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# driver-74hc595 - Embedded async 74hc595 driver

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An embedded async driver for 74hc595 (compatible) shift registers.

For efficient data transfer, an SPI bus peripheral is used. The SPI bus should be configured in SPI Mode 0 (clock
idle state low, data sampled on rising edge). Because the 74hc595 does not have a CS line, the SPI bus cannot be
shared with other devices (at least not without additional circuitry).

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