
melangeaddict 2:9c0a83c5ded5 139 //-----------------------------------------
melangeaddict 3:c672e782f19b 140 case 4://Winding mode
melangeaddict 3:c672e782f19b 141 if (current_mode==winding_mode) {
melangeaddict 3:c672e782f19b 142 if (wind_up) {
melangeaddict 3:c672e782f19b 143 motor.motor_turn(up,5);//TODO:Adjust number of turns
melangeaddict 3:c672e782f19b 144 }
melangeaddict 3:c672e782f19b 145
melangeaddict 3:c672e782f19b 146 if (wind_down) {
melangeaddict 3:c672e782f19b 147 motor.motor_turn(down,5);//TODO:Adjust number of turns
melangeaddict 3:c672e782f19b 148 }
melangeaddict 3:c672e782f19b 149 next_state=4;
melangeaddict 3:c672e782f19b 150 } else {
melangeaddict 7:057bcd99a3f8 151 output_menu();
melangeaddict 7:057bcd99a3f8 152 wind_up=false;
melangeaddict 7:057bcd99a3f8 153 wind_down=false;
melangeaddict 7:057bcd99a3f8 154 setup_buttons();
melangeaddict 3:c672e782f19b 155 next_state=0;
melangeaddict 3:c672e782f19b 156 }
melangeaddict 3:c672e782f19b 157 break;
melangeaddict 2:9c0a83c5ded5 158 default:
melangeaddict 2:9c0a83c5ded5 159 break;
melangeaddict 3:c672e782f19b 160 }//end switch
melangeaddict 2:9c0a83c5ded5 161 wait_ms(5);
melangeaddict 2:9c0a83c5ded5 162
melangeaddict 2:9c0a83c5ded5 163 if (start_tuning==false) {//If the stop button is pressed, the state machine returns to user input
melangeaddict 2:9c0a83c5ded5 164 next_state=0;
melangeaddict 4:e370f322a697 165 //setup_buttons();
melangeaddict 4:e370f322a697 166 //output_menu();
melangeaddict 2:9c0a83c5ded5 167 }
melangeaddict 3:c672e782f19b 168
melangeaddict 3:c672e782f19b 169 if (current_mode==winding_mode) {//TODO:Debug this
melangeaddict 3:c672e782f19b 170 next_state=4;
melangeaddict 3:c672e782f19b 171 }
melangeaddict 3:c672e782f19b 172
melangeaddict 3:c672e782f19b 173 if (start_tuning) {
melangeaddict 3:c672e782f19b 174 lcd.cls();
melangeaddict 7:057bcd99a3f8 175
melangeaddict 7:057bcd99a3f8 176 lcd.locate(9,0);
melangeaddict 7:057bcd99a3f8 177 lcd.printf("%f",new_freq);
melangeaddict 7:057bcd99a3f8 178 lcd.locate(9,1);
melangeaddict 7:057bcd99a3f8 179 lcd.printf("%f",desired_freq);
melangeaddict 7:057bcd99a3f8 180
melangeaddict 5:c0fd99f07536 181 lcd.locate(0,1);
melangeaddict 7:057bcd99a3f8 182 lcd.printf("Desired");
melangeaddict 7:057bcd99a3f8 183 lcd.locate(0,0);
melangeaddict 7:057bcd99a3f8 184 lcd.printf("Detected");
melangeaddict 3:c672e782f19b 185 }
melangeaddict 3:c672e782f19b 186
melangeaddict 3:c672e782f19b 187 }//end while
melangeaddict 2:9c0a83c5ded5 188
melangeaddict 2:9c0a83c5ded5 189 // return 0;
melangeaddict 2:9c0a83c5ded5 190 }
melangeaddict 2:9c0a83c5ded5 191
melangeaddict 2:9c0a83c5ded5 192 //***************************************************
melangeaddict 2:9c0a83c5ded5 193 //******************functions************************
melangeaddict 3:c672e782f19b 194 //Display the string and pitch selection menu
melangeaddict 2:9c0a83c5ded5 195 void output_menu() {
melangeaddict 2:9c0a83c5ded5 196 lcd.cls();
melangeaddict 4:e370f322a697 197 lcd.printf("Select String: %d",selected_string+1);
melangeaddict 4:e370f322a697 198
melangeaddict 3:c672e782f19b 199 lcd.locate(0,1);
melangeaddict 3:c672e782f19b 200 strings *temp=&strings_array[selected_string];
melangeaddict 3:c672e782f19b 201 lcd.printf("Select Pitch: ");
melangeaddict 5:c0fd99f07536 202 lcd.printf("%s",temp->get_note());
melangeaddict 5:c0fd99f07536 203 //wait(.5);
melangeaddict 2:9c0a83c5ded5 204 }
melangeaddict 2:9c0a83c5ded5 205
melangeaddict 2:9c0a83c5ded5 206 //***************************************************
melangeaddict 3:c672e782f19b 207 //Initialize the buttons
melangeaddict 2:9c0a83c5ded5 208 void button_init() {
melangeaddict 2:9c0a83c5ded5 209 string_but.mode( PullDown );
melangeaddict 2:9c0a83c5ded5 210 string_but.setSampleFrequency();
melangeaddict 2:9c0a83c5ded5 211
melangeaddict 2:9c0a83c5ded5 212 pitch_but.mode( PullDown );
melangeaddict 2:9c0a83c5ded5 213 pitch_but.setSampleFrequency();
melangeaddict 2:9c0a83c5ded5 214
melangeaddict 2:9c0a83c5ded5 215 start_but.mode( PullDown );
melangeaddict 2:9c0a83c5ded5 216 start_but.setSampleFrequency();
melangeaddict 2:9c0a83c5ded5 217
melangeaddict 2:9c0a83c5ded5 218 mode_but.mode( PullDown );
melangeaddict 2:9c0a83c5ded5 219 mode_but.setSampleFrequency();
melangeaddict 4:e370f322a697 220
melangeaddict 4:e370f322a697 221 setup_buttons();
melangeaddict 2:9c0a83c5ded5 222 }
melangeaddict 2:9c0a83c5ded5 223
melangeaddict 2:9c0a83c5ded5 224 //***************************************************
melangeaddict 3:c672e782f19b 225 //Depending on the current mode, the buttons do different things
melangeaddict 2:9c0a83c5ded5 226 void setup_buttons() {
melangeaddict 3:c672e782f19b 227 if (current_mode==tuning_mode) {//Tuning mode
melangeaddict 2:9c0a83c5ded5 228 string_but.attach_asserted(&string_sel);
melangeaddict 3:c672e782f19b 229 string_but.attach_deasserted(&do_nothing);
melangeaddict 2:9c0a83c5ded5 230 pitch_but.attach_asserted(&pitch_sel);
melangeaddict 3:c672e782f19b 231 pitch_but.attach_deasserted(&do_nothing);
melangeaddict 2:9c0a83c5ded5 232 start_but.attach_asserted(&start);
melangeaddict 2:9c0a83c5ded5 233 mode_but.attach_asserted(&mode);
melangeaddict 3:c672e782f19b 234 } else {//Winding mode
melangeaddict 3:c672e782f19b 235 string_but.attach_asserted(&wind_up_start);
melangeaddict 3:c672e782f19b 236 string_but.attach_deasserted(&wind_up_stop);
melangeaddict 3:c672e782f19b 237 pitch_but.attach_asserted(&wind_down_start);
melangeaddict 3:c672e782f19b 238 pitch_but.attach_deasserted(&wind_down_stop);
melangeaddict 2:9c0a83c5ded5 239 start_but.attach_asserted(&do_nothing);
melangeaddict 2:9c0a83c5ded5 240 mode_but.attach_asserted(&mode);
melangeaddict 2:9c0a83c5ded5 241 }
melangeaddict 2:9c0a83c5ded5 242 }
melangeaddict 2:9c0a83c5ded5 243 //***************************************************
melangeaddict 3:c672e782f19b 244 //Change the selected string - there are only six strings
melangeaddict 2:9c0a83c5ded5 245 void string_sel() {
melangeaddict 2:9c0a83c5ded5 246 selected_string++;
melangeaddict 4:e370f322a697 247 if (selected_string>5)
melangeaddict 4:e370f322a697 248 selected_string=0;
melangeaddict 2:9c0a83c5ded5 249
melangeaddict 5:c0fd99f07536 250 strings *temp=&strings_array[selected_string];
melangeaddict 5:c0fd99f07536 251 temp->reset_index();
melangeaddict 5:c0fd99f07536 252
melangeaddict 2:9c0a83c5ded5 253 output_menu();
melangeaddict 2:9c0a83c5ded5 254 }
melangeaddict 2:9c0a83c5ded5 255 //***************************************************
melangeaddict 3:c672e782f19b 256 //Change the pitch of the selected string
melangeaddict 2:9c0a83c5ded5 257 void pitch_sel() {
melangeaddict 2:9c0a83c5ded5 258 strings *temp=&strings_array[selected_string];
melangeaddict 2:9c0a83c5ded5 259 temp->inc_index();
melangeaddict 2:9c0a83c5ded5 260
melangeaddict 2:9c0a83c5ded5 261 output_menu();
melangeaddict 2:9c0a83c5ded5 262 }
melangeaddict 2:9c0a83c5ded5 263 //***************************************************
melangeaddict 3:c672e782f19b 264 //Start the tuning process
melangeaddict 2:9c0a83c5ded5 265 void start() {
melangeaddict 2:9c0a83c5ded5 266 start_tuning=true;
melangeaddict 3:c672e782f19b 267
melangeaddict 3:c672e782f19b 268 string_but.attach_asserted(&do_nothing);//Disable the other buttons
melangeaddict 5:c0fd99f07536 269 string_but.attach_deasserted(&do_nothing);
melangeaddict 3:c672e782f19b 270 pitch_but.attach_asserted(&do_nothing);
melangeaddict 5:c0fd99f07536 271 pitch_but.attach_deasserted(&do_nothing);
melangeaddict 3:c672e782f19b 272 start_but.attach_asserted(&stop); //except for the start/stop button
melangeaddict 3:c672e782f19b 273 mode_but.attach_asserted(&do_nothing);
melangeaddict 2:9c0a83c5ded5 274 }
melangeaddict 2:9c0a83c5ded5 275 //***************************************************
melangeaddict 2:9c0a83c5ded5 276 void mode() {
melangeaddict 2:9c0a83c5ded5 277 if (current_mode==tuning_mode) {
melangeaddict 2:9c0a83c5ded5 278 current_mode=winding_mode;
melangeaddict 2:9c0a83c5ded5 279 lcd.cls();
melangeaddict 2:9c0a83c5ded5 280 lcd.printf("Winding Mode");
melangeaddict 4:e370f322a697 281 wait(1);
melangeaddict 4:e370f322a697 282 lcd.cls();
melangeaddict 5:c0fd99f07536 283 lcd.printf("String for up\nPitch for down");
melangeaddict 2:9c0a83c5ded5 284 } else {
melangeaddict 2:9c0a83c5ded5 285 current_mode=tuning_mode;
melangeaddict 2:9c0a83c5ded5 286 lcd.cls();
melangeaddict 2:9c0a83c5ded5 287 lcd.printf("Tuning Mode");
melangeaddict 3:c672e782f19b 288 wait(.5);
melangeaddict 4:e370f322a697 289 output_menu();
melangeaddict 2:9c0a83c5ded5 290 }
melangeaddict 3:c672e782f19b 291 setup_buttons();//Change the functions the buttons connect to
melangeaddict 2:9c0a83c5ded5 292 }
melangeaddict 2:9c0a83c5ded5 293 //***************************************************
melangeaddict 2:9c0a83c5ded5 294 void stop() {
melangeaddict 2:9c0a83c5ded5 295 start_tuning=false;
melangeaddict 7:057bcd99a3f8 296
melangeaddict 7:057bcd99a3f8 297 output_menu();
melangeaddict 7:057bcd99a3f8 298 setup_buttons();
melangeaddict 2:9c0a83c5ded5 299 }
melangeaddict 2:9c0a83c5ded5 300 //***************************************************
melangeaddict 2:9c0a83c5ded5 301 void do_nothing() {
melangeaddict 2:9c0a83c5ded5 302 return;
melangeaddict 2:9c0a83c5ded5 303 }
melangeaddict 2:9c0a83c5ded5 304 //***************************************************
melangeaddict 3:c672e782f19b 305 void wind_up_start() {
melangeaddict 3:c672e782f19b 306 wind_up=true;
melangeaddict 2:9c0a83c5ded5 307 }
melangeaddict 2:9c0a83c5ded5 308 //***************************************************
melangeaddict 3:c672e782f19b 309 void wind_up_stop() {
melangeaddict 3:c672e782f19b 310 wind_up=false;
melangeaddict 3:c672e782f19b 311 }
melangeaddict 3:c672e782f19b 312 //***************************************************
melangeaddict 3:c672e782f19b 313 void wind_down_start() {
melangeaddict 3:c672e782f19b 314 wind_down=true;
melangeaddict 3:c672e782f19b 315 }
melangeaddict 3:c672e782f19b 316 //***************************************************
melangeaddict 3:c672e782f19b 317 void wind_down_stop() {
melangeaddict 3:c672e782f19b 318 wind_down=false;
melangeaddict 2:9c0a83c5ded5 319 }
melangeaddict 2:9c0a83c5ded5 320 //***************************************************
melangeaddict 2:9c0a83c5ded5 321 void device_init() {
melangeaddict 3:c672e782f19b 322
melangeaddict 2:9c0a83c5ded5 323 strings string1(1);
melangeaddict 2:9c0a83c5ded5 324 strings string2(2);
melangeaddict 2:9c0a83c5ded5 325 strings string3(3);
melangeaddict 2:9c0a83c5ded5 326 strings string4(4);
melangeaddict 2:9c0a83c5ded5 327 strings string5(5);
melangeaddict 2:9c0a83c5ded5 328 strings string6(6);
melangeaddict 2:9c0a83c5ded5 329
melangeaddict 3:c672e782f19b 330 strings_array[0]=string1;
melangeaddict 3:c672e782f19b 331 strings_array[1]=string2;
melangeaddict 3:c672e782f19b 332 strings_array[2]=string3;
melangeaddict 3:c672e782f19b 333 strings_array[3]=string4;
melangeaddict 3:c672e782f19b 334 strings_array[4]=string5;
melangeaddict 3:c672e782f19b 335 strings_array[5]=string6;
melangeaddict 3:c672e782f19b 336
melangeaddict 4:e370f322a697 337 selected_string=5;
melangeaddict 2:9c0a83c5ded5 338 current_mode=tuning_mode;
melangeaddict 2:9c0a83c5ded5 339 start_tuning=false;
melangeaddict 7:057bcd99a3f8 340 up=1;
melangeaddict 7:057bcd99a3f8 341 down=0;
melangeaddict 7:057bcd99a3f8 342 wind_up=false;
melangeaddict 7:057bcd99a3f8 343 wind_down=false;
melangeaddict 7:057bcd99a3f8 344 bias=.5;
melangeaddict 2:9c0a83c5ded5 345
melangeaddict 2:9c0a83c5ded5 346 button_init();
melangeaddict 2:9c0a83c5ded5 347
melangeaddict 2:9c0a83c5ded5 348 output_menu();
melangeaddict 3:c672e782f19b 349
melangeaddict 2:9c0a83c5ded5 350 }
melangeaddict 2:9c0a83c5ded5 351 //***************************************************
melangeaddict 2:9c0a83c5ded5 352 void motor_calibration() {
melangeaddict 2:9c0a83c5ded5 353 lcd.cls();
melangeaddict 2:9c0a83c5ded5 354 lcd.printf("Calibrate Motor");
melangeaddict 3:c672e782f19b 355 wait(.5);
melangeaddict 2:9c0a83c5ded5 356
melangeaddict 2:9c0a83c5ded5 357 float freq=0, freq_up=0, freq_down=0;
melangeaddict 2:9c0a83c5ded5 358 bool done=false;
melangeaddict 2:9c0a83c5ded5 359 lcd.cls();
melangeaddict 2:9c0a83c5ded5 360 lcd.printf("Please pluck\nstring");
melangeaddict 4:e370f322a697 361 wait(1);
melangeaddict 2:9c0a83c5ded5 362
melangeaddict 2:9c0a83c5ded5 363 //motor.motor_turn(up,25)//TODO: Adjust the number of steps here
melangeaddict 2:9c0a83c5ded5 364 //On second thought, we don't need to tune up and down for this, we can find the current frequency
melangeaddict 2:9c0a83c5ded5 365 //and then turn the peg for the two frequencies!
melangeaddict 2:9c0a83c5ded5 366 while (!done) {
melangeaddict 2:9c0a83c5ded5 367 freq=guitar.find_frequency();
melangeaddict 2:9c0a83c5ded5 368
melangeaddict 2:9c0a83c5ded5 369 if (check_threshold(freq)) {
melangeaddict 3:c672e782f19b 370 lcd.cls();
melangeaddict 2:9c0a83c5ded5 371 freq_up=freq;
melangeaddict 2:9c0a83c5ded5 372 done=true;
melangeaddict 2:9c0a83c5ded5 373 }
melangeaddict 4:e370f322a697 374
melangeaddict 4:e370f322a697 375 if (start_tuning==false)
melangeaddict 4:e370f322a697 376 break;
melangeaddict 2:9c0a83c5ded5 377 }
melangeaddict 2:9c0a83c5ded5 378 motor.motor_turn(down,25);//TODO: Adjust the number of steps here
melangeaddict 2:9c0a83c5ded5 379 done=false;
melangeaddict 2:9c0a83c5ded5 380 while (!done) {
melangeaddict 2:9c0a83c5ded5 381 freq=guitar.find_frequency();
melangeaddict 2:9c0a83c5ded5 382
melangeaddict 2:9c0a83c5ded5 383 if (check_threshold(freq)) {
melangeaddict 3:c672e782f19b 384 lcd.cls();
melangeaddict 2:9c0a83c5ded5 385 freq_down=freq;
melangeaddict 2:9c0a83c5ded5 386 done=true;
melangeaddict 2:9c0a83c5ded5 387 }
melangeaddict 4:e370f322a697 388 if (start_tuning==false)
melangeaddict 4:e370f322a697 389 break;
melangeaddict 2:9c0a83c5ded5 390 }
melangeaddict 2:9c0a83c5ded5 391
melangeaddict 2:9c0a83c5ded5 392 if (freq_up<freq_down) {
melangeaddict 7:057bcd99a3f8 393 down=1;
melangeaddict 7:057bcd99a3f8 394 up=0;
melangeaddict 2:9c0a83c5ded5 395 }
melangeaddict 2:9c0a83c5ded5 396
melangeaddict 2:9c0a83c5ded5 397 lcd.cls();
melangeaddict 2:9c0a83c5ded5 398 lcd.printf("Calibration Done");
melangeaddict 4:e370f322a697 399
melangeaddict 4:e370f322a697 400 if (start_tuning==false) {
melangeaddict 4:e370f322a697 401 output_menu();
melangeaddict 4:e370f322a697 402 setup_buttons();
melangeaddict 4:e370f322a697 403 }
melangeaddict 2:9c0a83c5ded5 404 }
melangeaddict 2:9c0a83c5ded5 405 //**********************************************
melangeaddict 2:9c0a83c5ded5 406 bool check_threshold(float freq) {
melangeaddict 2:9c0a83c5ded5 407 if (freq>500) {
melangeaddict 2:9c0a83c5ded5 408 lcd.cls();
melangeaddict 2:9c0a83c5ded5 409 lcd.printf("Pluck string \nagain");
melangeaddict 2:9c0a83c5ded5 410 return false;
melangeaddict 2:9c0a83c5ded5 411 } else
melangeaddict 2:9c0a83c5ded5 412 return true;
melangeaddict 2:9c0a83c5ded5 413 }
melangeaddict 6:46fb12f6ace1 414
melangeaddict 6:46fb12f6ace1 415
melangeaddict 6:46fb12f6ace1 416
melangeaddict 6:46fb12f6ace1 417 void LED_initialize() {
melangeaddict 6:46fb12f6ace1 418 float wait_time=0.3;
melangeaddict 6:46fb12f6ace1 419 ledBlue=1;//red
melangeaddict 6:46fb12f6ace1 420 ledGreen=1;
melangeaddict 6:46fb12f6ace1 421 ledRed=0;
melangeaddict 6:46fb12f6ace1 422 wait(wait_time);
melangeaddict 6:46fb12f6ace1 423 ledRed=1;//green
melangeaddict 6:46fb12f6ace1 424 ledGreen=0;
melangeaddict 6:46fb12f6ace1 425 wait(wait_time);
melangeaddict 6:46fb12f6ace1 426 ledGreen=1;
melangeaddict 6:46fb12f6ace1 427 ledBlue=0;//blue
melangeaddict 6:46fb12f6ace1 428 wait(wait_time);
melangeaddict 6:46fb12f6ace1 429
melangeaddict 6:46fb12f6ace1 430 for (int a=0; a<5; a++) {
melangeaddict 6:46fb12f6ace1 431 ledRed=0;//all
melangeaddict 6:46fb12f6ace1 432 ledGreen=0;
melangeaddict 6:46fb12f6ace1 433 ledBlue=0;
melangeaddict 6:46fb12f6ace1 434 wait(wait_time);
melangeaddict 6:46fb12f6ace1 435 ledRed=1;
melangeaddict 6:46fb12f6ace1 436 ledGreen=1;
melangeaddict 6:46fb12f6ace1 437 ledBlue=1;
melangeaddict 6:46fb12f6ace1 438 wait(wait_time);
melangeaddict 6:46fb12f6ace1 439
melangeaddict 6:46fb12f6ace1 440 }
melangeaddict 6:46fb12f6ace1 441 ledBlue=0;
melangeaddict 6:46fb12f6ace1 442
melangeaddict 6:46fb12f6ace1 443
melangeaddict 6:46fb12f6ace1 444 ledRed=1;//blue
melangeaddict 6:46fb12f6ace1 445 ledGreen=1;
melangeaddict 6:46fb12f6ace1 446
melangeaddict 6:46fb12f6ace1 447 return;
melangeaddict 6:46fb12f6ace1 448
melangeaddict 6:46fb12f6ace1 449 }
melangeaddict 6:46fb12f6ace1 450
melangeaddict 6:46fb12f6ace1 451
melangeaddict 6:46fb12f6ace1 452 void set_LED(int led, int value) {
melangeaddict 6:46fb12f6ace1 453 //ledBlue=1;
melangeaddict 6:46fb12f6ace1 454 //ledRed=2;
melangeaddict 6:46fb12f6ace1 455 //ledGreen=3;
melangeaddict 6:46fb12f6ace1 456 //value must be an int: 0 or 1
melangeaddict 7:057bcd99a3f8 457 if (value!=0)
melangeaddict 6:46fb12f6ace1 458
melangeaddict 7:057bcd99a3f8 459 switch (led) {
melangeaddict 7:057bcd99a3f8 460 case(1):
melangeaddict 7:057bcd99a3f8 461 ledBlue=value;
melangeaddict 7:057bcd99a3f8 462 break;
melangeaddict 6:46fb12f6ace1 463
melangeaddict 7:057bcd99a3f8 464 case(2):
melangeaddict 7:057bcd99a3f8 465 ledRed=value;
melangeaddict 7:057bcd99a3f8 466 break;
melangeaddict 6:46fb12f6ace1 467
melangeaddict 7:057bcd99a3f8 468 case(3):
melangeaddict 7:057bcd99a3f8 469 ledGreen=value;
melangeaddict 7:057bcd99a3f8 470 break;
melangeaddict 6:46fb12f6ace1 471
melangeaddict 7:057bcd99a3f8 472 default:
melangeaddict 7:057bcd99a3f8 473 break;
melangeaddict 6:46fb12f6ace1 474
melangeaddict 7:057bcd99a3f8 475 }
melangeaddict 6:46fb12f6ace1 476
melangeaddict 6:46fb12f6ace1 477 return;
melangeaddict 6:46fb12f6ace1 478
melangeaddict 6:46fb12f6ace1 479 }