= PlayNotes =
Play simple music notes on the beeper.

{{{
void PlayNotes(const string& strNotes);

void PlayNotes(const char* pszNotes);
}}}

== Parameters == 

 * strNotes - string containing notes to play
 * pszNotes - character array pointer containing notes to play

== Return Value ==

 * void - does not return any value

== Remarks ==

Any application that will use PlayNotes must call OpenBeeeper first.

The duration of note may be specified such as 8A as an eighth note, 4C and a quarter note. The octave may be specified after the note such as 8A5 to specify an eighth A note octave 5.

The available notes are limited to:

Octave 5 - A, B, C, D, E, F, G

Octave 6 - A, C, E, G

Octave 7 - C, D, E

The beeper device /dev/cardbeep accepts formatted strings containing various notes to play. The following notes are supported:
||'''Note'''||'''Octave'''||'''Frequency (Hz)'''||
||C||5||523.25||
||D||5||587.33||
||E||5||659.26||
||F||5||698.46||
||G||5||783.99||
||A||5||880||
||B||5||987.77||
||C||6||1046.5||
||E||6||1318.5||
||G||6||1568||
||A||6||1760||
||C||7||2093||
||D||7||2349.3||
||E||7||2637||

A string can be formatted to send to the device in the format:
{{{

<duration><note><octave>
 * duration
  * 1 – 8, note = 1/duration
   * 1 = whole (1/1) note
   * 4 = quarter (1/4) note
   * 8 = eighth (1/8) note
 * note - letter from above table
 * octave - number from above table
}}}

Commas are used to separate note information, for example:
{{{
4A5,8E6
}}}
Plays a 1/4 note A in octave five then a 1/8 note E in octave 6.

The default octave may be set by:
{{{
O<octave>
}}}

Example:
{{{
O5,A,B,C
}}}
Sets the default octave to 5 then plays note A, B, and C.

The tempo may be set by:
{{{
T<tempo>
}}}
''tempo must be three characters numeric'''

Example:
{{{
T100,A,B
}}}
Sets the tempo to 100 then plays note A and B.

== Examples ==

{{{
string str = "A,B,C\r";
PlayNotes(str);
}}}

{{{
PlayNotes("A,B,C\r");
}}}

== See Also ==

 * [http://tech.825spectrum.com/trac/wiki/Docs/Prog/Manual/ApplicationLibraries/lib825ev/KeypadSound/OpenBeeper OpenBeeper]