int main(void)
{
bit_set(DDRB, BIT(3));
bit_set(DDRB, BIT(2));
bit_clear(PORTB, BIT(3));
bit_set(PORTB, BIT(2));
pwm_init();
adc_init();
int recording = 0;
int saved;
int playing = 0;
int reading;
int noteSlot = 0;
while(1)
{
if(playing)
{
// GET NOTE
reading = eeprom_read_byte ((uint8_t*)noteSlot);
reading = reading * 4;
//reading = 900;
}
else
{
// READ ADC
reading = adc_read();
}
if (reading < 128)
{
bit_clear(PORTB, BIT(3));
//bit_clear(PORTB, BIT(2));
dontplay();
if(recording){
bit_clear(PORTB, BIT(2));
_delay_ms(10);
if(adc_read()==reading)
{
saved = 0;
}
}
}
else
{
if(recording && !saved)
{
// RECORD NOTE
int readingLess = reading / 4;
eeprom_write_byte ((uint8_t *)noteSlot, (uint8_t)readingLess);
noteSlot++;
if(noteSlot>60)
{
recording = 0;
noteSlot = 0;
bit_flip(PORTB, BIT(2));
}
else
{
saved = 1;
}
}
bit_set(PORTB, BIT(3));
if(recording) bit_set(PORTB, BIT(2));
if ((reading <= 310)) // RECORD
{
// DEBOUNCE
_delay_ms(50);
if(adc_read()==reading)
{
// Debounce ok, toggle recording mode
recording = !recording;
if(!recording)
{
noteSlot++;
eeprom_write_byte ((uint8_t *)noteSlot, (uint8_t)0);
}
noteSlot = 0;
//bit_flip(PORTB, BIT(2));
while(adc_read()>128){}
}
}
else if ((reading <= 340)) // PLAY
{
if(!recording){
_delay_ms(2);
int secondRead = adc_read();
if(secondRead==reading || secondRead==reading+1 || secondRead==reading-1 || secondRead==reading+2 || secondRead==reading-2)
{
// Debounce ok, start playing
playing = 1;
noteSlot = 0;
bit_clear(PORTB, BIT(2));
}
while(adc_read()>128){}
}
}
else if ((reading <= 359))
{
playnote(A1);
}
else if (reading <= 380)
{
playnote(AS1);
}
else if (reading <= 387)
{
playnote(B1);
}
else if (reading <= 402)
{
playnote(C1);
}
else if (reading <= 418)
{
playnote(CS1);
}
else if (reading <= 436)
{
playnote(D1);
}
else if (reading <= 455)
{
playnote(DS1);
}
else if (reading <= 477)
{
playnote(E1);
}
else if (reading <= 500)
{
playnote(F1);
}
else if (reading <= 525)
{
playnote(FS1);
}
else if (reading <= 554)
{
playnote(G1);
}
else if (reading <= 586)
{
playnote(GS1);
}
else if (reading <= 621)
{
playnote(A2);
}
else if (reading <= 661)
{
playnote(AS2);
}
else if (reading <= 707)
{
playnote(B2);
}
else if (reading <= 760)
{
playnote(C2);
}
else if (reading <= 821)
{
playnote(CS2);
}
else if (reading <= 892)
{
playnote(D2);
}
else if (reading <= 977)
{
playnote(DS2);
}
else if (reading > 977)
{
playnote(E2);
}
}
if(playing)
{
// wait for time
_delay_ms(200);
dontplay();
_delay_ms(200);
noteSlot++;
if(noteSlot>60 || reading==0)
{
noteSlot = 0;
playing = 0;
bit_set(PORTB, BIT(2));
}
}
else
{
// loop quickly
_delay_us(255);
}
}
}
void loop(void)
{
//if we are in playback mode
if (playing)
{
// fetch the next note from the eeprom
reading = eeprom_read_byte((uint8_t*) noteSlot);
reading = reading * 4;
}
else
{
// fetch the next note from the probe
reading = adc_read();
}
// if nothing is being pressed
if (reading < 128)
{
// turn the touch LED On
bit_clear(PORTB, LED_TOUCH);
// Stop playing any notes we might be playing
dontplay();
// if we are recording
if (recording)
{
// turn the REC LED on
bit_clear(PORTB, LED_REC);
_delay_ms(10);
if (adc_read() == reading)
{
saved = 0;
}
}
}
else
{
// if we are recording and the note hasn't changed
if (recording && !saved)
{
// crop off the top two bits to make the note fit in an 8 bit memory address
int readingLess = reading / 4;
// store the note in the eeprom
eeprom_write_byte((uint8_t *) noteSlot, (uint8_t) readingLess);
// move to the next eeprom location
noteSlot++;
// if the eeprom is full
if (noteSlot > 60)
{
// stop recording & reset to the beginning of the recording
recording = FALSE;
noteSlot = 0;
// turn the recording LED Off
bit_set(PORTB, LED_REC);
}
else
{
// mark the current note as saved
saved = 1;
}
}
// turn the TOUCH LED off
bit_set(PORTB, LED_TOUCH);
// if we are recording, turn the RED LED off (why here?)
if (recording) bit_set(PORTB, LED_REC);
// average out the reading over a few samples to make sure it is correct
_delay_ms(50);
reading = reading + adc_read() + adc_read() + adc_read() / 4;
if ((reading <= 310)) // Record button was pressed
{
// Toggle Recording Mode
recording = !recording;
// If we are finished recording
if (!recording)
{
// add a '0' to the end of the recording, to make sure the playback is turned off
noteSlot++;
eeprom_write_byte((uint8_t *) noteSlot, (uint8_t) 0);
}
// reset our 'pointer' to the beginning of the eeprom
noteSlot = 0;
// wait for the button to be released
while (adc_read() > 128);
}
else if ((reading <= 340)) // Play button was pressed
{
// we cant play while recording
if (!recording)
{
// start playing back from the beginning of the eeprom
playing = TRUE;
noteSlot = 0;
// turn on the REC LED
bit_clear(PORTB, LED_REC);
// wait for the button to be released
while (adc_read() > 128);
}
}
else if ((reading <= 359))
{
playnote(A1);
}
else if (reading <= 380)
{
playnote(AS1);
}
else if (reading <= 387)
{
playnote(B1);
}
else if (reading <= 402)
{
playnote(C1);
}
else if (reading <= 418)
{
playnote(CS1);
}
else if (reading <= 436)
{
playnote(D1);
}
else if (reading <= 455)
{
playnote(DS1);
}
else if (reading <= 477)
{
playnote(E1);
}
else if (reading <= 500)
{
playnote(F1);
}
else if (reading <= 525)
{
playnote(FS1);
}
else if (reading <= 554)
{
playnote(G1);
}
else if (reading <= 586)
{
playnote(GS1);
}
else if (reading <= 621)
{
playnote(A2);
}
else if (reading <= 661)
{
playnote(AS2);
}
else if (reading <= 707)
{
playnote(B2);
}
else if (reading <= 760)
{
playnote(C2);
}
else if (reading <= 821)
{
playnote(CS2);
}
else if (reading <= 892)
{
playnote(D2);
}
else if (reading <= 977)
{
playnote(DS2);
}
else if (reading > 977)
{
playnote(E2);
}
}
if (playing)
{
// wait for time
_delay_ms(200);
dontplay();
_delay_ms(200);
noteSlot++;
if (noteSlot > 60 || reading == 0)
{
noteSlot = 0;
playing = FALSE;
bit_set(PORTB, LED_REC);
}
}
else
{
// loop quickly
_delay_us(255);
}
}
