39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
//Copyright 2015 <>< Charles Lohr, See LICENSE file.
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//WS2812 sender that abuses the I2S interface on the WS2812.
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#ifndef _WS2812I2S_TEST
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#define _WS2812I2S_TEST
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//Stuff that should be for the header:
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#include <c_types.h>
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//Parameters for the I2S DMA behaviour
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//#define I2SDMABUFCNT (2) //Number of buffers in the I2S circular buffer
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//#define I2SDMABUFLEN (32*2) //Length of one buffer, in 32-bit words.
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//NOTE: Blocksize MUST be divisible by 4. Cannot exceed 4092
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//Each LED takes up 12 block bytes in WS2812_FOUR_SAMPLE
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//Or 9 block bytes in WS2812_THREE_SAMPLE
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#define WS_BLOCKSIZE0 4000
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#define WS_BLOCKSIZE1 4000
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#define WS_BLOCKSIZE2 4000
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//You can either have 3 or 4 samples per bit for WS2812s.
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//3 sample can't go quite as fast as 4.
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//3 sample uses more processing when updating than 4.
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//4 takes up more RAM per LED than 3.
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//3 has slightly more restrictve timing requirements.
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//4 has more DMA load when running.
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//#define WS2812_THREE_SAMPLE
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//#define WS2812_FOUR_SAMPLE
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void ICACHE_FLASH_ATTR ws2812_init();
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void ws2812_push( uint8_t * buffer, uint16_t buffersize, int led_mode ); //Buffersize = Nr LEDs * 3
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//led_mode = 0 for WS2812B
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//led_mode = 1 for luxehedron
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#endif
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