pomodoro-avr

commit 698fb60c28720a888c261458f154fb5e3aafeb01
parent d801e67aed47f7f4f3b89d619eaf286a15e12eb8
Author: Anton Konyahin <me@konyahin.xyz>
Date:   Tue, 12 Apr 2022 21:23:24 +0300

add music

Diffstat:
M
Makefile
 | 
2
+-
M
interrupt.c
 | 
3
++-
M
interrupt.h
 | 
4
++--
M
main.c
 | 
65
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------
A
music.c
 | 
33
+++++++++++++++++++++++++++++++++
A
music.h
 | 
27
+++++++++++++++++++++++++++

6 files changed, 122 insertions(+), 12 deletions(-)
diff --git a/Makefile b/Makefile
@@ -5,7 +5,7 @@ CC=avr-gcc
 OBJCOPY=avr-objcopy
 CFLAGS=-std=c99 -Wall -g -Os -mmcu=$(MCU) -DF_CPU=$(F_CPU) -I.
 TARGET=pomodoro
-SRCS=main.c interrupt.c
+SRCS=main.c interrupt.c music.c
 
 build: $(SRCS)
 	$(CC) $(CFLAGS) -o $(TARGET).bin $(SRCS)
diff --git a/interrupt.c b/interrupt.c
@@ -24,7 +24,8 @@ init_interrupt(void (*on_press) (void))
 ISR (PCINT0_vect)
 {
     int8_t pressed = !(PINB & (1 << BUTTON));
-    if (pressed) {
+    if (pressed)
+    {
         _delay_ms(30);
         pressed = !(PINB & (1 << BUTTON));
         if (pressed)
diff --git a/interrupt.h b/interrupt.h
@@ -1,5 +1,5 @@
-#define BUTTON PB3
-#define INTERRUPT PCINT3
+#define BUTTON PB1
+#define INTERRUPT PCINT1
 
 void
 init_interrupt(void (*on_press) (void));
diff --git a/main.c b/main.c
@@ -1,15 +1,58 @@
 #include <avr/io.h>
-#include <avr/interrupt.h>
 #include <util/delay.h>
 #include <stdbool.h>
 
 #include "interrupt.h"
+#include "music.h"
 
 #define LED_GREEN PB4
-#define LED_RED PB1
-#define SOUND PB0
+#define LED_RED PB3
 
-enum status_e {
+melody_t start_melody = {
+    .length = 5,
+    .tones = {
+        TONE_A,
+        TONE_D,
+        TONE_G,
+        TONE_E,
+        TONE_B
+    }
+};
+
+melody_t start_work_melody = {
+    .length = 4,
+    .tones = {
+        TONE_A,
+        TONE_E,
+        TONE_F,
+        TONE_D
+    }
+};
+
+melody_t start_rest_melody = {
+    .length = 4,
+    .tones = {
+        TONE_A,
+        TONE_D,
+        TONE_E,
+        TONE_A
+    }
+};
+
+melody_t end_melody = {
+    .length = 6,
+    .tones = {
+        TONE_A,
+        TONE_B,
+        TONE_A,
+        TONE_C,
+        TONE_A,
+        TONE_D
+    }
+};
+
+enum status_e
+{
     ON,
     WORK,
     REST
@@ -24,14 +67,17 @@ void set_status()
         case ON:
             PORTB &= ~(1 << LED_RED);
             PORTB &= ~(1 << LED_GREEN);
+            play_melody(&end_melody);
             break;
         case WORK:
             PORTB |= (1 << LED_RED);
             PORTB &= ~(1 << LED_GREEN);
+            play_melody(&start_work_melody);
             break;
         case REST:
             PORTB &= ~(1 << LED_RED);
             PORTB |= (1 << LED_GREEN);
+            play_melody(&start_rest_melody);
             break;
     }
 }
@@ -47,13 +93,16 @@ int main(void)
 {
     DDRB |= (1 << LED_GREEN);
     DDRB |= (1 << LED_RED);
-    DDRB |= (1 << SOUND);
 
     init_interrupt(switch_status);
+    init_music();
+
+    PORTB |= (1 << LED_GREEN);
+    PORTB |= (1 << LED_RED);
+    play_melody(&start_melody);
+    PORTB &= ~(1 << LED_GREEN);
+    PORTB &= ~(1 << LED_RED);
 
-    cli();
-    sei();
-    
     while (true) {
     }
 
diff --git a/music.c b/music.c
@@ -0,0 +1,33 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include <stdarg.h>
+
+#include "music.h"
+
+void
+play_melody(const melody_t *melody)
+{
+    // set clk/8 prescaling
+    TCCR0B |= (1 << CS01);
+
+    for (int8_t i = 0; i < melody->length; i++)
+    {
+        OCR0A = melody->tones[i];
+        _delay_ms(DELAY);
+    }
+
+    // disable timer
+	TCCR0B &= ~(1 << CS01);
+}
+
+void
+init_music(void)
+{
+    DDRB |= (1 << SOUND);
+    PORTB &= ~(1 << SOUND);
+
+    // set timer setting
+    TCCR0A |= (1 << WGM01);
+    TCCR0A |= (1 << COM0A0);
+}
diff --git a/music.h b/music.h
@@ -0,0 +1,27 @@
+#define	SOUND PB0
+
+#define TONE_A 42
+#define TONE_AS 39
+#define TONE_B 37
+#define TONE_C 71
+#define TONE_CS 67
+#define TONE_D 63
+#define TONE_DS 59
+#define TONE_E 56
+#define TONE_F 53
+#define TONE_FS 50
+#define TONE_G 47
+#define TONE_GS 44
+
+#define DELAY 250
+
+typedef struct melody_s {
+    uint8_t length;
+    uint8_t tones[];
+} melody_t;
+
+void
+init_music(void);
+
+void
+play_melody(const melody_t *melody);