beatsin8()

LIB8STATIC uint8_t beatsin8	(	accum88	beats_per_minute,
		uint8_t	lowest = 0,
		uint8_t	highest = 255,
		uint32_t	timebase = 0,
		uint8_t	phase_offset = 0 )

Generates an 8-bit sine wave at a given BPM that oscillates within a given range.

Parameters

beats_per_minute	the frequency of the wave, in decimal
lowest	the lowest output value of the sine wave
highest	the highest output value of the sine wave
timebase	the time offset of the wave from the millis() timer
phase_offset	phase offset of the wave from the current position

Examples

DemoReel100.ino, and Pacifica.ino.

Definition at line 975 of file lib8tion.h.

{
    uint8_t beat = beat8( beats_per_minute, timebase);
    uint8_t beatsin = sin8( beat + phase_offset);
    uint8_t rangewidth = highest - lowest;
    uint8_t scaledbeat = scale8( beatsin, rangewidth);
    uint8_t result = lowest + scaledbeat;
    return result;
}

References beat8(), LIB8STATIC, scale8(), and sin8.

Referenced by bpm(), fl::DemoReel100::bpm(), fl::Pacifica::draw(), loop(), fl::Pacifica::pacifica_add_whitecaps(), pacifica_add_whitecaps(), and pacifica_loop().

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