ECE 111 At Oregon State University
/
Lab3_GUI
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Dependencies: mbed
main.cpp
- Committer:
- ziadeldebri
- Date:
- 2016-08-12
- Revision:
- 0:36358c0a184c
File content as of revision 0:36358c0a184c:
#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;
}
}
}