https://github.com/kaxori/rtttl-player

The player converts a music string in "Ring Tone Text Transfer Language" code into pitch and duration.
https://github.com/kaxori/rtttl-player

esp32 toit

Last synced: about 2 months ago
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The player converts a music string in "Ring Tone Text Transfer Language" code into pitch and duration.

• Host: GitHub
• URL: https://github.com/kaxori/rtttl-player
• Owner: kaxori
• License: mit
• Created: 2024-04-28T20:48:00.000Z (5 months ago)
• Default Branch: main
• Last Pushed: 2024-04-28T21:39:33.000Z (5 months ago)
• Last Synced: 2024-04-29T22:10:18.099Z (5 months ago)
• Topics: esp32, toit
• Language: Toit
• Homepage:
• Size: 5.86 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# RTTTL-PLAYER

The player converts a music string in "Ring Tone Text Transfer Language" code into pitch and duration.

Inspired by the idea of ​​reusing the piezo detectors contained in discarded smoke detectors, 

the desire to play melodies arose. 

The rtttl-player converts the RTTTL melody string into a Tone list. Regular expressions (=> dartino_regexp pkg) is used to analyse the music string. 

A user defined tone player (lamdba function) is intented to control your own device.

# Installation

```bash

jag pkg install github.com/kaxori/rtttl-player

```

# Usage

```toit

import rtttl-player show *

import gpio show Pin

import gpio.pwm show Pwm

GPIO_BUZZER ::= 16

BUZZER ::= Pin GPIO_BUZZER

play-host pitch duration:

  print "pitch: $(%5d pitch), duration: $duration ms"

play-buzzer freq length:

  if freq > 0: // play tone

    melody_pwm := Pwm --frequency=freq

    melody_channel := melody_pwm.start BUZZER

    melody_channel.set_duty_factor 0.5

    sleep --ms=length

    melody_pwm.close

  else: // pause

    sleep --ms=length

main:

  SMOKE ::= "smoke:o=5,d=4,b=130:c,d#,f.,c,d#,8f#,f,p,c,d#,f.,d#,c,2p,8p,c,d#,f.,c,d#,8f#,f,p,c,d#,f.,d#,c"

  rtttl := rtttl-player (:: | pitch duration | play-buzzer pitch duration )

  rtttl.play SMOKE

```

# References

Wiki RTTTL: https://de.wikipedia.org/wiki/Ring_Tones_Text_Transfer_Language

RTTTL Format Specifications: http://merwin.bespin.org/t4a/specs/nokia_rtttl.txt

To play RTTTL online: https://adamonsoon.github.io/rtttl-play/

Collection of melodies: https://1j01.github.io/rtttl.js/

Toit regexp package: https://pkg.toit.io/package/github.com%2Ferikcorry%[email protected]

Online RegExp tester: https://regex101.com/