Diff: main.cpp

Revision:

0:36358c0a184c

diff -r 000000000000 -r 36358c0a184c main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Aug 12 21:39:58 2016 +0000
@@ -0,0 +1,206 @@
+#include "mbed_beat_factory.h"
+/************************************* Lab3 Mbed beat factory ***************************/
+/*                                                                                      */
+/*  File: main.cpp                                                                      */
+/*  Author: Ziad Eldebri                                                                */
+/*  Date Created: 8/6/2016                                                              */
+/*  Description: Receives song data from a python GUI and subsequently plays it. It     */
+/*               additionally provides the GUI with live song bar updates               */
+/*                                                                                      */
+/****************************************************************************************/
+/**********************
+*    Setup Portion    *
+**********************/
+
+Serial pc(USBTX, USBRX);
+PwmOut Speaker(PTE31);
+commStruct comm;
+songStruct song;
+BusOut test(LED_RED,LED_GREEN);
+
+int freq[25] = {220,233,246,261,277,293,311,329,349,369,392,415,440,466,493,523,554,587,622,659,698,740,784,831,0} ;
+//int  freq[25] =  {220,233,261,277,293,220,233,261,277,293,220,233,261,277,293,220,233,261,277,293,220,233,261,277,293};
+
+/************************************* serial_wait_packet     ***************************/
+/*                                                                                      */
+/*  File: main.cpp                                                                      */
+/*  Author: Ziad Eldebri                                                                */
+/*  Date Created: 8/6/2016                                                              */
+/*  Description: Receives song data from a python GUI and subsequently plays it. It     */
+/*               additionally provides the GUI with live song bar updates               */
+/*                                                                                      */
+/****************************************************************************************/
+
+char serial_wait_packet()
+{
+    while( !pc.readable()) {};
+    return pc.getc();
+}
+
+
+/************************************* get_serial_data        ***************************/
+/*                                                                                      */
+/*  File: main.cpp                                                                      */
+/*  Author: Ziad Eldebri                                                                */
+/*  Date Created: 8/6/2016                                                              */
+/*  Description: Receives song data from a python GUI and subsequently plays it. It     */
+/*               additionally provides the GUI with live song bar updates               */
+/*                                                                                      */
+/****************************************************************************************/
+
+
+int get_serial_data()
+{
+
+    int byt_count= 0;
+    int data_count = 0;
+
+    /* Clear the the data array in the comm struct */
+    for( int i = 0; i < 3; i++ ) {
+        for( int j = 0; j <3; j++ ) {
+            comm.data[ i ][ j ] = 0;
+        }
+    }
+
+
+
+
+    if(serial_wait_packet() == '$') {
+        comm.packetType = pc.getc();
+
+        for(;;) {
+
+            char data = pc.getc();
+
+            if(data == '$' ) {
+                return 0;
+            } else if(data == '\n') {
+                comm.data[data_count][byt_count]= '\n';
+                return byt_count ;
+            } else {
+                comm.data[data_count][byt_count]= data;
+                byt_count++;
+            }
+
+        }
+    }
+
+    return 0;
+}
+
+/************************************* extract_from_packet    ***************************/
+/*                                                                                      */
+/*  File: main.cpp                                                                      */
+/*  Author: Ziad Eldebri                                                                */
+/*  Date Created: 8/6/2016                                                              */
+/*  Description: Receives song data from a python GUI and subsequently plays it. It     */
+/*               additionally provides the GUI with live song bar updates               */
+/*                                                                                      */
+/****************************************************************************************/
+
+void extract_from_packet()
+{
+    /* Switch to specified packet */
+    switch( comm.packetType ) {
+
+            /* New Song Packet */
+        case 'N':
+            initializeSong();
+            break;
+
+            /* Tempo Packet */
+        case 'T':
+            song.tempo = atoi( comm.data[0] );
+            break;
+
+            /* Song length packet */
+        case 'L':
+            song.notes = atoi( comm.data[0] );
+            break;
+
+            /* Song data packet */
+        case 'S':
+            song.note[ song.currentNote ] = atoi(comm.data[ 0 ]);
+            song.currentNote++;
+            break;
+
+            /* Play song packet */
+        case 'P':
+            playSong();
+            break;
+
+    }
+
+}
+
+void initializeSong( void )
+{
+    for( int i = 0; i < 128; i++ ) {
+        song.note[i] = 0;
+    }
+    song.tempo = 120;
+    song.notes = 0;
+    song.currentNote = 0;
+}
+
+
+void playSong( void )
+{
+
+
+    for( int i = 0; i < song.notes; i++ ) {
+        /* Send the current bar we're on to the gui */
+        pc.printf("%d\n",i);
+
+        /* Set the frequency of the PWM for the specified note */
+        if(song.note[i] == 24) {
+            Speaker.period(0);
+            Speaker = 0;
+        } else {
+            Speaker.period( ((float)1/freq[song.note[i]]) );
+
+            Speaker = 0.5;
+
+            /* Wait a specific amount of time based on the tempo */
+            wait_ms(((float)((float)60/(float)song.tempo)*(float)1000.0));
+            test = ~ test;
+        }
+    }
+
+    Speaker.period(0);
+    Speaker = 0;
+    /* Turn off speaker */
+
+    /* Print an end of packet byte 0xFF */
+    pc.printf("255\n");
+
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+int main()
+{
+    test =3;
+    while (true) {
+
+        if( get_serial_data()> 0) {
+
+            extract_from_packet();
+            test = 0;
+        }
+
+
+    }
+
+}