21 lines
454 B
C
21 lines
454 B
C
/*
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* Copyright (c) 2019, Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_SAMPLES_DRIVERS_LED_WS2812_H_
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#define ZEPHYR_SAMPLES_DRIVERS_LED_WS2812_H_
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/*
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* At 4 MHz, 1 bit is 250 ns, so 3 bits is 750 ns.
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*
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* That's cutting it a bit close to the edge of the timing parameters,
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* but it seems to work on AdaFruit LED rings.
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*/
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#define SPI_FREQ 4000000
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#define ZERO_FRAME 0x40
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#define ONE_FRAME 0x70
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#endif
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