Hi! > This patch adds support for driving a chain of WS2812B LED chips > using SPI bus. > > WorldSemi WS2812B is a individually addressable LED chip that > can be chained together and controlled individually using a > single wire. The chip recognize a long pulse as a bit of 1 and > a short pulse as a bit of 0. Host sends a continuous stream > of 24-bits color values, each LED chip takes the first 3 byte > it receives as its color value and passes the leftover bytes to > the next LED on the chain. > > This driver simulates this protocol using SPI bus by sending > a long pulse as 3'b110 and a short pulse as 3'b100. The SPI > frequency needs to be 2.105MHz~2.85MHz for the timing to be > correct and the controller needs to transfer all the bytes > continuously. Is this the same thing as NeoPixel? If so, that may be better-known name. Best regards, Pavel -- People of Russia, stop Putin before his war on Ukraine escalates.
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