Conner Awald / Mbed 2 deprecated StepperMotorSong4180

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Dependencies:   mbed mbed-rtos SDFileSystem11

main.cpp@7:dd65856c3982, 2021-05-02 (annotated)

Committer:
cawald18
Date:
Sun May 02 20:07:22 2021 +0000
Revision:
7:dd65856c3982
Parent:
6:2450dc369670 
Base Version 1.0;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cawald18 7:dd65856c3982 1 /*
cawald18 7:dd65856c3982 2 ECE 4180 Project - Stepper motor songs
cawald18 7:dd65856c3982 3 Conner Awald and Evan Zhang
cawald18 7:dd65856c3982 4
cawald18 7:dd65856c3982 5 TO-DO: The program does not exit gracefully when reaching the end of the file.
cawald18 7:dd65856c3982 6 We should add a character that indicates the end of the file to the program.
cawald18 7:dd65856c3982 7
cawald18 7:dd65856c3982 8 Also need to add bluetooth control so the user can select a file to play from preinstalled songs
cawald18 7:dd65856c3982 9 maybe also add stop start controls?
cawald18 7:dd65856c3982 10
cawald18 7:dd65856c3982 11 */
cawald18 7:dd65856c3982 12
cawald18 0:6cc2c1f459f1 13 #include "mbed.h"
cawald18 0:6cc2c1f459f1 14 #include "rtos.h"
cawald18 1:ddbed1542633 15 #include "SDFileSystem.h"
cawald18 1:ddbed1542633 16 #include <string>
cawald18 1:ddbed1542633 17 #include <sstream>
cawald18 1:ddbed1542633 18 #include <iostream>
cawald18 1:ddbed1542633 19 #include <cstdlib>
cawald18 1:ddbed1542633 20
cawald18 0:6cc2c1f459f1 21 Thread motor;
cawald18 1:ddbed1542633 22 SDFileSystem sd(p5, p6, p7, p8, "sd");
cawald18 0:6cc2c1f459f1 23 Serial pc(USBTX, USBRX); // tx, rx
cawald18 7:dd65856c3982 24
cawald18 7:dd65856c3982 25 class Note { //I use this to create a note object which contains
cawald18 7:dd65856c3982 26 // The pitch, starting time, and duration(stop) of the note
cawald18 1:ddbed1542633 27 public:
cawald18 1:ddbed1542633 28 int midiNote;
cawald18 1:ddbed1542633 29 float start;
cawald18 1:ddbed1542633 30 float stop;
cawald18 1:ddbed1542633 31 Note(int midi, float sta, float sto) {
cawald18 1:ddbed1542633 32 start = sta;
cawald18 1:ddbed1542633 33 stop = sto;
cawald18 1:ddbed1542633 34 midiNote = midi;
cawald18 1:ddbed1542633 35 }
cawald18 1:ddbed1542633 36 };
cawald18 1:ddbed1542633 37
cawald18 0:6cc2c1f459f1 38
cawald18 0:6cc2c1f459f1 39
cawald18 7:dd65856c3982 40 DigitalOut led1(LED2); //Used simply for debugging, could add functionailty
cawald18 7:dd65856c3982 41 // So the led lights up when the corresponding motor is playing
cawald18 7:dd65856c3982 42 DigitalOut f1(p21); //Flipper functions used to generate tones
cawald18 5:bc7213111da0 43 DigitalOut f2(p22);
cawald18 5:bc7213111da0 44 DigitalOut f3(p23);
cawald18 7:dd65856c3982 45
cawald18 7:dd65856c3982 46 DigitalOut m1e(p17); //THIS ENABLES THE MOTOR DRIVER PINS. It is important to turn
cawald18 7:dd65856c3982 47 // it off when the motor is not playing a note because
cawald18 7:dd65856c3982 48 //the motor will waste power otherwise in the idle state
cawald18 6:2450dc369670 49 DigitalOut m2e(p18);
cawald18 6:2450dc369670 50 DigitalOut m3e(p19);
cawald18 7:dd65856c3982 51
cawald18 7:dd65856c3982 52 Ticker t1; //These are the ticker functions that call the flip functions
cawald18 5:bc7213111da0 53 Ticker t2;
cawald18 5:bc7213111da0 54 Ticker t3;
cawald18 7:dd65856c3982 55
cawald18 7:dd65856c3982 56 float motor1stop; //These are the times each motor is going to stop at in seconds
cawald18 5:bc7213111da0 57 float motor2stop;
cawald18 5:bc7213111da0 58 float motor3stop;
cawald18 4:f14ca9203f62 59
cawald18 7:dd65856c3982 60 Timer motor1timer; //Used to keep track of the time
cawald18 7:dd65856c3982 61 void flip1() //These flip the output pins, generating a pulse
cawald18 5:bc7213111da0 62 {
cawald18 5:bc7213111da0 63 f1 = !f1;
cawald18 5:bc7213111da0 64 }
cawald18 5:bc7213111da0 65 void flip2()
cawald18 5:bc7213111da0 66 {
cawald18 5:bc7213111da0 67 f2 = !f2;
cawald18 5:bc7213111da0 68 }
cawald18 5:bc7213111da0 69 void flip3(){
cawald18 5:bc7213111da0 70 f3 = !f3;
cawald18 5:bc7213111da0 71 }
cawald18 5:bc7213111da0 72 /*
cawald18 5:bc7213111da0 73 Takes the midi number in from the array and then converts it to a frequency in hz;
cawald18 5:bc7213111da0 74 */
cawald18 5:bc7213111da0 75 float midi2freq(float midi){
cawald18 5:bc7213111da0 76 return 440.0*powf(2.0, (midi-69)/12);
cawald18 5:bc7213111da0 77 }
cawald18 5:bc7213111da0 78
cawald18 0:6cc2c1f459f1 79 int main() {
cawald18 7:dd65856c3982 80 f1 = 0; //Initialize everything
cawald18 6:2450dc369670 81 f2 = 0;
cawald18 6:2450dc369670 82 f3 = 0;
cawald18 6:2450dc369670 83 m1e = 0;
cawald18 6:2450dc369670 84 m2e = 0;
cawald18 6:2450dc369670 85 m3e = 0;
cawald18 6:2450dc369670 86 motor1stop = 0;
cawald18 6:2450dc369670 87 motor2stop = 0;
cawald18 6:2450dc369670 88 motor3stop = 0;
cawald18 6:2450dc369670 89
cawald18 7:dd65856c3982 90 bool holdNotes = 0; //Stop reading notes file once we have the next note
cawald18 7:dd65856c3982 91 bool holdStart = 0; //Stop reading start times once we have parsed the starrt
cawald18 2:39d41fd0f52b 92 bool holdFinish = 0; //Stop reading in finish times
cawald18 7:dd65856c3982 93 pc.baud(115200); //Baud rate used for debugging if needed
cawald18 7:dd65856c3982 94 const char * d; //This is old when I was messing around with this stuff
cawald18 7:dd65856c3982 95 //But im actually not sure if I used the names later, should probably check
cawald18 1:ddbed1542633 96 std::string str = "123.4567";
cawald18 1:ddbed1542633 97 d = str.c_str();
cawald18 1:ddbed1542633 98 // convert string to float
cawald18 1:ddbed1542633 99 float num_float = std::atof(d);
cawald18 1:ddbed1542633 100
cawald18 1:ddbed1542633 101 // convert string to double
cawald18 6:2450dc369670 102 //pc.printf("%f\n", num_float-1.0);
cawald18 7:dd65856c3982 103 pc.printf("Im Alive");
cawald18 1:ddbed1542633 104 int temp = 0;
cawald18 1:ddbed1542633 105
cawald18 1:ddbed1542633 106 pc.printf("Hello World!");
cawald18 1:ddbed1542633 107 string output = "";
cawald18 1:ddbed1542633 108
cawald18 7:dd65856c3982 109 FILE *fpn = fopen("/sd/notesmatrix.txt", "r"); //Fpn is a pointer to the notes file that contains the note values
cawald18 7:dd65856c3982 110 FILE *fpstart = fopen("/sd/notesstart.txt", "r"); //Fpstart is a pointer to the file on the sd card that contains the start times
cawald18 7:dd65856c3982 111 FILE *fpfinish = fopen("/sd/notesfinish.txt","r"); //Fpfinish is a pointer to the file on the sd card that says how long each note should last
cawald18 1:ddbed1542633 112 unsigned char c;
cawald18 6:2450dc369670 113 //pc.printf("I'm here\n");
cawald18 7:dd65856c3982 114 Note myNote = Note(0, 0, 0); //Create a blank note
cawald18 7:dd65856c3982 115 motor1timer.start(); //Start the timer
cawald18 7:dd65856c3982 116 while (!feof(fpn)){ // while not end of file, keep goig
cawald18 7:dd65856c3982 117 while(!holdNotes) { //Make sure we haven't completed the note section yet
cawald18 1:ddbed1542633 118 c = fgetc(fpn); // get a character/byte from the file
cawald18 7:dd65856c3982 119 if(c == ','){ //If the character is a comma, we have parsed the full note
cawald18 1:ddbed1542633 120 stringstream degree(output);
cawald18 7:dd65856c3982 121 degree >> temp; //These are weird names I got from the example code I copied
cawald18 7:dd65856c3982 122 // but basically this converts a string into a float
cawald18 6:2450dc369670 123 //pc.printf("%d\n", temp);
cawald18 6:2450dc369670 124 myNote.midiNote = temp;
cawald18 1:ddbed1542633 125 output = "";
cawald18 2:39d41fd0f52b 126 holdNotes = 1;
cawald18 1:ddbed1542633 127 } else {
cawald18 7:dd65856c3982 128 output += c; //If this isn't the end of the file, lets add the character we read onto the end
cawald18 1:ddbed1542633 129 }
cawald18 2:39d41fd0f52b 130 }
cawald18 6:2450dc369670 131
cawald18 7:dd65856c3982 132 output = ""; //Reset the output
cawald18 7:dd65856c3982 133 while(!holdStart) { //Do the same thing as above but for the start times
cawald18 2:39d41fd0f52b 134 c = fgetc(fpstart);
cawald18 2:39d41fd0f52b 135 if(c == ','){
cawald18 2:39d41fd0f52b 136 d = output.c_str();
cawald18 2:39d41fd0f52b 137 num_float = std::atof(d);
cawald18 6:2450dc369670 138 //pc.printf("%f\n", num_float);
cawald18 2:39d41fd0f52b 139 output = "";
cawald18 2:39d41fd0f52b 140 myNote.start = num_float;
cawald18 2:39d41fd0f52b 141 holdStart = 1;
cawald18 2:39d41fd0f52b 142 } else {
cawald18 2:39d41fd0f52b 143 output+= c;
cawald18 2:39d41fd0f52b 144 }
cawald18 1:ddbed1542633 145
cawald18 2:39d41fd0f52b 146 }
cawald18 1:ddbed1542633 147 output = "";
cawald18 7:dd65856c3982 148 while(!holdFinish){ //Do the same thing as above with durations
cawald18 1:ddbed1542633 149 c = fgetc(fpfinish);
cawald18 1:ddbed1542633 150 if(c == ','){
cawald18 1:ddbed1542633 151 d = output.c_str();
cawald18 1:ddbed1542633 152 num_float = std::atof(d);
cawald18 6:2450dc369670 153 //pc.printf("%f\n", num_float);
cawald18 1:ddbed1542633 154 output = "";
cawald18 2:39d41fd0f52b 155 myNote.stop = num_float;
cawald18 2:39d41fd0f52b 156 holdFinish = 1;
cawald18 1:ddbed1542633 157 } else {
cawald18 1:ddbed1542633 158 output+= c;
cawald18 1:ddbed1542633 159 }
cawald18 1:ddbed1542633 160
cawald18 7:dd65856c3982 161 } //ONCE WE REACH THIS POINT ALL PARTS OF THE NOTE OBJECT SHOULD BE SET and USABLE
cawald18 7:dd65856c3982 162
cawald18 7:dd65856c3982 163 /*
cawald18 7:dd65856c3982 164 The next three functions check to see if the motors stop time has past
cawald18 7:dd65856c3982 165 or will pass in the next ms. If so, it stops the motor from playing and
cawald18 7:dd65856c3982 166 disables the pin.
cawald18 7:dd65856c3982 167 */
cawald18 7:dd65856c3982 168 if((motor1stop-.001)< motor1timer.read()) {
cawald18 6:2450dc369670 169 t1.detach();
cawald18 6:2450dc369670 170 m1e = 0;
cawald18 6:2450dc369670 171 }
cawald18 7:dd65856c3982 172 if((motor2stop-.001)< motor1timer.read()){
cawald18 6:2450dc369670 173 t2.detach();
cawald18 6:2450dc369670 174 m2e = 0;
cawald18 6:2450dc369670 175 }
cawald18 7:dd65856c3982 176 if((motor3stop-.001)< motor1timer.read()) {
cawald18 6:2450dc369670 177 t3.detach();
cawald18 6:2450dc369670 178 m3e = 0;
cawald18 0:6cc2c1f459f1 179 }
cawald18 2:39d41fd0f52b 180
cawald18 7:dd65856c3982 181
cawald18 7:dd65856c3982 182 /*
cawald18 7:dd65856c3982 183 This now looks at the note object we currently have parsed in and sees
cawald18 7:dd65856c3982 184 if it is time to try and assign it to a motor to be played. If it is not time,
cawald18 7:dd65856c3982 185 we are simply going to keep looping until it is time.
cawald18 7:dd65856c3982 186 */
cawald18 6:2450dc369670 187 if(myNote.start <= motor1timer.read()){
cawald18 7:dd65856c3982 188 if(motor1stop-.002 < motor1timer.read()) { //Check to see if the motor has stopped playing or is going to stop playing
cawald18 6:2450dc369670 189 t1.attach(&flip1, .5/midi2freq(myNote.midiNote)); //
cawald18 7:dd65856c3982 190 motor1stop = myNote.stop+motor1timer.read(); //Set the new stop time to be the current time plus the duration of the note
cawald18 7:dd65856c3982 191 m1e = 1; //Enable the note
cawald18 7:dd65856c3982 192 holdNotes = 0; //Reset the notes control to enable reading the next note
cawald18 6:2450dc369670 193 holdStart = 0;
cawald18 6:2450dc369670 194 holdFinish = 0;
cawald18 7:dd65856c3982 195 } else if(motor2stop-.002 < motor1timer.read()) {
cawald18 6:2450dc369670 196 t2.attach(&flip2, .5/midi2freq(myNote.midiNote));
cawald18 6:2450dc369670 197 motor2stop = myNote.stop+motor1timer.read();
cawald18 6:2450dc369670 198 m2e = 1;
cawald18 6:2450dc369670 199 holdNotes = 0;
cawald18 6:2450dc369670 200 holdStart = 0;
cawald18 6:2450dc369670 201 holdFinish = 0;
cawald18 7:dd65856c3982 202 } else if(motor3stop-.002 < motor1timer.read()) {
cawald18 6:2450dc369670 203 t3.attach(&flip3, .5/midi2freq(myNote.midiNote));
cawald18 6:2450dc369670 204 motor3stop = myNote.stop+motor1timer.read();
cawald18 6:2450dc369670 205 m3e = 1;
cawald18 6:2450dc369670 206 holdNotes = 0;
cawald18 6:2450dc369670 207 holdStart = 0;
cawald18 6:2450dc369670 208 holdFinish = 0;
cawald18 7:dd65856c3982 209 } else { //If all three motors are playing something and it is time to play the new note,
cawald18 7:dd65856c3982 210 // We simply do nothing with it and skip it
cawald18 6:2450dc369670 211 holdNotes = 0;
cawald18 6:2450dc369670 212 holdStart = 0;
cawald18 6:2450dc369670 213 holdFinish = 0;
cawald18 6:2450dc369670 214 }
cawald18 6:2450dc369670 215 } //We have now finished assigning the note to be played
cawald18 6:2450dc369670 216 led1 = !led1;
cawald18 6:2450dc369670 217
cawald18 6:2450dc369670 218
cawald18 6:2450dc369670 219 } //End of while loop for playing
cawald18 6:2450dc369670 220 motor1stop = 0;
cawald18 6:2450dc369670 221 motor2stop = 0;
cawald18 6:2450dc369670 222 motor3stop = 0;
cawald18 2:39d41fd0f52b 223
cawald18 2:39d41fd0f52b 224
cawald18 0:6cc2c1f459f1 225 }