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connect all 15 buttons to notes arduino

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Vineet K 2024-04-19 16:48:55 -04:00 committed by Shokara Kou
parent e16ce44563
commit 7eb9db0d82
1 changed files with 10 additions and 10 deletions
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20
notes.c
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@ -1,7 +1,7 @@
/* /*
* EEL4746C - AVR Piano - Speaker Section * EEL4746C - AVR Piano - Speaker Section
* speaker is connected to PD2 and ground * speaker is connected to PD2 and ground
* buttons are connceted to PB0-5, PC0-5, PD3-7 * 15 buttons are connected to PD3-7, PC0-4, PB0-4
* the LCD Arduino UNO is connected to TX/RX (PD0/1) * the LCD Arduino UNO is connected to TX/RX (PD0/1)
*/ */
@ -37,6 +37,7 @@ unsigned short freqs[] = {
FREQ(6000), FREQ(6000),
FREQ(7000), FREQ(7000),
FREQ(8000), FREQ(8000),
[255] = 0 // used as a 'silent' note
}; };
unsigned char note = 0; unsigned char note = 0;
@ -45,7 +46,7 @@ ISR (PCINT0_vect)
// check if any button in the whole port is pressed // check if any button in the whole port is pressed
for (unsigned char i = 0; i <= 5; i++) { for (unsigned char i = 0; i <= 5; i++) {
if (PINB & (1 << i)) { if (PINB & (1 << i)) {
note = i + 5 + 6; note = i + 5;
break; break;
} }
} }
@ -56,7 +57,7 @@ ISR (PCINT1_vect)
// check if any button in the whole port is pressed // check if any button in the whole port is pressed
for (unsigned char i = 0; i <= 5; i++) { for (unsigned char i = 0; i <= 5; i++) {
if (PINC & (1 << i)) { if (PINC & (1 << i)) {
note = i + 5; note = i + 5 + 6;
break; break;
} }
} }
@ -67,7 +68,7 @@ ISR (PCINT2_vect)
// check if any button in the whole port is pressed // check if any button in the whole port is pressed
for (unsigned char i = 3; i <= 7; i++) { for (unsigned char i = 3; i <= 7; i++) {
if (PIND & (1 << i)) { if (PIND & (1 << i)) {
note = i; note = i - 3;
break; break;
} }
} }
@ -82,11 +83,10 @@ main(void)
DDRD = (1 << P_TX) | (1 << P_SPKR); DDRD = (1 << P_TX) | (1 << P_SPKR);
// Enabling Pin Change Interrupt for All Buttons // Enabling Pin Change Interrupt for All Buttons
PCMSK0 = 0b00111111; PCMSK0 = 0b00011111;
PCMSK1 = 0b00111111; PCMSK1 = 0b00011111;
PCMSK2 = 0b11111000; PCMSK2 = 0b11111000;
// PCICR = (1 << PCIE0) | (1 << PCIE1) | (1 << PCIE2); PCICR = (1 << PCIE0) | (1 << PCIE1) | (1 << PCIE2);
PCICR = 1 << PCIE2;
TCCR1A = 0x00; // use timer1 CTC mode TCCR1A = 0x00; // use timer1 CTC mode
TCCR1B = 1 << WGM12; // already prescaled by 8 in table TCCR1B = 1 << WGM12; // already prescaled by 8 in table
@ -95,8 +95,8 @@ main(void)
// Sends Square wave to the Speaker When a Button is Pressed // Sends Square wave to the Speaker When a Button is Pressed
for (unsigned char n = 0;; n = (n + 1) % 2) { for (unsigned char n = 0;; n = (n + 1) % 2) {
//if (((PIND & 0b11111000) | (PINC & 0b00111111) | (PINB & 0b00111111)) == 0) // check if any buttons are pressed, otherwise don't play a note
if ((PIND & 0b11111000) == 0) if (((PINB & PCMSK0) | (PINC & PCMSK1) | (PIND & PCMSK2)) == 0)
continue; continue;
// Prepare Timer/Counter // Prepare Timer/Counter