buildUCS7604Preamble()

template<typename OutputIterator>

void fl::buildUCS7604Preamble	(	OutputIterator	out,
		UCS7604Mode	mode,
		u8	r_current,
		u8	g_current,
		u8	b_current,
		u8	w_current )

Build UCS7604 preamble (15 bytes)

Template Parameters

OutputIterator

Output iterator accepting uint8_t

Parameters

out	Output iterator for preamble bytes
mode	UCS7604 protocol mode (8-bit/16-bit)
r_current	Red channel current control (0x0-0xF, wire order)
g_current	Green channel current control (0x0-0xF, wire order)
b_current	Blue channel current control (0x0-0xF, wire order)
w_current	White channel current control (0x0-0xF, wire order)

Note

Current control values should already be reordered to match wire protocol (RGB)

KNOWN LIMITATION: The UCS7604 protocol spec requires a ~20us "W-code low" delay between the 8-byte verification code and the 7-byte configuration block. Our clockless controller sends all 15 bytes as a continuous bit-encoded stream without this gap. If this causes issues on some hardware, the transmission would need to be split into two separate clockless sends with a manual low-hold between them. See: https://github.com/clinder/Arduino-Teensy-UCS7604

Definition at line 71 of file ucs7604.h.

                                                                   {
    // Sync pattern (6 bytes)
    *out++ = 0xFF;
    *out++ = 0xFF;
    *out++ = 0xFF;
    *out++ = 0xFF;
    *out++ = 0xFF;
    *out++ = 0xFF;
 
    // Header (2 bytes)
    *out++ = 0x00;
    *out++ = 0x03;
 
    // Mode byte
    *out++ = static_cast<u8>(mode);
 
    // Current control (4 bytes, 4-bit each, wire order RGBW)
    *out++ = r_current & 0x0F;
    *out++ = g_current & 0x0F;
    *out++ = b_current & 0x0F;
    *out++ = w_current & 0x0F;
 
    // Reserved (2 bytes)
    *out++ = 0x00;
    *out++ = 0x00;
}

References FL_NO_EXCEPT.

Referenced by encodeUCS7604().

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