/* We record offsets in a bitmap for the particular chain it should be in. */
static void record_offset(unsigned char bits[], tdb_off_t off)
{
uint32_t h1 = off, h2 = 0;
unsigned int i;
/* We get two good hash values out of jhash2, so we use both. Then
* we keep going to produce further hash values. */
for (i = 0; i < NUM_HASHES / 2; i++) {
hash(off, &h1, &h2);
bit_flip(bits, h1 % BITMAP_BITS);
bit_flip(bits, h2 % BITMAP_BITS);
h2++;
}
}
void LCD_update( void )
{
int i,j;
#ifdef LCD_NO_SKIP_UPDATE
if(1)
#else
if(LCD.update_rows) //if any rows to update
#endif
{
for(i=0; i<HW_ROWS; i++)
{
#ifdef LCD_FORCE_TOTAL_UPDATE
if(1)
#else
if(LCD.update_rows & (1<<i))
#endif
{
#ifdef LCD_UPDATE_DEBUG
bit_flip(lcd_update_toggler,1<<i);
#endif
LCD_writeCommand (0x80); //column
LCD_writeCommand (0x40|(HW_ROWS-1-i)); //row
for(j=HW_COLUMNS; j>0; j--)
{
#ifdef LCD_UPDATE_DEBUG
if(lcd_update_toggler&(1<<i))
LCD_writeData(~lcd_buffer[i][j-1]);
else
#endif
LCD_writeData(lcd_buffer[i][j-1]);
}
}
}
LCD.update_rows=0;
LCD_gotoXY (0,0); //bring the XY position back to (0,0)
}
}
void sig_handler(int sig)
{
gettimeofday(&recvtime, NULL);
show_stackframe();
bit_flip();
}
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);
}
}
}