Add polyphonic ringtones for received messages.

platform/avr-ravenlcd/beep.c

@@ -32,22 +32,24 @@
  *
  * \brief
  *      This file implements a beep function to emit a beep sound from Raven's
- *      speaker.
+ *      speaker. Also polyphonic ringtones.
  *
  * \author
  *      Mike Vidales mavida404@gmail.com
+ *      David Kopf dak664@embarqmail.com
  *
  */
 
 
 #include "beep.h"
 #include "key.h"
+#include <stdlib.h>
+#include "util/delay.h"
 
 /**
  *  \addtogroup lcd
  *  \{
 */
-
 /*---------------------------------------------------------------------------*/
 
 /**
@@ -90,4 +92,107 @@ beep(void)
     ENTER_PUR &= ~(1 << PE7);
 }
 
+/*---------------------------------------------------------------------------*/
+/**
+ *  \brief Play polyphonic tune using buzzer.  An 8 bit timer generates interrupts
+ *  that flip the BEEP pin at the selected frequencies.
+ *  On exit the beeper port pin is set low to shut down the speaker amplifier.
+*/
+/* Base interrupts per second, and interrupts for each note */
+//#define BASE 31250
+#define BASE 31250/2  //up one octave
+#define NONE 0
+#define C4   BASE/262
+#define CS4  BASE/277
+#define D4   BASE/294
+#define DS4  BASE/311
+#define E4   BASE/330
+#define F4   BASE/349
+#define FS4  BASE/370
+#define G4   BASE/392
+#define GS4  BASE/415
+#define A4   BASE/440
+#define AS4  BASE/466
+#define B4   BASE/494
+#define C5   BASE/523
+#define CS5  BASE/554
+#define D5   BASE/587
+#define DS5  BASE/622
+#define E5   BASE/659
+#define F5   BASE/698
+#define FS5  BASE/740
+#define G5   BASE/784
+#define GS5  BASE/831
+#define A5   BASE/880
+#define AS5  BASE/932
+
+/* Tone reference length and internote gap, milliseconds */
+#define TONE_LENGTH 60
+#define TONE_GAP    20
+
+
+static uint8_t tuneindex=0;
+static uint8_t pictures[] PROGMEM = {G4,4, F4,4, AS4,4, C5,2, F5,2, D5,4, C5,2, F5,2, D5,4, AS4,4, C5,4, G4,4, F4,4, 0xff};
+static uint8_t     axel[] PROGMEM = {FS4,2, NONE,2, A4,3, FS4,2, FS4,1, B4,2, FS4,2, E4,2, FS4,2, NONE,2, CS5,3, FS4,2, FS4,1, D5,2, CS5,2, A4,2, FS4,2, CS5,2, FS5,2, FS4,1, E4,2, E4,1, CS4,2, GS4,2, FS4,6, 0xff};
+static uint8_t sandman1[] PROGMEM = {F4,2, G4,2, B4,4, A4,10, B4,2, B4,2, A4,2, B4,12, 0xff};
+static uint8_t sandman2[] PROGMEM = {C4,2, E4,2, G4,2, B4,2, A4,2, G4,2, E4,2, C4,2, D4,2, F4,2, A4,2, C5,2, B4,8, 0xff};
+static uint8_t furelise[] PROGMEM = {E5,1, DS5,1, E5,1, DS5,1, E5,1, B4,1, D5,1, E5,1, A4,2, NONE,1, C4,1, E4,1, A4,1, B4,2, NONE,1, E4,1, GS4,1, B4,1, C5,2, 0xff};
+
+static volatile uint8_t icnt,tone;
+
+#include <avr/interrupt.h>
+ISR(TIMER0_OVF_vect)
+{
+    if (tone == NONE) icnt = 0;
+    else if (icnt++ >= tone)
+    {
+        BEEP_PIN |= (1 << BEEP_BIT);
+        icnt = 0;
+    }
+}
+
+void play_ringtone(void)
+{
+uint8_t i,*noteptr;
+
+    /* What's next on the playlist? */
+    switch (tuneindex++) {
+    case 1 :beep();return;
+    case 2 :noteptr=sandman1;break;
+    case 3 :noteptr=furelise;break;
+    case 4 :noteptr=sandman2;break;
+    case 5 :noteptr=axel;break;
+    default:noteptr=pictures;tuneindex=1;break;
+    }
+    
+    /* Turn on the power to the speaker. */
+    ENTER_DDR |= (1 << PE7);
+    ENTER_PUR |= (1 << PE7);
+
+    /* Setup port pin */
+    BEEP_DDR |= (1 << BEEP_BIT);
+
+    /* Start with no tone */
+    icnt = 0;
+    tone = NONE;
+    
+    /* Clock 8 bit timer at maximum frequency (CS0=1), interrupt overflow */
+    /* 8MHz / 256 = 31250 interrupts per second */
+    TCCR0A |= _BV(CS00);
+    TCNT0 = 0;
+    TIMSK0 |= _BV(TOIE0);
+
+    /* Play all the notes */
+    for (;;) {
+        tone=pgm_read_byte(noteptr++);
+        if (tone==0xff) break;
+        for (i = pgm_read_byte(noteptr++);i > 0; i--) _delay_us(1000UL*TONE_LENGTH);
+        tone = NONE;_delay_us(1000UL*TONE_GAP);
+    }
+    
+    /* Turn off interrupts and speaker */
+    TIMSK0 &= ~_BV(TOIE0);
+    BEEP_PORT &= ~(1 << BEEP_BIT);
+    ENTER_PUR &= ~(1 << PE7);
+}
 /** \}   */

platform/avr-ravenlcd/beep.h

@@ -53,5 +53,6 @@
 /** \} */
 
 void beep(void);
+void play_ringtone(void);
 
 #endif /* BEEP_H */

platform/avr-ravenlcd/raven3290.c

@@ -268,13 +268,12 @@ read_menu(uint8_t ndx)
 }
 
 /*---------------------------------------------------------------------------*/
-
+char top_menu_text[20];
 /**
  *   \brief This will toggle the CONTIKI and 6LOWPAN LCD menus in the main
  *   menu position, unless alternate text has been sent from the 1284p.
  *   The other menus will display normally.
 */
-char top_menu_text[20];
 void
 check_main_menu(void)
 {
@@ -307,8 +306,8 @@ uint8_t showtop=0;
 void
 check_menu(void)
 {
-    if(menu.text == menu_text4){
-        menu_clear_temp();
+    if(menu.text == menu_text12){
+       menu_clear_temp();
     }
 
     if(menu.text == menu_text10){

platform/avr-ravenlcd/uart.c

@@ -435,10 +435,12 @@ uart_serial_rcv_frame(uint8_t wait_for_ack)
             lcd_symbol_clr(LCD_SYMBOL_BELL);
             break;
         case REPORT_TEXT_MSG:
-            /* Copy text message to menu buffer and fall through to beep */
+            /* Copy text message to menu buffer and play ringtone */
             /* Prezero in case no string terminator in command */
             for (i=0;i<sizeof(top_menu_text);i++) top_menu_text[i]=0;
             memcpy(&top_menu_text,(char *)payload,sizeof(top_menu_text)-1);  //leave zero byte at end
+            play_ringtone();
+            break;
         case REPORT_PING_BEEP:
             lcd_symbol_set(LCD_SYMBOL_BELL);
             beep();